Submitted to: Mycotaxon
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: April 1, 1999
Publication Date: N/A
Interpretive Summary: Identification of yeasts from standard growth tests and microscopic characteristics is often imprecise. Comparisons of the chemical composition (nucleotide sequences) of a yeast's genetic material (DNA) allows precise identification. Nucleotide sequence comparisons allowed detection of the two new species described in this report. These yeasts are of potential biotechnological significance because other species of Saccharomycopsis are used industrially for production of the enzyme amylase used to degrade starch. Especially important in fermentation to breakdown starch to sugars for the production of fuel alcohol.
Technical Abstract: Saccharomycopsis microspora, comb. nov. (type strain NRRL Y-7404, CBS 6393) and Candida lassenensis, sp. nov. (type strain NRRL YB-3657, CBS 8524) are described. The species were recognized as novel from nucleotide substitutions in domain D1/D2 of 26S ribosomal DNA, a region that is sufficiently divergent to allow resolution of nearly all ascomycetous yeast species.