%0 Journal Article %A Zhang, Yi %A Li, Jie %A Tian, Xinpeng %A Zhang, Si %T Marinithermofilum abyssi gen. nov., sp. nov. and Desmospora profundinema sp. nov., isolated from a deep-sea sediment, and emended description of the genus DesmosporaYassin et al. 2009 %D 2015 %J International Journal of Systematic and Evolutionary Microbiology, %V 65 %N Pt_8 %P 2622-2629 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.000314 %I Microbiology Society, %X Two novel filamentous bacteria, strains SCSIO 11157T and SCSIO 11154T, were isolated from a deep-sea sediment sample. Strain SCSIO 11157T grew optimally at 55–60 °C, while strain SCSIO 11154T grew optimally at 40 °C. Both strains produced aerial and substrate mycelia. Phylogenetic analysis of the 16S rRNA gene sequences of strains SCSIO 11157T and SCSIO 11154T showed that the isolates were affiliated to the family Thermoactinomycetaceae. The two isolates contained ll-diaminopimelic acid as the cell-wall diamino acid, and did not have diagnostic sugars. The major polar lipids of strain SCSIO 11157T were diphosphatidylglycerol, phosphatidylmethylethanolamine, phosphatidylethanolamine and phosphatidylglycerol, and the major polar lipids of SCSIO 11154T were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The predominant menaquinone of both strains was MK-7. The major cellular fatty acids of strain SCSIO 11157T were iso-C15 : 0, C18 : 1ω9c and iso-C17 : 0, and strain SCSIO 11154T contained iso-C15 : 0 and iso-C17 : 0 as major fatty acids. The DNA G+C contents of strains SCSIO 11157T and SCSIO 11154T were 54.2 and 51.8 mol %, respectively. On the basis of its phenotypic and phylogenetic properties, strain SCSIO 11157T represents a novel species in the new genus, for which we propose the name Marinithermofilum abyssi gen. nov., sp. nov. The type strain of Marinithermofilum abyssi is SCSIO 11157T ( = CGMCC 1.15179T = NBRC 109939T). Strain SCSIO 11154T represents a novel species of the genus Desmospora, for which we propose the name Desmospora profundinema sp. nov. The type strain is SCSIO 11154T ( = DSM 45903T = NBRC 109626T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.000314