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Abstract
A Gram-stain-negative, facultatively anaerobic coccobacilli approximately 0.4–0.5×0.5–1.1 µm, non-motile, orange-pigmented bacterial strain, designated am2T, was isolated from the coastal area of Weihai, PR China (121° 57′ E, 37° 29′ N). The temperature, pH and NaCl ranges for growth were 4–40 °C, pH 6.5–8.5 and 0.0–6.0 % (w/v) NaCl. The results of phylogenetic analyses based on 16S rRNA gene sequences revealed that am2T was phylogenetically related to members of the genus Algoriphagus and was closely related to Algoriphagus boritolerans , Algoriphagus namhaensis and Algoriphagus antarcticus with 96.4, 96.2 and 95.8 % sequence similarities, respectively. The quinone system contained menaquinone MK-7 as the predominant component. The dominant fatty acids were iso-C17 : 1ω9c,iso-C16 : 1H and iso-C15 : 0. The major polar lipids consisted of one phospholipid, phosphatidylethanolamine and six unknown lipids. The DNA G+C content was 40.6 mol%. On the basis of morphological, physiological and molecular properties as well as on phylogenetic distinctiveness, am2T should be placed into the genus Algoriphagus as a novel species, for which the name Algoriphagus marinus sp. nov. is proposed. The type strain is am2T (=KCTC 52549T=MCCC 1H00178T).
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