Current Issue
Vol 51. 2024
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Research Article 2024-12-19
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105
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Genetic Diversity of Amaranth in Burkina Faso
Jacques OUEDRAOGO･Zakaria KIEBRE･Kiswendsida Romaric NANEMA･Mariam KIEBRE･Pauline BATIONO/KANDO
J Plant Biotechnol (2024) 51:387-394AbstractAbstract : The study of genetic diversity of cultivated plants is important for conservation of genetic resources as well as for selection of genetically diverse parent lines from several genetic populations. The aim of the present study was to expand the knowledge of the genetic diversity of amaranth grown in Burkina Faso. Eleven microsatellite markers (SSR) were used to genotype 72 amaranth accessions. The markers tested proved to be 100% polymorphic and generated a total of 35 alleles, with an average of 3.27 alleles per marker. The frequency of observed heterozygosity averaged 0.26 per locus and was slightly lower than the expected heterozygosity (He = 0.27). Axes 1 and 2 of the PCoA explained 39.27% of the population distribution variance. Analysis of variance showed that there was only 2% variation between morphotypes. The degrees of genetic differentiation Fst calculated between the morphotypes were low (0.05 ≤ Fst ≤ 0.11), showing numerous genetic exchanges. The dark green morphotype was an exception, with a low gene flow (0.286 ≤ Fst ≤ 0.452) with the other morphotypes. Pairwise analysis showed only a small genetic distance (0.04) between the Sahelian and Sudano-Sahelian climatic zones. Genetic structuring using showed no morphological or genetic distinctions, indicating little genetic divergence between the groups. These preliminary results show that the population studied has satisfactory genetic diversity, which can be used as a basis to guide conservation and sustainable breeding programs for amaranth in Burkina Faso.
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Research Article 2024-12-03
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216
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Comparative transcriptome analysis of Ligularia stenocephala (Maxim.) treated with different concentrations of deep seawater
Bimpe Suliyat Azeez ･Se-Jin Oh ･Jong-Kuk Na
J Plant Biotechnol (2024) 51:377-386AbstractAbstract : Seawater is an economical and eco-friendly alternative to chemical fertilizers because it contains various plant essential minerals required for plant growth. Seawater application has various effects on crops at the physiological and transcriptional levels. In this study, transcriptional changes in Ligularia stenocephala, a vegetable crop known as “Gondalbi”, in response to deep seawater (DSW) treatment were examined using RNA sequencing. L. stenocephala was treated with 5% and 10% DSW (designated to DSW5 and DSW10) or 500X and 1000X of a fertilizer (designated to SWF500 and SWF1000) comprising filtered DSW and additional minerals. RNA sequencing generated 152 million clean sequence reads in total, of which de novo assembly generated 147,406 unigenes with an average length of 566.6 bp. The GC content of five transcriptomes was 42.95-43.65%, and the N50 was 776 bp. Annotation of all identified unigenes was performed using seven different databases, and 67,592 unigenes (45.8%) were annotated. KEGG analysis annotated total of 7009 unigenes (22.9%) into 421 pathways. Because L. stenocephala is known for its anti-oxidative properties, we focused on genes associated with natural antioxidant biosynthesis and identified several unigenes involved in the biosynthesis of glutathione, tocopherol, beta-carotenoids, flavonoids, and ascorbic acid. Furthermore, we carried out the mining of simple sequence repeat (SSR) and identified 35,280 from the L. stenocpehala transcriptome. Present data would be valuable for an enhanced understanding of the transcriptional properties of seawater application in other crops and for the investigation of the functional properties and therapeutic potential of L. stenocephala.
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Research Article 2024-11-29
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176
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Characterization of taxon-specific endogenous reference genes in LM soybeans and maize using chamber digital PCR and real-time PCR
Eun-Ha Kim · Byeori Kim · Yelinn Yoo · Youn-Sung Cho · Young Soon Kim · Jae In Lee · Tae-Sung Park
J Plant Biotechnol (2024) 51:364-376AbstractAbstract : The quantitative analysis of the Living Modified (LM) crops is expressed as the percentage ratio of the introduced gene copy number to that of the endogenous reference gene (ERG), highlighting the necessity of developing and validating reliable reference genes. This study evaluated the characteristics of key ERG assays used for approved LM soybean and maize events in Korea through traditional PCR, chamber digital PCR (cdPCR), and real- time quantitative PCR (RT-qPCR). For soybeans, assays targeting different regions of the lectin gene, Le1-A and Le1-B, were performed. For maize, assays targeting the high mobility group a (HMG), alcohol dehydrogenase 1 (ADH1), and fructose bisphosphate Aldolase (ALD) genes were conducted. Traditional PCR analysis was used to assess taxon specificity, while cdPCR was used to determine the target copy number and zygosity ratio. RT-qPCR was employed to analyze the slope, R2, and efficiency of the standard quantification curve. Each assay showed species specificity. The Le1-A and Le1-B assays were suitable for all tested LM soybean events and domestic varieties. For maize, the HMG and ADH1 assays were suitable for 11 and 10 of the 12 LM maize events, respectively, in addition to domestic varieties. However, the ALD assay for maize formed two distinct “positive” groups in cdPCR due to single nucleotide polymorphisms in homologous genes, suggesting its unsuitability as an ERG for maize. The ERG assays proposed in this study for LM soybean and LM maize, respectively, enable the establishment of efficient qualitative and quantitative analysis methods, potentially enhancing compliance with regulatory requirements.
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Research Article 2024-11-18
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170
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Impact of a delayed senescence OsSGR allele on yield improvement in Milyang 374
Sais-Beul Lee · Sumin Jo · Youngeun Lee · Jun-Hyeon Cho · Jong-Hee Lee · Dongjin Shin
J Plant Biotechnol (2024) 51:354-363AbstractAbstract : Rice production faces significant challenges owing to increasing global demands and the adverse effects of climate change. To achieve stable and improved actual yields, breeding rice varieties with delayed senescence has emerged as a promising strategy. Therefore, this study aims to evaluate the performance of “Milyang 374”, a near-isogenic line (NIL) derived from the Tongil-type rice “Milyang 21”, which carries the OsSGR gene responsible for delayed chlorophyll degradation. Field trials were conducted from 2021 to 2023 in Miryang, from 2022 to 2023 in Sangju, and from 2023 in Cheorwon. In Miryang, yield was assessed under early, normal, and late transplanting schedules to evaluate the effect of different planting seasons. In Sangju and Cheorwon, yield performance was tested to assess adaptability across regions. The results showed that “Milyang 374” exhibited stable yield performance across different transplanting schedules and regions, achieving an average yield increase of 7.4% compared to that of “Milyang 21”. “Milyang 374” demonstrated a higher 1,000-grain weight, averaging 21.6 g, than the 19.8 g in “Milyang 21”, attributed to the presence of the OsSGR gene. This gene facilitated prolonged photosynthetic activity during the grain-filling stage, resulting in more effective carbohydrate accumulation. While the number of panicles and seeds per panicle was reduced, the delayed senescence trait contributed to higher grain filling rates and overall yield improvements. These findings highlight the value of incorporating stay-green traits in breeding programs to enhance yield stability and quality across different planting schedules and environmental conditions.
