Zheng Zhang, Yu-Yi Guo, Yi-Chen Wang, Lei Zhou, Jing Fan, Yi-Chen Mao, Yan-Ming Yang, Yan-Fei Zhang, Xue-Hui Huang, Jun Zhu, Cheng Zhang, Zhong-Nan Yang
Thermosensitive genic female sterility (TGFS) is a promising property to be utilized for hybrid breeding. Here, we identified a rice TGFS line, tfs2, through an ethyl methyl sulfone (EMS) mutagenesis strategy. This line showed sterility under high temperature and became fertile under low temperature. Few seeds were produced when the tfs2 stigma was pollinated, indicating that tfs2 is female sterile. Gene cloning and genetic complementation showed that a point mutation from leucine to phenylalanine in HEI10 (HEI10tfs2 ), a crossover formation protein, caused the TGFS trait of tfs2...
January 3, 2024: Plant Journal