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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 | |
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). |
条目包含的文件 | 条目无相关文件。 |
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