1887

Abstract

Two rod-shaped and Gram-stain-positive bacteria (strains C64 and C62) were isolated in 2020 from faeces of greater white-fronted geese () from Poyang Lake, PR China. Their optimal growth conditions were at 37 °C, pH 7.0 and with 0.5 % (w/v) NaCl. The two isolates showed a highest 16S rRNA gene sequence similarity to DSM 19116 (92.1 %). Phylogenetic/phylogenomic analyses indicated that strains C64 and C62 clustered independently in the vicinity of the genera , and within the family , but could not be classified clearly as members of any of these known genera. The average amino acid identity values between our isolates and available genomes of members of the family were around the genus threshold value (45–65 %). The major cellular fatty acids of the strains were Cω and C. The predominant polar lipids were phosphatidylinositol, phosphatidylglycerol, phosphatidylcholine, diacylglycerol, triacylglycerol and cardiolipin. The amino acid composition of peptidoglycan contained alanine, glutamic acid and glycine. The major respiratory menaquinones were MK-8(H) and MK-9(H). The whole cell sugars included galactose, arabinose and glucose. On the basis of the results of the 16S rRNA gene sequences comparison, whole-genome phylogenomic analysis, phenotypic and chemotaxonomic characteristics, we propose that strains C64 and C62 represent a novel species belonging to a novel genus within the family , for which the name gen. nov., sp. nov. is proposed. The type strain is C64 (=CGMCC 1.18410=GDMCC 1.1969=KCTC 49511=KACC 22143).

Funding
This study was supported by the:
  • National Science Technology Major Project (Award 2018ZX10201001-006)
    • Principle Award Recipient: YanwenXiong
  • National Science Technology Major Project (Award 2018ZX10301407-002)
    • Principle Award Recipient: YanwenXiong
  • National Major Science and Technology Projects of China (Award 20201BBG71010)
    • Principle Award Recipient: ShengenChen
  • Independent Research Project of State Key Laboratory of Infectious Disease Prevention and Control (Award 2019SKLID311)
    • Principle Award Recipient: ShengenChen
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2021-08-25
2022-10-03
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