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Absence of oxygen effect on microbial structure and methane production during drying and rewetting events

Natural environments with frequent drainage experience drying and rewetting events that impose fluctuations in water availability and oxygen exposure. These relatively dramatic cycles profoundly impact microbial activity in the environment and subsequent emissions of methane and carbon dioxide. In t...

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Autores principales: Liu, Tong, Li, Xiaoxiao, Yekta, Sepehr Shakeri, Björn, Annika, Mu, Bo-Zhong, Masuda, Laura Shizue Moriga, Schnürer, Anna, Enrich-Prast, Alex
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9532411/
https://www.ncbi.nlm.nih.gov/pubmed/36195651
http://dx.doi.org/10.1038/s41598-022-20448-5
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author Liu, Tong
Li, Xiaoxiao
Yekta, Sepehr Shakeri
Björn, Annika
Mu, Bo-Zhong
Masuda, Laura Shizue Moriga
Schnürer, Anna
Enrich-Prast, Alex
author_facet Liu, Tong
Li, Xiaoxiao
Yekta, Sepehr Shakeri
Björn, Annika
Mu, Bo-Zhong
Masuda, Laura Shizue Moriga
Schnürer, Anna
Enrich-Prast, Alex
author_sort Liu, Tong
collection PubMed
description Natural environments with frequent drainage experience drying and rewetting events that impose fluctuations in water availability and oxygen exposure. These relatively dramatic cycles profoundly impact microbial activity in the environment and subsequent emissions of methane and carbon dioxide. In this study, we mimicked drying and rewetting events by submitting methanogenic communities from strictly anaerobic environments (anaerobic digestors) with different phylogenetic structures to consecutive desiccation events under aerobic (air) and anaerobic (nitrogen) conditions followed by rewetting. We showed that methane production quickly recovered after each rewetting, and surprisingly, no significant difference was observed between the effects of the aerobic or anaerobic desiccation events. There was a slight change in the microbial community structure and a decrease in methane production rates after consecutive drying and rewetting, which can be attributed to a depletion of the pool of available organic matter or the inhibition of the methanogenic communities. These observations indicate that in comparison to the drying and rewetting events or oxygen exposure, the initial phylogenetic structure and the organic matter quantity and quality exhibited a stronger influence on the methanogenic communities and overall microbial community responses. These results change the current paradigm of the sensitivity of strict anaerobic microorganisms to oxygen exposure.
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spelling pubmed-95324112022-10-06 Absence of oxygen effect on microbial structure and methane production during drying and rewetting events Liu, Tong Li, Xiaoxiao Yekta, Sepehr Shakeri Björn, Annika Mu, Bo-Zhong Masuda, Laura Shizue Moriga Schnürer, Anna Enrich-Prast, Alex Sci Rep Article Natural environments with frequent drainage experience drying and rewetting events that impose fluctuations in water availability and oxygen exposure. These relatively dramatic cycles profoundly impact microbial activity in the environment and subsequent emissions of methane and carbon dioxide. In this study, we mimicked drying and rewetting events by submitting methanogenic communities from strictly anaerobic environments (anaerobic digestors) with different phylogenetic structures to consecutive desiccation events under aerobic (air) and anaerobic (nitrogen) conditions followed by rewetting. We showed that methane production quickly recovered after each rewetting, and surprisingly, no significant difference was observed between the effects of the aerobic or anaerobic desiccation events. There was a slight change in the microbial community structure and a decrease in methane production rates after consecutive drying and rewetting, which can be attributed to a depletion of the pool of available organic matter or the inhibition of the methanogenic communities. These observations indicate that in comparison to the drying and rewetting events or oxygen exposure, the initial phylogenetic structure and the organic matter quantity and quality exhibited a stronger influence on the methanogenic communities and overall microbial community responses. These results change the current paradigm of the sensitivity of strict anaerobic microorganisms to oxygen exposure. Nature Publishing Group UK 2022-10-04 /pmc/articles/PMC9532411/ /pubmed/36195651 http://dx.doi.org/10.1038/s41598-022-20448-5 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Liu, Tong
Li, Xiaoxiao
Yekta, Sepehr Shakeri
Björn, Annika
Mu, Bo-Zhong
Masuda, Laura Shizue Moriga
Schnürer, Anna
Enrich-Prast, Alex
Absence of oxygen effect on microbial structure and methane production during drying and rewetting events
title Absence of oxygen effect on microbial structure and methane production during drying and rewetting events
title_full Absence of oxygen effect on microbial structure and methane production during drying and rewetting events
title_fullStr Absence of oxygen effect on microbial structure and methane production during drying and rewetting events
title_full_unstemmed Absence of oxygen effect on microbial structure and methane production during drying and rewetting events
title_short Absence of oxygen effect on microbial structure and methane production during drying and rewetting events
title_sort absence of oxygen effect on microbial structure and methane production during drying and rewetting events
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9532411/
https://www.ncbi.nlm.nih.gov/pubmed/36195651
http://dx.doi.org/10.1038/s41598-022-20448-5
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