1887

Abstract

A novel actinobacterium, designated strain HNM0687, was isolated from mangrove soil samples collected from Hainan Province, PR China and its polyphasic taxonomy was studied. Based on the results of 16S rRNA gene sequence analysis, strain HNM0687 was closely related to NBRC 16047 (98.7 %), NBRC 16068 (98.2 %), RS15-1S (97.9 %), NBRC 16320 (97.7 %) and AMA 120 (97.7 %). Genome-based comparisons revealed a clear distinction in average nucleotide identity values between strain HNM0687 and its closely related strains (74.4–78.3 %). Strain HNM0687 contained -diaminopimelic acid, arabinose and galactose in whole-cell hydrolysates. Mycolic acid was present. The menaquinones of strain HNM0687 were MK-9(H) and MK-7(H). The phospholipids of the isolate were composed of diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol. The major fatty acids were C, C 7/C 6, C10-methyl (TBSA), C and C 9. Based on its genotypic, chemotaxonomic and phenotypic characteristics, it is concluded that strain HNM0687 represents a novel species of the genus for which the name sp. nov. is proposed. The type strain is HNM0687 (=CCTCC AA 2019074 =KCTC 49383 ).

Funding
This study was supported by the:
  • Xiaolong Huang , High education teaching and reform research fund program of Hainan province , (Award Hnjg2017ZD-3)
  • Xiaolong Huang , High-level talent grant of basic and applied basic research project (natural science) of Hainan province in 2019 , (Award 2019RC069)
  • Shuangqing Zhou , High-level talent grant of basic and applied basic research project (natural science) of Hainan province in 2019 , (Award 2019RC133)
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2020-07-15
2020-12-01
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