数字农科院2.0

A Trim Insertion In The P.romoter Of Ms2 Causes M ale Sterility In Wheat

文献类型： 外文期刊

作者： 夏川; 张立超; 邹枨; 顾永强; 段佳磊; 赵光耀; 吴佳洁; 刘越; 方晓华; 高丽锋; 焦远年; 孙加强; 潘映红; 刘旭; 贾继增; 孔秀英

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期刊名称： NATURE COMMUNICATIONS

ISSN： 2041-1723

年卷期： 2017 年 8 卷

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收录情况： JCR（2021版）

摘要： The male-sterile ms2 mutant has been known for 40 years and has become extremely important in the commercial production of wheat. However, the gene responsible for this phenotype has remained unknown. Here we report the map-based cloning of the Ms2 gene. The Ms2 locus is remarkable in several ways that have implications in basic biology. Beyond having no functional annotation, barely detectable transcription in fertile wild-type wheat plants, and accumulated destructive mutations in Ms2 orthologs, the Ms2 allele in the ms2 mutant has acquired a terminal-repeat retrotransposon in miniature (TRIM) element in its promoter. This TRIM element is responsible for the anther-specific Ms2 activation that confers male sterility. The identification of Ms2 not only unravels the genetic basis of a historically important breeding trait, but also shows an example of how a TRIM element insertion near a gene can contribute to genetic novelty and phenotypic plasticity.

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