1887

Abstract

An aerobic, non-motile actinobacterium, strain QAIII60, was isolated from virgin forest soil of Kanas Nature Reserve, Xinjiang, north-west China. The isolate produced a very scant aerial mycelium that fragmented into cylindrical spores and a non-fragmented substrate mycelium with occasional septa. Whole-cell hydrolysates contained -diaminopimelic acid, arabinose, galactose, glucose, ribose and rhamnose (trace). The diagnostic polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, hydroxyphosphatidylethanolamine and ninhydrin-positive phosphoglycolipids. The major cellular fatty acids were iso-C, iso-C, iso-C H and Cω6. The isoprenoid quinones consisted of MK-9(H) and MK-10(H). The G+C content of the genomic DNA was 72.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain QAIII60 formed a distinct phyletic line that was most closely, albeit loosely, associated with the genus . A number of physiological characteristics differentiated the isolate from members of the genus . On the basis of these data, we propose that strain QAIII60 ( = CGMCC 4.4663  = NBRC 106673) be assigned as the type strain of a novel species, sp. nov.

Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 30770002)
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2011-12-01
2024-04-26
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