Methane production related to microbiota in dairy cattle feces

Liu, Jian, Zhou, Meng, Zhou, Lifeng, Run Dang, Xiao, Leilei, Tan, Yang, Li, Meng, Yu, Jiafeng, Zhang, Peng, Hernández, Marcela ORCID: https://orcid.org/0000-0002-1041-785X and Lichtfouse, Eric (2024) Methane production related to microbiota in dairy cattle feces. Environmental Research. ISSN 0013-9351

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Abstract

Methane (CH4) emission from livestock feces, led by ruminants, shows a profound impact on global warming. Despite this, we have almost no information on the syntrophy of the intact microbiome metabolisms, from carbohydrates to the one-carbon units, covering multiple stages of ruminant development. In this study, syntrophic effects of polysaccharide degradation and acetate-producing bacteria, and methanogenic archaea were revealed through metagenome-assembled genomes from water saturated dairy cattle feces. Although CH4 is thought to be produced by archaea, more edges, nodes, and balanced interaction types revealed by network analysis provided a closed bacteria-archaea network. The CH4 production potential and pathways were further evaluated through dynamic, thermodynamic and 13C stable isotope analysis. The powerful CH4 production potential benefited from the metabolic flux: classical polysaccharides, soluble sugar (glucose, galactose, lactose), acetate, and CH4 produced via typical acetoclastic methanogenesis. In comparison, a cooperative model dominated by hydrogenotrophic methanogenic archaea presented a weak ability to generate CH4. Our findings comprehensively link carbon and CH4 metabolism paradigm to specific microbial lineages which are shaped related to developmental stages of the dairy cattle, directing influencing global warming from livestock and waste treatment.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Biological Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Molecular Microbiology
Depositing User:	LivePure Connector
Date Deposited:	20 Dec 2024 01:13
Last Modified:	20 Dec 2024 01:13
URI:	https://ueaeprints.uea.ac.uk/id/eprint/98050
DOI:	10.1016/j.envres.2024.120642

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