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      Plant-nematode interactions: environmental signals detected by the nematode’s chemosensory organs control changes in the surface cuticle and behaviour

      Parasite

      EDP Sciences

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          Abstract

          Plant parasitic nematodes have developed the capacity to sense and respond to chemical signals of host origin and the ability to orientate towards plant roots enhances the nematode's chance of survival. Root exudates contain a range of compounds which mediate belowground interactions with pathogenic and beneficial soil organisms. Chemical components of root exudates may deter one organism while attracting another and these compounds alter nematode behaviour and can either attract nematodes to the roots or result in repellence, motility inhibition or even death. In vitro, plant signals present in root exudates, trigger a rapid alteration of the surface cuticle of Meloidogyne incognita and the same changes were also induced by indole-acetic acid (IAA). IAA binds to the chemosensory organs of M. incognito and it is possible that IAA acts as a signal that orientates the nematode on the root surface in the rhizosphere and/or inside the root tissue and thereby promotes nematode infection.

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          Author and article information

          Journal
          Parasite
          Parasite
          EDP Sciences
          1252-607X
          1776-1042
          September 2008
          September 2008
          : 15
          : 3
          : 310-316
          Article
          10.1051/parasite/2008153310
          18814700
          © 2008

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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          Self URI (journal page): http://www.parasite-journal.org/

          Parasitology, Life sciences

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