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Relationship assessment of microbial community and cometabolic consumption of 2-chlorophenol.

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Title: Relationship assessment of microbial community and cometabolic consumption of 2-chlorophenol.
Authors: Martínez-Jardines, Miguel1,2 (AUTHOR), Oltehua-López, Omar1 (AUTHOR), Martínez-Hernández, Sergio2 (AUTHOR), Texier, Anne-Claire1 (AUTHOR), de María Cuervo-López, Flor1 (AUTHOR) fmcl@xanum.uam.mx
Source: Applied Microbiology & Biotechnology. 1/24/2025, Vol. 109 Issue 1, p1-12. 12p.
Subjects: Heterotrophic bacteria, Batch reactors, Life sciences, Population dynamics, Microbial communities
Abstract: The relationship of microbial community and cometabolic consumption of 2-chlorophenol (2-CP) in a nitrifying sequencing batch reactor (SBR) was studied. The assessment of the population dynamics of the nitrifying sludge during the cometabolic 2-CP consumption with increasing ammonium (NH4+) concentrations in the SBR showed the presence of 39 different species of which 10 were always present in all cycles. Fifty-five percent of the species found were grouped as Proteobacteria (45% as β-proteobacteria and 10% as γ-proteobacteria class), 30% as Acidobacteria, and 15% as Deinococcus-Thermus phyla. NH4+ and cometabolic 2-CP consumption could be related to the presence and permanence of ammonium-oxidizing bacteria (AOB) species and heterotrophic bacteria, while the complete nitrification to the presence of nitrite-oxidizing bacteria (NOB) species. A correlation analysis showed that the complete and stable nitrifying performance (NH4+ consumption efficiencies (ENH4+-N) > 99% and nitrate production yields (YNO3−-N) between 0.93 and 0.99), as well as the increase in specific rates (ammonium (qNH4+-N) and 2-CP (q2-CP-C) consumption and nitrate production (qNO3−-N)), was associated with the homogeneity of the bacterial community (J index = 0.99). The increase in the proportion of individuals of AOB species such as Nitrosomonas oligotropha and Nitrosomonas marina was associated with the increase in qNH4+-N (r ≥ 0.69) and q2-CP-C (r ≥ 0.64) and, therefore, with the 2-CP cometabolic consumption in the SBR. Finally, the increase in the proportion of individuals of heterotrophic species such as Dokdonella ginsengisoli, Deinococcus peraridilitoris, Truepera radiovictrix, and Stenotrophobacter terrae was associated with the increase in q2-CP-C (r ≥ 0.59). Key points: • Thirty-nine bacterial species were identified in the nitrifying sludge population of the SBR. • β-Proteobacteria and Acidobacteria were the prevalent (85%) bacterial groups. • AOB and heterotrophic bacteria participate in NH4+ and cometabolic 2-CP consumption. [ABSTRACT FROM AUTHOR]
Copyright of Applied Microbiology & Biotechnology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Relationship assessment of microbial community and cometabolic consumption of 2-chlorophenol.
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  Data: <searchLink fieldCode="JN" term="%22Applied+Microbiology+%26+Biotechnology%22">Applied Microbiology & Biotechnology</searchLink>. 1/24/2025, Vol. 109 Issue 1, p1-12. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Heterotrophic+bacteria%22">Heterotrophic bacteria</searchLink><br /><searchLink fieldCode="DE" term="%22Batch+reactors%22">Batch reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Life+sciences%22">Life sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Population+dynamics%22">Population dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+communities%22">Microbial communities</searchLink>
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  Label: Abstract
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  Data: The relationship of microbial community and cometabolic consumption of 2-chlorophenol (2-CP) in a nitrifying sequencing batch reactor (SBR) was studied. The assessment of the population dynamics of the nitrifying sludge during the cometabolic 2-CP consumption with increasing ammonium (NH4+) concentrations in the SBR showed the presence of 39 different species of which 10 were always present in all cycles. Fifty-five percent of the species found were grouped as Proteobacteria (45% as β-proteobacteria and 10% as γ-proteobacteria class), 30% as Acidobacteria, and 15% as Deinococcus-Thermus phyla. NH4+ and cometabolic 2-CP consumption could be related to the presence and permanence of ammonium-oxidizing bacteria (AOB) species and heterotrophic bacteria, while the complete nitrification to the presence of nitrite-oxidizing bacteria (NOB) species. A correlation analysis showed that the complete and stable nitrifying performance (NH4+ consumption efficiencies (ENH4+-N) > 99% and nitrate production yields (YNO3−-N) between 0.93 and 0.99), as well as the increase in specific rates (ammonium (qNH4+-N) and 2-CP (q2-CP-C) consumption and nitrate production (qNO3−-N)), was associated with the homogeneity of the bacterial community (J index = 0.99). The increase in the proportion of individuals of AOB species such as Nitrosomonas oligotropha and Nitrosomonas marina was associated with the increase in qNH4+-N (r ≥ 0.69) and q2-CP-C (r ≥ 0.64) and, therefore, with the 2-CP cometabolic consumption in the SBR. Finally, the increase in the proportion of individuals of heterotrophic species such as Dokdonella ginsengisoli, Deinococcus peraridilitoris, Truepera radiovictrix, and Stenotrophobacter terrae was associated with the increase in q2-CP-C (r ≥ 0.59). Key points: • Thirty-nine bacterial species were identified in the nitrifying sludge population of the SBR. • β-Proteobacteria and Acidobacteria were the prevalent (85%) bacterial groups. • AOB and heterotrophic bacteria participate in NH4+ and cometabolic 2-CP consumption. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Applied Microbiology & Biotechnology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Life sciences
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      – SubjectFull: Population dynamics
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      – SubjectFull: Microbial communities
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      – TitleFull: Relationship assessment of microbial community and cometabolic consumption of 2-chlorophenol.
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