文献类型： 外文期刊

作者： You, Shimin ¹ ; Zhao, Zhigang ¹ ; Yu, Xiaowen ¹ ; Zhu, Shanshan ² ; Wang, Jian ² ; Lei, Dekun ¹ ; Zhou, Jiawu ³ ; Li, Jing ³ ; Chen, Haiyuan ¹ ; Xiao, Yanjia ¹ ; Chen, Weiwei ² ; Wang, Qiming ¹ ; Lu, Jiayu ¹ ; Chen, Keyi ¹ ; Zhou, Chunlei ¹ ; Zhang, Xin ² ; Cheng, Zhijun ² ; Guo, Xiuping ² ; Ren, Yulong ² ; Zheng, Xiaoming ² ; Liu, Shijia ¹ ; Liu, Xi ¹ ; Tian, Yunlu ¹ ; Jiang, Ling ¹ ; Tao, Dayun ³ ; Wu, Chuanyin ² ; Wan, Jianmin ¹ ;

作者机构： 1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement &, Cytogenet Inst, Zhongshan Biol Breeding Lab, Nanjing 210095, Peoples R China

2.Chinese Acad Agr Sci CAAS, Inst Crop Sci, State Key Lab Crop Gene Resources & Breeding, Beijing 100081, Peoples R China

3.Yunnan Acad Agr Sci YAAS, Food Crops Res Inst, Yunnan Seed Lab, Yunnan Key Lab Rice Genet Improvement, Kunming 650200, Peoples R China

期刊名称：NATURE COMMUNICATIONS （ 影响因子：16.6； 五年影响因子：17.0 ）

ISSN：

年卷期： 2023 年 14 卷 1 期

页码：

收录情况： SCI

摘要： Breakdown of reproductive isolation facilitates flow of useful trait genes into crop plants from their wild relatives. Hybrid sterility, a major form of reproductive isolation exists between cultivated rice (Oryza sativa) and wild rice (O. meridionalis, Mer). Here, we report the cloning of qHMS1, a quantitative trait locus controlling hybrid male sterility between these two species. Like qHMS7, another locus we cloned previously, qHMS1 encodes a toxin-antidote system, but differs in the encoded proteins, their evolutionary origin, and action time point during pollen development. In plants heterozygous at qHMS1, similar to 50% of pollens carrying qHMS1-D (an allele from cultivated rice) are selectively killed. In plants heterozygous at both qHMS1 and qHMS7, similar to 75% pollens without co-presence of qHMS1-Mer and qHMS7-D are selectively killed, indicating that the antidotes function in a toxin-dependent manner. Our results indicate that different toxin-antidote systems provide stacked reproductive isolation for maintaining species identity and shed light on breakdown of hybrid male sterility.