Related Experiment Video
Updated: Jul 17, 2026

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
Published on: July 3, 2016
Description of nine novel psychrophilic Pseudarthrobacter species from glaciers
Lei-Lei Yang1,2, Yu-Hua Xin1,2, Qing Liu1,2,3
1State Key Laboratory of Microbial Diversity and Innovative Utilization, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.
Abstract:
Eleven glacier-derived bacterial strains, represented by the type strains HZ3T, TMT1-37T, TMS2-18T, TMN-17T, TMN-24T, MDT1-20T, MDT3-30T, HLT3-6T and MDT3-24T, were isolated from cryoconite samples collected from glaciers in China. These strains comprised nine genomic species because TMN-24T and TMT1-38, and MDT1-20T and HLT1-8, respectively, represented two conspecific pairs. The 16S rRNA gene sequence identities among the 11 strains ranged from 98.68 to 100% and their closest phylogenetic neighbours were species of the genus Pseudarthrobacter. Phylogenomic analysis based on 81 concatenated core genes placed the 11 strains within the genus Pseudarthrobacter and resolved them into distinct lineages. Pairwise average nucleotide identity values between the novel strains and their closest relatives were 80.10-94.80%, and the corresponding digital DNA-DNA hybridization values were 22.6-59.5%, all below the accepted species delineation thresholds, except for the two conspecific strain pairs TMN-24T/TMT1-38 and MDT1-20T/HLT1-8. The genomic DNA G+C contents of the type strains ranged from 64.6 to 66.9 mol%. Differential phenotypic characteristics further supported their separation from recognized species of the genus. On the basis of the polyphasic taxonomic evidence, nine novel species of the genus Pseudarthrobacter are proposed: Pseudarthrobacter ribosi sp. nov. (type strain HZ3T=CGMCC 1.9263T=NBRC 117320T), Pseudarthrobacter leeuwenhoeki sp. nov. (TMT1-37T=CGMCC 1.9345T=NBRC 117321T), Pseudarthrobacter linnaei sp. nov. (TMS2-18T=CGMCC 1.9408T=NBRC 117322T), Pseudarthrobacter adonitolis sp. nov. (TMN-17T=CGMCC 1.9575T=NBRC 117323T), Pseudarthrobacter kochi sp. nov. (TMN-24T=CGMCC 1.9581T=NBRC 117324T), Pseudarthrobacter woesei sp. nov. (MDT1-20T=CGMCC 1.9798T=NBRC 117325T), Pseudarthrobacter xylosi sp. nov. (MDT3-30T=CGMCC 1.9921T=NBRC 117328T), Pseudarthrobacter lactosi sp. nov. (HLT3-6T=CGMCC 1.10016T=NBRC 117330T) and Pseudarthrobacter arbutini sp. nov. (MDT3-24T=CGMCC 1.9916T=JCM 38166T).
More Related Videos
14:38Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
Published on: April 20, 2012
13:38Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
Published on: October 26, 2019
Related Concept Videos
Hyperthermophilic Bacteria
Diversity of Archaea III
Anoxygenic Phototrophic Bacteria
Diversity of Archaea IV
Diversity of Archaea I
Bacterial Phylum Actinobacteria