Sex in the cold: taxonomic reorganization of psychrotolerant yeasts in the order Leucosporidiales

Species of Leucosporidiales are a group of psychrotolerant yeasts with biotechnological potential. In the present work, we studied the phenotypic, genetic and sexual characteristics of three species of this genus (Leucosporidium scottii, Leucosporidiella creatinivora and Le. yakutica) to clarify the...

Full description

Saved in:
Bibliographic Details
Published in:FEMS yeast research 2015-06, Vol.15 (4), p.fov019-fov019
Main Authors: de García, Virginia, Coelho, Marco A., Maia, Teresa M., Rosa, Luiz H., Vaz, Aline Martins, Rosa, Carlos A., Sampaio, José Paulo, Gonçalves, Paula, van Broock, María, Libkind, Diego
Format: Article
Language:English
Subjects:
Basidiomycota - classification
Basidiomycota - genetics
Basidiomycota - physiology
Cluster Analysis
Cold Temperature
Crosses, Genetic
DNA, Fungal - chemistry
DNA, Fungal - genetics
DNA, Ribosomal - chemistry
DNA, Ribosomal - genetics
DNA, Ribosomal Spacer - chemistry
DNA, Ribosomal Spacer - genetics
Genes, rRNA
Leucosporidiales
Molecular Sequence Data
New combinations
New genera
Phylogeny
RNA, Fungal - genetics
RNA, Ribosomal - genetics
Sequence Analysis, DNA
Speciation
Species
Taxonomic revision
Taxonomy
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Species of Leucosporidiales are a group of psychrotolerant yeasts with biotechnological potential. In the present work, we studied the phenotypic, genetic and sexual characteristics of three species of this genus (Leucosporidium scottii, Leucosporidiella creatinivora and Le. yakutica) to clarify the evolutionary relationship among these closely related taxa. From the results obtained, it becomes clear that these yeasts can interbreed. Although genetic delimitation is possible for the three species, the extent of nucleotide substitutions and phenotypic differences observed between them are lower than that expected for species that have ended the speciation process. Our taxonomic conclusion is to maintain the three taxa until further genomic data are gathered. However, the concept of L. scottii species complex is proposed for this group of species. Finally, we transfer all Leucosporidiella and Mastigobasidium species to Leucosporidium (Leucosporidiales), and, in order to end the polyphyly condition of these taxa, we propose the new genus Pseudoleucosporidium gen. nov. and the new combination Peudoleucosporidium fasciculatum comb. nov. Studies on different characteristics (from genetic to sexual behavior) of cold-adapted yeasts species, in order to clarify the evolutionary relationship.
ISSN:1567-1356
1567-1364
DOI:10.1093/femsyr/fov019