<Emphasis Type="Italic">Arthrobacter ardleyensis</Emphasis> sp. nov., isolated from Antarctic lake sediment and deep-sea sediment |
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| Authors: | M?Chen X?Xiao P?Wang X?Zeng Email author" target="_blank">Fengping?WangEmail author |
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| Institution: | (1) School of Life Science, Xiamen University, Xiamen, P.R. China;(2) Key Laboratory of Marine Biogenetic Resources State Oceanic Administration, Third Institute of Oceanography, Xiamen, P.R. China |
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| Abstract: | Three psychrotrophic Arthrobacter strains, isolated from Antarctic lake sediment (An24, An25T) and deep-sea sediment (ZX6) were studied. Their 16S rRNA gene sequences showed highest similarities (97.0–97.9%) with those of A. nicotianae and A. protophormiae. All three strains underwent rod–coccus morphological change, had high mol% G+C content, were aerobic to slightly anaerobic, and grew between 0°C and 30°C, with optimal growth temperature around 25°C. The cell wall peptidoglycan was A4 variant. DNA–DNA hybridization, physiological and chemotaxonomic studies indicated that these three strains constituted a new homogeneous genomic species within the genus Arthrobacter, for which the name Arthrobacter ardleyensis, with the type strain An25T (CGMCC 1.3685, JCM 12921) was proposed.M. Chen and X. Xiao contributed equally to this paper. |
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| Keywords: | Antarctica Arthrobacter ardleyensis Cell wall Deep-sea DNA– DNA hybridization Mol% G+C content |
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