文摘
Two Gram-stain negative, rod-shaped and motile extreme halophiles, designated CBA1107T and CBA1108, were isolated from non-purified solar salt. Based on the phylogenetic analysis, strains CBA1107T and CBA1108 were shown to belong to the genus Halolamina, with similarities for the 16S rRNA gene sequences between strains CBA1107T and Halolamina pelagica TBN21T , Halolamina salina WSY15-H3T and Halolamina salifodinae WSY15-H1T of 98.3, 97.6 and 97.3?%, respectively; the similarities for the rpoB-gene sequences between the same strains were 96.0, 95.3 and 94.6?%, respectively. The colonies of both strains were observed to be red pigmented on growth medium. Strain CBA1107T was observed to grow at 20-0?°C, in the presence of 15-0?% NaCl, at pH 6.0-.0, and with 0.005-.5?M?Mg2+. The cells of both strains lysed in distilled water. The DNA–DNA hybridization experiments showed that strain CBA1107T shared 97?% relatedness with CBA1108 and <50?% relatedness with H. pelagica JCM 16809T, H. salina JCM 18549T and H. salifodinae JCM 18548T. The genomic DNA G+C content of strain CBA1107T was determined to be 65.1?mol%. The major polar lipids of the two strains were phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester, phosphatidylglycerol sulfate and glycolipids including sulfated mannosyl glucosyl diether and mannosyl glucosyl diether. Based on the polyphasic taxonomic analyses, the strains are considered to represent a new taxon for which the name Halolamina rubra sp. nov. is proposed, with the type strain CBA1107T (=CECT 8421T =JCM 19436T).