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  • Title: Asanoa siamensis sp. nov., isolated from soil from a temperate peat swamp forest.
    Author: Niemhom N, Suriyachadkun C, Tamura T, Thawai C.
    Journal: Int J Syst Evol Microbiol; 2013 Jan; 63(Pt 1):66-71. PubMed ID: 22328605.
    Abstract:
    A novel actinomycete strain, PS7-2(T), which produced spore chains borne on the tips of short sporophores, was isolated from soil collected from a temperate peat swamp forest in Phu-Sang National Park, Phayao province, Thailand. The isolate contained glutamic acid, glycine, alanine, 3-hydroxy-diaminopimelic acid and meso-diaminopimelic acid in the cell-wall peptidoglycan. The whole-cell sugars were glucose, mannose, rhamnose and xylose, and the major phospholipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and phosphatidylethanolamine. The predominant menaquinones were MK-10(H(8)) and MK-9(H(8)) and the predominant cellular fatty acids were iso-C(15 : 0), anteiso-C(15 : 0) and anteiso-C(17 : 0). The G+C content of the genomic DNA was 72.3 mol%. On the basis of 16S rRNA gene sequence analysis, strain PS7-2(T) clustered with members of the genus Asanoa and appeared most closely related to the type strains of Asanoa hainanensis (99.5 % sequence similarity), Asanoa iriomotensis (99.0 %), Asanoa ishikariensis (98.9 %) and Asanoa ferruginea (98.5 %). DNA-DNA hybridizations and some physiological and biochemical properties indicated that strain PS7-2(T) could be readily distinguished from its closest phylogenetic relatives. Based on the phenotypic and genotypic evidence and DNA-DNA relatedness values, strain PS7-2(T) represents a novel species in the genus Asanoa, for which the name Asanoa siamensis sp. nov. is proposed; the type strain is PS7-2(T) (=BCC 41921(T) =NBRC 107932(T)).
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