Cryptococcus spencermartinsiae sp. nov., a basidiomycetous yeast isolated from glacial waters and apple fruits

García, Virginia de; Brizzio, Silvia; Russo, Gabriel; Rosa, Carlos A.; Boekhout, Teun; Theelen, Bart; Libkind, Diego; Broock, María van

doi:10.1099/ijs.0.013177-0

Cited by 31 publications

(7 citation statements)

References 15 publications

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“…One isolate of Cryptococcus (strain identified as Cryptococcus sp. 1, GenBank accession number ) differed by nine nucleotide substitutions in the D1/D2 region of the rRNA gene from the closest known species, Cryptococcus spencermartinsiae , a yeast isolated from glacial melting waters in Patagonia by de Garcia et al (2010). Our isolate probably represents a new Cryptococcus species that is related to C. spencermartinsiae .…”

Section: Resultsmentioning

confidence: 83%

Yeasts from an oligotrophic lake in Patagonia (Argentina): diversity, distribution and synthesis of photoprotective compounds and extracellular enzymes

Brandão

Libkind

Vaz

et al. 2011

FEMS Microbiology Ecology

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Nahuel Huapi (NH) Lake is an oligotrophic temperate lake of glacial origin with high transparency, surrounded by well-developed forests and located at San Carlos de Bariloche, Nahuel Huapi National Park, in Patagonia, Argentina. In this lake, we characterized yeast distribution and diversity along a south-to-north transect and established a relationship between the ability to produce photoprotective compounds (PPCs) (carotenoid pigments and mycosporines) and the occurrence of yeast at different collection points. Subsurface water samples were filtered for yeast isolation. Total yeast counts ranged between 22 and 141 CFU L(-1) , and the highest values corresponded to the most impacted sites. Littoral sites had a low proportion of yeast-producing PPCs and this group prevailed in pelagic sites. This is probably a result of the high transparency of the water and the increased UV exposure. The yeast community from NH Lake showed a high species richness and a uniform distribution of taxa between pelagic and border collection points. Yeasts were identified as belonging to 14 genera and 34 species. Rhodotorula mucilaginosa and Cryptococcus victoriae were the most frequently found species, representing 14.4% and 13.6% of the total yeast isolates, respectively. Most of the yeast isolates demonstrated at least one extracellular enzymatic activity (mainly cellulase and lipase activities), which suggested that these microorganisms are metabolically active in the lake.

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Section: Resultsmentioning

confidence: 83%

Yeasts from an oligotrophic lake in Patagonia (Argentina): diversity, distribution and synthesis of photoprotective compounds and extracellular enzymes

Brandão

Libkind

Vaz

et al. 2011

FEMS Microbiology Ecology

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“…2015 ). Additionally, C. spencermartinsiae showed phenotypic characters distinct from other members of the foliacea clade ( de García et al. 2010 ).…”

Section: Taxonomymentioning

confidence: 99%

Towards an integrated phylogenetic classification of theTremellomycetes

Liu¹,

Wang²,

Göker³

et al. 2015

Studies in Mycology

414

356

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Families and genera assigned to Tremellomycetes have been mainly circumscribed by morphology and for the yeasts also by biochemical and physiological characteristics. This phenotype-based classification is largely in conflict with molecular phylogenetic analyses. Here a phylogenetic classification framework for the Tremellomycetes is proposed based on the results of phylogenetic analyses from a seven-genes dataset covering the majority of tremellomycetous yeasts and closely related filamentous taxa. Circumscriptions of the taxonomic units at the order, family and genus levels recognised were quantitatively assessed using the phylogenetic rank boundary optimisation (PRBO) and modified general mixed Yule coalescent (GMYC) tests. In addition, a comprehensive phylogenetic analysis on an expanded LSU rRNA (D1/D2 domains) gene sequence dataset covering as many as available teleomorphic and filamentous taxa within Tremellomycetes was performed to investigate the relationships between yeasts and filamentous taxa and to examine the stability of undersampled clades. Based on the results inferred from molecular data and morphological and physiochemical features, we propose an updated classification for the Tremellomycetes. We accept five orders, 17 families and 54 genera, including seven new families and 18 new genera. In addition, seven families and 17 genera are emended and one new species name and 185 new combinations are proposed. We propose to use the term pro tempore or pro tem. in abbreviation to indicate the species names that are temporarily maintained.

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“…Cryptococcus victoriae , Leucosporidiella fragaria and Rhodotorula mucilaginosa were the most frequent species (Libkind et al ., ; de Garcia et al ., ; Brandão et al ., ) (Table ). The novel species Cryptococcus spencermartinsiae , Cystofilobasidium lacus‐mascardii and Wickerhamomyces patagonicus were described (de García et al ., , b; Libkind et al ., ). No combined culture‐dependent and culture‐independent approaches were used.…”

Section: Diversity and Ecology Of Psychrophilic Yeasts In Worldwide Gmentioning

confidence: 99%

Psychrophilic yeasts from worldwide glacial habitats: diversity, adaptation strategies and biotechnological potential

Buzzini

Branda

Goretti

et al. 2012

FEMS Microbiol Ecol

233

132

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Glacial habitats (cryosphere) include some of the largest unexplored and extreme biospheres on Earth. These habitats harbor a wide diversity of psychrophilic prokaryotic and eukaryotic microorganisms. These highly specialized microorganisms have developed adaptation strategies to overcome the direct and indirect life-endangering influence of low temperatures. For many years Antarctica has been the geographic area preferred by microbiologists for studying the diversity of psychrophilic microorganisms (including yeasts). However, there have been an increasing number of studies on psychrophilic yeasts sharing the non-Antarctic cryosphere. The present paper provides an overview of the distribution and adaptation strategies of psychrophilic yeasts worldwide. Attention is also focused on their biotechnological potential, especially on their exploitation as a source of cold-active enzymes and for bioremediation purposes.

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Cryptococcus spencermartinsiae sp. nov., a basidiomycetous yeast isolated from glacial waters and apple fruits

Cited by 31 publications

References 15 publications

Yeasts from an oligotrophic lake in Patagonia (Argentina): diversity, distribution and synthesis of photoprotective compounds and extracellular enzymes

Yeasts from an oligotrophic lake in Patagonia (Argentina): diversity, distribution and synthesis of photoprotective compounds and extracellular enzymes

Towards an integrated phylogenetic classification of theTremellomycetes

Psychrophilic yeasts from worldwide glacial habitats: diversity, adaptation strategies and biotechnological potential

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