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Physicochemical characteristics of stored cattle manure affect methane emissions by inducing divergence of methanogens that have different interactions with bacteria.
- Source :
-
Agriculture, Ecosystems & Environment . Feb2018, Vol. 253, p38-47. 10p. - Publication Year :
- 2018
-
Abstract
- Greenhouse gas (GHG) emissions from manure management are an environmental concern that hinders the livestock industry. Methane (CH 4 ) is the primary non-CO 2 GHG emitted from outdoor manure storage facilities. Understanding the relationship between the microbial community and manure physicochemical characteristics, together with their contributions to CH 4 emission during storage are of importance for mitigation and ecological significance. In this study, the archaeal and bacterial communities in manure were investigated using high-throughput sequencing, revealing that manure physicochemical characteristics have a major influence on the distribution and enrichment of methanogenic taxa as well as CH 4 emission. Moisture and total phosphorus (TP) were positively correlated with Methanocorpusculum abundance in cow manure with high CH 4 emission, while they were negatively correlated with Methanobacterium abundance in heifer manure with low CH 4 emission at the species level. Quantitative PCR analysis of transcript abundance of alpha subunit of Methyl coenzyme-M reductase (mcrA) gene in cow manure disclosed relatively strong activity of Methanocorpusculum . sPLS regression and network analyses of microbial taxa revealed that different bacteria–methanogen patterns are associated with CH 4 emission. Our data indicates that the manure physicochemical characteristics influence CH 4 emissions by altering the divergence of methanogens that differ in transcriptional efficiency of mcrA gene and are correlated with some bacterial taxa, providing insights into the mechanisms of CH 4 emission during manure storage. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01678809
- Volume :
- 253
- Database :
- Academic Search Index
- Journal :
- Agriculture, Ecosystems & Environment
- Publication Type :
- Academic Journal
- Accession number :
- 126349830
- Full Text :
- https://doi.org/10.1016/j.agee.2017.10.020