Two central circadian oscillators OsPRR59 and OsPRR95 modulate magnesium homeostasis and carbon fixation in rice
作者机构：Root Biology CenterFujian Agriculture and Forestry UniversityFuzhou 350002China College of Biological and Environmental EngineeringBinzhou UniversityBinzhou 256603China
出 版 物：《Molecular Plant》 (分子植物（英文版）)
年 卷 期：2022年第15卷第10期
页 面：1602-1614页
核心收录：
基 金：the National Nat-ural Science Foundation of China(nos.32022077 and 31872171)
主 题：OsPRR OsMGT3 photosynthesis magnesium rice
摘 要：Photosynthesis,which provides oxygen and energy for all living organisms,is circadian ***-associated metabolism must tightly coordinate with the circadian clock to maximize the efficiency of the light-energy capture and carbon ***,the molecular basis for the interplay of photosynthesis and the circadian clock is not fully understood,particularly in crop ***,we report two central oscillator genes of circadian clock,OsPRR95 and OsPRR59 in rice,which function as transcriptional repressors to negatively regulate the rhythmic expression of OsMGT3 encoding a chloroplast-localized Mg2+***3-dependent rhythmic Mg fluctuations modulate carbon fixation and consequent sugar output in rice ***,sugar triggers the increase of superoxide,which may act as a feedback signal to positively regulate the expression of OsPRR95 and *** together,our results reveal a negative-feedback loop that strengthens the crosstalk between photosynthetic carbon fixation and the circadian clock,which may improve plan adaptation and performance in fluctuating environments.
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