RALF 肽信号控制拟南芥中的多管区块

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2022-01-20 DOI:10.1126/science.abl4683

Sheng Zhong, Ling Li, Zhijuan Wang, Zengxiang Ge, Qiyun Li, Andrea Bleckmann, Jizong Wang, Zihan Song, Yihao Shi, Tianxu Liu, Luhan Li, Huabin Zhou, Yanyan Wang, Li Zhang, Hen-Ming Wu, Luhua Lai, Hongya Gu, Juan Dong, Alice Y. Cheung, Thomas Dresselhaus, Li-Jia Qu

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引用次数: 37

摘要

一个卵子由多个精子受精（多精子受精）会导致致命的基因组失衡和染色体分离缺陷。在拟南芥（Arabidopsis thaliana）中，阻止多精受精的机制是防止多管受精（多个花粉管到达一个胚珠）。我们在此表明，位于隔膜的 FERONIA、ANJEA 和 HERCULES RECEPTOR KINASE 1 受体样激酶与花粉管特异性 RALF6、7、16、36 和 37 肽配体相互作用，建立了多管阻滞。RALF（快速碱化因子）肽和受体复合物的相同组合控制着目标胚珠内花粉管的接收和破裂。花粉管破裂会释放隔膜上的多管区块，从而在受精失败后产生次级花粉管。因此，拟南芥受精过程中的协调步骤是由相同的信号元件协调的，以保证和优化生殖成功。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

RALF peptide signaling controls the polytubey block in Arabidopsis

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RALF peptide signaling controls the polytubey block in Arabidopsis

Fertilization of an egg by multiple sperm (polyspermy) leads to lethal genome imbalance and chromosome segregation defects. In Arabidopsis thaliana, the block to polyspermy is facilitated by a mechanism that prevents polytubey (the arrival of multiple pollen tubes to one ovule). We show here that FERONIA, ANJEA, and HERCULES RECEPTOR KINASE 1 receptor-like kinases located at the septum interact with pollen tube–specific RALF6, 7, 16, 36, and 37 peptide ligands to establish this polytubey block. The same combination of RALF (rapid alkalinization factor) peptides and receptor complexes controls pollen tube reception and rupture inside the targeted ovule. Pollen tube rupture releases the polytubey block at the septum, which allows the emergence of secondary pollen tubes upon fertilization failure. Thus, orchestrated steps in the fertilization process in Arabidopsis are coordinated by the same signaling components to guarantee and optimize reproductive success.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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