Abstract
Mu Us Sandy Land in China is a very fragile ecological environment due to serious desertification. While attempting to gain insights into the biodiversity of biological soil crusts of Mu Us Sandy Land, a novel bacterial strain, SLN-3T, was isolated. It was phylogenetically placed into the genus Arthrobacter within the family Micrococcaceae based on its 16S rRNA gene sequence. The most closely related species were Arthrobacter ruber MDB1-42T (98.6%) and Arthrobacter agilis DSM 20550T (98.3%). Cells of the novel species were Gram-stain-positive, aerobic, and non-endospore-forming. The values of average nucleotide identity and the digital DNA-DNA hybridization between SLN-3T and MDB1-42T were 84.9% and 21.3%, respectively. The draft genome size of strain SLN-3T was 3.67 Mb, and its genomic G+C content was 68.1%. The predominant cellular fatty acids were anteiso-C15:0 and C17:0 anteiso. Glucose, galactose, and ribose were the whole-cell sugars. The polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, glycolipid, and phospholipid. The peptidoglycan contained lysine, glutamic acid, and alanine. The predominant menaquinone was MK-9(H2). Based on the data from the chemotaxonomic, phylogenetic, and phenotypic evidence, a novel species named Arthrobacter crusticola sp. nov is proposed, whose type strain is SLN-3T (= ACCC 61595T = JCM 33723T).
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This work was supported by the State Key Research and Development Program of China (2016YFC0500801). National Natural Science Foundation of China (31800522).
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LL conceived the study, participated in its design, and coordinated and drafted the manuscript; LL, SH, LX, MC and SS participated in the design and coordination of the study and performed the measurement; XZ and LL conceived the study, participated in its design, and coordinated and drafted the manuscript. All authors read and approved the final manuscript.
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Liu, L., Liang, L., He, S. et al. Arthrobacter crusticola sp. nov., Isolated from Biological Soil Crusts in the Mu Us Sandy Land, China. Curr Microbiol 77, 2042–2048 (2020). https://doi.org/10.1007/s00284-020-02070-8
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DOI: https://doi.org/10.1007/s00284-020-02070-8