Microbes and Environments
Online ISSN : 1347-4405
Print ISSN : 1342-6311
ISSN-L : 1342-6311
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Short Communication
  • Microbial Community Structure of Mesophilic and Low-temperature Partial Nitrification-anammox Reactors: Distribution and Functional Roles of the Core Microbiome
    Mamoru Oshiki, Kohei Takahashi, Seiya Kawasaki, Hyungmin Choi, Jihye P ...
    Article type: Short Communication
    2025 Volume 40 Issue 2 Article ID: ME25001
    Published: 2025
    Released on J-STAGE: April 26, 2025
    DOIhttps://doi.org/10.1264/jsme2.ME25001
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    Microbial community structures in mesophilic and low-temperature anammox and partial nitrification–anammox reactors were exami­ned by a 16S rRNA–gene amplicon sequencing ana­lysis. The anammox bacterium, Jettenia sp., was dominant, and nitrifying bacteria, including Nitrosomonas sp. (aerobic ammonia–oxidizing bacterium) and Nitrospira sp., (nitrite–oxidizing bacterium) coexisted in the bioreactors. Core coexisting bacteria, such as Sulfurisoma sp. and Zeimonas sp., showed oxygen-scavenging and NO3– reduction potentials. Sulfurisoma-related bacteria are distributed across wastewater treatment plants worldwide, particularly in denitrification systems. These results underscore the ecological and functional importance of microbial consortia in enhancing nitrogen removal efficiency.

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