Temperature-dependent transformation of biogas-producing microbial communities points to the increased importance of hydrogenotrophic methanogenesis under thermophilic operation
Stability of biogas production is highly dependent on the microbial community composition of the bioreactors. This composition is basically determined by the nature of biomass substrate and the physical–chemical parameters of the anaerobic digestion. Operational temperature is a major factor in the...
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| Veröffentlicht in: | Bioresource technology 2015-02, Vol.177, p.375-380 |
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| creator | Pap, Bernadett Györkei, Ádám Boboescu, Iulian Zoltan Nagy, Ildikó K. Bíró, Tibor Kondorosi, Éva Maróti, Gergely |
| description | Stability of biogas production is highly dependent on the microbial community composition of the bioreactors. This composition is basically determined by the nature of biomass substrate and the physical–chemical parameters of the anaerobic digestion. Operational temperature is a major factor in the determination of the anaerobic degradation process. Next-generation sequencing (NGS)-based metagenomic approach was used to monitor the organization and operation of the microbial community throughout an experiment where mesophilic reactors (37°C) were gradually switched to thermophilic (55°C) operation. Temperature adaptation resulted in a clearly thermophilic community having a generally decreased complexity compared to the mesophilic system. A temporary destabilization of the system was observed, indicating a lag phase in the community development in response to temperature stress. Increased role of hydrogenotrophic methanogens under thermophilic conditions was shown, as well as considerably elevated levels of Fe-hydrogenases and hydrogen producer bacteria were observed in the thermophilic system. |
| doi_str_mv | 10.1016/j.biortech.2014.11.021 |
| format | Article |
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This composition is basically determined by the nature of biomass substrate and the physical–chemical parameters of the anaerobic digestion. Operational temperature is a major factor in the determination of the anaerobic degradation process. Next-generation sequencing (NGS)-based metagenomic approach was used to monitor the organization and operation of the microbial community throughout an experiment where mesophilic reactors (37°C) were gradually switched to thermophilic (55°C) operation. Temperature adaptation resulted in a clearly thermophilic community having a generally decreased complexity compared to the mesophilic system. A temporary destabilization of the system was observed, indicating a lag phase in the community development in response to temperature stress. Increased role of hydrogenotrophic methanogens under thermophilic conditions was shown, as well as considerably elevated levels of Fe-hydrogenases and hydrogen producer bacteria were observed in the thermophilic system.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2014.11.021</identifier><identifier>PMID: 25481804</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Adaptation, Physiological ; Anaerobic digestion ; Anaerobic processes ; Bacteria ; Bacteria - metabolism ; Biofuels - microbiology ; Biomass ; Bioreactors ; Bioreactors - microbiology ; Communities ; Fatty Acids, Volatile - analysis ; Hydrogen - metabolism ; Hydrogenase ; Hydrogenase - metabolism ; Hydrogenotrophic methanogenesis ; Metagenomics ; Methane - biosynthesis ; Microorganisms ; Monitors ; Phylogeny ; Sequencing ; Stress, Physiological ; Temperature ; Thermophilic microbial community ; Transformations</subject><ispartof>Bioresource technology, 2015-02, Vol.177, p.375-380</ispartof><rights>2014 Elsevier Ltd</rights><rights>Copyright © 2014 Elsevier Ltd. 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Increased role of hydrogenotrophic methanogens under thermophilic conditions was shown, as well as considerably elevated levels of Fe-hydrogenases and hydrogen producer bacteria were observed in the thermophilic system.</description><subject>Adaptation, Physiological</subject><subject>Anaerobic digestion</subject><subject>Anaerobic processes</subject><subject>Bacteria</subject><subject>Bacteria - metabolism</subject><subject>Biofuels - microbiology</subject><subject>Biomass</subject><subject>Bioreactors</subject><subject>Bioreactors - microbiology</subject><subject>Communities</subject><subject>Fatty Acids, Volatile - analysis</subject><subject>Hydrogen - metabolism</subject><subject>Hydrogenase</subject><subject>Hydrogenase - metabolism</subject><subject>Hydrogenotrophic methanogenesis</subject><subject>Metagenomics</subject><subject>Methane - biosynthesis</subject><subject>Microorganisms</subject><subject>Monitors</subject><subject>Phylogeny</subject><subject>Sequencing</subject><subject>Stress, Physiological</subject><subject>Temperature</subject><subject>Thermophilic microbial community</subject><subject>Transformations</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNksFu1TAQRSMEoo_CL1ResknqcRIn2YEqCkiV2JS15diTFz_FdrAdpH4Wf1iH17KlK0v2mTvXM7coroBWQIFfn6rR-JBQzRWj0FQAFWXwqjhA39UlGzr-ujjQgdOyb1lzUbyL8UQpraFjb4sL1jY99LQ5FH_u0a4YZNoClhpXdBpdIilIFycfrEzGO-InktsdZSzX4PWmjDsSa1Two5ELUd7azZlkMJLVG5ciSZ6kGYlxKqCMqImxa7YrncJdbH7QwR_R-RT8OhtFLKZZuv0Ko4lkyy7CrhDs_r5kwv91mc28L95Mcon44em8LH7efrm_-Vbe_fj6_ebzXalaSlOJHeiplRNnveS66SUgk7pmumEDSN3XrRrZKDkbmnoaEYCh4mySg6Yj9IzWl8XHs27-8q8NYxLWRIXLIh36LQrgfOibllN4CUrrATirX4DWw9B1nHUZ5Wc0zznGgJNYg7EyPAigYg-BOInnEIg9BAJA5BDkwqunHttoUf8re956Bj6dAczz-20wiKgM5t1oE1Alob35X49HcjvNDQ</recordid><startdate>201502</startdate><enddate>201502</enddate><creator>Pap, Bernadett</creator><creator>Györkei, Ádám</creator><creator>Boboescu, Iulian Zoltan</creator><creator>Nagy, Ildikó K.</creator><creator>Bíró, Tibor</creator><creator>Kondorosi, Éva</creator><creator>Maróti, Gergely</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QO</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>7SU</scope><scope>7TB</scope><scope>KR7</scope></search><sort><creationdate>201502</creationdate><title>Temperature-dependent transformation of biogas-producing microbial communities points to the increased importance of hydrogenotrophic methanogenesis under thermophilic operation</title><author>Pap, Bernadett ; 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| subjects | Adaptation, Physiological Anaerobic digestion Anaerobic processes Bacteria Bacteria - metabolism Biofuels - microbiology Biomass Bioreactors Bioreactors - microbiology Communities Fatty Acids, Volatile - analysis Hydrogen - metabolism Hydrogenase Hydrogenase - metabolism Hydrogenotrophic methanogenesis Metagenomics Methane - biosynthesis Microorganisms Monitors Phylogeny Sequencing Stress, Physiological Temperature Thermophilic microbial community Transformations |
| title | Temperature-dependent transformation of biogas-producing microbial communities points to the increased importance of hydrogenotrophic methanogenesis under thermophilic operation |
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