Affiliation:
1. Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
2. China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
Abstract
A Gram-stain positive, strictly aerobic, non-motile and rod-shaped strain, NJ-Z5T, was isolated from a soil sample obtained from the Antarctic Peninsula. This strain was taxonomically characterized by a polyphasic approach. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain NJ-Z5T belonged to the genus
Pseudarthrobacter
and showed the highest similarities to
Pseudarthrobacter sulfonivorans
ALLT (98.07%), followed by
Pseudarthrobacter siccitolerans
4J27T (98.00%),
Pseudarthrobacter phenanthrenivorans
Sphe3T (97.93%) and
Pseudarthrobacter psychrotolerans
YJ56T (97.82%). The strain was able to grow at 4–28 °C (optimum, 25 °C), at pH 6.0–8.0 (optimum, pH 7.0) and with 0–1.0% (w/v) NaCl (optimum, 0%). It had catalase activity but no oxidase activity. The chemotaxonomic characteristics of strain NJ-Z5T, which had MK-9 (H2) as its predominant menaquinone and anteiso-C15:0 (58.5%), anteiso-C17:0 (9.9%) and iso-C16:0 (7.0%) as its major fatty acids, were consistent with classification in the genus
Pseudarthrobacter
. The polar lipid profile of strain NJ-Z5T comprised phosphatidylinositol, diphosphatidylglycerol, phosphatidylglycerol, three unidentified glycolipids and two unidentified phospholipids. The genome of strain NJ-Z5T was 4.57 Mbp with a G+C content of 67.1 mol%. Average nucleotide identity (ANI) values between strain NJ-Z5T and other species of the genus
Pseudarthrobacter
were found to be low (ANIm <86%, ANIb <80% and OrthoANIu <80 %). Furthermore, digital DNA–DNA hybridization (dDDH) and average amino acid identity (AAI) values between strain NJ-Z5T and the closely related species ranged from 22.7 to 24.0% and from 75.5 to 77.2%, respectively. On the basis of its differential physiological properties, chemotaxonomic characteristics and low ANI, dDDH and AAI results, strain NJ-Z5T is considered to represent a novel species within the genus
Pseudarthrobacter
, for which the name Pseudarthrobacter albicanus sp. nov. is proposed. The type strain is NJ-Z5T (=CGMCC 1.15636T=KCTC 39722T).
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Subject
General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology
Cited by
4 articles.
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