Nonomuraea cypriaca sp. nov., isolated from soil

Nonomuraea sediminis sp. nov., a novel actinobacterium with antimicrobial activity, isolated from sediment of Dianchi Lake

A novel actinobacterium with antimicrobial activity, designated strain H16431^T, was isolated from a sediment sample collected from Dianchi Lake, Yunnan Province, PR China. Phylogenetic analysis based on 16S rRNA gene sequence indicated that strain H16431^T was most closely related to Nonomuraea rhizosphaerae CGMCC 4.7431^T and Nonomuraea guangzhouensis CGMCC 4.7101^T (98.1% similarity), but formed a monophyletic clade with Nonomuraea ceibae KCTC 39826^T (98.0% similarity). Phylogenomic analysis based on whole-genome sequence showed that strain H16431^T formed a separate clade within the genus Nonomuraea. The average nucleotide identity, average amino acid identity, and digital DNA-DNA hybridization values between strain H16431^T and its closely related Nonomuraea species were 80.0-81.5%, 71.2-74.6%, and 23.2-25.0%, respectively, which were significantly lower than the widely accepted species-defined threshold. The DNA G + C content was 70.2% based on the whole-genome sequence. The menaquinones were identified as MK-9(H₄), MK-9(H₆), and MK-9(H₂). The major fatty acids were iso-C_16:0, 10 methyl-C_17:0, and iso-C_16:0 2OH. The phospholipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, hydroxy-phosphatidylethanolamine, and phosphatidylinositol. These chemotaxonomic characteristics were corresponded to those of the genus Nonomuraea. On the basis of the taxonomic evidence, strain H16431^T represents a novel species of the genus Nonomuraea, for which the name Nonomuraea sediminis sp. nov. is proposed. The type strain is H16431^T (=JCM 34852^T=CICC 25119^T).