| Autor: |
Yang LL; China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China., Liu HC; China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China., Liu Q; China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.; State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China., Xin YH; China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.; State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China. |
| Abstrakt: |
Two Gram-stain-positive, aerobic, rod-shaped, pink and light pink colony-forming bacteria, designated as Hz2 T and MDT2-14 T , respectively, were isolated from glacier cryoconite samples. Comparisons based on 16S rRNA gene sequences showed that strains Hz2 T and MDT2-14 T take Arthrobacter bussei KR32 T and Arthrobacter zhaoguopingii J391 T as their closest neighbours, respectively. The average nucleotide identity values between the two novel strains and their closest relatives were 83.56 and 93.06 %, respectively. The two strains contain MK-9(H 2 ) as their predominant menaquinone. The polar lipids of both strains were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol and an unidentified glycolipid. The major fatty acids of strain Hz2 T were anteiso-C 15 : 0 , summed feature 3 (comprising C 16 : 1 ω 7 c and/or C 16 : 1 ω 6 c ) and iso-C 15 : 0 , while the major fatty acids of strain MDT2-14 T were anteiso-C 15 : 0 and anteiso-C 17 : 0 . Based on these data, we propose two novel species, Arthrobacter cheniae sp. nov. (Hz2 T = CGMCC 1.9262 T =NBRC 113086 T ) and Arthrobacter frigidicola sp. nov. (MDT2-14 T =CGMCC 1.9882 T =NBRC 113089 T ). |
