Pollen PCP-B peptides unlock a stigma peptide–receptor kinase gating mechanism for pollination

doi:10.1126/science.abc6107

GSTDTAP > 气候变化

DOI	10.1126/science.abc6107
	Pollen PCP-B peptides unlock a stigma peptide–receptor kinase gating mechanism for pollination
	Chen Liu; Lianping Shen; Yu Xiao; David Vyshedsky; Chao Peng; Xiang Sun; Zhiwen Liu; Lijun Cheng; Hua Zhang; Zhifu Han; Jijie Chai; Hen-Ming Wu; Alice Y. Cheung; Chao Li
	2021-04-09
发表期刊	Science
出版年	2021
英文摘要	When a pollen grain lands on a receptive flower's pistil, a complex dance leading to sexual reproduction begins. Liu et al. show some of the early steps that help to distinguish a compatible pollen grain from a random piece of dust. Normally, a stigmatic gatekeeper, the ANJEA–FERONIA receptor kinase complex, perceives signaling peptides produced by the stigma that drive the production of reactive oxygen species at the stigma papillae. Upon pollination, POLLEN COAT PROTEIN B-class peptides compete with those stigmatic peptides for binding to the stigmatic receptor kinase complex. The subsequent decline of stigmatic reactive oxygen species production allows hydration and opens the gates to pollen germination. Science , this issue p. [171][1] Sexual reproduction in angiosperms relies on precise communications between the pollen and pistil. The molecular mechanisms underlying these communications remain elusive. We established that in Arabidopsis , a stigmatic gatekeeper, the ANJEA–FERONIA (ANJ–FER) receptor kinase complex, perceives the RAPID ALKALINIZATION FACTOR peptides RALF23 and RALF33 to induce reactive oxygen species (ROS) production in the stigma papillae, whereas pollination reduces stigmatic ROS, allowing pollen hydration. Upon pollination, the POLLEN COAT PROTEIN B-class peptides (PCP-Bs) compete with RALF23/33 for binding to the ANJ–FER complex, leading to a decline of stigmatic ROS that facilitates pollen hydration. Our results elucidate a molecular gating mechanism in which distinct peptide classes from pollen compete with stigma peptides for interaction with a stigmatic receptor kinase complex, allowing the pollen to hydrate and germinate. [1]: /lookup/doi/10.1126/science.abc6107
领域	气候变化 ; 资源环境
URL	查看原文
引用统计	被引频次：96[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/322094
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Chen Liu,Lianping Shen,Yu Xiao,等. Pollen PCP-B peptides unlock a stigma peptide–receptor kinase gating mechanism for pollination[J]. Science,2021.
APA	Chen Liu.,Lianping Shen.,Yu Xiao.,David Vyshedsky.,Chao Peng.,...&Chao Li.(2021).Pollen PCP-B peptides unlock a stigma peptide–receptor kinase gating mechanism for pollination.Science.
MLA	Chen Liu,et al."Pollen PCP-B peptides unlock a stigma peptide–receptor kinase gating mechanism for pollination".Science (2021).