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Title 

Psychrobacter aquimaris sp. nov. and Psychrobacter namhaensis sp. nov., isolated from sea water of the South Sea in Korea

Authors 

Jung-Hoon YoonChoong Hwan LeeS H YeoTae Kwang Oh

Publisher 

Society for General Microbiology

Issue Date 

2005

Citation 

International Journal of Systematic and Evolutionary Microbiology, vol. 55, no. 3, pp. 1007-1013

Keywords 

sea waterKoreapsychrobacterpsychrobacter aquimarispsychrobacter namhaensisspecies differenceseawaterwater microbiology

Abstract 

Two Gram-negative, non-motile, non-spore-forming, slightly halophilic bacterial strains, SW-210T and SW-242T, were isolated from sea water of the South Sea in Korea, and were characterized taxonomically by means of a polyphasic approach. The two isolates grew optimally at 25-30 °C and in the presence of 2-3 % (w/v) NaCl. Strains SW-210T and SW-242T contained Q-8 as the predominant respiratory lipoquinone and C18:1ω9c as the major fatty acid. The DNA G+C contents of strains SW-210T and SW-242T were 43.2 and 45.3 mol%, respectively. The 16S rRNA gene sequences of strains SW-210T and SW-242T were 98.9 % similar, and the mean DNA-DNA relatedness value between them was 24 %. Phylogenetic analysis based on 16S rRNA gene sequences showed that strains SW-210T and SW-242T form distinct phylogenetic lineages within the radiation of the cluster comprising Psychrobacter species, havinq 16S rRNA gene sequence similarity levels of 95.9-99.2 % with respect to the type strains of Psychrobacter species. The levels of DNA-DNA relatedness between the two isolates and the type strains of 15 phylogenetically related Psychrobacter species were well below 70 %. On the basis of phenotypic and phylogenetic data and genomic distinctiveness, strains SW-210T and SW-242T were classified in the genus Psychrobacter as representing two distinct novel species, for which the names Psychrobacter aquimaris sp. nov. (type strain, SW-210T=KCTC 12254T=DSM 16329T) and Psychrobacter namhaensis sp. nov. (type strain, SW-242T=KCTC 12255T=DSM 16330T) are proposed, respectively.

ISSN 

1466-5026

Link 

http://dx.doi.org/10.1099/ijs.0.63464-0

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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