Discrepant gene functional potential and cross-feedings of anammox bacteria Ca. Jettenia caeni and Ca. Brocadia sinica in response to acetate

Feng, Y; Zhao, Y; Jiang, B; Zhao, H; Wang, Q; Liu, S

Discrepant gene functional potential and cross-feedings of anammox bacteria Ca. Jettenia caeni and Ca. Brocadia sinica in response to acetate

Feng, Y Zhao, Y Jiang, B Zhao, H Wang, Q

Liu, S

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Publication Type:: Journal Article
Citation:: Water Research, 2019, 165
Issue Date:: 2019-11-15

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Field	Value	Language
dc.contributor.author	Feng, Y	en_US
dc.contributor.author	Zhao, Y	en_US
dc.contributor.author	Jiang, B	en_US
dc.contributor.author	Zhao, H	en_US
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331	en_US
dc.contributor.author	Liu, S	en_US
dc.date.available	2019-08-10	en_US
dc.date.issued	2019-11-15	en_US
dc.identifier.citation	Water Research, 2019, 165	en_US
dc.identifier.issn	0043-1354	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138395
dc.description.abstract	© 2019 Elsevier Ltd Although the enhancement of anammox performance for wastewater treatment due to the addition of small amount of acetate has been reported, discrepant metabolic responses of different anammox species have not been experimentally evaluated. Based on metagenomics and metatranscriptomic data, we investigated the competitiveness between two typical anammox species, Candidatus Jettenia caeni (J. caeni) and Candidatus Brocadia sinica (B. sinica), in anammox consortia under mixotrophic condition, where complex metabolic interactions among anammox bacteria and heterotrophs also changed with acetate addition. Contrary to J. caeni, the dissimilatory nitrate reduction to ammonium pathway of B. sinica was markedly stimulated for improving nitrogen removal. More acetate metabolic pathways and up-regulated AMP-acs expression for acetyl-CoA synthesis in B. sinica contributed to its superiority in acetate utilization. Interestingly, cross-feedings, including the nitrogen cycle, amino acid cross-feeding and B-vitamin metabolic exchange between B. sinica and other heterotrophs seemed to be enhanced with acetate addition, contributing to a reduction in metabolic energy cost to the whole community. Our work not only clarified the mechanism underlying discrepant responses of different anammox species to acetate, but also suggests a possible strategy for obtaining higher nitrogen removal rates in wastewater treatment under low C/N ratio.	en_US
dc.relation.ispartof	Water Research	en_US
dc.relation.isbasedon	10.1016/j.watres.2019.114974	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Environmental Engineering	en_US
dc.subject.mesh	Bacteria	en_US
dc.subject.mesh	Nitrogen	en_US
dc.subject.mesh	Ammonium Compounds	en_US
dc.subject.mesh	Acetates	en_US
dc.subject.mesh	Bioreactors	en_US
dc.subject.mesh	Anaerobiosis	en_US
dc.subject.mesh	Oxidation-Reduction	en_US
dc.subject.mesh	Waste Water	en_US
dc.title	Discrepant gene functional potential and cross-feedings of anammox bacteria Ca. Jettenia caeni and Ca. Brocadia sinica in response to acetate	en_US
dc.type	Journal Article
utslib.citation.volume	165	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
pubs.publication-status	Published	en_US
pubs.volume	165	en_US

Abstract:

© 2019 Elsevier Ltd Although the enhancement of anammox performance for wastewater treatment due to the addition of small amount of acetate has been reported, discrepant metabolic responses of different anammox species have not been experimentally evaluated. Based on metagenomics and metatranscriptomic data, we investigated the competitiveness between two typical anammox species, Candidatus Jettenia caeni (J. caeni) and Candidatus Brocadia sinica (B. sinica), in anammox consortia under mixotrophic condition, where complex metabolic interactions among anammox bacteria and heterotrophs also changed with acetate addition. Contrary to J. caeni, the dissimilatory nitrate reduction to ammonium pathway of B. sinica was markedly stimulated for improving nitrogen removal. More acetate metabolic pathways and up-regulated AMP-acs expression for acetyl-CoA synthesis in B. sinica contributed to its superiority in acetate utilization. Interestingly, cross-feedings, including the nitrogen cycle, amino acid cross-feeding and B-vitamin metabolic exchange between B. sinica and other heterotrophs seemed to be enhanced with acetate addition, contributing to a reduction in metabolic energy cost to the whole community. Our work not only clarified the mechanism underlying discrepant responses of different anammox species to acetate, but also suggests a possible strategy for obtaining higher nitrogen removal rates in wastewater treatment under low C/N ratio.

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http://hdl.handle.net/10453/138395