Cell Biology and Plant Biochemistry, University of Regensburg, 93053 Regensburg, Germany.
State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, College of Life Sciences, Peking University, Beijing 100871, China.
Trends Plant Sci. 2021 Oct;26(10):993-995. doi: 10.1016/j.tplants.2021.06.013. Epub 2021 Jul 7.
Accurate communication at the stigma surface is required to promote plants' own pollen and reject foreign pollen. Liu et al. have now discovered an autocrine signaling pathway at the surface of arabidopsis stigmatic papillae, accumulating ROS. Downregulation of ROS production via an antagonistic peptide from the pollen coat promotes pollen hydration and germination.
准确的信号交流是柱头实现识别自身花粉和拒绝异源花粉功能所必需的。刘等人发现拟南芥柱头乳突表面存在一个ROS 积累的自分泌信号通路。来自花粉外壁的拮抗肽下调 ROS 的产生，促进花粉水合和萌发。
