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Isolation, characterization and expression of transcription factor ScDREB2 from wild, commercial and interspecific hybrid sugarcane in salinity condition
J Plant Biotechnol 2019;46:97-105
Published online June 30, 2019
© 2019 The Korean Society for Plant Biotechnology.

Sontichai Chanprame · Tanawan Promkhlibnil · Sakulrat Suwanno · Chanakan Laksana

Center for Agricultural Biotechnology, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand and The Center of Excellence on Agricultural Biotechnology, (AG-BIO/PERDO-CHE), Thailand,
Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen Campus, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand,
Program in Plant Breeding, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand,
Faculty of Agricultural Technology, Burapha University Sakaeo Campus, Sakaeo 27160, Thailand
Correspondence to: e-mail:
Received April 26, 2019; Revised May 16, 2019; Accepted May 27, 2019.
cc This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Dehydration Responsive Element Binding (DREB) gene is one of the essential transcription factors plants use for responding to stress conditions including salinity, drought, and cold stress. The purpose of this study was to isolate the full length and characterize the DREB gene from three different genotypes of sugarcane, wild, commercial cultivar, and interspecific hybrid sugarcane. The length of the gene, designated ScDREB was 789 bp, and coding for a putative polypeptide of 262 amino acid residues. Sequences of the gene were submitted to the GenBank database with accession numbers of KX280722.1, KX280721.1, and KX280719.1 for wild sugarcane, commercial cultivar (KPS94-13), and interspecific hybrid (Biotec2), respectively. In silico characterization indicated that the deduced polypeptide contains a putative nuclear localization signal (NLS) sequence, and a conserved AP2/ERF domain of the DREB family, at 82-140 amino residues. Based on multiple sequence alignment, sequences of the gene from the three sugarcane genotypes were classified in the DREB2 group. Gene expression analysis indicated, that ScDREB2 expression pattern in tested sugarcane was up-regulated by salt stress. When the plants were under 100 mM NaCl stress, relative expressions of the gene in leaves was higher than those in roots. In contrast, under 200 mM NaCl stress, relative expressions of the gene in roots was higher than those in leaves. This is the first report on cloning the full length and characterization, of ScDREB2 gene of sugarcane. Results indicate that ScDREB2 is highly responsive to salt stress.
Keywords : DREB2, Hydroponic, Sugarcane, Salt stress, Gene expression

June 2019, 46 (2)
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