Abrin inactivating mitochondrial ribosome induced anther abortion in cotton CMS line LD6A by damaging mitochondrial membrane structure

文献类型： 外文期刊

第一作者： Zheng, Jie

作者： Zheng, Jie;Umer, Muhammad Jawad;Liu, Fang;Zheng, Jie;Khan, Aziz;Zhou, Bujin;Zhou, Qiong;Kong, Xiangjun;Liu, Yiding;Zhou, Ruiyang;Zheng, Jie;Zheng, Jie;Zhou, Bujin;Ullah, Najeeb

作者机构：

关键词： Upland Cotton; CMS; Proteomic; ROS; Mitochondrial ribosome

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.9； 五年影响因子：6.0 ）

ISSN： 0926-6690

年卷期： 2023 年 194 卷

页码：

收录情况： SCI

摘要： Cytoplasmic male sterile (CMS) system has extensively been exploited for hybrid vigor in plant breeding pro-grams. However, its application in many crops is limited due to poor understanding of molecular mechanism of fertility restoration. Using advanced analytical approaches, we aimed to elucidate the molecular pathways, regulating CMS induction and fertility restoration in cotton. Reproductive structures of a novel CMS (LD6A) and its maintainer (LD6B) lines were analyzed for physiological and proteomic changes during the development process. Transmission electron micrographs of anther tapetum showed a relatively indistinct inner ridge of CMS than of LD6B mitochondria at tetrad stage. Furthermore, at pollen mother cell and tetrad stages, CMS anthers accumulated a significantly higher reactive oxygen species than the maintainer line. At the protein level, CMS anthers induced significantly higher Abrin (XP_016705148.2), lower tricarboxylic acid cycle enzyme (malate dehydrogenase, malic enzyme, isocitrate dehydrogenase), and histone acetyltransferase expression than its maintainer line. Suggesting that abnormal sequence of mitochondrial ribosome gene rps4 and rpl10 and high expression of ribosome-inactivating protein Abrin in CMS line damaged mitochondrial membrane. This inhibited energy supply from the non-degraded tapetum, and consequently induced pollen sterility in LD6A. These data provide new insights into CMS mechanism in cotton crops that can be used for developing new CMS germplasm resources.

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