« Previous Abstract"Evidence for maintenance of sex determinants but not of sexual stages in red yeasts, a group of early diverged basidiomycetes"    Next Abstract"Common HLA alleles associated with health, but not with facial attractiveness" »

Microbiol Spectr

Title:		Fungal Sex: The Basidiomycota
Author(s):		Coelho MA; Bakkeren G; Sun S; Hood ME; Giraud T;
Address:		"UCIBIO-REQUIMTE, Departamento de Ciencias da Vida, Faculdade de Ciencias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal. Agriculture and Agri-Food Canada, Summerland Research and Development Centre, Summerland, BC, V0H 1Z0, Canada. Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710. Department of Biology, Amherst College, Amherst, MA 01002. Ecologie Systematique Evolution, Univ. Paris-Sud, CNRS, AgroParisTech, Universite Paris-Saclay, 91400, Orsay, France"
Journal Title:		Microbiol Spectr
Year:		2017
Volume:		5
Issue:		3
Page Number:		-
DOI:		10.1128/microbiolspec.FUNK-0046-2016
ISSN/ISBN:		2165-0497 (Electronic) 2165-0497 (Linking)
Abstract:		"Fungi of the Basidiomycota, representing major pathogen lineages and mushroom-forming species, exhibit diverse means to achieve sexual reproduction, with particularly varied mechanisms to determine compatibilities of haploid mating partners. For species that require mating between distinct genotypes, discrimination is usually based on both the reciprocal exchange of diffusible mating pheromones, rather than sexes, and the interactions of homeodomain protein signals after cell fusion. Both compatibility factors must be heterozygous in the product of mating, and genetic linkage relationships of the mating pheromone/receptor and homeodomain genes largely determine the complex patterns of mating-type variation. Independent segregation of the two compatibility factors can create four haploid mating genotypes from meiosis, referred to as tetrapolarity. This condition is thought to be ancestral to the basidiomycetes. Alternatively, cosegregation by linkage of the two mating factors, or in some cases the absence of the pheromone-based discrimination, yields only two mating types from meiosis, referred to as bipolarity. Several species are now known to have large and highly rearranged chromosomal regions linked to mating-type genes. At the population level, polymorphism of the mating-type genes is an exceptional aspect of some basidiomycete fungi, where selection under outcrossing for rare, intercompatible allelic variants is thought to be responsible for numbers of mating types that may reach several thousand. Advances in genome sequencing and assembly are yielding new insights by comparative approaches among and within basidiomycete species, with the promise to resolve the evolutionary origins and dynamics of mating compatibility genetics in this major eukaryotic lineage"
Keywords:		"Alleles Basidiomycota/classification/*genetics/*physiology Cell Cycle/genetics/physiology Evolution, Molecular Fungal Proteins/genetics/physiology Fungi/*genetics/physiology Genes, Fungal/genetics/physiology Genes, Mating Type, Fungal/*genetics/*physiolog;"
Notes:		"MedlineCoelho, Marco A Bakkeren, Guus Sun, Sheng Hood, Michael E Giraud, Tatiana eng 309403/ERC_/European Research Council/International R15 GM119092/GM/NIGMS NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Review 2017/06/10 Microbiol Spectr. 2017 Jun; 5(3):10.1128/microbiolspec.FUNK-0046-2016. doi: 10.1128/microbiolspec.FUNK-0046-2016"