Programmed Cell Death in Stigmatic Papilla Cells Is Associated With Senescence-Induced Self-Incompatibility Breakdown in Chinese Cabbage and Radish

文献类型： 外文期刊

第一作者： Huang, Jiabao

作者： Huang, Jiabao;Su, Shiqi;Dai, Huamin;Duan, Qiaohong;Liu, Chen;Wang, Shufen;Wei, Xiaochun;Zhao, Yanyan;Wang, Zhiyong;Zhang, Xiaowei;Yuan, Yuxiang;Yu, Xiaolin;Zhang, Changwei;Li, Ying;Zeng, Weiqing;Wu, Hen-Ming;Cheung, Alice Y.

作者机构：

关键词： self-incompatibility; flower senescence; plant senescence; PCD; ethylene; Brassicaceae

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2020 年 11 卷

页码：

收录情况： SCI

摘要： Self-incompatibility (SI) is a genetic mechanism flowering plants adopted to reject self-pollen and promote outcrossing. In the Brassicaceae family plants, the stigma tissue plays a key role in self-pollen recognition and rejection. We reported earlier in Chinese cabbage (Brassica rapa) that stigma tissue showed upregulated ethylene responses and programmed cell death (PCD) upon compatible pollination, but not in SI responses. Here, we show that SI is significantly compromised or completely lost in senescent flowers and young flowers of senescent plants. Senescence upregulates senescence-associated genes in B. rapa. Suppressing their expression in young stigmas by antisense oligodeoxyribonucleotide abolishes compatible pollination-triggered PCD and inhibits the growth of compatible pollen tubes. Furthermore, ethylene biosynthesis genes and response genes are upregulated in senescent stigmas, and increasing the level of ethylene or inhibiting its response increases or decreases the expression of senescence-associated genes, respectively. Our results show that senescence causes PCD in stigmatic papilla cells and is associated with the breakdown of SI in Chinese cabbage and in radish.

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[1]Programmed Cell Death in Stigmatic Papilla Cells Is Associated With Senescence-Induced Self-Incompatibility Breakdown in Chinese Cabbage and Radish. Huang, Jiabao,Su, Shiqi,Dai, Huamin,Duan, Qiaohong,Liu, Chen,Wang, Shufen,Wei, Xiaochun,Zhao, Yanyan,Wang, Zhiyong,Zhang, Xiaowei,Yuan, Yuxiang,Yu, Xiaolin,Zhang, Changwei,Li, Ying,Zeng, Weiqing,Wu, Hen-Ming,Cheung, Alice Y.. 2020

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