OsPRX2 contributes to stomatal closure and improves potassium deficiency tolerance in rice

文献类型: 外文期刊

第一作者: Mao, Xiaohui

作者: Mao, Xiaohui;Xie, Huaan;Zhang, Jianfu;Mao, Xiaohui;Zheng, Yanmei;Xiao, Kaizhuan;Wei, Yidong;Zhu, Yongsheng;Cai, Qiuhua;Chen, Liping;Xie, Huaan;Zhang, Jianfu;Mao, Xiaohui;Zheng, Yanmei;Xiao, Kaizhuan;Wei, Yidong;Zhu, Yongsheng;Cai, Qiuhua;Chen, Liping;Xie, Huaan;Zhang, Jianfu;Mao, Xiaohui;Zheng, Yanmei;Xiao, Kaizhuan;Wei, Yidong;Zhu, Yongsheng;Cai, Qiuhua;Chen, Liping;Xie, Huaan;Zhang, Jianfu;Mao, Xiaohui;Zheng, Yanmei;Xiao, Kaizhuan;Wei, Yidong;Zhu, Yongsheng;Cai, Qiuhua;Chen, Liping;Xie, Huaan;Zhang, Jianfu

作者机构:

关键词: 2-Cys peroxiredoxins;Potassium;Stomatal closure;Rice

期刊名称:BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS ( 影响因子:3.575; 五年影响因子:3.381 )

ISSN: 0006-291X

年卷期: 2018 年 495 卷 1 期

页码:

收录情况: SCI

摘要: Peroxiredoxins (Prxs) which are thiol-based peroxidases have been implicated in the toxic reduction and intracellular concentration regulation of hydrogen peroxide. In Arabidopsis thaliana At2-CysPrxB (At5g06290) has been demonstrated to be essential in maintaining the water-water cycle for proper H2O2 scavenging. Although the mechanisms of 2-Cys Prxs have been extensively studied in Arabidopsis thaliana, the function of 2-Cys Prxs in rice is unclear. In this study, a rice homologue gene of At2-CysPrxB, OsPRX2 was investigated aiming to characterize the effect of 2-Cys Prxs on the K+-deficiency tolerance in rice. We found that OsPRX2 was localized in the chloroplast. Overexpressed OsPRX2 causes the stomatal closing and K+-deficiency tolerance increasing, while knockout of OsPRX2 lead to serious defects in leaves phenotype and the stomatal opening under the K+-deficiency tolerance. Detection of K+ accumulation, antioxidant activity of transgenic plants under the starvation of potassium, further confirmed that OsPRX2 is a potential target for engineering plants with improved potassium deficiency tolerance. (C) 2017 Elsevier Inc. All rights reserved.

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