生物技术通报 ›› 2021, Vol. 37 ›› Issue (7): 35-44.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0514

• 综述与专论 • 上一篇    下一篇

植物寄生线虫对化感信号的识别及机制

李春杰, 王从丽()   

  1. 中国科学院东北地理与农业生态研究所 中国科学院大豆分子设计育种重点实验室,哈尔滨 150081
  • 收稿日期:2021-04-19 出版日期:2021-07-26 发布日期:2021-08-13
  • 作者简介:李春杰,女,博士,副研究员,研究方向:生物防治机理和应用;E-mail:lichunjie@iga.ac.cn
  • 基金资助:
    中国科学院战略性先导科技专项项目(XDA24010307);国家自然科学基金项目(31772139);国家自然科学基金项目(31471749)

Recognition Mechanism of Plant-parasitic Nematodes in Response to Semiochemicals

LI Chun-jie, WANG Cong-li()   

  1. Key Laboratory of Soybean Molecular Design Breeding,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081
  • Received:2021-04-19 Published:2021-07-26 Online:2021-08-13

摘要:

寄主根部及其根际微生物释放的化感信号物质是植物寄生线虫寻找、定位和侵染植物的重要线索。目前,寻找植物寄生线虫预侵染阶段的化感信号物质以及相关的分子靶标研究,以期开发植物源和线虫源杀线虫剂是线虫学家的国际研究热点和前沿。本文重点综述了植物寄生线虫对化感信号识别机制的国内外研究进展。首先定义了植物寄生线虫对化感信号的识别或者趋化性,列出了近些年所报道的主要化感信号物质;对经济上最重要的两种植物寄生线虫(根结线虫和大豆孢囊线虫)的趋化性进行了比较;再进一步以模式秀丽隐杆线虫的化感功能为基础,论述了植物寄生线虫趋化性的分子调控研究进展;讨论了植物寄生线虫化感信号转导的潜在机制及其研究意义和难度;最后,对植物寄生线虫化感信号识别机制的重要研究方向及前景进行总结和展望。

关键词: 植物寄生线虫, 化感信号, 根结线虫, 大豆孢囊线虫, 分子调控

Abstract:

Semiochemicals secreted by the host root and rhizosphere microorganisms are important cues for host seeking,host location and infection of plant-parasitic nematodes(PPN). Currently,exploring semiochemicals and the associated molecular targets during the pre-parasitic stage of plant-parasitic nematodes to develop plant- or nematode- derived nematicides is an international research hotspot and frontier for nematologists. The focus of this review is on the international and national research progress of PPN on recognition mechanism of semiochemical signals. Firstly,PPN recognition or chemotaxis to semiochemical signals is defined and major semiochemical signal substances reported recently are listed. The chemotaxis is compared between the top two economically important nematodes(root-knot nematodes and soybean cyst nematode). Further,based on the chemosensory function of Caenorhabditis elegans,the molecular regulation of PPN chemotaxis is stated,as well as the potentially molecular transduction mechanism of PPN chemosensory,and its research significance and difficulty are discussed. Finally,the future important research directions of PPN signal recognition mechanism are prospected.

Key words: plant-parasitic nematodes, semiochemicals, root-knot nematodes, soybean cyst nematodes, molecular regulation