Abstract
A novel Gram-stain-positive, non motile endophytic actinomycete, designated strain BR3-1T, which produced spore chains borne on the tip of short sporophores was isolated from the rhizome of Boesenbergia rotunda collected from Udon Thani province, Thailand. This strain was investigated for its taxonomic position using polyphasic approach. The strain contained 3-hydroxy-diaminopimelic acid and meso-diaminopimelic acid in the cell-wall peptidoglycan. The whole-cell sugars contained glucose, mannose, rhamnose, ribose and xylose. Phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol and phosphatidylinositol mannosides were found as the characteristic phospholipids. The predominant menaquinones were MK-10(H8) and MK-10(H6). The major cellular fatty acids were iso-C16:0, iso-C15:0 and anteiso-C15:0. The G+C content of the genomic DNA was 71.4 mol%. On the basis of 16S rRNA gene sequences analysis revealed that strain BR3-1T belonged to the genus Asanoa and was most closely related to Asanoa ishikariensis (99.39%), Asanoa iriomotensis (99.31%), Asanoa siamensis (99.17%), Asanoa ferruginea (98.84%) and Asanoa hainanensis (98.71%). The DNA-DNA relatedness value between the strain BR3-1T and its phyl...Continue Reading
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