数字农科院2.0

Characterization Of Transcription Factor Gene &.Itosdrap1&It Conferring Drought Tolerance I n Rice

文献类型： 外文期刊

作者： Huang, Liyu;Huang, Liyu;Li, Zhikang;Wang, Wensheng;Zhao, Yan;Zhao, Xiuqin;Wang, Yinxiao;Qin, Qiao;Li, Zichao;Li, Zhikang;Sun, Fan;Fu, Binying;Fu, Binying;Hu, Fengyi

作者机构：

关键词： DREB; drought tolerance; OsDRAP1; overexpression; rice; transcription factor

期刊名称： FRONTIERS IN PLANT SCIENCE

ISSN： 1664-462X

年卷期： 2018 年 9 卷

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摘要： The dehydration responsive element binding (DREBs) genes are important transcription factors which play a crucial role in plant abiotic stress tolerances. In this study, we functionally characterized a DREB2-like gene, OsDRAP1 conferring drought tolerance (DT) in rice. OsDRAP1, containing many cis-elements in its promoter region, was expressed in all organs (mainly expressed in vascular tissues) of rice, and induced by a variety of environmental stresses and plant hormones. Overexpressing OsDRAP1 transgenic plants exhibited significantly improved DT; while OsDRAP1 RNA interfering plants exhibited significantly reduced DT which also accompanied with significant negative effects on development and yield. Overexpression of OsDRAP1 has a positive impact on maintaining water balance, redox homeostasis and vascular development in transgenic rice plants under drought stress. OsDRAP1 interacted with many genes/proteins and could activate many downstream DT related genes, including important transcription factors such as OsCBSX3 to response drought stress, indicating the OsDRAP1 -mediated pathways for DT involve complex genes networks. All these results provide a basis for further complete understanding of the OsDRAP1 mediated gene networks and their related phenotypic effects.

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