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    Genomic and Comparative Analysis of the Class Dothideomycetes

    Access Status
    Fulltext not available
    Authors
    Hane, James
    Williams, A.
    Oliver, Richard
    Date
    2011
    Type
    Book Chapter
    
    Metadata
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    Citation
    Hane, J. and Williams, A. and Oliver, R. 2011. Genomic and Comparative Analysis of the Class Dothideomycetes. In Evolution of Fungi and Fungal-Like Organisms, 205-229. Berlin: Springer.
    Source Title
    Evolution of Fungi and Fungal-Like Organisms
    DOI
    10.1007/978-3-642-19974-5_9
    ISBN
    978-3-642-19974-5
    School
    Department of Environment and Agriculture
    URI
    http://hdl.handle.net/20.500.11937/9391
    Collection
    • Curtin Research Publications
    Abstract

    The class Dothideomycetes (Schoch et al. 2009) is a recently defined taxon within the phylum Ascomycota, with approximately 20,000 member species. Many species are important phytopathogens employing diverse pathogenicity strategies. This review compares the currently available genome sequences, including their mitochondrial sequences. The genomes of Dothideomycetes exhibit remarkable plasticity, characterised by extensive rearrangement of gene order and orientation. Dothideomycetes also display the ability to take advantage of repeat induced point mutation (RIP), a fungal specific mechanism to protect their genomes against transposon invasion. RIP also affects areas of the genome adjacent to transposon insertion sites conferring the adaptive advantage of rapid generation of diversity in fungal pathogenicity effector genes. In addition, Dothideomycetes have the propensity for lateral gene transfer which can involve the transmission of pathogenicity effectors. The combination of these mechanisms has led to the ascendance of many Dothideomycetes as the dominant fungal pathogens of their cultivated host plant species.

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