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RALF peptide signaling controls the polytubey block in Arabidopsis

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



Abstract

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 ...

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