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Research Article 2024-11-15
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235
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Comparative analysis of data processing methods for optimizing timeseries analysis of rice plant height
Do-Sin Lee · Dong-Young Kim · Kwang-Hyun Jo · Jeong-Ho Baek · Sung-Hwan Jo
J Plant Biotechnol (2024) 51:344-353AbstractAbstract : In this study, we developed and validated an optimized phenotypic analysis method using time-series data collected throughout the full growth cycle of 96 rice cultivars. Height growth curves were compared across three phenotyping tools (ImageJ, OpenCV, and PlantCV), each of which showed distinct performance characteristics at different stages of rice growth. ImageJ displayed significant variability in early growth stages, while OpenCV suffered from decreased accuracy during later stages. PlantCV, however, provided stable and consistent results across all stages, making it the most reliable tool for this phenotypic analysis. We also examined the effects of replicate sampling, camera angle selection, and outlier removal on data variability and error rates. Results indicated that replicate sampling alone was insufficient to control variability; however, combining optimized processing techniques, particularly angle selection and outlier exclusion, substantially improved data reliability and precision. Outlier removal, along with selecting maximum angle values, contributed to smoother growth curves with less variability, enhancing the robustness of the data. The reliability of these phenotypic traits was further validated through genome- wide association studies (GWAS), using 12,127 SNPs identified via a deep learning-based GBS(Genotyping-by-Sequencing) pipeline. The GWAS analysis identified significant SNPs associated with rice height on chromosomes 3, 6, and 9. Notably, genes such as OsBIG, OsGH9B3, OsSTRL2, and OsCCS52A were confirmed to play roles in rice height, linking them to growth hormone biosynthesis pathways. This optimized phenotypic analysis method demonstrates strong potential for identifying trait-associated markers in rice and other crop plants.
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Research Article 2024-11-13
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142
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Yeast cadmium factor 1-enhanced oxidative stress tolerance in Arabidopsis thaliana
Min-A Seol · Seon Suk Kim · Eun Seon Lee · Kyong-Hee Nam · Seong-Jun Chun · Jun-Woo Lee
J Plant Biotechnol (2024) 51:337-343AbstractAbstract : Yeast cadmium factor 1 (YCF1) is an ATP-binding cassette transporter family protein that is heterologously expressed in Arabidopsis thaliana. YCF1 enhances tolerance to abiotic stresses, particularly Cd and oxidative stress, by acting as a reactive oxygen species (ROS) scavenger and also regulating key transcription factors, including WRKY13 and WRKY25. In the present study, Arabidopsis transformants expressing YCF1 were generated via Agrobacterium-mediated transformation, resulting in two distinct phenotypes: YCF1_Wt, which exhibits a wild-type-like appearance, and YCF1_Dw, displaying dwarf stature and expressing higher levels of YCF1 than YCF1_Wt. Comparative analysis revealed that YCF1_Dw possessed significantly enhanced ROS scavenging activity, as indicated by elevated expression of antioxidant enzymes, such as superoxide dismutase (SOD1), catalase (CAT), and ascorbate peroxidase1 (APX1). Consequently, greater stress tolerance was observed in the YCF1_Dw transformant relative to YCF1_Wt. The study also revealed differential expression of WRKY13 and WRKY25 under stress conditions, with WRKY13 and WRKY25 upregulated in response to Cd and oxidative stress, respectively, suggesting a stress-specific regulatory mechanism facilitated by YCF1. Moreover, the YCF1_Dw phenotype offers practical advantages for phytoremediation applications, as its smaller size lends itself to easier management in controlled environments. These findings highlight the potential of YCF1 to enhance plant stress tolerance, which could in turn significantly impact agricultural and environmental biotechnology.
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Research Article 2024-11-13
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116
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Expression analysis of genes related to abscisic acid biosynthesis and signaling in response to flooding stress in sweetpotato
Sul-U Park · Ho Soo Kim · Yun-Hee Kim
J Plant Biotechnol (2024) 51:328-336AbstractAbstract : Flooding is detrimental to most agricultural crops. Sweetpotato, a root crop, has relatively strong resistance to drought and high temperature but is sensitive to flooding, which significantly reduces its commercial value and yield. Transcriptome analyses of flooding-tolerant and flooding-sensitive sweetpotato cultivars indicate that genes associated with the metabolism of various plant hormones, including abscisic acid (ABA), are involved in flooding stress tolerance. Although sweetpotato cultivars are classified as either sensitive or tolerant to flooding, the role of ABA metabolism and signaling in flooding resistance has not yet been elucidated. Therefore, in this study, we characterized the expression patterns of genes related to ABA metabolism and signaling in the leaves of two sweetpotato cultivars under flooding stress. NCED genes, associated with ABA biosynthesis, showed higher expression levels in the flooding-tolerant cultivar than in the flooding-sensitive cultivar. In contrast, CYP707A genes, involved in ABA catabolism, were significantly upregulated in the flooding-sensitive cultivar compared with the flooding-tolerant cultivar. Moreover, ABA signaling genes, encoding the PYR receptor and ABI5 transcription factor, were downregulated in the flooding-tolerant cultivar. These results suggest that genes involved in ABA metabolism and signaling play important roles in response to flooding stress in sweetpotato.
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Research Article 2024-11-12
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153
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Antioxidant and Antienzyme Effects of Extracts from Each Part of Farfugium japonicum
Mi Hyeon Park · Ju-Sung Kim
J Plant Biotechnol (2024) 51:320-327AbstractAbstract : This study aims to investigate the antioxidant and anti-enzymatic effects of Farfugium japonicum. The physiological activities were measured in the flowers, leaves, roots, and stems of the plant, with significant differences confirmed through Duncan’s analysis. The extraction yield in all parts exceeded 20%, surpassing the 10% industrial standard and indicating potential for industrial application. Analysis of antioxidant components revealed the highest content in the roots, followed by the flowers, leaves, and stems. Antioxidant activity tests showed superior activity in the roots, suggesting that phenolic and flavonoid compounds contributed to this effect. α-Glucosidase inhibition tests, used to assess antidiabetic effects, compared the plant parts with acarbose, a standard diabetes treatment. The roots exhibited higher activity and showed significant differences compared to those of the other plant parts. Tyrosinase inhibition tests were conducted to compare the effects of the plant with arbutin, a key ingredient in whitening cosmetics. Although all plant parts exhibited lower efficiency than those of the positive control, the roots were comparable. These findings indicate that roots demonstrate the highest physiological activity among the plant parts, similar to that of the positive control. These findings suggest the potential applications of F. japonicum roots as an antioxidant, antidiabetic, and skin-whitening.
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Review 2024-11-04
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227
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Effect of media components on hyperhydricity in horticultural crops: A review
Nurhuriyah Hadfina Zunazri · Nurashikin Kemat · Norazrin Ariffin · Innaka Ageng Rineksane
J Plant Biotechnol (2024) 51:307-319AbstractAbstract : Tissue culture of horticultural plants under sterile conditions results in numerous genetically uniform and virus-free plants; hence, the technique is widely used. However, in vitro culture increases the risk of hyperhydricity, thereby negatively impacting growth quality and causing substantial plant material loss. Hyperhydricity is a physiological, anatomical, and metabolic disturbance caused by various stresses and affects several plant tissues in a highly intricate manner. Hyperhydricity symptoms vary and its occurrence depends on the species or cultivar. This review considers the main physiological, anatomical, biochemical, and molecular symptoms in several horticultural plants. The primary determinants of plant hyperhydricity levels in vitro are media components, such as gelling agents and plant growth regulators. Considering these factors, incorporating external additives in media is a viable strategy to tackle hyperhydricity. Nevertheless, not all techniques are universally effective in alleviating hyperhydricity symptoms. Therefore, a thorough examination of hyperhydricity is necessary, and efforts to mitigate hyperhydricity should be complete, intricate, and species-specific.
