Submitted to: Antonie Van Leeuwenhoek
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: September 25, 2000
Publication Date: N/A
Interpretive Summary: Yeasts can now be rapidly and accurately identified from their unique gene sequences (DNA or genetic material chemistry), but in order to establish a stable system for naming the yeasts, many additional undescribed species must be included in the database to understand the boundaries of each of the groups or genera. Four new yeasts are described in this report and two of them are quite divergent genetically, which has added additional structure to the taxonomic system. One of the species (Candida ghanaensis) is particularly interesting because it appears to be intermediate between the budding species and another group that divides by a process termed fission.
Technical Abstract: Four new species of Candida are described based on their unique nucleotide sequences in the D1/D2 domain of large subunit (26S) ribosomal DNA. Candida peoriaensis (type strain NRRL YB-1497, CBS 8800) and C. ponderosae (type strain NRRL YB-2307, CBS 8801) are members of the Pichia anomala clade and were isolated in the U. S. from, respectively, the stump of an elm tree (Ulmus sp.) and from insect frass of a Ponderosa pine (Pinus ponderosa). Candida ghanaensis (type strain NRRL YB-1486, CBS 8798) is a phylogenetically divergent species from soil in Ghana and appears related to the Dipodascus/Geotrichum clade. Candida litsaeae (type strain NRRL YB-3246, CBS 8799) was isolated from the frass of an insect-infested Litsaea polyantha tree from India, and is a divergent species that is most closely related to Candida ontarioensis.