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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 71, Issue 8

gen. nov., sp. nov., a novel anaerobic and aerobic denitrifying betaproteobacterium and reclassification of as comb. nov. Free

Abstract

Denitrification is a vital link in the global bio-nitrogen cycle. Here, we isolated a strain (M9-3-2) that is a novel benzo[a]pyrene (BaP)-tolerant, anaerobic and aerobic denitrifying bacterium from a continuous BaP-enrichment cultured mangrove sediment. comparative genomics and taxonomic analysis clearly revealed that strain M9-3-2 (=MCCC 1K03313=JCM 32045) represents a novel species of a novel genus named as gen. nov., sp. nov., belonging to family , order . In addition, the species is transferred into genus and named comb. nov. The predominant respiratory quinone of strain M9-3-2 was ubiquinone-8 and the major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, three unidentified phospholipids and three unidentified aminophospholipids. In this study, the capacity of strain M9-3-2 to eliminate nitrate was detected under anaerobic and aerobic conditions, and the removal rates of nitrate were 6.1×10 µg N/l/h/cell and 3×10 µg N/l/h/cell, respectively. Our results suggested that strain M9-3-2 could play an important role in the nitrogen removal regardless of the presence of oxygen in natural or/and man-made ecosystems.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Aerobic denitrification , Benzo[a]pyrene-enrichment , Nitrogeniibacter mangrovi gen. nov., sp. nov. , phylogenomic tree and Zoogloeaceae
Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 41976141)
    • Principle Award Recipient: YunTian
© 2021 The Authors
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2021-08-09
2025-05-17
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Nitrogeniibacter mangrovi gen. nov., sp. nov., a novel anaerobic and aerobic denitrifying betaproteobacterium and reclassification of Azoarcus pumilus as Aromatoleum pumilum comb. nov.
Int J Syst Evol Microbiol 71, 004946 (2021); https://doi.org/10.1099/ijsem.0.004946
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