脱落酸
生物
光敏色素
水稻
细胞生物学
调节器
蒸腾作用
转录因子
拟南芥
植物
光合作用
基因
遗传学
红灯
突变体
作者
Qian Li,Luyan Zhou,Yanan Chen,Ning Xiao,Jianhua Zhang,Mengjiao Zhang,Wenguo Wang,Changquan Zhang,Anning Zhang,Hua Li,Jianmin Chen,Yong Gao
出处
期刊:The Plant Cell
[Oxford University Press]
日期:2022-08-05
卷期号:34 (11): 4293-4312
被引量:7
标识
DOI:10.1093/plcell/koac244
摘要
Abstract Stomata are crucial valves coordinating the fixation of carbon dioxide by photosynthesis and water loss through leaf transpiration. Phytochrome interacting factors (PIFs) are negative regulators of red light responses that belong to the basic helix–loop–helix family of transcription factors. Here, we show that the rice (Oryza sativa) PIF family gene OsPIL15 acts as a negative regulator of stomatal aperture to control transpiration in rice. OsPIL15 reduces stomatal aperture by activating rice ABSCISIC ACID INSENSITIVE 5 (OsABI5), which encodes a critical positive regulator of ABSCISIC ACID (ABA) signaling in rice. Moreover, OsPIL15 interacts with the NIGT1/HRS1/HHO family transcription factor rice HRS1 HOMOLOG 3 (OsHHO3) to possibly enhance the regulation of stomatal aperture. Notably, we discovered that the maize (Zea mays) PIF family genes ZmPIF1 and ZmPIF3, which are homologous to OsPIL15, are also involved in the regulation of stomatal aperture in maize, indicating that PIF-mediated regulation of stomatal aperture may be conserved in the plant lineage. Our findings explain the molecular mechanism by which PIFs play a role in red-light-mediated stomatal opening, and demonstrate that PIFs regulate stomatal aperture by coordinating the red light and ABA signaling pathways.
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