| 论文题目: | Devosia psychrophila sp nov and Devosia glacialis sp nov., from alpine glacier cryoconite, and an emended description of the genus Devosia |
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| 作者: | Zhang, DC; Redzic, M; Liu, HC; Zhou, YG; Schinner, F; Margesin, R |
| 联系作者: | Margesin, R |
| 刊物名称: | INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY |
| 期: | |
| 卷: | 62 |
| 页: | 710-715 |
| 年份: | 2012 |
| 影响因子: | 2.268 |
| 论文下载: | |
| 摘要: | Two psychrophilic strains, Cr7-05(T) and Cr4-44(T), isolated from alpine glacier cryoconite, were characterized by using a polyphasic approach. Both strains were psychrophilic, showing good growth over a temperature range of 1-20 degrees C. The chemotaxonomic characteristics of these isolates included the presence of C-18:1 omega 7c and summed feature 3 (C-16:1 omega 7c and/or C-16:1 omega 6c) as the major cellular fatty acids, Q-10 as the predominant ubiquinone and diphosphatidylglycerol, phosphatidylglycerol and unknown glycolipids as major polar lipids. The DNA G+C contents of strains Cr7-05(T) and Cr4-44(T) were 61.4 and 63.6 mol%, respectively. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the two isolates belong to the genus Devosia. The 16S rRNA gene sequence similarity between the two strains was 98.6 %, but DNA-DNA hybridization indicated 54 % relatedness. Strains Cr7-05(T) and Cr4-44(T) exhibited 16S rRNA gene sequence similarity of 94.7-97.2 and 94.9-96.9 %, respectively, to the type strains of recognized Devosia species. On the basis of phenotypic characteristics, phylogenetic analysis and DNA-DNA relatedness data, strains Cr7-05(T) and Cr4-44(T) represent two novel species within the genus Devosia, for which the names Devosia psychrophila sp. nov. (type strain Cr7-05(T) =DSM 22950(T) =CGMCC 1.10210(T) =CIP 110130(T)) and Devosia glacialis sp. nov. (type strain Cr4-44(T) =CGMCC 1.10691(T) =LMG 26051(T)) are proposed. An emended description of the genus Devosia is also provided. |
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