TDR INTERACTING PROTEIN 3, encoding a PHD-finger transcription factor, regulates Ubisch bodies and pollen wall formation in rice

文献类型： 外文期刊

第一作者： Yang, Zhengfu

作者： Yang, Zhengfu;Sun, Lianping;Zhang, Peipei;Zhang, Yingxin;Yu, Ping;Liu, Ling;Abbas, Adil;Xiang, Xiaojiao;Wu, Weixun;Zhan, Xiaodeng;Cao, Liyong;Cheng, Shihua;Yang, Zhengfu;Sun, Lianping;Zhang, Peipei;Zhang, Yingxin;Yu, Ping;Liu, Ling;Abbas, Adil;Xiang, Xiaojiao;Wu, Weixun;Zhan, Xiaodeng;Cao, Liyong;Cheng, Shihua;Yang, Zhengfu;Zhang, Peipei;Xiang, Xiaojiao

作者机构：

关键词： rice; male sterility; TIP3; PHD-finger; Ubisch bodies; pollen exine

期刊名称：PLANT JOURNAL （ 影响因子：6.417； 五年影响因子：7.627 ）

ISSN： 0960-7412

年卷期： 2019 年 99 卷 5 期

页码：

收录情况： SCI

摘要： Male reproductive development involves a complex series of biological events and precise transcriptional regulation is essential for this biological process in flowering plants. Several transcriptional factors have been reported to regulate tapetum and pollen development, however the transcriptional mechanism underlying Ubisch bodies and pollen wall formation remains less understood. Here, we characterized and isolated a male sterility mutant of TDR INTERACTING PROTEIN 3 (TIP3) in rice. The tip3 mutant displayed smaller and pale yellow anthers without mature pollen grains, abnormal Ubisch body morphology, no pollen wall formation, as well as delayed tapetum degeneration. Map-based cloning demonstrated that TIP3 encodes a conserved PHD-finger protein and further study confirmed that TIP3 functioned as a transcription factor with transcriptional activation activity. TIP3 is preferentially expressed in the tapetum and microspores during anther development. Moreover, TIP3 can physically interact with TDR, which is a key component of the transcriptional cascade in regulating tapetum development and pollen wall formation. Furthermore, disruption of TIP3 changed the expression of several genes involved in tapetum development and degradation, biosynthesis and transport of lipid monomers of sporopollenin in tip3 mutant. Taken together, our results revealed an unprecedented role for TIP3 in regulating Ubisch bodies and pollen exine formation, and presents a potential tool to manipulate male fertility for hybrid rice breeding.

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