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Submitted to: Federation of European Microbiological Societies Yeast Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/2/2001
Publication Date: N/A
Citation: N/A

Interpretive Summary: The ARS Culture Collection contains many unidentified yeasts from unusual habitats and some of these fungi are expected to have novel properties of use to agriculture. Until the recent development at NCAUR of a species-specific gene sequence database for yeasts, these unknown isolates could not be accurately identified. In the present work, gene sequencing showed that some of the unknowns represent six species of the genus Candida that are new to science. These six species occur in a sparsely populated area of the yeast family and thus bring new knowledge to understanding the diversity of yeasts. Since many of the isolates are from insects, their value as biocontrol organisms needs to be examined.

Technical Abstract: Six new species of the yeast genus Candida are described from their unique nucleotide sequences in the D1/D2 domain of 26S rDNA. Five of these species form a clade with Candida tanzawaensis, and the sixth is basal to this group. The new species and their sources of isolation are the following: Candida ambrosiae (type strain NRRL YB-1316, CBS 8844), from insect frass, rotted wood and mushroom fruiting bodies; Candida canberraensis (type strain NRRL YB-2417, CBS 8846), from soil; Candida caryicola (type strain NRRL YB-1499, CBS 8847), from a pignut hickory tree; Candida prunicola (type strain NRRL YB-869, CBS 8848), from exuded gum of a black cherry tree; Candida pyralidae (type strain NRRL Y-27085, CBS 5035), from insect frass; Candida xylopsoci (type strain NRRL Y-27066, CBS 6037), from insect frass.