Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater

Abstract In this study, nitrification before and after abrupt cross-transfer in salinity was investigated in two moving bed biofilm reactors inoculated with nitrifying cultures that had adaptation to freshwater (FR) and seawater salinities (SR). FR and SR MBRRs were exposed to short and long term cr...

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Autores principales:	Blanca M. Gonzalez-Silva, Kjell Rune Jonassen, Ingrid Bakke, Kjetill Østgaard, Olav Vadstein
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5f418ea1480c4470a34592e0819151e2
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spelling	oai:doaj.org-article:5f418ea1480c4470a34592e0819151e22021-12-02T14:06:56ZUnderstanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater10.1038/s41598-021-82272-72045-2322https://doaj.org/article/5f418ea1480c4470a34592e0819151e22021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82272-7https://doaj.org/toc/2045-2322Abstract In this study, nitrification before and after abrupt cross-transfer in salinity was investigated in two moving bed biofilm reactors inoculated with nitrifying cultures that had adaptation to freshwater (FR) and seawater salinities (SR). FR and SR MBRRs were exposed to short and long term cross-transfer in salinity, and the functional capacity of nitrifying microbial communities was quantified by the estimation of ammonia and nitrite oxidation rates. Salinity induced successions were evaluated before and after salinity change by deep sequencing of 16S rRNA gene amplicons and statistical analysis. The bacterial community structure was characterized and Venn diagrams were included. The results indicated that after salinity cross-transfer, the FR was not significantly recovered at seawater salinity whereas SR showed high resistance to stress caused by low-salt. Succession and physiological plasticity were the main mechanisms of the long-term adaption of the nitrifying communities exposed to abrupt salinity changes. Independently of salinity, some nitrifiers presented high physiological plasticity towards salinity and were very successful at both zero and full seawater salinity. SR culture is robust and suitable inoculum for ammonium removal from recirculating aquaculture systems and industrial wastewaters with variable and fast salinity changes. Our findings contradict the current perspective of the significance of salinity on the structure of nitrifying communities.Blanca M. Gonzalez-SilvaKjell Rune JonassenIngrid BakkeKjetill ØstgaardOlav VadsteinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Blanca M. Gonzalez-Silva Kjell Rune Jonassen Ingrid Bakke Kjetill Østgaard Olav Vadstein Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater
description	Abstract In this study, nitrification before and after abrupt cross-transfer in salinity was investigated in two moving bed biofilm reactors inoculated with nitrifying cultures that had adaptation to freshwater (FR) and seawater salinities (SR). FR and SR MBRRs were exposed to short and long term cross-transfer in salinity, and the functional capacity of nitrifying microbial communities was quantified by the estimation of ammonia and nitrite oxidation rates. Salinity induced successions were evaluated before and after salinity change by deep sequencing of 16S rRNA gene amplicons and statistical analysis. The bacterial community structure was characterized and Venn diagrams were included. The results indicated that after salinity cross-transfer, the FR was not significantly recovered at seawater salinity whereas SR showed high resistance to stress caused by low-salt. Succession and physiological plasticity were the main mechanisms of the long-term adaption of the nitrifying communities exposed to abrupt salinity changes. Independently of salinity, some nitrifiers presented high physiological plasticity towards salinity and were very successful at both zero and full seawater salinity. SR culture is robust and suitable inoculum for ammonium removal from recirculating aquaculture systems and industrial wastewaters with variable and fast salinity changes. Our findings contradict the current perspective of the significance of salinity on the structure of nitrifying communities.
format	article
author	Blanca M. Gonzalez-Silva Kjell Rune Jonassen Ingrid Bakke Kjetill Østgaard Olav Vadstein
author_facet	Blanca M. Gonzalez-Silva Kjell Rune Jonassen Ingrid Bakke Kjetill Østgaard Olav Vadstein
author_sort	Blanca M. Gonzalez-Silva
title	Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater
title_short	Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater
title_full	Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater
title_fullStr	Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater
title_full_unstemmed	Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater
title_sort	understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5f418ea1480c4470a34592e0819151e2
work_keys_str_mv	AT blancamgonzalezsilva understandingstructurefunctionrelationshipsinnitrifyingmicrobialcommunitiesaftercrosstransferbetweenfreshwaterandseawater AT kjellrunejonassen understandingstructurefunctionrelationshipsinnitrifyingmicrobialcommunitiesaftercrosstransferbetweenfreshwaterandseawater AT ingridbakke understandingstructurefunctionrelationshipsinnitrifyingmicrobialcommunitiesaftercrosstransferbetweenfreshwaterandseawater AT kjetilløstgaard understandingstructurefunctionrelationshipsinnitrifyingmicrobialcommunitiesaftercrosstransferbetweenfreshwaterandseawater AT olavvadstein understandingstructurefunctionrelationshipsinnitrifyingmicrobialcommunitiesaftercrosstransferbetweenfreshwaterandseawater
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Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater

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