title: Farysizyma gen. nov., an anamorphic genus in the Ustilaginales to accommodate three novel epiphytic basidiomycetous yeast species from America, Europe and Asia.
abstract: Among many isolates that resulted from four independent surveys of yeasts associated with plants in Brazil, the USA, Portugal and Taiwan, we have characterized eighteen basidiomycetous strains, two of which were conspecific with the type strain of Rhodotorula acheniorum, whereas the remaining sixteen isolates appeared not to correspond to any previously described species. Microsatellite-PCR fingerprinting with primers M13 and (GTG)5 confirmed that the latter strains formed three genetically distinct groups. Each group was considered to represent a distinct species based on nucleotide sequences of the D1/D2 domains of the 26S rRNA gene and the internal transcribed spacer (ITS) region. Phylogenetic analyses of sequence data placed the putative novel species in a clade with R. acheniorum and the dimorphic smut fungus Farysia chardoniana. A novel anamorphic genus, Farysizyma, is created to accommodate the three undescribed species, which were named Farysizyma itapuensis, Farysizyma setubalensis and Farysizyma taiwaniana. A new combination, Farysizyma acheniorum, is proposed for R. acheniorum, which may represent the yeast-phase anamorph of Farysia thuemenii.
authors.affiliation: Centro de Recursos Microbiológicos (CREM), Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal.
authors.forename: João
authors.initials: J
authors.lastname: Inácio
authors.forename: Melissa Fontes
authors.initials: MF
authors.lastname: Landell
authors.forename: Patrícia
authors.initials: P
authors.lastname: Valente
authors.forename: Pi-Han
authors.initials: PH
authors.lastname: Wang
authors.forename: Yen-Ting
authors.initials: YT
authors.lastname: Wang
authors.forename: Shan-Hua
authors.initials: SH
authors.lastname: Yang
authors.forename: Jessamyn S
authors.initials: JS
authors.lastname: Manson
authors.forename: Marc-André
authors.initials: MA
authors.lastname: Lachance
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Rosa
authors.forename: Alvaro
authors.initials: A
authors.lastname: Fonseca
mesh_terms: D010802:Phylogeny; D010944:Plants / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D017422:Sequence Analysis, DNA; D014587:Ustilaginales / Q000145:classification* / Q000235:genetics