Parasitism genes and host range disparities in biotrophic nematodes: the conundrum of polyphagy versus specialisation

Vivian C. Blok, John T. Jones, Mark S. Phillips, David Trudgill

    Research output: Contribution to journalArticlepeer-review

    43 Citations (Scopus)

    Abstract

    This essay considers biotrophic cyst and root-knot nematodes in relation to their biology, host-parasite interactions and molecular genetics. These nematodes have to face the biological consequences of the physical constraints imposed by the soil environment in which they live while their hosts inhabit both above and below ground environments. The two groups of nematodes appear to have adopted radically different solutions to these problems with the result that one group is a host specialist and reproduces sexually while the other has an enormous host range and reproduces by mitotic parthenogenesis. We consider what is known about the modes of parasitism used by these nematodes and how it relates to their host range, including the surprising finding that parasitism genes in both nematode groups have been recruited from bacteria. The nuclear and mitochondrial genomes of these two nematode groups are very different and we consider how these findings relate to the biology of the organisms.
    Original languageEnglish
    Pages (from-to)249-59
    Number of pages11
    JournalBioEssays
    Volume30
    Issue number3
    DOIs
    Publication statusPublished - Mar 2008

    Keywords

    • Animals
    • Biological Evolution
    • Environment
    • Female
    • Helminths
    • Host-Parasite Interactions
    • Male
    • Models, Biological
    • Nematoda
    • Phylogeny
    • Soil
    • Symbiosis

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