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Abstract

A Gram-positive filamentous bacterial strain that developed large campanulate sporangia at the ends of sporangiophores on substrate mycelium was isolated from bamboo forest soil in Thailand. According to the results of a polyphasic taxonomic study, our isolate had typical characteristics of members of the genus . The 16S rRNA gene sequence analysis also indicated that strain A-T 6646 belonged to the genus , being most closely related to DSM 43865 (97.61 %) and NBRC 14524 (97.52 %). The DNA–DNA relatedness values, which differentiate the new strain from the most closely related species, were significantly below 70 %. The cell-wall peptidoglycan contained -diaminopimelic acid. The whole-cell sugars contained xylose and arabinose. The predominant menaquinone was MK-9(H). The diagnostic phospholipids were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol and phosphatidylinositol. The predominant cellular fatty acids were iso-C, anteiso-C, iso-C and anteiso-C. Following an evaluation of phenotypic, chemotaxonomic and genotypic studies, the isolate is proposed to represent a novel species to be named sp. nov. The type strain is A-T 6646 ( = BCC 46194 = NBRC 109076).

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2013-08-01
2024-04-26
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