您好,欢迎访问湖南省农业科学院 机构知识库!

Molecular regulation of ZmMs7 required for maize male fertility and development of a dominant male-sterility system in multiple species

文献类型: 外文期刊

作者: An, Xueli 1 ; Ba, Biao 1 ; Duan, Meijuan 3 ; Dong, Zhenying 1 ; Liu, Ruogu 1 ; Yuan, Dingyang 4 ; Hou, Quancan 1 ; Wu, Su 1 ;

作者机构: 1.Univ Sci & Technol Beijing, Biol & Agr Res Ctr, Zhongzhi Int Inst Agr Biosci, Beijing 100024, Peoples R China

2.Beijing Solidwill Sci Tech Co Ltd, Beijing Engn Lab Main Crop Biotech Breeding, Beijing Int Sci & Technol Cooperat Base Biotech B, Beijing 100192, Peoples R China

3.Hunan Agr Univ, Coll Agron, Changsha 410128, Peoples R China

4.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China

关键词: ZmMs7; PHD finger; protein-protein interaction; dominant male-sterility system

期刊名称:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA ( 影响因子:11.205; 五年影响因子:12.291 )

ISSN: 0027-8424

年卷期: 2020 年 117 卷 38 期

页码:

收录情况: SCI

摘要: Understanding the molecular basis of male sterility and developing practical male-sterility systems are essential for heterosis utilization and commercial hybrid seed production in crops. Here, we report molecular regulation by genic male-sterility gene maize male sterility 7 (ZmMs7) and its application for developing a dominant male-sterility system in multiple species. ZmMs7 is specifically expressed in maize anthers, encodes a plant homeodomain (PHD) finger protein that functions as a transcriptional activator, and plays a key role in tapetal development and pollen exine formation. ZmMs7 can interact with maize nuclear factor Y (NF-Y) subunits to form ZmMs7-NF-YA6-YB2-YC9/12/15 protein complexes that activate target genes by directly binding to CCAAT box in their promoter regions. Premature expression of ZmMs7 in maize by an anther-specific promoter p5126 results in dominant and complete male sterility but normal vegetative growth and female fertility. Early expression of ZmMs7 downstream genes induced by prematurely expressed ZmMs7 leads to abnormal tapetal development and pollen exine formation in p5126-ZmMs7 maize lines. The p5126-ZmMs7 transgenic rice and Arabidopsis plants display similar dominant male sterility. Meanwhile, the mCherry gene coupled with p5126-ZmMs7 facilitates the sorting of dominant sterility seeds based on fluorescent selection. In addition, both the ms7-6007 recessive male-sterility line and p5126-ZmMs7M dominant male-sterility line are highly stable under different genetic germplasms and thus applicable for hybrid maize breeding. Together, our work provides insight into the mechanisms of anther and pollen development and a promising technology for hybrid seed production in crops.

  • 相关文献
作者其他论文 更多>>