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论文题目: Arabidopsis ANGUSTIFOLIA3 (AN3) Is Associated with the Promoter of CONSTITUTIVE PHOTOMORPHOGENIC1 (COP1) to Regulate Light-Mediated Stomatal Development
作者: Meng LS, Li C, Xu MK, Sun XD, Wan W, Cao XY, Zhang JL, Chen KM
联系作者: kunmingchen@nwsuaf.edu.cn
发表年度: 2018
DOI: doi: 10.1111/pce.13212
摘要:

Light signals are perceived by multiple photoreceptors that converge to suppress the RING E3 ubiquitin ligase CONSTITUTIVEPHOTOMORPHOGENIC1 (COP1) for the regulation of stomatal development. Thus, COP1 is a point of integration between light signaling and stomatal patterning. However, how light signaling is collected into COP1 for the production and spacing of stomata is still unknown. Here, we report that the loss-of-function mutant of ANGUSTIFOLIA3 (AN3) delays asymmetric cell division, which leads to decreased stomatal index. Furthermore, overexpression of AN3 accelerates asymmetric cell division, which results in clusters of stomata. In addition, the stomatal development through AN3 regulation is mediated by light signaling. Finally, we find that an3 is a light-signaling mutant, and that AN3 protein is light regulated. Self-activation by AN3 contributes to the control of AN3 expression. Thus, AN3 is a point of collection between light signaling and stomatal patterning. Target-gene analysis indicates that AN3 is associated with COP1 promoter for the regulation of light-controlling stomatal development. Together, these components for regulating stomataldevelopment form an AN3-COP1-E3 ubiquitin ligase complex, allowing the integration of light signaling into the production and spacing 

刊物名称: Plant, Cell & Environment
论文出处: https://onlinelibrary.wiley.com/doi/abs/10.1111/pce.13212
影响因子: 6.173(2016年)