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Research Article 2024-10-28
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206
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Haplotype analysis of Tongil-type rice varieties through sequence polymorphism analysis of cold tolerance-enhancing genes
Youngeun Lee · Sais-Beul Lee · Ju-Won Kang · Jun-Hyeon Cho · Dong-Soo Park · Jong-Hee Lee · Dongjin Shin · Byung Jun Jin
J Plant Biotechnol (2024) 51:294-306AbstractAbstract : Rice is an important cereal crop worldwide. Domestic rice varieties in Korea are primarily of two types, namely Japonica varieties (table rice) and high-yield Tongil-type varieties. The domestically developed Tongil-type varieties have a 20-40% higher yield than the Japonica varieties. However, the Tongil-type varieties are more sensitive to cold temperatures than the Japonica varieties, which affects their cultivation adaptability. To improve the cold tolerance of Tongil-type varieties, genetic analysis was performed to identify 11 functionally validated cold tolerance- enhancing genes, which were then subjected to haplotype analysis in both Japonica and Tongil-type rice varieties based on the data from the 3000 Rice Genome Project. An average of 10 haplotypes were identified for the 11 cold-tolerance genes in the Japonica and Tongil-type rice varieties. Notably, bZIP73 exhibited minimal polymorphism with only 4 haplotypes, while CTB2 showed the highest polymorphism with 31 identified haplotypes. To analyze the haplotypes of the cold tolerance-enhancing genes in the Tongil-type varieties, genomic information from 11 varieties, including Hanareum4 and Geumgang1, was extracted, and the single nucleotide polymorphisms (SNPs) at the same positions as the haplotypes were compared. All the Tongil-type varieties, except for Dasan1, contained haplotype 1 (Hap1) of the SAP16 gene, whose sequence was identical to that in the reference Japonica variety, Nipponbare, but distinct from that in the representative cold-tolerant variety, Jinbu. Additionally, the Miryang23, Geumgang, and Hanareum4 varieties possessed the same haplotypes of the HYPRP5 gene as the Nipponbare variety. Similarly, the Geumgang, Geumgang1, and Hanareum4 varieties possessed the same haplotypes as Nipponbare for the TCD5 gene. The results of this study can contribute to the development of SNP-specific molecular markers for improving the cold tolerance of Tongil-type varieties.
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Research Article 2024-10-28
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249
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Optimal concentrations of plant growth regulators and cultivation conditions for plant regeneration from leaf explants of Aster maackii
Jun Young Park · Seok Hui Lee · Dae Sol Kim · Hyeon Jong Kong · Gi Heum Nam · Ji Eun Park · Yang Jin Lee · Jun Won Kang
J Plant Biotechnol (2024) 51:286-293AbstractAbstract : The perennial plant Aster maackii has excellent antioxidant activity and high medicinal potential, making it a valuable plant resource. However, its natural habitat is expected to decrease in area owing to climate change; thus, ex situ conservation will be necessary. Therefore, we aimed to determine the optimal conditions for the propagation of Aster maackii using tissue culture techniques. Leaf explants were cultured on Murashige and Skoog (MS) medium treated with cytokinin hormones alone (6-benzylaminopurine [BAP], zeatin, thidiazuron [TDZ], 6-(γ,γ-dimethylallylamino) purine, and meta-topolin) or in combination with auxin hormones (1-naphthaleneacetic acid and indole-3-butyric acid [IBA]) for 8 weeks, and the induction of shoots from explants was compared. We also attempted to determine the optimal light conditions by culturing explants under different light and dark conditions. In the cytokinin mono-treatment group, highest shoot induction was observed under light conditions with 0.5 mg/L zeatin treatment. However, in the TDZ treatment group, leaf explants were hyperhydrated. In the cytokinin and auxin mixed treatment group, best results were achieved using 2.0 mg/L BAP and 0.5 mg/L IBA treatment under 4 weeks of dark followed by 4 weeks of light conditions. Additionally, shoot induction responses were observed only in the experimental group where BAP was added. Overall, cytokinin monotreatments were more effective for shoot induction than were combined treatments. Most healthy shoots were induced in the zeatin treatment group. Subsequently, shoots were subcultured on 1/2MS medium to induce rooting and shoot growth, and plantlets were obtained.
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Research Article 2024-10-23
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234
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Development of an efficient in vitro shoot regeneration method for carnation cultivars using cotyledons with apical shoot meristems
Jova Riza Campol · Aung Htay Naing · Oluwaseun Suleimon Adedeji · Hyun hee Kang · Su Bin Cho · Mi Young Chung · Chang Kil Kim
J Plant Biotechnol (2024) 51:278-285AbstractAbstract : An efficient regeneration method was developed for two carnation cultivars (Dianthus caryophyllus L.), namely “Chabuad” and “Giant Chabuad,” by culturing different explant types [cotyledon and intact apical shoot meristem—intact shoot apical meristem (SAM), half SAM, destroyed SAM] on varying concentrations of plant growth regulators (PGRs). Cotyledon failed to regenerate shoots in any PGR combination for both cultivars, whereas the other explants exhibited considerable shoot regeneration. Among the tested explants, intact SAM exhibited a higher percentage of shoot regeneration than half SAM and destroyed SAM for both cultivars. Regarding the average number of shoots, the highest numbers were seen in half SAM, followed by intact SAM, and then destroyed SAM for both cultivars across all PGR combinations. However, most shoots regenerated from half SAM and destroyed SAM showed vitrification, whereas 5-10% of the shoots from intact SAM exhibited vitrification. The combination of thidiazuron (TDZ) and indole-3-butyric acid (IBA) exhibited a greater efficacy in inducing vitrified shoots than the BA and NAA combination. Based on the findings, it is recommended to culture intact SAM using BA and NAA combinations, particularly with BA (1.0 mg/l) and NAA (0.3 mg/l), to facilitate normal shoot regeneration in both cultivars, as this combination yielded the highest shoot regeneration efficiencies and an adequate number of normal shoots. The shoot regeneration method developed in this study demonstrates the potential for effective shoot regeneration and genetic transformation of these carnation cultivars.
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Research Article 2024-10-22
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190
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Axillary root development triggered by cold plasma treatment
Bae Young Choi · Youbin Seol · Jaewook Kim
J Plant Biotechnol (2024) 51:273-277AbstractAbstract : The use of atmospheric plasma as a tool is increasingly being explored in agriculture, particularly for its potential to enhance plant growth and germination. Axillary roots, which accumulate valuable medicinal secondary metabolites, are sought after by the pharmaceutical industry. In this study, we investigated the effects of atmospheric plasma treatment on the root tips of three plant species to elucidate its effect on root development. Plasma treatment on the root tip inhibited primary root growth while significantly promoting axillary root development. Plasma treatment on root tips caused DNA damage, which likely suppresses primary root growth. In contrast, plasma-mediated accumulation of reactive oxygen species (ROS) in the root elongation zone may play a role in the development of a secondary meristem to facilitate axillary root formation. Taken together, our findings revealed that plasma treatment induced DNA damage and localized ROS accumulation, both of which likely enhance axillary root development. These results support a novel approach for enhancing root development in medicinal plants, offering potential applications for increasing the yield of valuable secondary metabolites.
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Research Article 2024-10-11
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250
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Preparation of polyclonal antiserum to Tomato mosaic virus and its application as a viral diagnostic test
Boburbek Akhmadaliev · Bobir Abduvaliev · Bakhtiyor Adilov · Shakhnoza Aripova · Zarifa Kadirova · Bobur Abdikarimov · Tokhir Makhmudov · Anvar Sherimbetov · Dilshod Ruzmetov · Bahodir Eshchanov
J Plant Biotechnol (2024) 51:265-272AbstractAbstract : In recent years, the expansion of international seed exports of vegetable crops has led to the spread of both endemic and non-endemic strains of viruses globally. Among these, the Tomato mosaic virus (ToMV) poses a significant threat to the global vegetable industry, particularly the tomato sector, resulting in substantial economic losses. Due to its high pathogenicity and rapid spread, ToMV has been detected in almost all countries, severely impacting the production of tomatoes and other vegetable crops. Creating a rapid and accurate diagnostic test for ToMV is crucial for preventing this infectious disease and developing control measures. A practical approach to mitigate ToMV’s impact involves early virus detection while the plant is asymptomatic. This study presents the results of research focused on the preparation of polyclonal antiserum, which is crucial for the immunodiagnostics of ToMV, ensuring high sensitivity and specificity. This modern approach offers high sensitivity, specificity, and rapid results, making it an effective testing system for farmers, researchers, and regulatory bodies concerned with virus detection. The ToMV antigen, purified through physicochemical methods, was administered along with an isotonic NaCl solution into the ear vein of an “Albinos” rabbit to produce the polyclonal antiserum. During immunization, the antigen quantity was gradually increased. The antiserum’s initial titer was 1:128, which increased to 1:512 after re-immunization. The developed polyclonal antiserum demonstrated high sensitivity in detecting ToMV. It was also successfully used to diagnose various tomato cultivars infected with ToMV.
