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Wheat Ms2 encodes for an orphan protein that confers male sterility in grass species

F. Ni,Juan Qi,Qunqun Hao,Bo Lyu,M. Luo,Yan Wang,Fengjuan Chen,Shuyun Wang,Chaozhong Zhang,L. Epstein,Xiangyu Zhao,Hong-gang Wang,Xian-sheng Zhang,Cuixia Chen,Lanzhen Sun,D. Fu

Published 2017 in Nature Communications

ABSTRACT

Male sterility is a valuable trait for plant breeding and hybrid seed production. The dominant male-sterile gene Ms2 in common wheat has facilitated the release of hundreds of breeding lines and cultivars in China. Here, we describe the map-based cloning of the Ms2 gene and show that Ms2 confers male sterility in wheat, barley and Brachypodium. MS2 appears as an orphan gene within the Triticinae and expression of Ms2 in anthers is associated with insertion of a retroelement into the promoter. The cloning of Ms2 has substantial potential to assemble practical pipelines for recurrent selection and hybrid seed production in wheat. The dominant male-sterile geneMs2 has facilitated the release of hundreds of wheat-breeding lines and cultivars in China. Here Ni et al. describe the cloning of the Ms2 gene, which appears as an orphan gene in the Triticinae, and show that Ms2 can be used to confer male sterility in wheat, barley and Brachypodium.

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