Abstract
A novel bacterial strain, designated N60AT, was isolated from sediment soil of crater lake, Baekrokdam, Hallasan, Jeju, Republic of Korea. Cells of N60AT were Gram-reaction-negative, oxidase- and catalase-positive, non-motile rods and formed transparent white colonies on ten-fold diluted R2A agar. N60AT contained summed feature 3 (C16 : 1ω7c/C16 : 1ω6c), iso-C15 : 0 and iso-C17 : 0 3-OH as the major fatty acids and MK-7 as the predominant isoprenoid quinone. It contained phosphatidylethanolamine as the predominant polar lipid. The DNA G+C content was 44.4 mol%. Phylogenetic analysis based on 16S rRNA gene sequencing revealed that N60AT formed a separate lineage in the genus Mucilaginibacter and that it was most closely related to Mucilaginibacter frigoritolerans FT22T (96.5 % sequence similarity). Phenotypic, chemotaxonomic and phylogenetic characteristics supported the conclusion that N60AT represents a novel species of the genus Mucilaginibacter, for which the name Mucilaginibacter craterilacus sp. nov. is proposed. The type strain is N60AT (=KCTC 52404T=NRRL B-65396T).
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