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Research Article 2024-09-30
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235
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Establishment of an inoculation system for pathogens of the Botrytis genus in Nicotiana tabacum L. cv Havana SR1 and validation of AOS and LOX gene expression levels related to disease resistance
So-Jeong Kim · Young-Doo Park · Jung-Woo Lee
J Plant Biotechnol (2024) 51:253-264AbstractAbstract : The Botrytis genus comprises necrotrophic pathogens that damage various horticultural crops worldwide. Nicotiana tabacum is used as a model plant because it can produce the next generation within three months and generate millions of seeds from one plant. In the case of crops that have features difficult to transform, N. tabacum can be used for transformation to validate unknown genes. The objective of this study was to establish inoculation systems of N. tabacum cv Havana SR1 against two pathogens of the Botrytis genus. As a result, it was appropriate to inoculate 10 μL of conidia suspension (2.25 × 105 cells/μL) using unwounded, in vitro cultured leaves, followed by cultivation at 24°C. In addition, to confirm the resistance response to pathogens at the genetic level, the expression of lipoxygenase (LOX) and allene oxide synthase (AOS), which are jasmonic acid (JA) biosynthetic genes involved in signaling when infected with necrotrophic pathogens, was analyzed. The results showed that NtLOX and NtAOS genes were responsive Botrytis inoculation, with peak expression levels observed at 4 hours post-inoculation. It was also confirmed that LOX and AOS genes are closely related to disease resistance in Botrytis genus. The inoculation system established in this study using N. tabacum is expected to contribute to identifying the function of genes related to resistance to B. cinerea or B. squamosa in crops that are difficult to transform.
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Research Article 2024-09-24
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493
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Standardizing in vitro callus induction and indirect organogenesis of Gloriosa superba L. leaf explants using exogenous phytohormones
Dexter Achu Mosoh · Ashok Kumar Khandel · Sandeep Kumar Verma · Wagner A. Vendrame
J Plant Biotechnol (2024) 51:237-252AbstractAbstract : Gloriosa superba L. is classified as an endangered species owing to slow natural propagation and widespread exploitation in the wild. Therefore, we aim to develop an efficient protocol for the in vitro regeneration of G. superba L. using leaf explants. Optimal callus induction was achieved using a combination of 1-naphthalene acetic acid (NAA) and kinetin (KN) [1.5 mg L-1 NAA + 0.5 mg L-1 K N was supplemented with 10 mg L-1 casein hydrolysate (CH)]. This formulation resulted in the swiftest initiation of callus formation (within 12 d) and yielded the highest callus induction rate (71.88%). Furthermore, addition of 5 mg L-1 CH and 20% (v/v) coconut water to Murashige and Skoog (MS) medium supplemented with 2.0 mg L-1 6-benzylaminopurine and 0.5 mg L-1 NAA facilitated the formation of shoot primordia within 14 d, achieving the highest average number of shoots per callus (5.25). For root development, use of half-strength MS medium supplemented with 1.0 mg L-1 indole-3-butyric acid resulted in the highest root-to-shoot ratio (5.75), root fresh weight (143 mg), and root dry weight (22.2 mg). The in vitro-cultivated plantlets had a 100% survival rate within three weeks of placement in culture rooms and shade net enclosures. After transplantation into a substrate comprising garden soil, sand, and vermiculite and exposure to direct sunlight, the plantlets achieved a 76% survival rate by the fifth week, thereby maintaining their typical growth characteristics. Our protocol enables large-scale production of genetically uniform G. superba L. plants. This demonstrates the potential of tissue culture techniques in plant propagation and biotechnological applications, thereby contributing to current understanding and paving the way for future research.
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Research Article 2024-09-24
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247
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Establishment of in vitro culture conditions for mass-production and analysis of functional compound contents at culture stage in Rhododendron micranthum Turcz.
Jungmok Kang · Daeho Choi · Eun-Suk Jung · Yong-Woo Park
J Plant Biotechnol (2024) 51:228-236AbstractAbstract : In this study, suitable culture media, growth regulators, and acclimatization soil for regenerated plants were evaluated to enable mass production of Rhododendron micranthum, and the contents of functional compounds at culture stage were analyzed to confirm industrial applicability. For shoot proliferation, culturing in 4 mg/L zeatin-containing Murashige and Skoog medium was found to be the most effective treatment; the shoot induction rate was 77.08%, number of developing shoots was 2.8, and length of shoots was 9.01 mm. Regarding culture medium and growth regulator suitable for rooting, half-strength Economou and Read medium and 1 mg/L indole-3-butyric acid treatment were the most effective, with a rooting rate of 95.83%, root number of 4.1, and root length of 12.59 mm. Peatmoss was found to be most effective for facilitating ex vitro acclimatization of regenerated plants, with a seedling shoot length of 69.27 mm and root length of 49.30 mm. Chlorogenic acid, astragalin, myricetin, and afzelin contents were analyzed via high-performance liquid chromatography analysis at culture stage. The in vitro-rooted seedlings contained 3.77 mg/g chlorogenic acid, 1.53 mg/g astragalin, 1.07 mg/g myricetin, and 0.17 mg/g afzelin; the contents were higher than those in in vitro shoots (0.44 mg/g chlorogenic acid, 1.30 mg/g astragalin, 1.04 mg/g myricetin, and 0.05 mg/g afzelin) and increased as the stage progressed. We confirmed that these culture conditions can be used for additional research, such as increasing the contents of functional compounds and mass production research. Based on these findings, there is a possibility of supplying raw materials and producting four functional compound using in vitro culture of R. micranthum.
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Research Article 2024-07-26
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494
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Effect of silver nanoparticles and antioxidants on micropropagation of Rosa hybrida ‘Sahara’ via nodal culture
Jung Won Shin · Sejin Kim · Jin Hyun Choi · Chang Kil Kim
J Plant Biotechnol (2024) 51:219-226AbstractAbstract : Excessive ethylene production in rose tissue culture represents a major challenge that impacts rose health and cultivation. We aimed to investigate the effects of silver nitrate (AgNO3), silver nanoparticles (AgNPs), and antioxidants on plant growth and ethylene production to establish an in vitro growth method for Korean-cultivated Rosa hybrida ‘Sahara.’ Nodal explant cultures of shoots were grown in a medium containing AgNPs, AgNO3, or antioxidants (ascorbic acid, citric acid, or both). We assessed the impact on growth, ethylene production, reactive oxygen species levels, and expression of genes associated with ethylene biosynthesis and signal transduction. Addition of AgNPs and AgNO3 to the medium mitigated overhydration and chlorosis, leading to improved SPAD values, fresh weight, and growth parameters compared to those of the control. Superoxide anion levels in the AgNP treatment group were lower than in all other treatment groups (p < 0.05). Ethylene concentrations and ethylene biosynthetic gene expression levels were significantly lower in the AgNP and AgNO3 treatment groups than in the control group (p < 0.05). In contrast, antioxidant treatments showed significant effects. Therefore, AgNPs may be suitable for enhancing the quality of plantlets in rose tissue culture by mitigating ethylene production-related challenges.
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Research Article 2024-07-23
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365
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Production of human epidermal growth factor in cell suspension cultures of Centella asiatica (L.) Urban using balloon-type bubble bioreactors
Ga-Eun Baek ･ Han-Sol Lee ･ Xinlei Bai ･ Hosakatte Niranjana Murthy ･ Eun-Jeong Son ･ Hyo Hyun Seo ･ Sang Hyum Moh ･ So-Young Park
J Plant Biotechnol (2024) 51:206-218AbstractAbstract : Human epidermal growth factor (hEGF) has several medicinal and pharmacological applications. The aim of this study was to determine whether callus and cell suspension cultures of the medicinal plant Centella asiatica could produce hEGF. The callus of C. asiatica was transformed using Agrobacterium tumefaciens strains carrying the hEGF and hEGF-KDEL (KDEL sequence targeting peptides to endoplasmic reticulum) genes on plasmids pKRE1 and pKRE2, respectively, under the control of 35S promoters. Polymerase chain reaction (PCR) was performed using gene-specific primers to select transformed callus lines. Quantitative reverse transcription-PCR and western blotting were performed to confirm that EGF was expressed in the transformed lines. Cell suspension cultures were established in balloon-type bubble bioreactors using transformed EK2 cells. Efficiently transformed cell biomass was produced in bioreactor cultivation. The hEGF protein isolated from transformed cells induced the in vitro cell proliferation of human keratinocytes (HaCaT cells). Therefore, plant expression systems, particularly plant cell cultures, can produce recombinant hEGF.
