Abstract
An actinomycete strain, designated strain SH2-13(T), was isolated from a marine sediment sample collected from the Andaman Sea of Thailand. Applying a polyphasic approach, the isolate was identified as a member of the genus Micromonospora using morphological and chemotaxonomic characteristics, including the presence of meso-diaminopimelic acid in the peptidoglycan. Whole-cell sugars were arabinose, galactose, glucose, rhamnose, ribose and xylose. Diagnostic polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol, phosphatidylinositol mannosides and phosphoglycolipids. The major menaquinones were MK-10(H(2)), MK-10(H(4)) and MK-10(H(6)). 16S rRNA gene sequence analysis revealed similarity to Micromonospora marina JSM1-1(T) (99.1 %), Micromonospora coxensis 2-30-b(28)(T) (99.1 %), Micromonospora aurantiaca DSM 43813(T) (98.8 %) and Micromonospora chalcea DSM 43026(T) (98.7 %). However, a combination of DNA-DNA hybridization results and phenotypic properties indicated that strain SH2-13(T) ( = NBRC 107934(T) = BCC 45601(T)) should be classified as the type strain of a novel species, with the proposed name Micromonospora sediminicola sp. nov.
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