The main restorer Rf3 of maize S type cytoplasmic male sterility encodes a PPR protein that functions in reduction of the transcripts of orf355  

作　　者：Xiner Qin Shike Tian Wenliang Zhang Qi Zheng Hao Wang Yang Feng Yanan Lin Jihua Tang Yi Wang Jianbing Yan Mingqiu Dai Yonglian Zheng Bing Yue 

机构地区：[1]National Key Laboratory of Crop Genetic Improvement,Huazhong Agricultural University,Wuhan,China [2]National Key Laboratory of Wheat and Maize Crop Science,College of Agronomy,Henan Agricultural University,Zhengzhou,China [3]Industrial Crops Research Institution,Heilongjiang Academy of Land Reclamation of Sciences,Haerbin,China

出　　处：《Molecular Plant》2021年第12期1961-1964,共4页分子植物（英文版）

基　　金：supported in part by a project(No.2016YFD0100804)of the National Key Research and Development Program of China;a grant from the National Natural Science Foundation of China(31371635);a project(No.2662020SKPY011)of the Fundamental Research Funds for the Central Universities of China;the 111 Project of Crop Genomics and Molecular Breeding(B20051).

摘　　要：Dear Editor,Male sterile lines,especially cytoplasmic male sterile(CMS)lines,are extensively used in commercial hybrid seed production.Therefore a better understanding of the genetic basis of fertility restoration for CMS is important for the utility of heterosis in crops.In general,restorer of fertility(Rf)is controlled by one or two major genomic genes,and most of the Rf genes encode pro-teins containing P type pentatricopeptide repeat(PPR)motifs(Wang et al.,2006;Hu et al.,2012;Tang et al.,2014;Liu et al.,2016).S type CMS(CMS-S)is the main type of maize CMS with wide cytoplasmic sources,and orf355-orf77 in CMS-S was associated with male sterility(Zabala et al.,1997).The 5'stem-loop of the transcript of orf355-orf77 was thought to be associ-ated with its stability(Xiao et al.,2006).Recently,Xiao et al.(2020)confirmed that orf355 is the causal gene of CMS-S.Rf3,the main restorer of CMS-S,has been mapped to the long arm of chromosome 2 for a long time(Laughnan and Gabay,1978).Since then,great efforts have been made on genetic mapping and cloning of this gene(Xu et al.,2009).

关 键 词：STERILE FERTILITY fir 

分 类 号：S513[农业科学—作物学]