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Research Article 2024-06-26
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440
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Morphological and histological characteristics of somatic embryo development of carrot (Daucus carota L.)
Young Jin Lee ･Pil Son Choi
J Plant Biotechnol (2024) 51:202-205AbstractAbstract : Embryogenic callus formation was induced from the cultures of hypocotyl explants of Daucus carota L. on Murashige and Skoog (MS) medium containing 1.0 mg/L 2,4-dichlorophenoxyacetic acid. Liquid cultures of the embryogenic cells or clumps were maintained on a shaker at 120 strokes/min, and then the embryogenic cells or clumps were sub-cultured in hormone-free MS medium for two weeks to develop somatic embryos. Somatic embryos obtained from the liquid cultures were classified as somatic embryos (two cotyledons) and abnormal multi-cotyledons (three or four cotyledons). The differentiation of procambial tissue in the somatic embryos initiated with a circular shape in the hypocotyl region and then connected to the cotyledon nodes; the tissue differentiated into the cotyledon region to form two cotyledons with two procambial strands, three cotyledons with three procambial strands, and four cotyledons with four procambial strands. These results suggest that the differentiation of procambium in somatic embryos is closely related to the number of cotyledons formed.
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Review 2024-06-26
2
1319
155
Agricultural sustainability through smart farming systems: A comparative analysis between the Republic of Korea and Republic of Uganda
Kenneth Happy ･ Roggers Gang ･ Yeongjun Ban ･ Sungyu Yang ･ Endang Rahmat ･ Denis Okello ･ Richard Komakech ･ Okello Cyrus ･ Kalule Okello David ･ Youngmin Kang
J Plant Biotechnol (2024) 51:167-201AbstractAbstract : Smart farming involves the integration of information and communication technologies into machinery and sensors for use in agricultural systems. It is expected to potentially enhance the sustainability of agriculture and global food security. The need for smart farming arises from the increasing adverse environmental, ecological, social, and economic impacts on food systems. The potential impact of smart farming solutions on different countries is less known. Therefore, we comprehensively analyzed the role of smart farming solutions in sustaining agricultural production in the context of comparing a developed (Republic of Korea) and an emergent (Republic of Uganda) country. We scrutinized the agricultural assets, natural resources, approaches, technologies, policy interventions, achievements, challenges encountered, and reasons of smart farm pursuit for each country. Information presented in the paper indicated that both countries have similar objectives in the pursuit for smart farming: response to climate change and sustaining food security. However, the Republic of Korea employs a holistic approach of revolutionizing agriculture via smart farms. In contrast, distinct smart farming interventions implemented by government institutions, competing private sector, and non-governmental organizations are shaping the development of a smart farm concept in the Republic of Uganda. In conclusion, application of smart farming solutions appears to be promising in enhancing the stability of the whole food system in both countries.
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Research Article 2024-05-29
1
271
67
Development of PCR-based markers for Solanum verrucosum via comparison of the complete chloroplast genome sequence of S. verrucosum with those of other Solanum species
Ju-Ryeon Jo ･Tae-Ho Park
J Plant Biotechnol (2024) 51:158-166AbstractAbstract : Solanum verrucosum is a species of wild potato originating from Mexico and is widely used for potato breeding owing to its late blight resistance. However, S. verrucosum is a diploid with an endosperm balanced number (EBN) of two; these properties differ from those of cultivated potatoes (S tuberosum). Therefore, it cannot be directly crossed with cultivated tetraploid potatoes for breeding purposes. Somatic fusion can overcome this problem; and it is important to select suitable somatic hybrids using molecular markers after somatic fusion. Therefore, we determined the complete chloroplast genome sequence of S. verrucosum using next-generation sequencing (NGS) technology, and compared it with sequences of eight other Solanum species to identify S. verrucosum-specific markers. The length of the complete chloroplast genome of S. verrucosum is 155,485 bp and its structure is almost identical to those of other Solanum species. Phylogenetic analysis of S. verrucosum compared with 16 other Solanaceae family members revealed that S. verrucosum was most closely grouped with S. demissum, S. hougasii, S. Stoloniferum and S. hjertingii. Sequence alignment of the complete chloroplast sequences of nine Solanum species including S. verrucosum identified three InDels and five SNPs specific to S. verrucosum. Based on these InDels and SNPs, four S. verrucosum-specific PCR-based markers were developed. The makers can be used to distinguish S. verrucosum from other Solanum species. Our findings will facilitate the selection of fusion products and advance potato breeding using S. verrucosum.
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Research Article 2024-05-23
0
242
63
Development of a green soybean line with a green cotyledon and a tetra null genotype for P34, lectin, Kunitz trypsin inhibitor, and lipoxygenase proteins
Sarath Ly ･Kwon Moon Jeong ･Byeong Eon Park･Jong Il Chung
J Plant Biotechnol (2024) 51:152-157AbstractAbstract : Soybean (Glycine max (L.) Merr.) varieties with a green seed coat and cotyledon have long been cultivated for their high levels of lutein, which is considered beneficial for eye health. However, mature soybean seeds also contain major antinutritional and allergenic factors, including P34, Kunitz trypsin inhibitor (KTI), lectin, and lipoxygenase proteins. The objective of this research was to develop a new soybean line with a green cotyledon and a green seed coat, and without P34, KTI, lectin, and lipoxygenase proteins. A breeding population was developed using two cultivars and three germplasms. Seventy-four F2 seeds with a green cotyledon and a green seed coat were obtained. Twenty-four F2 seeds with a tetra null genotype (p34p34-titi-lele-lox1lox1lox2lox2lox3lox3) were selected and planted in a greenhouse. One F2 plant that exhibited suitable agronomic traits was selected. The SDS-PAGE and western blot methods were used to determine the absence (tetra null genotype) of P34, KTI, lectin, and lipoxygenase proteins in random F3 seeds from the F2 plant selected. The color of the cotyledon and seed coat for the new selection line was green. The stem height was 72 cm and the 100-seed weight was 21.5 g. The new line obtained in this research could be bred into a soybean variety with a green cotyledon, a green seed coat, and fewer allergenic and antinutritional properties.
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Research Article 2024-05-29
1
282
56
Complete chloroplast genome of Solanum jamesii and development of PCR-based markers to discriminate between S. jamesii and other Solanum species
Ju-Ryeon Jo ･Tae-Ho Park
J Plant Biotechnol (2024) 51:143-151AbstractAbstract : Solanum jamesii is a wild Solanum species with a native range from northwestern Mexico to southwestern United States. It is a resource for potato breeding due to its resistance to late blight. However, S. jamesii is diploid and has an endosperm balanced number (EBN) of one, which hampers the sexual hybridization between S. jamesii and cultivated potatoes. To overcome this problem, somatic fusion can be performed. After fusion, molecular markers are necessary to select fusion products efficiently. In this study, therefore, the chloroplast genome of S. jamesii was sequenced using next-generation sequencing (NGS) technology and was compared with those of eight other Solanaceae species to develop specific markers for S. jamesii. The total length of the chloroplast genome sequence of S. jamesii is 155,576 bp. The structural organization of the chloroplast genome is almost identical to those of other Solanum species. Phylogenetic analysis with 17 other Solanaceae species showed that S. jamesii is most closely related to S. cardiophyllum. Detailed analysis of the chloroplast genome sequence of nine Solanum species identified two S. jamesii-specific InDels and 11 S. jamesii-specific SNPs. Based on these results, six S. jamesii-specific PCR-based markers were developed. The results of this study can be used to identify S. jamesii from other Solanum species and will contribute to the development of new potato varieties using S. jamesii.
