Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses
Ruminant animals house a dense and diverse community of microorganisms in their rumen, an enlarged compartment in their stomach, which provides a supportive environment for the storage and microbial fermentation of ingested feeds dominated by plant materials. The rumen microbiota has acquired divers...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Elsevier
2023
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/130314 |
| _version_ | 1855533573434507264 |
|---|---|
| author | Gharechahi, J. Vahidi, M.F. Sharifi, G. Ariaeenejad, S., Xue-Zhi Ding Han Jianlin Salekdeh, G.H. |
| author_browse | Ariaeenejad, S., Gharechahi, J. Han Jianlin Salekdeh, G.H. Sharifi, G. Vahidi, M.F. Xue-Zhi Ding |
| author_facet | Gharechahi, J. Vahidi, M.F. Sharifi, G. Ariaeenejad, S., Xue-Zhi Ding Han Jianlin Salekdeh, G.H. |
| author_sort | Gharechahi, J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Ruminant animals house a dense and diverse community of microorganisms in their rumen, an enlarged compartment in their stomach, which provides a supportive environment for the storage and microbial fermentation of ingested feeds dominated by plant materials. The rumen microbiota has acquired diverse and functionally overlapped enzymes for the degradation of plant cell wall polysaccharides. In rumen Bacteroidetes, enzymes involved in degradation are clustered into polysaccharide utilization loci to facilitate coordinated expression when target polysaccharides are available. Firmicutes use free enzymes and cellulosomes to degrade the polysaccharides. Fibrobacters either aggregate lignocellulose-degrading enzymes on their cell surface or release them into the extracellular medium in membrane vesicles, a mechanism that has proven extremely effective in the breakdown of recalcitrant cellulose. Based on current metagenomic analyses, rumen Bacteroidetes and Firmicutes are categorized as generalist microbes that can degrade a wide range of polysaccharides, while other members adapted toward specific polysaccharides. Particularly, there is ample evidence that Verrucomicrobia and Spirochaetes have evolved enzyme systems for the breakdown of complex polysaccharides such as xyloglucans, peptidoglycans, and pectin. It is concluded that diversity in degradation mechanisms is required to ensure that every component in feeds is efficiently degraded, which is key to harvesting maximum energy by host animals. |
| format | Journal Article |
| id | CGSpace130314 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1303142025-10-26T13:02:31Z Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses Gharechahi, J. Vahidi, M.F. Sharifi, G. Ariaeenejad, S., Xue-Zhi Ding Han Jianlin Salekdeh, G.H. rumen lignocellulose feeds animal genetics Ruminant animals house a dense and diverse community of microorganisms in their rumen, an enlarged compartment in their stomach, which provides a supportive environment for the storage and microbial fermentation of ingested feeds dominated by plant materials. The rumen microbiota has acquired diverse and functionally overlapped enzymes for the degradation of plant cell wall polysaccharides. In rumen Bacteroidetes, enzymes involved in degradation are clustered into polysaccharide utilization loci to facilitate coordinated expression when target polysaccharides are available. Firmicutes use free enzymes and cellulosomes to degrade the polysaccharides. Fibrobacters either aggregate lignocellulose-degrading enzymes on their cell surface or release them into the extracellular medium in membrane vesicles, a mechanism that has proven extremely effective in the breakdown of recalcitrant cellulose. Based on current metagenomic analyses, rumen Bacteroidetes and Firmicutes are categorized as generalist microbes that can degrade a wide range of polysaccharides, while other members adapted toward specific polysaccharides. Particularly, there is ample evidence that Verrucomicrobia and Spirochaetes have evolved enzyme systems for the breakdown of complex polysaccharides such as xyloglucans, peptidoglycans, and pectin. It is concluded that diversity in degradation mechanisms is required to ensure that every component in feeds is efficiently degraded, which is key to harvesting maximum energy by host animals. 2023-07 2023-05-10T14:45:09Z 2023-05-10T14:45:09Z Journal Article https://hdl.handle.net/10568/130314 en Open Access Elsevier Gharechahi, J., Vahidi, M.F., Sharifi, G., Ariaeenejad, S., Xue-Zhi Ding, Jian-Lin Han and Salekdeh, G.H. 2023. Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses. Environmental Research 229: 115925 |
| spellingShingle | rumen lignocellulose feeds animal genetics Gharechahi, J. Vahidi, M.F. Sharifi, G. Ariaeenejad, S., Xue-Zhi Ding Han Jianlin Salekdeh, G.H. Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses |
| title | Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses |
| title_full | Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses |
| title_fullStr | Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses |
| title_full_unstemmed | Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses |
| title_short | Lignocellulose degradation by rumen bacterial communities: New insights from metagenome analyses |
| title_sort | lignocellulose degradation by rumen bacterial communities new insights from metagenome analyses |
| topic | rumen lignocellulose feeds animal genetics |
| url | https://hdl.handle.net/10568/130314 |
| work_keys_str_mv | AT gharechahij lignocellulosedegradationbyrumenbacterialcommunitiesnewinsightsfrommetagenomeanalyses AT vahidimf lignocellulosedegradationbyrumenbacterialcommunitiesnewinsightsfrommetagenomeanalyses AT sharifig lignocellulosedegradationbyrumenbacterialcommunitiesnewinsightsfrommetagenomeanalyses AT ariaeenejads lignocellulosedegradationbyrumenbacterialcommunitiesnewinsightsfrommetagenomeanalyses AT xuezhiding lignocellulosedegradationbyrumenbacterialcommunitiesnewinsightsfrommetagenomeanalyses AT hanjianlin lignocellulosedegradationbyrumenbacterialcommunitiesnewinsightsfrommetagenomeanalyses AT salekdehgh lignocellulosedegradationbyrumenbacterialcommunitiesnewinsightsfrommetagenomeanalyses |