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  • Title: Halostreptopolyspora alba gen. nov., sp. nov., a halophilic actinobacterium isolated from saline soil of Xinjiang, Northwest of China.
    Author: Li R, Tang XJ, Feng YZ, Ji Y, Wang Y, Miao CP, Tang M, Wang KK, Chunyu WX, Zhao LX, Tang SK.
    Journal: Int J Syst Evol Microbiol; 2024 Oct; 74(10):. PubMed ID: 39365649.
    Abstract:
    A Gram-stain-positive, aerobic, moderate halophilic actinobacterium, designated strain YIM 96095T, was isolated from a saline soil sample collected from Aiding Lake, Xinjiang, North-western China. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate belonged to the family Nocardiopsidaceae, formed a distinct subclade, and was most closely related to Lipingzhangella halophila DSM 102030T and Allosalinactinospora lopnorensis DSM 45697T with sequence identity values of 95.8 and 95.1%, respectively. Optimal growth occurred at 37 °C, pH 7.0-8.0 and with 5-16% (w/v) NaCl, with well-developed, non-fragmented substrate mycelia and single-, double-, or triple-wrinkled spore(s) on the mature aerial hyphae. The chemical analysis presented meso-diaminopimelic acid as the diagnostic diamino acid of the cell-wall peptidoglycan, and glucose, galactose and rhamnose as the major whole-cell sugars, and iso-C15 : 0 and anteiso-C15 : 0 as the major fatty acids. The phospholipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, unidentified phospholipids and unidentified glycolipid. The menaquinones were MK-10(H8), MK-10(H6) and MK-9(H10). Its G+C content was 69.7 mol% in the determined genome sequence. Based on phenotypic, chemotaxonomic and phylogenetic characteristics, a novel genus and species named Halostreptopolyspora alba gen. nov., sp. nov. is proposed for isolate YIM 96095T (=KCTC 49266T=CGMCC 4.7636T).
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