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Review 2024-05-23
1
420
151
Phosphate depletion: research status and challenges in agriculture
Na-Hyun Shin ･Lae-Hyeon Cho
J Plant Biotechnol (2024) 51:129-142AbstractAbstract : Phosphate, an important macronutrient required for plant growth, is involved in various processes, including energy metabolism, and is also a key component of nucleic acids and phospholipids. Phosphorus fertilizers are not reusable and phosphate rock, which is the only phosphorus fertilizer resource, is limited and becoming depleted. To address this issue, phosphate transporters that can absorb phosphate from underground soil and transport it to plant aerial parts have been identified in Arabidopsis and major crops, such as rice, wheat, barley, maize, and soybean. Phosphate in the soil is primarily absorbed through diffusion via phosphate gradients between the soil and plant and transported to the shoot via the xylem. The plant uses the acquired phosphate and it accumulates in the seeds, thereby influencing plant growth for the next generation. Symbiotic phosphate acquisition via arbuscular mycorrhizal fungi and the genes or quantitative trait loci involved in increased phosphate uptake with enhanced yield have been reported. However, besides climate, soil phosphate uptake is affected by various environmental factors such as soil water content, pH, texture, temperature, and element composition. Thus, developing crops with desired traits for high phosphate uptake and phosphate-use efficiency and cultivating them in appropriate environments is essential. This review provides comprehensive information on transporters and genes or quantitative trait loci that are known to enhance phosphate acquisition and transportation. Moreover, we discuss measures to address the problem of phosphorus depletion.
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Research Article 2024-05-29
1
218
52
Completion of chloroplast genome sequence and development of PCR-based markers for Solanum pinnatisectum
Seoyeon Son ･Tae-Ho Park
J Plant Biotechnol (2024) 51:121-128AbstractAbstract : Solanum pinnatisectum, originating from Mexico, is a wild potato species valued for its resistance to various insects and pathogens, including the Colorado potato beetle, potato tuber moth, Phytophthora infestans, and Erwinia carotovorum. Despite its advantageous traits, S. pinnatisectum is diploid with an endosperm balanced number (EBN) of one, presenting sexual reproduction barriers with cultivated potatoes. Cell fusion methods can be employed to circumvent these barriers and integrate beneficial traits from S. pinnatisectum into cultivated potatoes. In this study, therefore, the chloroplast genome sequence of S. pinnatisectum was completed using next-generation sequencing (NGS) technology and compared with those of ten other Solanum species to develop specific PCR markers for S. pinnatisectum. The complete chloroplast genome of S. pinnatisectum is 155,597 bp in length and exhibits structural organization similar to those of other Solanum species. Sequence alignment of the complete chloroplast genomes sequences of eleven Solanum species, including S. pinnatisectum, identified 216 SNPs and 26 InDels unique to S. pinnatisectum. Based on these InDels and SNPs, six PCR-based markers were developed to identify the plastid genotype of S. pinnatisectum. The results of this study will be instrumental in distinguishing S. pinnatisectum from other Solanum species, selecting suitable genotypes for potato breeding through somatic hybridization, and accelerating the breeding program using S. pinnatisectum.
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Review 2024-05-20
0
289
79
Genetic elements controlling starch biosynthesis and secondary growth in root and tuber crops
Haruna Anate Abdulsalami ･Yookyung Lim ･Hyunwoo Cho
J Plant Biotechnol (2024) 51:111-120AbstractAbstract : Root and tuber crops (RTCs) are characterized by having underground organs as their main storage tissues, which they use for nutrient absorption. Simultaneous root thickening via secondary growth and nutrient accumulation are the two main indicators of yield and quality in RTCs. Given the crucial role of RTCs, specifically their high content of starch contributing to meeting the energy requirements of humans worldwide, being an important component of animal feed, having various industrial applications, and being used for biofuel production, researchers have made tremendous efforts toward studying hormonal signal transduction, transcription factor activity, and the expression of genes that regulate secondary growth and starch biosynthesis. These studies have focused primarily on a few RTCs, such as potatoes and sweet potatoes, neglecting important members that exhibit different developmental fates. A holistic and thorough understanding of the molecular mechanisms of secondary growth and starch biosynthesis in these crops is essential to address the ongoing climate change, rapidly increasing food demand, and various industrial requirements for starch-based materials. This paper reviews recent findings regarding hormone signaling, the role of transcription factors in secondary growth and starch biosynthesis, as well as gene expression during these two processes. The review emphasizes the necessity for further exploring these topics and proposes genes for which the expression requires elucidation. Thus, this article paves the way toward conducting focused research and obtaining data that can be adopted by RTC breeders and used as biotechnological tools to enhance the yield and qualities of starch in RTCs.
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Research Article 2024-04-22
0
993
167
In Silico identification of dengue NS5 phytochemical inhibitors as potential antiviral drug compounds via molecular docking
Earl Adriane Cano ･Jovito San Luis III ･Julia Cassandra Perez ･Aleezah Priela ･Eiby Grace Ramos ･ Mhizzy Reyes ･Luis Antonio Rico ･LJ Sabado
J Plant Biotechnol (2024) 51:100-110AbstractAbstract : Dengue fever is a viral disease caused by the dengue flavivirus, transmitted through the bites of infected mosquitoes. The endeavor to combat dengue has led many researchers to develop antiviral drugs. Several medicinal plants, containing diverse phytochemicals, exhibit potential for inhibiting pathogenic proteins and are employed in ongoing research and therapeutic advancement. This has piqued researchers’ interest in identifying potential plant-derived molecule inhibitors 』of the dengue virus Non-Structural Protein 5 (NS5) and analyzing their subsequent interactions. This study employed candidate selection and molecular docking using an in silico approach. We used the Protein Data Bank database and performed National Center for Biotechnology Information (NCBI) blastp analysis to gather and compare the best protein structures of the two NS5 serotypes. In addition, we identified ligand molecules previously reported to exhibit potential inhibitory effects against NS5 by retrieving their 3D structures from NCBI PubChem. Moreover, we utilized PyRx and PyMOL to perform molecular docking. The findings revealed a conspicuous prevalence of interactions between the MTase domain in NS5 and phytochemical compounds, notably Kaempferol and 6-Shogaol. Based on the evidence presented in this study, we propose that investigating the NS5 protein in flavivirus is necessary for dengue fever prevention, as these proteins play a vital role in the replication of the virus. Our findings provide valuable insights beneficial for advancing research into antiviral medication. We suggest further investigation into other medicinal plants that may inhibit dengue and the additional scrutiny of Kaempferol and 6-Shogaol, the compounds that yielded significant results in this study
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Research Article 2024-04-16
0
424
100
Evaluating the insecticidal potential of ethanol extracts from Melia azedarach Linn. against Bactrocera cucurbitae - a pest inflicting damage on Momordica charantia Linn.
Tran Thi Phuong Nhung ･Le Pham Tan Quoc
J Plant Biotechnol (2024) 51:089-099AbstractAbstract : This study explores the insecticidal efficacy of ethanol extracts - obtained from the fruits and seeds of Melia azedarach (MAFS) - against Bactrocera cucurbitae. We assessed the effectiveness of the MAFS extracts at concentrations ranging from 1 to 625 ppm using both laboratory and greenhouse models. Sofri protein 10 DD (1.2 liters/ha) served as the standard insecticide, while water functioned as the negative control. Key parameters evaluated include pupation period, germination time, quantities of pupae and adult individuals, and the severity of damage to bitter melon fruits. In the laboratory model, MAFS significantly prolonged the pupation period (p < 0.05), reduced pupal numbers (p < 0.05), and affected the pupation percentage of B. cucurbitae (p < 0.05). In addition, the germination time (p < 0.05) and proportion of adult B. cucurbitae emergence (p < 0.05) were also significantly impacted. In the greenhouse experiment, MAFS significantly reduced the quantity of B. cucurbitae eggs on bitter melon plants (p < 0.05), resulting in a notable decrease in both larval (p < 0.05) and pupal quantities (p < 0.05). The inhibitory effects of MAFS on larval (p < 0.05) and pupal quantities (p < 0.05), as well as survival from the larval to adult stage, were equivalent to the sofri protein (p < 0.05). MAFS effectively mitigated the severity of damage to bitter melon fruits caused by B. cucurbitae (p < 0.05). Moreover, MAFS exhibits significant effects throughout the various developmental stages of B. cucurbitae. These findings support the potential of MAFS ethanol extracts as an efficient and eco-friendly solution for pest infestation management.
