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Overexpression of CsSnRK2.5 increases tolerance to drought stress in transgenic Arabidopsis by Zhang, Yongheng; Wan, Siqin; Liu, Xianghong; He, Jingyuan; Cheng, Long; Duan, Mengsha; Liu, Huan; Wang, Weidong; Yu, Youben is a Agricultural and Biological Sciences article available to read on EtoBox.

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Drought is a major factor limiting crop productivity and quality. Sucrose non-fermenting-1 (SNF1)-related protein kinase 2s (SnRK2s) play critical roles in plant abiotic stress responses, especially in drought stress. However, knowledge regarding the functional roles of SnRK2s in drought stress and their underlying mechanisms is relatively limited in tea plant. In this study, CsSnRK2.5, a PEG 6000- and ABA-induced SnRK2 gene from tea plant, was overexpressed in Arabidopsis to investigate its potential function in drought stress response. The results showed that overexpression of CsSnRK2.5 resulted in enhanced drought tolerance, as indicated by an amelioration of the changes in various physiological indexes, including a decreased rate of water loss and decreased accumulation of ROS and MDA. In addition, CsSnRK2.5 overexpression conferred hypersensitivity to exogenous ABA, and transgenic plants exhibited improved ABA-mediated stomatal closure compared to WT plants. Moreover, the expression of some stress response genes, including AtRAB18 and AtRD29b, was more strongly induced in transgenic plants than in the WT when subjected to ABA and drought treatments. Taken together, our results

Who reads Overexpression of CsSnRK2.5 increases tolerance to drought stress in transgenic Arabidopsis?

Author

Zhang, Yongheng; Wan, Siqin; Liu, Xianghong; He, Jingyuan; Cheng, Long; Duan, Mengsha; Liu, Huan; Wang, Weidong; Yu, Youben

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0981-9428)

Published

2020

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)