Candida aquatica sp.n. isolated from water scums

Jones, E. B. G.; Slooff, W. C.

doi:10.1007/bf02097464

Cited by 19 publications

(7 citation statements)

References 9 publications

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“…The type strain (CBS 5443 T ) was isolated from a freshwater lake in Great Britain. That strain was originally described (Jones & Sloof, 1966) with a T max of 25 u C; however, our own investigations demonstrated the absence of growth at 25 u C but growth at 20 u C both in liquid culture and on agar plates in different media. The absence of growth at 25 u C is also indicated by the CBS Data Base (http://www.cbs.knaw.nl/) and Barnett et al (2000).…”

Section: Phenotypic Properties Of Strainsmentioning

confidence: 74%

“…The absence of growth at 25 u C is also indicated by the CBS Data Base (http://www.cbs.knaw.nl/) and Barnett et al (2000). This discrepancy from the original strain description could be explained by culture methodology (unfortunately not indicated by Jones & Sloof, 1966), since microbial T max can be influenced by a number of factors within the culture conditions, such as medium composition or cultivation in liquid or on solid media (Bowman et al, 1998). As discussed previously, the Cryptococcus aquaticus cluster may represent several species.…”

Section: Phenotypic Properties Of Strainsmentioning

confidence: 98%

“…Table 1. Differentiating phenotypic characteristics of species of the genera Mrakiella and Mrakia Data were taken from Jones & Sloof (1966), Kurtzman & Fell (1998) Raffinose ). As discussed later, the lack of bootstrap support for the Mrakiella clade may be due to the genetic variability within and between species.…”

Section: Phenotypic Properties Of Strainsmentioning

confidence: 99%

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Mrakiella cryoconiti gen. nov., sp. nov., a psychrophilic, anamorphic, basidiomycetous yeast from alpine and arctic habitats

Margesin

Fell

2008

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLO

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). Two representatives were isolated from alpine glacier cryoconite and from northern Siberian sediment. Physiological and biochemical properties are similar to characteristics shared by members of the genus Mrakia, although sexual reproduction is absent. Mrakiella cryoconiti strains are psychrophilic and produce cold-active pectate lyase. Sequence analyses of the ITS and 26S rRNA D1/D2 regions indicated that these strains represent a distinct taxon within the Mrakia clade of the order Cystofilobasidiales, class Tremellomycetes and phylum Basidiomycota. On the basis of phenotypic and genotypic characteristics, Cryptococcus aquaticus (a member of the Mrakia clade) is transferred to the newly described genus as Mrakiella aquatica comb. nov. INTRODUCTIONThe order Cystofilobasidiales (Fell et al., 1999) includes teleomorph and anamorph genera. Psychrophily, i.e. the ability to grow and reproduce well at temperatures around 0 u C (Morita, 1975;Margesin et al., 2008), is a typical feature of the teliospore-producing genus Mrakia; the lowest growth temperature for Mrakia strains was reported to be 212 u C (Panikov & Sizova, 2007). Members of this genus have been isolated from numerous low-temperature environments in various regions, such as forest substrates in European Russia, glacier-preserved fossil lichens in Greenland, Antarctic soil or snow, glacial meltwater rivers in Patagonia, Argentina, and alpine Italian subglacial sediments, ice and meltwater, but also from frozen fish in Japan and frozen yoghurt in Brazil (Fell & Statzell-Tallman, 1998;Moreira et al., 2001;Bab'eva et al., 2002;Xin & Zhou, 2007;Turchetti et al., 2008). Some strains related to the species Mrakia frigida produce cold-active pectinolytic enzymes (Barnett et al., 2000;Nakagawa et al., 2004). These enzymes could be useful for a wide range of applications, such as the food industry for juice clarification below 5 u C or low-temperature pre-treatment of wastewater containing pectic substances. Two cold-active pectate-lyaseproducing strains (Margesin et al., 2005) were previously assigned to Mrakia frigida on the basis of internal transcribed spacer (ITS) and large-subunit (LSU) rRNA gene sequences. However, detailed investigation of the strains demonstrated the absence of teliospore production, which is characteristic of the genus Mrakia. In addition, ITS and LSU rRNA gene D1/D2 sequences indicate that these strains belong to a hitherto unknown genus and species, for which the name Mrakiella cryoconiti gen. nov., sp. nov. is proposed. METHODSSample collection and isolation. Yeast strain A15T was isolated from alpine glacier cryoconite collected from the Stubaier glacier near Innsbruck in Tyrol, Austria (altitude 2900 m above sea level) (Margesin et al., 2002). Strain AG25 originated from a sediment sample containing mud, spring water and moss, which was collected in the Gyda peninsula in northern Siberia (Gounot, 2001). Yeasts were maintained on R2A agar (Difco) plates; long-term storage was performed in 10 % (w/v) skimmed milk at 280 uC.Physiolog...

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Section: Phenotypic Properties Of Strainsmentioning

confidence: 74%

Section: Phenotypic Properties Of Strainsmentioning

confidence: 98%

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Mrakiella cryoconiti gen. nov., sp. nov., a psychrophilic, anamorphic, basidiomycetous yeast from alpine and arctic habitats

Margesin

Fell

2008

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLO

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“…Yeasts, single-celled and free-floating, occur in freshwater habitats, attached to substrates or within a host (Jones and Slooff 1966;Pore and Sorenson 1990; Kurtzman and Fell 2006;Yamaguchi et al 2009;Fell et al 2011). Yeasts are poorly documented in most reviews of freshwater fungi (Goh and Hyde 1996;Shearer et al 2007;Wurzbacker et al 2010;Wurzbacker et al 2011).…”

Section: Group 1 Freshwater Yeastsmentioning

confidence: 99%

4. F reshwater Basidiomycota

Jones¹,

Southworth²,

Libkind³

et al. 2014

Freshwater Fungi

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“…Some species have been reported to have fermentative ability, such as Mrakiella spp., 9) Rhodotorula spp., 10) Xanthophyllomyces spp., 11) and Bandoniozyma spp. 12) Seven species of Mrakia have been reported: Mrakia frigida, Mrakia gelida, Mrakia stokesii, Mrakia nivalis, Mrakia psychrophila, Mrakia robertii, and Mrakia blollopis.…”

mentioning

confidence: 99%