文献类型： 外文期刊

第一作者： Zhaogui Zhang;Baocai Zhang

作者： Zhaogui Zhang;Baocai Zhang;Zhibin Chen;Dongmei Zhang;Huairen Zhang;Hang Wang;Yu’e Zhang;Darun Cai;Juan Liu;Senlin Xiao;Yanqing Huo;Jie Liu;Lanjun Zhang;Mingming Wang;Xu Liu;Yongbiao Xue;Li Zhao;Yihua Zhou;Huabang Chen

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN： 2041-1723

年卷期： 2018 年 9 卷

页码：

收录情况： SCI

摘要： Unilateral cross-incompatibility (UCI) is a unidirectional inter/intra-population reproductive barrier when both parents are self-compatible. Maize Gametophyte factor1(Ga1) is an intraspecific UCI system and has been utilized in breeding. However, the mechanism underlying maize UCI specificity has remained mysterious for decades. Here, we report the cloning of ZmGa1P, a pollen-expressed PECTIN METHYLESTERASE (PME) gene at the Ga1locus that can confer the male function in the maize UCI system. Homozygous transgenic plants expressing ZmGa1P in a ga1 background can fertilize Ga1-S plants and can be fertilized by pollen of ga1 plants. ZmGa1P protein is predominantly localized to the apex of growing pollen tubes and may interact with another pollen-specific PME protein, ZmPME10-1, to maintain the state of pectin methylesterification required for pollen tube growth in Gal-S silks. Our study discloses a PME-mediated UCI mechanism and provides a tool to manipulate hybrid breeding.

分类号：