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Hereditas(Beijing) ›› 2019, Vol. 41 ›› Issue (8): 703-715.doi: 10.16288/j.yczz.19-162

• Review • Previous Articles     Next Articles

Current advance on molecular genetic regulation of rice fertility

Yongyao Xie1,Jintao Tang1,Bowen Yang1,Jun Hu2,Yao-Guang Liu1,Letian Chen1()   

  1. 1. State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
    2. State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan 430072, China
  • Received:2019-06-05 Revised:2019-06-18 Online:2019-08-20 Published:2019-07-24
  • Contact: Chen Letian E-mail:lotichen@scau.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(31701499);The Key Research Program of Guangzhou Science Technology and Innovation Commission(201707020016);The China Postdoctoral Science Foundation(2018M630955);The State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources(SKLCUSA-b201717)

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Abstract:

Hybrid rice has contributed greatly to global food security. Cytoplasmic male sterility (CMS) and photo/ thermo sensitive genic male sterility (P/TGMS) are genetic bases for three-line and two-line hybrid rice production, respectively. In contrast, (sub-) specific hybrid sterility (HS) is a major barrier for utilization of hybrid vigor of distant hybrid rice. Therefore, understanding the molecular regulatory mechanism of rice fertility is a key technical issue for hybrid rice industry, and a long-standing basic scientific issue for nuclear-cytoplasmic interaction and reproductive isolation. Chinese geneticists of plant sciences have made tremendous contributions on the molecular genetic basis of rice fertility related to hybrid rice production. Here, we review the development of hybrid rice production systems in China and summarize current advance on genetic basis and molecular mechanism of CMS, P/TGMS, and HS involved in hybrid rice. We also discuss problems of hybrid rice production in China and point out new direction for future utilization of heterosis in rice.

Key words: hybrid rice, cytoplasmic male sterility, hybrid sterility, photo/thermo sensitive genic male sterility, fertility restoration