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United States Department of Agriculture

Agricultural Research Service

Research Project: Genomic Analyses and Management of Agricultural and Industrial Microbial Genetic Resources and Associated Information

Location: Mycotoxin Prevention and Applied Microbiology Research

Title: Three new anascosporic genera of the Saccharomycotina: Danielozyma gen. nov., Deakozyma gen. nov. and Middelhovenomyces gen. nov.)

item Kurtzman, Cletus
item Robnett, Christie

Submitted to: Antonie Van Leeuwenhoek
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/1/2014
Publication Date: 5/1/2014
Publication URL:
Citation: Kurtzman, C.P., Robnett, C.J. 2014. Three new anascosporic genera of the Saccharomycotina: Danielozyma gen. nov., Deakozyma gen. nov. and Middelhovenomyces gen. nov. Antonie Van Leeuwenhoek. 105(5):933-942.

Interpretive Summary: New yeast species represent a potential source of novel biochemical reactions of interest to biotechnologists, and these species also are important additions to databases that are used for identification of species of agricultural and medical importance. In this paper, three new yeast genera are described from multiple gene sequence analysis and have been named Deakozyma, Danielozyma, and Middelhovenomyces. These three genera will be of particular interest to taxonomists because the species assigned are from the genus Candida, which is a “dumping ground” of nearly 500 species of uncertain relatedness. Consequently, this study provides a genetics-based classification to species that previously had unknown genetic affinities and this type of classification enables prediction of shared biotechnological properties. Following publication of the description of these genera, strains of the species will become available to biotechnologists and other scientists for further study.

Technical Abstract: Three new non-ascosporic, ascomycetous yeast genera are proposed based on their isolation from currently described species and genera. Phylogenetic placement of the genera was determined from analysis of nuclear gene sequences for D1/D2 large subunit rRNA, small subunit rRNA, translation elongation factor-1a and RNA polymerase II, subunits B1 and B2. The new taxa are: Deakozyma gen. nov., type species Deakozyma indianensis sp. nov. (type strain NRRL YB-1937, CBS 12903); Danielozyma gen. nov., type species Danielozyma ontarioensis comb. nov. (type strain NRRL YB-1246, CBS 8502); Danielozyma litsaeae comb. nov. (type strain NRRL YB-3246, CBS 8799); Middelhovenomyces gen. nov., type species Middelhovenomyces tepae comb. nov. (type strain NRRL Y-17670, CBS 5115) and Middelhovenomyces petrohuensis comb. nov. (type strain NRRL Y-17663, CBS 8173).

Last Modified: 05/27/2017
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