Marinobacter antarcticus sp. nov., a halotolerant bacterium isolated from Antarctic intertidal sandy sediment

• DOI: 10.1099/ijs.0.035774-0
• Publication Date: 2011-10-08T03:50:21Z
• Authors: Chang Liu; Chun-Xiao Chen; Xi-Ying Zhang; Yong Yu; Ang Liu; Guo-Wei Li; Xiu-Lan Chen; Bo Chen; Bai-Cheng Zhou; Yu-Zhong Zhang
• Keywords: Strain (injury)

A Gram-staining-negative, aerobic, motile, oxidase- and catalase-positive, rod-shaped strain, designated ZS2-30(T), was isolated from Antarctic intertidal sandy sediment. The strain grew at 4-35 °C (optimum, 25 °C) in 0-25% (w/v) NaCl 3.0-4.0%). It could reduce nitrate to nitrite hydrolyse Tween 80. predominant cellular fatty acids of ZS2-30(T) were summed feature 3 (C(16:1)ω7c and/or C(16:1)ω6c), C(16:0), C(18:1)ω9c, C(16:1)ω9c, C(12:0) 3-OH C(12:0). major polar lipids phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol an unidentified aminophospholipid. genomic DNA G+C content 55.8 mol%. Analyses 16S rRNA gene sequences revealed that affiliated with the genus Marinobacter. showed highest sequence similarities type strains three species Marinobacter, namely Marinobacter maritimus (98.3%), psychrophilus (98.1%) goseongensis (97.1%), but DNA-DNA relatedness values between above all lower than 45%. Moreover, be distinguished closely related by various phenotypic properties. Based on this taxonomic study using a polyphasic approach, is considered represent novel for which name antarcticus sp. nov. proposed. ( = CGMCC 1.10835(T) KCTC 23684(T)).