Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (7): 35-44.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0514

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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 Online:2021-07-26 Published:2021-08-13
  • Contact: WANG Cong-li E-mail:wangcongli@iga.ac.cn

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