遗传 ›› 2024, Vol. 46 ›› Issue (1): 3-17.doi: 10.16288/j.yczz.23-300

• 特邀综述 • 上一篇    下一篇

显花植物自交不亲和性的分子与演化机制

赵洪(), 薛勇彪()   

  1. 中国科学院遗传与发育生物学研究所,北京 100101
  • 收稿日期:2023-12-01 修回日期:2023-12-29 出版日期:2024-01-20 发布日期:2024-01-01
  • 通讯作者: 赵洪,薛勇彪 E-mail:zhhong@genetics.ac.cn;ybxue@genetics.ac.cn
  • 作者简介:薛勇彪研究员主要从事植物分子遗传学领域研究,在植物自交不亲和性、重要基因功能解析和基因组分析等领域做出了重要科学发现,发表SCI论文150余篇,2020~2022年获爱思唯尔生物学中国高被引学者,2007年获国家自然科学二等奖2项,分别为“显花植物自交不亲和性分子机理”和“水稻第四号染色体测序及功能分析”,曾任中国科学院遗传与发育生物学研究所和北京基因组研究所(国家生物信息中心)所长、第十届中国遗传学会理事长、水稻功能基因组973项目和中国科学院A类先导专项首席科学家,Journal of Genetics and Genomics (JGG)荣誉主编、Plant Reproduction、Plants People Planet (PPP)、Biology Open、H1(F1000)等杂志编委或顾问。
  • 基金资助:
    国家自然科学基金项目(32200273);国家自然科学基金项目(32030007)

Molecular and evolutionary mechanisms of self-incompatibility in angiosperms

Hong Zhao(), Yongbiao Xue()   

  1. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2023-12-01 Revised:2023-12-29 Published:2024-01-20 Online:2024-01-01
  • Contact: Hong Zhao,Yongbiao Xue E-mail:zhhong@genetics.ac.cn;ybxue@genetics.ac.cn
  • Supported by:
    National Natural Science Foundation of China(32200273);National Natural Science Foundation of China(32030007)

摘要:

自交不亲和性(self-incompatibility, SI)是雌雄同花植物广泛采取的一种种内促进异交机制,通常由一个多态且复等位的S位点控制。目前共发现6种不同分子机制的SI,包括由花柱S因子S-RNase和花粉S因子SLFs控制且常见于车前科、茄科、蔷薇科和芸香科的I类、SRKSCR控制的十字花科II类、PrsSPrpS控制的罂粟科III类、CYP-GLO2-KFB-CCM-PUM控制的报春花科IV类、TsSPH1-TsYUC6-TsBAHD控制的时钟花科V类及HPS10-SDUF247I-S控制的禾本科VI类SI,其中I类SI为异己识别体系,而II、III和VI类均为自己识别系统。此外,近年来对其起源和演化机制研究也取得显著进展。其中,I类SI起源于真双子叶植物的最近共同祖先,II~V类则为丢失I类后分别进化产生的新机制,而单子叶禾本科特有的VI类SI则可能是在丢失古老I类SI后演化出的新系统。本文主要总结已报道SI的分子和演化机制,以期为显花植物SI的理论研究和育种应用提供参考和帮助。

关键词: 显花植物, 自交不亲和性, 起源, 演化, 自交系, 杂交育种

Abstract:

As an intraspecific outcrossing mechanism, self-incompatibility (SI) widely adopted by hermaphroditic plants is usually controlled by a polymorphic multi-allelic S locus. Typically, six molecular types of SI have been found, including type-I controlled by the pistil S S-RNase and pollen S SLFs commonly spread in Plantaginaceae, Solanaceae, Rosaceae and Rutaceae, type-II by SRK and SCR in Brassicaceae, type-III by PrsS and PrpS in Papaveraceae, type-IV by CYP-GLO2-KFB-CCM-PUM in Primulaceae, type-V by TsSPH1-TsYUC6-TsBAHD in Turneraceae and type-VI by HPS10-S and DUF247I-S in Poaceae, with type-I characterized as a non-self recognition system but types-II, -III and -VI self ones. Furthermore, remarkable progresses have been made in their origin and evolutionary mechanisms recently. Among them, type-I SI possessed a single origin in the most recent common ancestor of eudicots and types II-V dynamically evolved following its losses, while type-VI SI exclusively existed in monocot Poaceae may be regained after the loss of the ancient type-I. Here, we mainly review the molecular and evolutionary mechanisms of angiosperm SI systems, thus providing a helpful reference for their theoretical research and breeding application.

Key words: angiosperms, self-incompatibility, origin, evolution, inbred lines, crossbreeding