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Co-occurrence and hybridization of anther-smut pathogens specialized on Dianthus hosts.
Petit, Elsa; Silver, Casey; Cornille, Amandine; Gladieux, Pierre; Rosenthal, Lisa; Bruns, Emily; Yee, Sarah; Antonovics, Janis; Giraud, Tatiana; Hood, Michael E.
Afiliación
  • Petit E; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, USA.
  • Silver C; Biology Department, Amherst College, Amherst, MA, 01002, USA.
  • Cornille A; Center for Adaptation to a Changing Environment, ETH Zürich, 8092, Zürich, Switzerland.
  • Gladieux P; UMR BGPI, INRA, Campus International de Baillarguet, 34398, Montpellier, France.
  • Rosenthal L; Biology Department, Amherst College, Amherst, MA, 01002, USA.
  • Bruns E; Department of Biology, University of Virginia, Charlottesville, VA, 22903, USA.
  • Yee S; Biology Department, Amherst College, Amherst, MA, 01002, USA.
  • Antonovics J; Department of Biology, University of Virginia, Charlottesville, VA, 22903, USA.
  • Giraud T; Ecologie Systematique Evolution, CNRS, University of Paris-Sud, AgroParisTech, Université Paris-Saclay, 91400, Orsay, France.
  • Hood ME; Biology Department, Amherst College, Amherst, MA, 01002, USA.
Mol Ecol ; 26(7): 1877-1890, 2017 Apr.
Article en En | MEDLINE | ID: mdl-28231407
Host specialization has important consequences for the diversification and ecological interactions of obligate pathogens. The anther-smut disease of natural plant populations, caused by Microbotryum fungi, has been characterized by specialized host-pathogen interactions, which contribute in part to the isolation among these numerous fungal species. This study investigated the molecular variation of Microbotryum pathogens within the geographic and host-specific distributions on wild Dianthus species in southern European Alps. In contrast to prior studies on this pathogen genus, a range of overlapping host specificities was observed for four delineated Microbotryum lineages on Dianthus hosts, and their frequent co-occurrence within single-host populations was quantified at local and regional scales. In addition to potential consequences for direct pathogen competition, the sympatry of Microbotryum lineages led to hybridization between them in many populations, and these admixed genotypes suffered significant meiotic sterility. Therefore, this investigation of the anther-smut fungi reveals how variation in the degrees of host specificity can have major implications for ecological interactions and genetic integrity of differentiated pathogen lineages.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Basidiomycota / Dianthus / Hibridación Genética País/Región como asunto: Europa Idioma: En Revista: Mol Ecol Asunto de la revista: BIOLOGIA MOLECULAR / SAUDE AMBIENTAL Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Basidiomycota / Dianthus / Hibridación Genética País/Región como asunto: Europa Idioma: En Revista: Mol Ecol Asunto de la revista: BIOLOGIA MOLECULAR / SAUDE AMBIENTAL Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido