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Zhong, Sheng; Li, Ling; Wang, Zhijuan; Ge, Zengxiang; Li, Qiyun; Bleckmann, Andrea; Wang, Jizong; Song, Zihan; Shi, Yihao; Liu, Tianxu; Li, Luhan; Zhou, Huabin; Wang, Yanyan; Zhang, Li; Wu, Hen-Ming; Lai, Luhua; Gu, Hongya; Dong, Juan; Cheung, Alice Y; Dresselhaus, Thomas; Qu, Li-Jia
Science, 01/2022, Letnik: 375, Številka: 6578Journal Article
Fertilization of an egg by multiple sperm (polyspermy) leads to lethal genome imbalance and chromosome segregation defects. In , 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 are coordinated by the same signaling components to guarantee and optimize reproductive success.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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