title: Sporosarcina antarctica sp. nov., a psychrophilic bacterium isolated from the Antarctic.
abstract: A Gram-positive, psychrophilic, rod-shaped bacterium, designated strain N-05(T), was isolated from soil samples collected off King George Island, west Antarctica (6 degrees 13' 31'' S 5 degrees 57' 08'' W). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain N-05(T) was related to members of the genus Sporosarcina and had highest 16S rRNA gene sequence similarity with the type strain of Sporosarcina macmurdoensis (98.0%). The temperature range for growth of strain N-05(T) was 0-23 degrees C, with optimum growth occurring at 17-18 degrees C and approximately pH 6.0-8.0. Strain N-05(T) had MK-7 as the major menaquinone and anteiso-C(15:0) and C(16:1)omega7c alcohol as major fatty acids. The genomic DNA G+C content was 39.2 mol%. On the basis of phenotypic characteristics, phylogenetic analysis and DNA-DNA relatedness data, strain N-05(T) is considered to represent a novel species of the genus Sporosarcina, for which the name Sporosarcina antarctica is proposed. The type strain is N-05(T) (=CGMCC 1.6503(T)=JCM 14646(T)).
authors.affiliation: SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Yu
authors.forename: Yu-Hua
authors.initials: YH
authors.lastname: Xin
authors.forename: Hong-Can
authors.initials: HC
authors.lastname: Liu
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Jun
authors.initials: J
authors.lastname: Sheng
authors.forename: Zhen-Ming
authors.initials: ZM
authors.lastname: Chi
authors.forename: Pei-Jin
authors.initials: PJ
authors.lastname: Zhou
authors.forename: De-Chao
authors.initials: DC
authors.lastname: Zhang