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    Genomic tillage and the harvest of fungal phytopathogens

    Access Status
    Open access via publisher
    Authors
    Oliver, Richard
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Oliver, R. 2012. Genomic tillage and the harvest of fungal phytopathogens. New Phytologist. 196 (4): pp. 1015-1023.
    Source Title
    New Phytologist
    DOI
    10.1111/j.1469-8137.2012.04330.x
    ISSN
    0028646X
    School
    Department of Environment and Agriculture
    URI
    http://hdl.handle.net/20.500.11937/44084
    Collection
    • Curtin Research Publications
    Abstract

    Genome sequencing has been carried out on a small selection of major fungal ascomycete pathogens. These studies show that simple models whereby pathogens evolved from phylogenetically related saprobes by the acquisition or modification of a small number of key genes cannot be sustained.The genomes show that pathogens cannot be divided into three clearly delineated classes (biotrophs, hemibiotrophs and necrotrophs) but rather into a complex matrix of categories each with subtly different properties. It is clear that the evolution of pathogenicity is ancient, rapid and ongoing. Fungal pathogens have undergone substantial genomic rearrangements that can be appropriately described as ‘genomic tillage’. Genomic tillage underpins the evolution and expression of large families of genes – known as effectors – that manipulate and exploit metabolic and defence processes of plants so as to allow the proliferation of pathogens.

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