On-line First

J Plant Biotechnol

Published online April 16, 2024

© The Korean Society of Plant Biotechnology

Genetic elements controlling starch biosynthesis and secondary growth in Root and Tuber Crops (RTCs).

Haruna Anate Abdulsalalmi 1, Yookyung Lim 1, Hyunwoo Cho 1*

Department of Industrial Plant Science and Technology, Chungbuk National University, Cheongju 28644, Korea

Received: 5 April 2024; Revised: 15 April 2024; Accepted: 16 April 2024

Abstract

Root and tuber crops (RTCs) are characterized by underground organs as the main storage tissues for nutrient accumulation. Root thickening through secondary growth and the concurrent accumulation of nutrients are the two major indicators for assessing yield and quality of members of this group. Given the critical role of RTCs regarding their starch content on a global scale for human calorie needs, animal feed, industrial demands across various uses, and biofuel production, researchers in recent decades have made tremendous efforts in studying hormonal signal transduction, transcription factors activities, and gene expression regulating secondary growth and starch biosynthesis. This focus has primarily been on a few members of this group such as potatoes and sweet potatoes with a lack of information about other important members that exhibit different developmental fates. An integrated and in-depth understanding of the molecular mechanisms regulating secondary growth and starch biosynthesis in these crops is essential to address ongoing climate change, rapidly increasing food demand, and diverse industrial needs for starch materials. This review highlights recent findings regarding hormones signaling, the role of transcription factors during secondary growth and starch biosynthesis, as well as gene expressions during these two processes. It emphasizes the necessity for further exploration and proposes candidate genes whose expressions require elucidation, paving the way for a focused research direction could be adopted by RTCs breeders and utilized as biotechnological tools to enhance the yield and qualities of starch in these crops.

Keywords RTCs, Hormones signal network activites, Transcriptional regulatiors, Secondary growth, Starch biosynthesis

Article

On-line First

J Plant Biotechnol

Published online April 16, 2024

Copyright © The Korean Society of Plant Biotechnology.

Genetic elements controlling starch biosynthesis and secondary growth in Root and Tuber Crops (RTCs).

Haruna Anate Abdulsalalmi 1, Yookyung Lim 1, Hyunwoo Cho 1*

Department of Industrial Plant Science and Technology, Chungbuk National University, Cheongju 28644, Korea

Received: 5 April 2024; Revised: 15 April 2024; Accepted: 16 April 2024

Abstract

Root and tuber crops (RTCs) are characterized by underground organs as the main storage tissues for nutrient accumulation. Root thickening through secondary growth and the concurrent accumulation of nutrients are the two major indicators for assessing yield and quality of members of this group. Given the critical role of RTCs regarding their starch content on a global scale for human calorie needs, animal feed, industrial demands across various uses, and biofuel production, researchers in recent decades have made tremendous efforts in studying hormonal signal transduction, transcription factors activities, and gene expression regulating secondary growth and starch biosynthesis. This focus has primarily been on a few members of this group such as potatoes and sweet potatoes with a lack of information about other important members that exhibit different developmental fates. An integrated and in-depth understanding of the molecular mechanisms regulating secondary growth and starch biosynthesis in these crops is essential to address ongoing climate change, rapidly increasing food demand, and diverse industrial needs for starch materials. This review highlights recent findings regarding hormones signaling, the role of transcription factors during secondary growth and starch biosynthesis, as well as gene expressions during these two processes. It emphasizes the necessity for further exploration and proposes candidate genes whose expressions require elucidation, paving the way for a focused research direction could be adopted by RTCs breeders and utilized as biotechnological tools to enhance the yield and qualities of starch in these crops.

Keywords: RTCs, Hormones signal network activites, Transcriptional regulatiors, Secondary growth, Starch biosynthesis

JPB
Vol 51. 2024

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Plant Biotechnology

pISSN 1229-2818
eISSN 2384-1397
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