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Review 2024-04-09
0
954
206
Industrial interests and requirements for improvement of pearl millet, a gluten-free and climate-smart underutilized cereal
Leila Riahi ･Mériam Ben-Romdhane ･Ahmed S. Masmoudi
J Plant Biotechnol (2024) 51:077-088AbstractAbstract : Pearl millet is a small-seeded staple crop in arid and semi-arid regions of Africa and Asia. It is the crop of choice in the hottest and driest climates where other cereals do not grow well and is considered a future climate-smart cereal. This underutilized cereal provides nutritional and food security to millions of people. It is also used as animal feed, fuel, and fodder as well as in brewing. The gluten-free grains of this cereal are rich sources of fats, proteins, carbohydrates, minerals, especially iron and zinc, and phenolics with health-promoting properties. Pearl millet also has industrial uses in the production of bioenergy, biodegradable products, bio-coagulants, and construction materials, and in tissue engineering. Pearl millet hybrids have gained considerable popularity among Indian farmers, resulting in a significant increase in production yields. However, pearl millet production in Africa is primarily dependent on traditional landraces with limited acceptance of improved open-pollinated varieties and hybrids. Consequently, no significant increase in pearl millet production has been achieved over the past few decades. Despite its inherent resilience against poor climates, this staple crop faces a complex array of abiotic and biotic stresses in its production areas, which is exacerbated by ongoing climate change. Furthermore, certain anti-nutritional traits impede its overall nutritional value and effective utilization. Hence, improving pearl millet is a continuous and significant challenge for plant breeders and biotechnologists.
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Research Article 2024-04-08
0
369
113
Genome-wide identification of oleosin family and expression analysis in response to abiotic stresses in balloon flower (Platycodon grandiflorus)
Eunhui Kim･Tae Kyung Hyun
J Plant Biotechnol (2024) 51:071-076AbstractAbstract : Oleosins (OLEs) are structural proteins commonly found within oil bodies (OBs), playing a significant role in regulating the number, size, and stability of OBs. Therefore, this study aims to comprehensively analyze the OLE family in balloon flower (Platycodon grandiflorus) - a significant medicinal plant. Through genome-wide exploration and bioinformatics analyses, we identified and characterized five putative OLE proteins from P. grandiflorus (PlgOLEs). This study provides a comprehensive overview of this gene family in balloon flowers, including phylogenic analysis, conserved motifs, isoelectric points, and hydrophobicity. The study revealed the presence of central hydrophobic regions with a proline knot motif, a characteristic feature shared by OLE proteins in various plant species. Additionally, tissue-specific expression analysis revealed that PlgOLEs were predominantly expressed in seeds, indicating their crucial role in seed OB stability. Furthermore, expression profiling under abiotic stresses demonstrated that PlgOLEs are stress-inducible genes, suggesting their diverse physiological functions in stress responses. These findings shed light on the functional diversity of OLEs in balloon flowers and establish a basis for further research, including genetic modification studies, to elucidate their physiological roles.
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Research Article 2024-03-28
0
441
116
Effects of flooding conditions and phytohormones on coleoptile elongation in Indica rice varieties
Khac Nhu Nghi ･Ngoc Ai Trinh
J Plant Biotechnol (2024) 51:063-070AbstractAbstract : The unpredictable scenarios of current climate change pose great challenges for global food security. Climate change triggers submergence, a natural disaster that affects cereal production in the Mekong Delta of Vietnam. Among cereals, rice is a unique species in its ability to germinate and develop a long coleoptile under water. Several previous studies indicated that the capacity of japonica rice is better than indica rice cultivars. Herein, we assessed the ability of coleoptile elongation and the role of exogenous auxin (IAA) in promoting rice coleoptile length under dark, flooded conditions using 20 indica rice varieties collected from the Mekong Delta. We germinated 20 rice seeds per variety under water (with and without adding auxin at different concentrations) for several days and measured the coleoptile length at two different timepoints of submergence. We found that the ability to develop a long coleoptile under water was not related to the rice subspecies. The average coleoptile length at day 8 and the growth curve from the beginning to day 8 of the submergence experiment of our rice cultivars were the same. We also found that 10 μM of IAA concentration expressed a significant effect on the capacity of coleoptile elongation in both long and short coleoptile-harboring indica rice subspecies. Our results suggested that OM108, OM5451, and ĐT8 are promising rice cultivars for rice production in the Mekong Delta of Vietnam.
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Research Article 2024-03-07
2
859
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Best practices for initiation of banana and plantain (Musa spp.) cultures
Fatma H. Kiruwa ･Emanuel Epathra Mlinga ･Agatha Amnaay Aloyce ･Mpoki Mathew Shimwela
J Plant Biotechnol (2024) 51:055-062AbstractAbstract : Banana is a staple food and income crop worldwide. Here, we identified the best practices for the initiation of banana (Musa spp.) cultures. The cultivars studied included East African highland bananas (Mshare/Mchare and Nshakara) and plantains (Mzuzu), which are highly demanded by farmers. The following factors were assessed: sterilization techniques for rainy and dry seasons, explant size, effect of benzylaminopurine (BAP) concentration on regeneration of cultures, effect of ascorbic acid on culture browning, and culturing conditions. We found that treatment with ethanol alone (70%) or in combination with sodium hypochlorite (1%) yielded a relatively higher proportion (≥ 96%) of aseptic culture establishment in both rainy and dry seasons. Explant size affected the survival and regeneration of cultures where small explants (< 10 mm) like meristem dome showed relatively slower re-growth and high mortality in contrast to large explants (≥ 10 mm). Moreover, culturing in BAP-supplemented Murashige and Skoog medium (MS) significantly enhanced the greening/shoot regeneration percentage at 14 d. However, there was no significant increase in number of green shoots/culture regeneration at BAP concentrations of 5 mg/l, 6 mg/l, and 8 mg/l for Nshakara and 3 mg/l, 5 mg/l, and 6 mg/l for Mzuzu. Browning decreased by 18% when explants were pre-treated with 100 mg/l ascorbic acid for 10 min. Further, growth conditions such as light were a relatively greater determinant for regeneration of initiated banana cultures. Therefore, our findings suggest the use of appropriate sterilization techniques, explant size, growth regulators, and conditions to ensure sufficient production of planting materials.
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Research Article 2024-03-05
1
599
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Chemical profile and antimicrobial activity of Ocimum gratissimum L. essential oil from Dak Lak province, Vietnam
Pham My Hao ･Le Pham Tan Quoc
J Plant Biotechnol (2024) 51:050-054AbstractAbstract : Essential oils (EOs) are predominantly found in odorous plants, particularly in Mediterranean and tropical countries worldwide. These oils hold significant value as crucial components in traditional medicine systems. Moreover, they are widely used in food technology, medicine, and cosmetics. EOs of different origins may have unique properties. Therefore, this study aimed to design and analyze the chemical composition and antimicrobial activity of the EO extracted from Ocimum gratissimum L., sourced from Dak Lak province (Vietnam). The chemical composition of the EO was assessed using gas chromatography-mass spectrometry. The results showed 23 compounds, with eugenol accounting for the highest proportion (76.01%) and its EO exhibiting potent antimicrobial activity against Escherichia coli, Salmonella typhimurium, Bacillus cereus, and Staphylococcus aureus, as assessed via the agar disc diffusion method. Therefore, the EO extracted from O. gratissimum can be considered a natural antibacterial and aromatic agent suitable for application in the pharmaceutical and food industries.
