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Journal of Zhejiang University SCIENCE B 2007 Vol.8 No.4 P.260-265


Mrakia psychrophila sp. nov., a new species isolated from Antarctic soil

Author(s):  XIN Ming-xiu, ZHOU Pei-jin

Affiliation(s):  College of Life Sciences, Beijing Normal University, Beijing 100875, China; more

Corresponding email(s):   xinmingxiu@bnu.edu.cn

Key Words:  Mrakia psychrophila, Psychrophilic yeast, 18S rDNA sequence, Teliospores

XIN Ming-xiu, ZHOU Pei-jin. Mrakia psychrophila sp. nov., a new species isolated from Antarctic soil[J]. Journal of Zhejiang University Science B, 2007, 8(4): 260-265.

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%T Mrakia psychrophila sp. nov., a new species isolated from Antarctic soil
%A XIN Ming-xiu
%A ZHOU Pei-jin
%J Journal of Zhejiang University SCIENCE B
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%I Zhejiang University Press & Springer
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T1 - Mrakia psychrophila sp. nov., a new species isolated from Antarctic soil
A1 - XIN Ming-xiu
A1 - ZHOU Pei-jin
J0 - Journal of Zhejiang University Science B
VL - 8
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SP - 260
EP - 265
%@ 1673-1581
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2007.B0260

The yeast strain (Y18) was isolated from a soil sample collected from Fildes Peninsula, Antarctica. The strain is a psychrophilic yeast with optimum and maximum growth temperatures of 10 °C and 18 °C, respectively. teliospores were formed after 7 d on malt agar, when the germination of teliospores was observed. Both inositol and D-glucuronate were assimilated. Positive results of the DBB (diazonium blue B) color reaction, urease test, and starch formation were observed. The major CoQ is Q8. All results indicated that Y18 belongs to the genes of Mrakia. The 18S rDNA sequence analyses showed that Y18 is closely related to Mrakia frigida. DNA-DNA relatedness study, and some biochemistry characteristics indicated that Y18 represents a new species for which Mrakia psychrophila sp. nov. is proposed.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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