The BEL1-like transcription factor GhBLH5-A05 participates in cotton response to drought stress  

作　　者：Jing-Bo Zhang Yao Wang Shi-Peng Zhang Fan Cheng Yong Zheng Yang Li Xue-Bao Li 

机构地区：[1]Hubei Key Laboratory of Genetic Regulation and Integrative Biology,School of Life Sciences,Central China Normal University,Wuhan 430079,Hubei,China [2]College of Life Sciences,Xinjiang Normal University,Urumqi 830017,Xinjiang,China

出　　处：《The Crop Journal》2024年第1期177-187,共11页作物学报（英文版）

基　　金：supported by the Project from the Ministry of Agriculture of China for Transgenic Research(2014ZX0800927B);the National Natural Science Foundation of China(31871667).

摘　　要：Drought stress impairs crop growth and development.BEL1-like family transcription factors may be involved in plant response to drought stress,but little is known of the molecular mechanism by which these proteins regulate plant response and defense to drought stress.Here we show that the BEL1-like transcription factor GhBLH5-A05 functions in cotton(Gossypium hirsutum)response and defense to drought stress.Expression of GhBLH5-A05 in cotton was induced by drought stress.Overexpression of GhBLH5-A05 in both Arabidopsis and cotton increased drought tolerance,whereas silencing GhBLH5-A05 in cotton resulted in elevated sensitivity to drought stress.GhBLH5-A05 binds to cis elements in the promoters of GhRD20-A09 and GhDREB2C-D05 to activate the expression of these genes.GhBLH5-A05 interacted with the KNOX transcription factor GhKNAT6-A03.Co-expression of GhBLH5-A05 and GhKNAT6-A03 increased the transcription of GhRD20-A09 and GhDREB2C-D05.We conclude that GhBLH5-A05 acts as a regulatory factor with GhKNAT6-A03 functioning in cotton response to drought stress by activating the expression of the drought-responsive genes GhRD20-A09 and GhDREB2C-D05.

关 键 词：Cotton(Gossypium hirsutum) BEL1-like transcription factor Drought stress Transcriptional regulation Drought tolerance 

分 类 号：S562[农业科学—作物学]