Cold-adapted yeasts from Antarctica and the Italian Alps—description of three novel species: Mrakia robertii sp. nov., Mrakia blollopis sp. nov. and Mrakiella niccombsii sp. nov.

被引：0
作者：
Skye Robin Thomas-Hall
Benedetta Turchetti
Pietro Buzzini
Eva Branda
Teun Boekhout
Bart Theelen
Kenneth Watson
机构：
[1] University of New England,School of Biological Sciences
[2] University of Perugia,Department of Applied Biology
[3] CBS-KNAW Fungal Diversity Centre,Yeast Research Group
来源：
Extremophiles | 2010年 / 14卷
关键词：
Antarctic microbiology; Cold adaptation; Molecular phylogeny; Psychrophiles; Taxonomy;
D O I：
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中图分类号：
学科分类号：
摘要：
Worldwide glaciers are annually retreating due to global overheating and this phenomenon determines the potential lost of microbial diversity represented by psychrophilic microbial population sharing these peculiar habitats. In this context, yeast strains, all unable to grow above 20°C, consisting of 42 strains from Antarctic soil and 14 strains isolated from Alpine Glacier, were isolated and grouped together based on similar morphological and physiological characteristics. Sequences of the D1/D2 and ITS regions of the ribosomal DNA confirmed the previous analyses and demonstrated that the strains belong to unknown species. Three new species are proposed: Mrakia robertii sp. nov. (type strain CBS 8912), Mrakia blollopis sp. nov. (type strain CBS 8921) and a related anamorphic species Mrakiella niccombsii sp. nov. (type strain CBS 8917). Phylogenetic analysis of the ITS region revealed that the new proposed species were closely related to each other within the Mrakia clade in the order Cystofilobasidiales, class Tremellomycetes. The Mrakia clade now contains 8 sub-clades. Teliospores were observed in all strains except CBS 8918 and for the Mrakiella niccombsii strains.
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页码：47 / 59
页数：12
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共 118 条
  • [1] Bab’eva IP(2002) sp. nov.—a new species of psychrophilic yeast from forest substrates Mikrobiologiya 71 526-532
  • [2] Lisichkina GA(2003)Cold-adapted yeasts as producers of cold-active polygalacturonases Extremophiles 7 185-193
  • [3] Reshetova IS(2007)Extracellular enzymatic activities of basidiomycetous yeasts isolated from glacial and subglacial waters of northwest Patagonia (Argentina) Can J Microbiol 53 519-525
  • [4] Danilevich VN(2007)Biodiversity of cold-adapted yeasts from glacial meltwater rivers in Patagonia, Argentina FEMS Microbiol Ecol 59 331-341
  • [5] Birgisson H(2000)Sequences of psychrotrophic yeast from Antarctica Extremophiles 2 41-50
  • [6] Delgado O(2000)Sequences of psychrophilic fungi amplified from glacier-preserved ascolichens Can J Bot 78 1450-1459
  • [7] Garcia Arroyo L(1966)Three new yeast from Antarctic soils: Antonie Leeuwenhoek 32 25-28
  • [8] Hatti-Kaul R(1966), Antonie Leeuwenhoek 32 29-38
  • [9] Mattiasson B(2000) and Antonie Leeuwenhoek 77 7-12
  • [10] Brizzio S(1996) spp J Microsc 184 81-87
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