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Volume 72, Issue 6

gen. nov., sp. nov., a new member of the family isolated from saline-alkali soil No Access

Abstract

A Gram-stain-positive, aerobic actinobacterium, designated strain NEAU-24, was isolated from saline-alkali soil collected from Daqing City, Heilongjiang Province, PR China. Strain NEAU-24 was found to produce abundant substrate mycelia but no aerial hyphae. The substrate mycelia formed irregular pseudosporangia consisting of nuciform spores, and the surface of the spores was smooth. 16S rRNA gene sequence analysis showed that strain NEAU-24 clustered with 3-44-a(19), subsp. DSM 44103 and subsp. DSM 43634 within the family and was most closely related to 3-44-a(19) (99.17 %). The strain contained -diaminopimelic acid as the cell-wall diamino acid and MK-9(H) as the menaquinone. The whole cell sugar profile consisted of glucose, galactose, xylose and arabinose. The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, an unidentified phospholipid, phosphatidylinositol and an unidentified lipid. The major fatty acids were summarized as C, C, C, iso-C and iso-C. The low digital DNA–DNA hybridization and average nucleotide identity values could differentiate strain NEAU-24 from its related type strains. The phenotypic, genetic and chemotaxonomic data also indicated that strain NEAU-24 occupied a branch separated from those of known genera in the family . In addition, genomic analysis confirmed that strain NEAU-24 had the potential to produce chitinase. Therefore, strain NEAU-24 represents a novel species of a new genus and species in the family , for which the name gen. nov., sp. nov. is proposed. The type strain of is NEAU-24 (=CCTCC AA 2020016=JCM 33973).

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Keyword(s): 16S rRNA gene , genome , Nucisporomicrobium flavum gen. nov., sp. nov. , polyphasic approach and saline-alkali soil
Funding
This study was supported by the:
  • the National Natural Science Foundation of China (Award 31972291)
    • Principle Award Recipient: XiangjingWang
© 2022 The Authors
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2024-04-29
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Nucisporomicrobium flavum gen. nov., sp. nov., a new member of the family Micromonosporaceae isolated from saline-alkali soil
Int J Syst Evol Microbiol 72, 005421 (2022); https://doi.org/10.1099/ijsem.0.005421
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