拟南芥NPH3/RPT2-Like (NRL)家族蛋白在向光素信号转导通路中的作用研究进展

doi:10.11983/CBB19187

摘要/Abstract

摘要： 向光素PHOT1和PHOT2感受蓝光刺激后发生自磷酸化激活, 调节植物气孔开放、叶绿体运动、叶片伸展和定位以及向光性(包括根的负向光性和下胚轴的向光性)等多种适应性反应。拟南芥(Arabidopsis thaliana) NRL (NPH3/RPT2-Like)家族成员在向光素介导的信号途径中发挥重要作用, 其中NPH3特异调控下胚轴的向光性以及叶片的伸展与定位, RPT2参与调节植物向光性、叶片的伸展与定位以及叶绿体聚光反应等。NCH1是新发现的NRL家族成员, 与RPT2以功能冗余的方式调节叶绿体的聚光反应, 但不调节避光反应。该文主要综述了NRL蛋白家族成员在向光素介导蓝光信号通路中的作用, 并展望了未来的研究方向, 旨在为全面揭示NRL家族成员的功能提供线索。

关键词: 拟南芥, 蓝光, NPH3/RPT2-Like家族蛋白, 向光素

Abstract: Upon blue light-triggered autophosphorylation, the activated PHOT1 and PHOT2 photoreceptors function solely or redundantly to regulate diverse responses, such as stomatal opening, chloroplast movements, phototropism, and leaf positioning and flattening in Arabidopsis thaliana. Members of NPH3/RPT2-Like family (NRL) are necessary to elicit several photo-responses. NPH3 is required for phototropism, leaf expansion and positioning. RPT2 regulates chloroplast accumulation movement besides NPH3-mediated responses. NCH1 was recently identified as a Phot1-interacting protein that functions redundantly with RPT2 to mediate chloroplast accumulation movement, but not chloroplast avoidance movement. This article summarized the function of NRL family members in phototropin-mediated signaling and prospected further research, thus providing clues for fully revealing the function of the NRL family proteins.

Key words: Arabidopsis, blue light, NPH3/RPT2-Like family protein, phototropin

赵青平,马世凡,李芮茜,王田雨,赵翔. 拟南芥NPH3/RPT2-Like (NRL)家族蛋白在向光素信号转导通路中的作用研究进展. 植物学报, 2020, 55(2): 240-253.

Qingping Zhao,Shifan Ma,Ruixi Li,Tianyu Wang,Xiang Zhao. Advances of NPH3/RPT2-Like (NRL) Family Proteins in Phototropin-mediated Signaling in Arabidopsis thaliana. Chinese Bulletin of Botany, 2020, 55(2): 240-253.

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https://www.chinbullbotany.com/CN/Y2020/V55/I2/240

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