Arthrobacter ardleyensis sp nov, isolated from Antarctic lake sediment and deep-sea sediment

• Main Authors: Chen, M, Xiao, X, Wang, P, Zeng, X, Wang, FP, 陈敏
• Format: Article in Journal/Newspaper
• Language: English
• Published: ARCH MICROBIOL 2005
• Subjects: PERFORMANCE LIQUID-CHROMATOGRAPHY; PSYCHROPHILIC BACTERIA; GENUS ARTHROBACTER; COMB-NOV; RECLASSIFICATION; ADAPTATION; ENZYMES; SOILS; Antarctic; Antarc*
• Online Access: http://dspace.xmu.edu.cn/handle/2288/87872

Three psychrotrophic Arthrobacter strains, isolated from Antarctic lake sediment (An24, An25(T)) 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 A4α 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 An25(T) (CGMCC 1.3685, JCM 12921) was proposed.