Metschnikowiella zobellii sp.nov. and M. krissii sp.nov., two Yeasts from the Pacific Ocean Pathogenic for Daphnia magna

“…As van Uden commented subsequently [180], none of the Metschnikowia species was isolated in pure culture by their authors, their descriptions being based on morphological observations of the yeasts in the hosts on which they were parasitic. This was so until van Uden, himself, obtained pure cultures of M. krissii and M. zobellii from marine sources [253].…”

mentioning

confidence: 99%

A history of research on yeasts 8: taxonomy

Barnett

2004

Yeast

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“…Physiologically they may be differentiated by the much higher osmotolerance of M. zobellii and the stronger assimilation of D-glucitol and glucono-8-lactone by that species. van Uden and Castelo-Branco (1961) also reported that M . zobellii differs from M. krissii by its capacity to assimilate D-glucosamine, a compound which we have found extremely useful in species differentiation.…”

Section: Discussionmentioning

confidence: 93%

DNA relatedness among aquatic yeasts of the genus Metschnikowia and proposal of the species Metschnikowia australis comb. nov.

Mendonça-Hagler¹,

Hagler²,

Phaff³

et al. 1985

Can. J. Microbiol.

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DNA hybridization studies were conducted to determine the taxonomic status of the aquatic group of Metschnikowia species and their varieties. Among the DNAs of the four varieties of Metschnikowia bicuspidata, that of Metschnikowia bicuspidata var. australis showed 37 to 51% relative binding with the DNAs of Metschnikowia bicuspidata var. bicuspidata and of the varieties chathamia and californica. On this basis, low intervarietal fertility, and unique habitat in antarctic seawater, we have proposed to raise M. bicuspidata var. australis to the rank of species, Metschnikowia australis, comb. nov. DNA complementarity of Metschnikowia bicuspidata var. californica and Metschnikowia bicuspidata var. chathamia DNA was greater than 80% with that of M. bicuspidata var. bicuspidata. Metschnikowia australis can be differentiated from other Metschnikowia species and varieties by its inability to form chlamydospores, the formation of two needle-shaped ascospores per ascus, lack of glucose fermentation, and lack of assimilation of both methyl-alpha-D-glucoside and glucono-delta-lactone. Other DNA-DNA reassociation experiments showed that Metschnikowia zobellii is a distinct species when compared with both aquatic and terrestrial species of the genus.

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Metschnikowiella zobellii sp.nov. and M. krissii sp.nov., two Yeasts from the Pacific Ocean Pathogenic for Daphnia magna

Abstract: SUMMARYMetschnikowiella xobellii sp.nov. and M . krissii sp.nov. are described and Latin diagnoses given. Both species form on VS agar (Wickerham, 1951) only from sea water, 1-57/100 ml.

Cited by 37 publications

References 3 publications

Metschnikowia bicuspidata dominates in Taiwanese cold-weather yeast infections of Macrobrachium rosenbergii

Metschnikowia bicuspidata dominates in Taiwanese cold-weather yeast infections of Macrobrachium rosenbergii

A history of research on yeasts 8: taxonomy

DNA relatedness among aquatic yeasts of the genus Metschnikowia and proposal of the species Metschnikowia australis comb. nov.

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