Cletus P. Kurtzman

Trichomonascaceae is a family of fungi in the order Saccharomycetales. According to the 2007 Outline of Ascomycota, the family contains 5 genera.

Debaryomycetaceae is a family of fungus in the order Saccharomycetales.

Kazachstania exigua is a yeast species that commonly occurs in olive brine and in some kefir cultures. It is one of the yeast species used in the production of sourdough. It is acid-tolerant and maltose-negative.

Wickerhamomyces anomalus is a species of ascomycete and teleomorphic fungi of the genus Wickerhamomyces. It is used as a preventive (biocontrol agent) for undesirable fungi or mold, nevertheless it may spoil food in large quantities. It is used in wine making, airtight stored grain (preventing Aspergillus flavus aflatoxins), apples, and grapevines. Pichia anomala has been reclassified as Wickerhamomyces anomalus.

Meyerozyma guilliermondii (formerly known as Pichia guilliermondii until its rename in 2010) is a species of yeast of the genus Meyerozyma whose asexual or anamorphic form is known as Candida guilliermondii. Candida guilliermondii has been isolated from numerous human infections, mostly of cutaneous origin, if only from immunosuppressed patients. C. guilliermondii has also been isolated from normal skin and in seawater, feces of animals, fig wasps, buttermilk, leather, fish, and beer.

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Eremothecium gossypii (also known as Ashbya gossypii) is a filamentous fungus or mold closely related to yeast, but growing exclusively in a filamentous way. It was originally isolated from cotton as a pathogen causing stigmatomycosis by Ashby and Nowell in 1926. This disease affects the development of hair cells in cotton bolls and can be transmitted to citrus fruits, which thereupon dry out and collapse (dry rot disease). In the first part of the 20th century, E. gossypii and two other fungi causing stigmatomycosis (Eremothecium coryli, Aureobasidium pullulans) made it virtually impossible

The Eremotheciaceae are a family of yeasts in the order Saccharomycetales. According to the 2007 Outline of Ascomycota, the family contains two genera, but the placement of the genus Coccidiascus is uncertain. Species in the family have widespread distributions, and are especially prevalent in tropical areas.

Zygotorulaspora florentina (formerly Zygosaccharomyces florentinus) is a plant pathogen. It was first described (as Zygosaccharomyces florentinus) in 1960 and transferred to Zygotorulaspora in 2003, initially under the incorrectly formed specific epithet florentinis.

Wickerhamomyces is a genus of fungi within the Phaffomycetales order. It is placed within the family of Phaffomycetaceae.

Vanderwaltozyma polyspora is a species of multi-spored yeast fungus in the family Saccharomycetaceae found in soil, first described by Johannes P. van der Walt, and moved to a new genus by Cletus P. Kurtzman in 2003 (together with Vanderwaltozyma yarrowii).

Scheffersomyces stipitis (formerly Pichia stipitis) is a species of yeast, belonging to the "CUG Clade" of ascomycetous yeasts. This is a group of fungi that substitute serine for leucine when the CUG codon is encountered. S. stipitis is distantly related to brewer's yeast, Saccharomyces cerevisiae, which uses the conventional codon system. Found, among other places, in the guts of passalid beetles, S. stipitis is capable of both aerobic and oxygen limited fermentation, and has the highest known natural ability of any yeast to directly ferment xylose, converting it to ethanol, a potentially

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Lachancea thermotolerans is a species of yeast.

Kuraishia molischiana is a fungus in the genus Kuraishia that exists as a yeast.

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Aspergillus nomius is a species of fungus in the genus Aspergillus. It is from the Flavi section. The species was first described in 1987. It has been reported to produce aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, aspergillic acid, kojic acid, nominine, paspaline, pseurotin, and tenuazonic acid. A. nomius has been identified as the cause of human infections.

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Vanderwaltozyma is a genus of ascomycetous yeasts in the family Saccharomycetaceae. The genus name is in honour of Johannes P. van der Walt (1925-2011), a South African mycologist who first described Vanderwaltozyma polyspora and Vanderwaltozyma yarrowii (in the Kluyveromyces genus). The genus was circumscribed by Cletus P. Kurtzman in 2003. Vanderwaltozyma species are characterized by the fermentation of glucose and galactose, the assimilation of nitrogen sources like ethylamine, nitrate, lysine, and cadaverine, and spores shaped spheroidal, oblong, or reniform.

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Ogataea methanolica is a homothallic haploid organism that offers many of the advantages of a eukaryotic expression system such as protein processing and protein folding, while being as easy to manipulate as E. coli or Saccharomyces cerevisiae. It is faster, easier, and less expensive to use than other eukaryotic expression systems such as baculovirus or mammalian tissue culture, and generally gives higher expression levels. As a yeast, it shares the advantages of molecular and genetic manipulations with Saccharomyces, and it has the added advantage of 10- to 100-fold higher heterologous

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Macrorhabdus ornithogaster, also known by the common name avian gastric yeast, is an infectious fungus usually found in the digestive systems of birds, causing a number of health complications. Formerly believed to be a bacterium, it has been determined to be a yeast.

Lachancea kluyveri is an ascomycetous yeast associated with fruit flies, slime fluxes, soils and foods.

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Komagataella pseudopastoris is an ascomycete fungi existing as a yeast.

Eremothecium coryli (originally Nematospora coryli) is a plant pathogen that causes stigmatomycosis.

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