An actinomycete strain, AM105, that produces rifamycin, was isolated from mangrove sediment samples collected from the South China Sea. The strain showed closest 16S rRNA gene sequence similarity to (98.0 %). Chemotaxonomic characteristics of the isolate coincided with members of the genus . The value of DNA–DNA relatedness to (53.6 %) and phenotypic differences from phylogenetically related species indicated that this isolate belongs to a novel species, for which the name sp. nov. is proposed. The type strain is AM105 (=CGMCC 4.2495=DSM 44983).


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