Genome expansion and gene loss in powdery mildew fungi reveal tradeoffs in extreme parasitism

Pietro D. Spanu, James C. Abbott, Joelle Amselem, Timothy A. Burgis, Darren M. Soanes, Kurt Stüber, Emiel Ver Loren van Themaat, James K.M. Brown , Sarah A. Butcher, Sarah J. Gurr, Marc-Henri Lebrun, Christopher J. Ridout, Paul Schulze-Lefert, Nicholas J. Talbot, Nahal Ahmadinejad, Christian Ametz, Geraint R. Barton, Mariam Benjdia, Przemyslaw Bidzinski, Laurence V. BindschedlerMaike Both, Marin T. Brewer, Lance Cadle-Davidson, Molly M. Cadle-Davidson, Jerome Collemare, Rainer Cramer, Omer Frenkel, Dale Godfrey, James Harriman, Claire Hoede, Brian C. King, Sven Klages, Jochen Kleemann, Daniela Knoll, Prasanna S. Koti, Jonathan Kreplak, Francisco J. López-Ruiz, Xunli Lu, Takaki Maekawa, Siraprapa Mahanil, Cristina Micali, Michael G. Milgroom, Giovanni Montana, Sandra Noir, Richard J. O'Connell, Simone Oberhaensli, Francis Parlange, Carsten Pedersen, Hadi Quesneville, Richard Reinhardt, Matthias Rott, Soledad Sacristán, Sarah M. Schmidt, Moritz Schön, Pari Skamnioti, Hans Sommer, Amber Stephens, Hiroyuki Takahara, Hans Thordal-Christensen, Marielle Vigouroux, Ralf Weßling, Thomas Wicker, Ralph Panstruga

    505 Citationer (Scopus)

    Abstract

    Powdery mildews are phytopathogens whose growth and reproduction are entirely dependent on living plant cells. The molecular basis of this life-style, obligate biotrophy, remains unknown. We present the genome analysis of barley powdery mildew, Blumeria graminis f.sp. hordei (Blumeria), as well as a comparison with the analysis of two powdery mildews pathogenic on dicotyledonous plants. These genomes display massive retrotransposon proliferation, genome-size expansion, and gene losses. The missing genes encode enzymes of primary and secondary metabolism, carbohydrate-active enzymes, and transporters, probably reflecting their redundancy in an exclusively biotrophic life-style. Among the 248 candidate effectors of pathogenesis identified in the Blumeria genome, very few (less than 10) define a core set conserved in all three mildews, suggesting thatmost effectors represent species-specific adaptations.

    OriginalsprogEngelsk
    TidsskriftScience
    Vol/bind330
    Udgave nummer6010
    Sider (fra-til)1543-1546
    Antal sider4
    ISSN0036-8075
    DOI
    StatusUdgivet - 10 dec. 2010

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