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Metschnikowia mating genomics.

Dong Kyung Lee1, Tom Hsiang2, Marc-André Lachance3

  • 1Department of Biology, University of Western Ontario, London, ON, N6A 5B7, Canada.

Antonie Van Leeuwenhoek
|April 14, 2018
PubMed
Summary
This summary is machine-generated.

Mating genes in Metschnikowia yeast reveal conserved mating locus organization across the Metschnikowiaceae family. Pheromone sequence variation correlates with phylogenetic distance and mating compatibility.

Keywords:
Mating pheromonesMating type locusMetschnikowiaMetschnikowiaceaeYeast

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Area of Science:

  • * Yeast genetics and molecular biology
  • * Evolutionary biology and phylogenetics
  • * Fungal reproductive biology

Background:

  • * Mating compatibility in haplontic, heterothallic yeast species is crucial for reproduction.
  • * Understanding mating type determination and recognition provides insights into speciation.
  • * The genus Metschnikowia and related species offer a model for studying yeast mating systems.

Purpose of the Study:

  • * To investigate genes involved in mating type determination and recognition in Metschnikowia and related species.
  • * To understand factors influencing mating compatibility patterns within this yeast genus.
  • * To confirm and delineate the evolutionary history of mating locus organization.

Main Methods:

  • * Comparative analysis of mating-related genes, including mating locus organization and pheromone sequences.
  • * Phylogenetic analysis to correlate genetic variation with evolutionary divergence.
  • * Examination of in vivo mating compatibility data in conjunction with sequence variation.

Main Results:

  • * Universality of a specific mating locus organization was confirmed across and exclusive to the Metschnikowiaceae family.
  • * Divergence of mating type idiomorphs coincided with the origin of the (CUG-ser) clade.
  • * The 'a' mating pheromone sequence is conserved in large-spored Metschnikowia species, while 'α' pheromone variation shows a correlation with phylogenetic distance and mating compatibility.

Conclusions:

  • * The mating locus organization in Metschnikowiaceae is evolutionarily conserved.
  • * Pheromone sequence evolution plays a role in shaping mating compatibility within Metschnikowia.
  • * This study clarifies the genetic basis of mating patterns and evolutionary relationships in Metschnikowia yeasts.