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NPR1 and Redox Rhythmx: Connections, between Circadian Clock and Plant Immunity.

Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. twinklezhang@stumail.nwu.edu.cn. College of Life Sciences, Northwest University, Xi'an 710069, China. twinklezhang@stumail.nwu.edu.cn. Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. reneeziyu@stumail.nwu.edu.cn. College of Life Sciences, Northwest University, Xi'an 710069, China. reneeziyu@stumail.nwu.edu.cn. Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. desertree0302@163.com. College of Life Sciences, Northwest University, Xi'an 710069, China. desertree0302@163.com. Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. 0mazheng0@stumail.nwu.edu.cn. College of Life Sciences, Northwest University, Xi'an 710069, China. 0mazheng0@stumail.nwu.edu.cn. Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Xi'an 710069, China. 0mazheng0@stumail.nwu.edu.cn. Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. mayanqin@stumail.nwu.edu.cn. College of Life Sciences, Northwest University, Xi'an 710069, China. mayanqin@stumail.nwu.edu.cn. Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Xi'an 710069, China. mayanqin@stumail.nwu.edu.cn. Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. dairuhou@stumail.nwu.edu.cn. College of Life Sciences, Northwest University, Xi'an 710069, China. dairuhou@stumail.nwu.edu.cn. Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. ziqinxu@nwu.edu.cn. College of Life Sciences, Northwest University, Xi'an 710069, China. ziqinxu@nwu.edu.cn. Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Xi'an 710069, China. ziqinxu@nwu.edu.cn. Provincial Key Laboratory of Biotechnology of Shaanxi, Xi'an 710069, China. xuanhuang@nwu.edu.cn. College of Life Sciences, Northwest University, Xi'an 710069, China. xuanhuang@nwu.edu.cn. Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Xi'an 710069, China. xuanhuang@nwu.edu.cn.

International journal of molecular sciences. 2019;(5)
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Abstract

The circadian clock in plants synchronizes biological processes that display cyclic 24-h oscillation based on metabolic and physiological reactions. This clock is a precise timekeeping system, that helps anticipate diurnal changes; e.g., expression levels of clock-related genes move in synchrony with changes in pathogen infection and help prepare appropriate defense responses in advance. Salicylic acid (SA) is a plant hormone and immune signal involved in systemic acquired resistance (SAR)-mediated defense responses. SA signaling induces cellular redox changes, and degradation and rhythmic nuclear translocation of the non-expresser of PR genes 1 (NPR1) protein. Recent studies demonstrate the ability of the circadian clock to predict various potential attackers, and of redox signaling to determine appropriate defense against pathogen infection. Interaction of the circadian clock with redox rhythm promotes the balance between immunity and growth. We review here a variety of recent evidence for the intricate relationship between circadian clock and plant immune response, with a focus on the roles of redox rhythm and NPR1 in the circadian clock and plant immunity.

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Publication Type : Review

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