1887

Abstract

A taxonomic study was carried out on strain CY1, which is a novel bacterium isolated from wastewater sludge of a melamine-producing factory in Sanming city, Fujian, China. Strain CY1 was shown to rapidly and completely degrade melamine to NH and CO under aerobic conditions. The isolate was Gram-stain-negative, short-rod-shaped and motile by one unipolar flagellum. Growth was observed at salinities from 0 to 7 % NaCl (optimum, 0.1 %), at temperatures from 15 to 50 °C (optimum, 40–45 °C) and at pH 7–9.5 (optimum pH 9.5). Quinone-8 was detected as the major respiratory quinone. 16S rRNA gene sequence comparisons showed that strain CY1 was affiliated to the family in the class . It was most closely related to members of the genera (95.5 %), (94.6–95.1 %), (92.9–95.4 %), (93.0–93.6 %) and (92.6–93.9 %). The average nucleotide identity (ANI) values between strain CY1 and those representing related genera ranged from 84.0 to 86.1 % using Mummer, and from 74.9 to 81.1 % using . The dominant fatty acids were Cω7 and/or Cω6, C, C 3-OH and Cω7 and/or Cω6, and the major polar lipids consisted of phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, one unidentified phospholipid and one unidentified aminophospholipid. The G+C content of the chromosomal DNA was 69.5 mol%. On the basis of the phenotypic and phylogenetic data, strain CY1 represents a novel species of a new genus, for which the name gen. nov., sp. nov. is proposed. The type strain of is CY1 ( = CCTCC AB 2012024 = DSM 26006).

Funding
This study was supported by the:
  • Chinese Academy of Sciences
  • Technology Foundation for Selected Overseas Chinese Scholar of MOHRSS, China
  • China-EU Science & Technology Cooperation Program (Award 2011DFA101222)
  • Science and Technology Planning Project of Xiamen, China (Award 3502Z20120012 and 3502Z20102017)
  • CAS/SAFEA International Partnership Program for Creative Research Teams (Award KZCX2-YW-T08)
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2014-06-01
2024-03-29
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