FERONIA is involved in phototropin 1-mediated blue light phototropic growth in Arabidopsis
文献类型： 外文期刊
作者： Li, Chiyu 1 ; Chen, Jia 2 ; Li, Xiaoyan 2 ; Zhang, Xin 2 ; Liu, Ying 2 ; Zhu, Sirui 2 ; Wang, Long 2 ; Zheng, Heping 2 ; Luan, Sheng 4 ; Li, Jiada 1 ; Yu, Feng 2 ;
作者机构： 1.Cent South Univ, Sch Life Sci, Changsha 410078, Peoples R China
2.Hunan Univ, Coll Biol, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
3.Hunan Univ, Hunan Key Lab Plant Funct Genom & Dev Regulat, Changsha 410082, Hunan, Peoples R China
4.Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA
5.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China
关键词： blue light; FERONIA; H+ and auxin gradience formation; hypocotyl; phototropin 1; phototropism
期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：9.106； 五年影响因子：8.241 ）
ISSN： 1672-9072
年卷期： 2022 年 64 卷 10 期
页码：
收录情况： SCI
摘要： Plant shoot phototropism is triggered by the formation of a light-driven auxin gradient leading to bending growth. The blue light receptor phototropin 1 (phot1) senses light direction, but how this leads to auxin gradient formation and growth regulation remains poorly understood. Previous studies have suggested phot1's role for regulated apoplastic acidification, but its relation to phototropin and hypocotyl phototropism is unclear. Herein, we show that blue light can cause phot1 to interact with and phosphorylate FERONIA (FER), a known cell growth regulator, and trigger downstream phototropic bending growth in Arabidopsis hypocotyls. fer mutants showed defects in phototropic growth, similar to phot1/2 mutant. FER also interacts with and phosphorylates phytochrome kinase substrates, the phot1 downstream substrates. The phot1-FER pathway acts upstream of apoplastic acidification and the auxin gradient formation in hypocotyl under lateral blue light, both of which are critical for phototropic bending growth in hypocotyls. Our study highlights a pivotal role of FER in the phot1-mediated phototropic cell growth regulation in plants.
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