| Kluyveromyces dobzhanskii | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Saccharomycetes |
| Order: | Saccharomycetales |
| Family: | Saccharomycetaceae |
| Genus: | Kluyveromyces |
| Species: | K. dobzhanskii |
| Binomial name | |
| Kluyveromyces dobzhanskii (Shehata, Mrak & Phaff) Van der Walt, 1971 | |
| Synonyms | |
| |
Kluyveromyces dobhanskii is a species of Kluyveromyces fungus existing as a yeast.
Upon discovery, K. dobzhanskii was placed into the genus Saccharomyces . [1] A 1971 reorganization of certain fungal taxa placed K. dobzhanskii into the genus Kluyveromyces, where it has remained since. [2] It is named after Russian-American mycologist Theodosius Dobzhansky. [1]
After three days of growth on YM agar, cells of K. dobzhanskii have been described as either spherical or cylindrical to ellipsoidal, with colorations ranging from white to pink, due to the production of the iron chelate pulcherrimin within the cells. [3]
Based on sequences of its nucleic acid, K. dobzhanskii is considered to be a very close relative of K. lactis , K. wickerhamii, and K. marxianus , [4] which is reinforced by the fact that it can mate to create fertile offspring with these three species in a laboratory setting. [5] K. dobzhanskii has been found to have a diverse array of karyotypes among its strains. [6]
Kluyveromyces dobzhanskii appears to be associated with insects. It was first isolated from a Drosophila species in the Santa Rosa and San Jacinto Mountains National Monument in California. [1] It has also been isolated from the moth species Noctua pronuba [7] and Valeria sp. [8]
Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitute 1% of all described fungal species.
Brettanomyces is a non-spore forming genus of yeast in the family Saccharomycetaceae, and is often colloquially referred to as "Brett". The genus name Dekkera is used interchangeably with Brettanomyces, as it describes the teleomorph or spore forming form of the yeast, but is considered deprecated under the one fungus, one name change. The cellular morphology of the yeast can vary from ovoid to long "sausage" shaped cells. The yeast is acidogenic, and when grown on glucose rich media under aerobic conditions, produces large amounts of acetic acid. Brettanomyces is important to both the brewing and wine industries due to the sensory compounds it produces.
Kluyveromyces marxianus in ascomycetous yeast and member of the genus, Kluyveromyces. It is the sexual stage of Atelosaccharomyces pseudotropicalis also known as Candida kefyr. This species has a homothallic mating system and is often isolated from dairy products.
Kluyveromyces is a genus of ascomycetous yeasts in the family Saccharomycetaceae. Some of the species, such as K. marxianus, are the teleomorphs of Candida species.
The Crabtree effect, named after the English biochemist Herbert Grace Crabtree, describes the phenomenon whereby the yeast, Saccharomyces cerevisiae, produces ethanol (alcohol) in aerobic conditions at high external glucose concentrations rather than producing biomass via the tricarboxylic acid (TCA) cycle, the usual process occurring aerobically in most yeasts e.g. Kluyveromyces spp. This phenomenon is observed in most species of the Saccharomyces, Schizosaccharomyces, Debaryomyces, Brettanomyces, Torulopsis, Nematospora, and Nadsonia genera. Increasing concentrations of glucose accelerates glycolysis which results in the production of appreciable amounts of ATP through substrate-level phosphorylation. This reduces the need of oxidative phosphorylation done by the TCA cycle via the electron transport chain and therefore decreases oxygen consumption. The phenomenon is believed to have evolved as a competition mechanism around the time when the first fruits on Earth fell from the trees. The Crabtree effect works by repressing respiration by the fermentation pathway, dependent on the substrate.
Lachancea kluyveri is an ascomycetous yeast associated with fruit flies, slime fluxes, soils and foods.
Trichosporon is a genus of anamorphic fungi in the family Trichosporonaceae. All species of Trichosporon are yeasts with no known teleomorphs. Most are typically isolated from soil, but several species occur as a natural part of the skin microbiota of humans and other animals. Proliferation of Trichosporon yeasts in the hair can lead to an unpleasant but non-serious condition known as white piedra. Trichosporon species can also cause severe opportunistic infections (trichosporonosis) in immunocompromised individuals.
The Pichiaceae are a family of yeasts in the order Saccharomycetales. According to the 2007 Outline of Ascomycota, the family contains four genera, but GBIF lists 15 genera. The family was named by Zender in 1925.
Yarrowia is a fungal genus in the family Dipodascaceae. For a while the genus was monotypic, containing the single species Yarrowia lipolytica, a yeast that can use unusual carbon sources, such as hydrocarbons. This has made it of interest for use in industrial microbiology, especially for the production of specialty lipids. Molecular phylogenetics analysis has revealed several other species that have since been added to the genus.
Kazachstania humilis is a species of yeast in the genus Kazachstania. It commonly occurs in sourdough and kefir cultures, along with different species of lactic acid bacteria. K. humilis is the most representative yeast species found in type I sourdough ecosystems. The effects of electric field strength, pulse width and frequency, or pulse shape is significant on the membranes of Candida humilis, but not very noticeable.
Aspergillus eucalypticola is a species of fungus in the genus Aspergillus. It belongs to the group of black Aspergilli which are important industrial workhorses. A. eucalypticola belongs to the Nigri section. The species was first described in 2011. A. aculeatinus has been isolated from eucalyptus leaves in Australia, and has been shown to produce pyranonigrin A, funalenone, aurasperone B and other naphtho-γ-pyrones.
Aspergillus neoniger is a species of fungus in the genus Aspergillus. It belongs to the group of black Aspergilli which are important industrial workhorses. A. neoniger belongs to the Nigri section. The species was first described in 2011. The species was isolated from desert sand in Namibia and mangrove water in Venezuela. A. neoniger produces aurasperone B and pyranonigrin A.
Aspergillus sclerotiicarbonarius is a species of fungus in the genus Aspergillus. It belongs to the group of black Aspergilli which are important industrial workhorses. A. sclerotiicarbonarius belongs to the Nigri section. The species was first described in 2008. It has been isolated from Thai coffee beans.
Phaeotremella foliacea is a species of fungus in the family Phaeotremellaceae. It produces brownish, frondose, gelatinous basidiocarps and is parasitic on the mycelium of Stereum sanguinolentum, a fungus that grows on dead attached and recently fallen branches of conifers. It is widespread in north temperate regions. In the UK it has the recommended English name leafy brain and has also been called jelly leaf and brown witch's butter. Prior to 2017, the name Tremella foliacea was also applied to similar-looking species on broadleaf trees, now distinguished as Phaeotremella frondosa and Phaeotremella fimbriata.
Hanseniaspora osmophila is a species of yeast in the family Saccharomycetaceae. It is found in soil and among the bark, leaves, and fruits of plants, as well as fermented foods and beverages made from fruit.
Vanderwaltozyma is a genus of ascomycetous yeasts in the family Saccharomycetaceae.
Kluyveromyces nonfermentans is a Kluyveromyces species occurring as a yeast. It was originally isolated from the deep sea, with various strains being isolated from sediment, a clam, and a crab. It is notable among the Kluyveromyces species as the only member unable to ferment glucose.
Kluyveromyces aestuarii is a Kluyveromyces species of fungus occurring as a marine yeast. It was discovered in 1961 and was originally placed in the genus Saccharomyces.
Kluyveromyces wickerhamii is a fungus in the genus Kluyveromyces that exists as a yeast.
Kuraishia capsulata is a fungus in the genus Kuraishia that exists as a yeast.