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Abstract Detail


The dynamics of evolution in plant and fungal interactions - from communities to genomes

Hood, Michael [1], Petit, Elsa [1], Devier, Devier [2].

Fungal sex chromosomes, infection, and specialization by the anther-smut fungus, Microbotryum, on the Caryophyllaceae.

The sex chromosomes in the bipolar fungal pathogen Microbotryum represent a large genomic region of fixed heterozygosity. Reciprocal hybridization and backcrossing experiments reveals an important role for genes linked to mating type for infectiousness and host specificity. Moreover, this study includes genomic localization for a collection of genes recently shown to be under positive selection among species adapted to different hosts. Unique dynamics of sex chromosomes evolution in this pathogen are revealed by the capture of genes into the non-recombining regions linked to mating type.


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1 - Amherst College, Department of Biology, Mcguire Life Sciences Building, Amherst, Massachusetts, 01002, USA
2 - Université de Paris-Sud, Departement Genetique et Ecologie Evolutives

Keywords:
none specified

Presentation Type: Symposium or Colloquium Presentation
Session: SY2
Location: Ballroom 3/Cliff Lodge - Level B
Date: Monday, July 27th, 2009
Time: 10:30 AM
Number: SY2003
Abstract ID:642


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