1887

Abstract

Eleven psychrophilic bacteria isolated from Antarctic coastal marine environments were subjected to a polyphasic taxonomic study. The isolates were oxidase-positive, halotolerant, Gram-negative, non-motile coccobacilli with a strictly oxidative metabolism. The DNA G+C content ranged from 44 to 47 mol%. DNA–DNA hybridization experiments showed six homology groups, two of them related at the species level to the type strain of , LMG 7203 (70–83 %). The highest DNA relatedness of two other groups to known species was found to the type strain of , LMG 21282 (51–57 %), and no significant similarity was found between type strains and the last two groups. The predominant cellular fatty acids detected were typical of the genus and included 18 : 19, 16 : 17 and 17 : 18. 16S rRNA gene sequence analysis confirmed that the strains isolated belonged to the genus . The results of the study assigned five isolates to , three isolates to and three isolates to novel species. The names sp. nov. (type strain NF11=LMG 21276= CECT 5885) and sp. nov. (type strain NF23=LMG 21280 =CECT 5889) are proposed for these organisms.

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2003-07-01
2020-06-04
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