Streptomonospora tuzyakensis sp. nov., a halophilic actinomycete isolated from saline soil
Tóm tắt
A novel actinobacterium, designated strain BN506T, was isolated from soil collected from Tuz (Salt) Lake, Konya, Turkey, and was characterised to determine its taxonomic position. The isolate was found to have morphological and chemotaxonomic properties associated with members of the genus Streptomonospora. The isolate was found to grow optimally at 37 °C and in the presence of 10 % (w/v) NaCl but not in the absence of NaCl. Phylogenetic analyses based on an almost-complete 16S rRNA gene sequences indicated that isolate is closely related to members of the genus Streptomonospora and forms a distinct phyletic line in the Streptomonospora phylogenetic tree. Strain BN506T is closely related to Streptomonospora halophila YIM 91355T (98.1 % sequence similarity). Sequence similarities with other type strains of the genus Streptomyces were lower than 98.0 %. The cell wall of the novel strain was found to contain meso-diaminopimelic acid. Whole cell hydrolysates were found to contain galactose, glucose and ribose. The predominant menaquinone was identified as MK-10(H8) (57.0 %). The polar lipids detected were identified as diphosphatidylglycerol, phosphatidylglycerol and phosphatidylcholine. The major fatty acids were found to be anteiso-C17:0, iso-C16:0 and 10 methyl C18:0. Based on 16S rRNA gene sequence analysis, DNA–DNA relatedness, phenotypic characteristics and chemotaxonomic data, strain BN506T was identified as a member of a novel species of the genus Streptomonospora, for which the name Streptomonospora tuzyakensis sp. nov. (type strain BN506T = DSM 45930T = KCTC 29210T) is proposed.
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