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Genetics DOI:10.1534/genetics.117.300573

Whole-Genome Analysis Illustrates Global Clonal Population Structure of the Ubiquitous Dermatophyte Pathogen.

Publication TypeJournal Article
Year of Publication2018
AuthorsPersinoti, GF, Martinez, DA, Li, W, Döğen, A, R Billmyre, B, Averette, A, Goldberg, JM, Shea, T, Young, S, Zeng, Q, Oliver, BG, Barton, R, Metin, B, Hilmioğlu-Polat, S, Ilkit, M, Gräser, Y, Martinez-Rossi, NM, White, TC, Heitman, J, Cuomo, CA
JournalGenetics
Volume208
Issue4
Pages1657-1669
Date Published2018 04
ISSN1943-2631
Abstract

Dermatophytes include fungal species that infect humans, as well as those that also infect other animals or only grow in the environment. The dermatophyte species is a frequent cause of skin infection in immunocompetent individuals. While members of the species complex have been further categorized based on various morphologies, their population structure and ability to undergo sexual reproduction are not well understood. In this study, we analyze a large set of and isolates to examine mating types, evidence of mating, and genetic variation. We find that nearly all isolates of are of a single mating type, and that incubation with "morphotype" isolates of the other mating type failed to induce sexual development. While the region around the mating type locus is characterized by a higher frequency of SNPs compared to other genomic regions, we find that the population is remarkably clonal, with highly conserved gene content, low levels of variation, and little evidence of recombination. These results support a model of recent transition to asexual growth when this species specialized to growth on human hosts.

DOI10.1534/genetics.117.300573
Pubmed

http://www.ncbi.nlm.nih.gov/pubmed/29467168?dopt=Abstract

Alternate JournalGenetics
PubMed ID29467168
PubMed Central IDPMC5887155
Grant ListU54 HG003067 / HG / NHGRI NIH HHS / United States