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Research Article 2024-02-19
1
788
163
Transcriptome analysis of a tropical medicinal plant, Pistacia weinmannifolia
Mi Kyung Choi ･Bimpe Suliyat Azeez ･Sang Woo Lee ･Wan Yi Li ･Sangho Choi ･Ik-Young Choi ･Ki-Young Choi ･Jong-Kuk Na
J Plant Biotechnol (2024) 51:033-049AbstractAbstract : Pistacia weinmannifolia has long been used as an herbal medicine for treating various illnesses. The genomic information of P. weinmannifolia will help elucidate the chemical constituents that exert medicinal effects; however, genomic studies have rarely been performed. Therefore, we conducted a transcriptome analysis of P. weinmannifolia using the Illumina RNA sequencing system. We obtained a total of 18 million high-quality paired-end reads with 2,230 Mbp. De novo assembly of high-quality reads generated a total of 18,956 non-redundant contigs with an average length of 901 bp, of which 18,296 contigs (96.5%) were annotated. The total length of all unigenes was 17,080,830 bp, and the GC content and N50 were 43.2% and 1,137 bp, respectively. Annotation using The Kyoto Encyclopedia of Genes and Genomes (KEGG) assigned a total of 5,095 unigenes (26.9%), of which 3,166 were mapped to 410 different KEGG metabolic pathways. A comparison of unigenes between P. weinmannifolia and Pistacia chinensis showed that 8,825 unigenes were highly similar to each other. Simple sequence repeats were mined, and valuable data for further comparative and functional genomic studies were obtained to uncover the mechanisms underlying the medicinal properties of P. weinmannifolia as an important medicinal plant. Several genes of P.weinmannifolia involved in the biosynthesis of eugenol and isoeugenol were also identified in this study.
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Research Article 2024-01-25
2
954
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Effects of plant hormones on the characteristics and the genetic stability of calli induced from the ex vitro tissues of Celosia argentea var cristata
Nhat-Anh Tran-Nguyen･My Y Huynh･Hong Hanh Doan･Phuong Ngo Diem Quach･Thanh-Hao Nguyen･ Vi An Ly
J Plant Biotechnol (2024) 51:024-032AbstractAbstract : Celosia argentea var cristata, commonly known as the cockscomb plant, is a popular ornamental species in Vietnam. Its propagation primarily relies on seeds, enabling widespread cultivation but leading to a notable absence of micropropagation research in the country. This practice poses a potential threat to preserving unique traits susceptible to loss through segregation. To address this gap, this study focused on the impact of plant hormones on callus formation in various aerial tissues - leaves, stems, and newly emerging inflorescences - gathered from plants grown on soil. The calli displayed distinct morphological characteristics under the influence of different combinations of 6-Benzyladenine (BAP), 1-Naphthaleneacetic acid (NAA), and 2,4-Dicholorophenoxyacetic acid (2,4-D). Furthermore, we investigated the genetic stability of C. argentea var cristata calli using random amplified polymorphic DNA (RAPD) markers. The calli persistently cultured on medium containing 2 mg/L BAP and 2 mg/L NAA maintained their genetics stability, as assessed through four RAPD markers: OPA-13, OPA-15, OPA-18 (G), and OPD-2.
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Research Article 2024-01-23
1
647
212
Assessment of the antioxidant and nematicidal activities of an aqueous extract of Chromolaena odorata (L.) King and Robins against Radopholus similis infestation in Cavendish banana plants: An in vitro and in vivo study
Tran Thi Phuong Nhung･Le Pham Tan Quoc
J Plant Biotechnol (2024) 51:011-023AbstractAbstract : Here, we investigated the antioxidant and nematicidal activities of the aqueous leaf and stem extract of Chromolaena odorata (L.) (AECO) against Radopholus similis, a nematode pest of banana plants. In vitro antioxidant analysis involved testing AECO at concentrations ranging from 50 to 300 μg/mL in 2,2-diphenylpicrylhydrazyl (DPPH) and 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical-scavenging assays. Both in vitro and in vivo experiments were performed using doses of 780, 1,560, 3,120, 6,250, and 12,500 mg DW/L AECO. We assessed the egg hatching inhibition and juvenile survival rate of R. similis, content of antioxidant compounds in banana roots, dry weight of the aerial parts and roots, and the nematode density in the soil. In vitro antioxidant assays revealed substantial DPPH-scavenging (59.67-92.13%) and ABTS radical inhibition (37.26% at 300 μg/mL) activities. In vitro experiments using 12,500 mg DW/L AECO exhibited significant inhibition (p < 0.05) of R. similis egg hatching (26.98%, 55.25%, and 82.92% at 24, 48, and 72 h, respectively) and reduced juvenile survival (p < 0.05). In vivo experiments demonstrated a significant decrease (p < 0.05) in malondialdehyde concentration and an increase (p < 0.05) in antioxidant production (glutathione, catalase, and superoxide dismutase) in banana roots after AECO treatment. Plant biomass showed significant differences (p < 0.05), with the highest values (15.38 ± 0.13 g the aerial part dry weight and 29.32 ± 0.15 g the root dry weight) recorded in the AECO12500 treatment. Notably, R. similis density was significantly decreased (p < 0.05) in the soil after AECO treatment, with maximum inhibition obtained using 12,500 mg/kg. These findings emphasize the potential of AECO for pest management and its relevance to the cultivation of Cavendish bananas.
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Research Article 2024-01-12
2
639
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Overexpression of ZjWRKY10, a Zoysia japonica WRKY transcription factor gene, accelerates leaf senescence and flowering in transgenic Arabidopsis
Yueyue Yuan･Ji-Hi Son･Mi-Young Park･Hyeon-Jin Sun･Hyo-Yeon Lee･Hong-Gyu Kang
J Plant Biotechnol (2024) 51:001-010AbstractAbstract : The WRKY transcription factors play an important role in plants’ stress response, leaf senescence, growth, and development. In this study, we cloned ZjWRKY10 from the leaf of Korean lawngrass (Zoysia japonica), a warm-season turf; the deduced protein sequence showed high homology with the TaWRKY10 protein of wheat. The ZjWRKY10 and TaWRKY10 genes belong to group IIc of the WRKY transcription factor family, which regulates tolerance to multiple abiotic stresses. The study’s results showed that ZjWRKY10 was slightly upregulated by cold, sodium chloride, and polyethylene glycol 6000 treatments; however, it was strongly activated by a dark treatment. When ZjWRKY10 was overexpressed in Arabidopsis thaliana after dark treatment, it resulted in earlier leaf senescence compared with wild-type plants. In addition, the transgenic plants overexpressing ZjWRKY10 showed early-flowering phenotypes when exposed to long-day conditions compared with the wild-type plants. When comparing the transgenic with the wild-type plants, the increased expression of the FLOWERING LOCUS T (FT) gene, vital in triggering flowering, supported the earlier flowering observed in the transgenic Arabidopsis plants. These results support that ZjWRKY10 may be involved in the regulation of leaf senescence and flowering.
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Agrobacterium-mediated transformation produces transgenic oilseed rape with a high-yield trait
Jong Bo Kim
J Plant Biotechnol 2023;50: 63-69 -
Somatic embryogenesis induction in four cassava landraces in East Java, Indonesia
Slameto ･Indri Fariroh ･Budi Kriswanto ･Didik Pudji Restanto ･Kacung Hariyono
J Plant Biotechnol 2023;50: 11-18
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Chloroplast genome sequence and PCR-based markers for S. cardiophyllum
Tae-Ho Park
J Plant Biotechnol 2023;50: 45-55 -
Biomass partitioning and physiological responses of four Moroccan barley varieties subjected to salt stress in a hydroponic system
Said Bouhraoua ･Mohamed Ferioun ･Srhiouar Nassira ･Abdelali Boussakouran ･Mohamed Akhazzane ･ Douae Belahcen ･Khalil Hammani ･Said Louahlia
J Plant Biotechnol 2023;50: 115-126
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