Chinese Bulletin of Botany ›› 2024, Vol. 59 ›› Issue (2): 278-290.DOI: 10.11983/CBB23088

• SPECIAL TOPICS • Previous Articles     Next Articles

Research Progress on Plant Sex-determination Genes and Their Epigenetic Regulation

Lansha Luo1, Wenpei Song1, Qingzhu Hua1, Dawei Li2, Hong Liang1, Xianzhi Zhang1,*()   

  1. 1College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
    2Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
  • Received:2023-07-03 Accepted:2023-12-19 Online:2024-03-01 Published:2023-12-21
  • Contact: * E-mail: zhangxianzhi@zhku.edu.cn

Abstract: The mechanism of sex determination in dioecious plants is a hot topic in reproductive biology, evolution and ecology, and so on. During recent years, the sex determination genes of several important crops, such as asparagus, kiwifruit, and poplar, have been revealed and applied to produce sex-specific products. New germplasms with bisexual flowers have also been developed for molecular breeding. In this review, the genetic bases of sex determination were systematically analyzed from the aspects of sex chromosomes and sex-determination genes in dioecious plants. Subsequently, the epigenetic regulatory roles of non-coding RNA and DNA methylation in plant sex determination were discussed. Finally, it was suggested that further comparative studies of sex determination genes among different dioecious plants should be carried out. More efforts are also needed to pay on the epigenetic regulations of plant sex determination. This work will not only facilitate to understand the molecular mechanisms of sex determination in dioecious plants, but also help to expand the application values of sex determination studies.

Key words: dioecious plants, sex chromosome, sex-determination genes, non-coding RNA, DNA methylation