원문정보
초록
영어
Gram-negative, facultatively aerobic, short rod-shaped marine bacterial strains HTCC2662T and
HTCC2663, isolated from the Sargasso Sea by using a dilution-to-extinction culturing method, were investigated in a taxonomic study. Characterization of the two strains by phenotypic and
phylogenetic analyses revealed that they belonged to the same species. The DNA G+C content of
strain HTCC2662T was 58.4 mol% and the major fatty acids was C18:1 ω7c (52.5 %). Phylogenetic
analysis of the 16S rRNA gene sequences showed that the strains represented a distinct line of
descent within the genus Ruegeria, with highest sequence similarities to Ruegeria atlantica DSM
5823T (97.2 %), Ruegeria lacuscaerulensis DSM 11314T (96.5 %) and Ruegeria pomeroyi DSM
15171T (95.6 %). Several phenotypic characteristics including facultatively requiring NaCl and
oxygen for growth, together with the fatty acid composition, differentiated strain HTCC2662T from
other members of the genus Ruegeria. Based on phenotypic, chemotaxonomic and phylogenetic
traits, it is proposed that strain HTCC2662T represents a novel species of the genus Ruegeria with
the name Ruegeria pelagia sp. nov. The type strain is HTCC2662T.