A natural mutation in the promoter of Ms-cd1 causes dominant male sterility in Brassica oleracea

Fengqing Han, Kaiwen Yuan, Wenru Sun, Xiaoli Zhang, Xing Liu, Xinyu Zhao, Limei Yang, Yong Wang, Jialei Ji, Yumei Liu, Zhansheng Li, Jinzhe Zhang, Chunzhi Zhang, Sanwen Huang, Yangyong Zhang (), Zhiyuan Fang () and Honghao Lv ()
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Fengqing Han: Chinese Academy of Agricultural Sciences
Kaiwen Yuan: Chinese Academy of Agricultural Sciences
Wenru Sun: Chinese Academy of Agricultural Sciences
Xiaoli Zhang: Tianjin Academy of Agricultural Sciences
Xing Liu: Chinese Academy of Agricultural Sciences
Xinyu Zhao: Chinese Academy of Agricultural Sciences
Limei Yang: Chinese Academy of Agricultural Sciences
Yong Wang: Chinese Academy of Agricultural Sciences
Jialei Ji: Chinese Academy of Agricultural Sciences
Yumei Liu: Chinese Academy of Agricultural Sciences
Zhansheng Li: Chinese Academy of Agricultural Sciences
Jinzhe Zhang: Chinese Academy of Agricultural Sciences
Chunzhi Zhang: Chinese Academy of Agricultural Sciences
Sanwen Huang: Chinese Academy of Agricultural Sciences
Yangyong Zhang: Chinese Academy of Agricultural Sciences
Zhiyuan Fang: Chinese Academy of Agricultural Sciences
Honghao Lv: Chinese Academy of Agricultural Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-15

Abstract: Abstract Male sterility has been used for crop hybrid breeding for a long time. It has contributed greatly to crop yield increase. However, the genetic basis of male sterility has not been fully elucidated. Here, we report map-based cloning of the cabbage (Brassica oleracea) dominant male-sterile gene Ms-cd1 and reveal that it encodes a PHD-finger motif transcription factor. A natural allele Ms-cd1PΔ−597, resulting from a 1-bp deletion in the promoter, confers dominant genic male sterility (DGMS), whereas loss-of-function ms-cd1 mutant shows recessive male sterility. We also show that the ethylene response factor BoERF1L represses the expression of Ms-cd1 by directly binding to its promoter; however, the 1-bp deletion in Ms-cd1PΔ−597 affects the binding. Furthermore, ectopic expression of Ms-cd1PΔ−597 confers DGMS in both dicotyledonous and monocotyledonous plant species. We thus propose that the DGMS system could be useful for breeding hybrids of multiple crop species.

Date: 2023
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DOI: 10.1038/s41467-023-41916-0

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