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Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis

Ammonia caused disturbance of biogas production is one of the most frequent incidents in regular operation of biogas reactors. This study provides a detailed insight into the microbial community of a mesophilic, full‐scale biogas reactor (477 kWh h(−1)) fed with maize silage, dried poultry manure an...

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Autores principales: Fischer, Martin Alexander, Güllert, Simon, Refai, Sarah, Künzel, Sven, Deppenmeier, Uwe, Streit, Wolfgang R., Schmitz, Ruth Anne
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6390037/
https://www.ncbi.nlm.nih.gov/pubmed/30381904
http://dx.doi.org/10.1111/1751-7915.13313
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author Fischer, Martin Alexander
Güllert, Simon
Refai, Sarah
Künzel, Sven
Deppenmeier, Uwe
Streit, Wolfgang R.
Schmitz, Ruth Anne
author_facet Fischer, Martin Alexander
Güllert, Simon
Refai, Sarah
Künzel, Sven
Deppenmeier, Uwe
Streit, Wolfgang R.
Schmitz, Ruth Anne
author_sort Fischer, Martin Alexander
collection PubMed
description Ammonia caused disturbance of biogas production is one of the most frequent incidents in regular operation of biogas reactors. This study provides a detailed insight into the microbial community of a mesophilic, full‐scale biogas reactor (477 kWh h(−1)) fed with maize silage, dried poultry manure and cow manure undergoing initial process disturbance by increased ammonia concentration. Over a time period of 587 days, the microbial community of the reactor was regularly monitored on a monthly basis by high‐throughput amplicon sequencing of the archaeal and bacterial 16S rRNA genes. During this sampling period, the total ammonia concentrations varied between 2.7 and 5.8 g l(−1) [NH (4) (+)–N]. To gain further inside into the active metabolic pathways, for selected time points metatranscriptomic shotgun analysis was performed allowing the quantification of marker genes for methanogenesis, hydrolysis and syntrophic interactions. The results obtained demonstrated a microbial community typical for a mesophilic biogas plant. However in response to the observed changing process conditions (e.g. increasing NH (4) (+) levels, changing feedstock composition), the microbial community reacted highly flexible by changing and adapting the community composition. The Methanosarcina‐dominated archaeal community was shifted to a Methanomicrobiales‐dominated archaeal community in the presence of increased ammonia conditions. A similar trend as in the phylogenetic composition was observed in the transcription activity of genes coding for enzymes involved in acetoclastic methanogenesis and syntrophic acetate oxidations (Codh/Acs and Fthfs). In accordance, Clostridia simultaneously increased under elevated ammonia concentrations in abundance and were identified as the primary syntrophic interaction partner with the now Methanomicrobiales‐dominated archaeal community. In conclusion, overall stable process performance was maintained during increased ammonia concentration in the studied reactor based on the microbial communities’ ability to flexibly respond by reorganizing the community composition while remaining functionally stable.
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spelling pubmed-63900372019-03-07 Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis Fischer, Martin Alexander Güllert, Simon Refai, Sarah Künzel, Sven Deppenmeier, Uwe Streit, Wolfgang R. Schmitz, Ruth Anne Microb Biotechnol Research Articles Ammonia caused disturbance of biogas production is one of the most frequent incidents in regular operation of biogas reactors. This study provides a detailed insight into the microbial community of a mesophilic, full‐scale biogas reactor (477 kWh h(−1)) fed with maize silage, dried poultry manure and cow manure undergoing initial process disturbance by increased ammonia concentration. Over a time period of 587 days, the microbial community of the reactor was regularly monitored on a monthly basis by high‐throughput amplicon sequencing of the archaeal and bacterial 16S rRNA genes. During this sampling period, the total ammonia concentrations varied between 2.7 and 5.8 g l(−1) [NH (4) (+)–N]. To gain further inside into the active metabolic pathways, for selected time points metatranscriptomic shotgun analysis was performed allowing the quantification of marker genes for methanogenesis, hydrolysis and syntrophic interactions. The results obtained demonstrated a microbial community typical for a mesophilic biogas plant. However in response to the observed changing process conditions (e.g. increasing NH (4) (+) levels, changing feedstock composition), the microbial community reacted highly flexible by changing and adapting the community composition. The Methanosarcina‐dominated archaeal community was shifted to a Methanomicrobiales‐dominated archaeal community in the presence of increased ammonia conditions. A similar trend as in the phylogenetic composition was observed in the transcription activity of genes coding for enzymes involved in acetoclastic methanogenesis and syntrophic acetate oxidations (Codh/Acs and Fthfs). In accordance, Clostridia simultaneously increased under elevated ammonia concentrations in abundance and were identified as the primary syntrophic interaction partner with the now Methanomicrobiales‐dominated archaeal community. In conclusion, overall stable process performance was maintained during increased ammonia concentration in the studied reactor based on the microbial communities’ ability to flexibly respond by reorganizing the community composition while remaining functionally stable. John Wiley and Sons Inc. 2018-10-31 /pmc/articles/PMC6390037/ /pubmed/30381904 http://dx.doi.org/10.1111/1751-7915.13313 Text en © 2018 The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Fischer, Martin Alexander
Güllert, Simon
Refai, Sarah
Künzel, Sven
Deppenmeier, Uwe
Streit, Wolfgang R.
Schmitz, Ruth Anne
Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis
title Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis
title_full Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis
title_fullStr Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis
title_full_unstemmed Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis
title_short Long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis
title_sort long‐term investigation of microbial community composition and transcription patterns in a biogas plant undergoing ammonia crisis
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6390037/
https://www.ncbi.nlm.nih.gov/pubmed/30381904
http://dx.doi.org/10.1111/1751-7915.13313
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