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Anaerobic bioreactor

ABSTRACT: Novel Thermal Hydrolysis and Vacuum Fermentation Technology for Volatile Fatty Acids and Methane Recovery

PROVIDER: PRJNA832339 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18947350_1.fastq.gz	Fastqsanger.gz
	SRR18947350_2.fastq.gz	Fastqsanger.gz
	SRR18947351_1.fastq.gz	Fastqsanger.gz
	SRR18947351_2.fastq.gz	Fastqsanger.gz
	SRR18947352_1.fastq.gz	Fastqsanger.gz

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Project description:Anaerobic degradation (AD) of heterogeneous agricultural substrates is a complex process involving a diverse microbial community. While microbial community composition of a variety of biogas plants (BPs) is well described, little is known about metabolic processes and microbial interaction patterns. Here, we analyzed 16 large-scale BPs using metaproteomics. All metabolic steps of AD were observed in the metaproteome, and multivariate analyses indicated that they were shaped by temperature, pH, volatile fatty acid content and substrate types. Biogas plants can be subdivided into hydrogenotrophic, acetoclastic or a mixture of both methanogenic pathways based on their process parameters, taxonomic and functional metaproteome. Network analyses showed large differences in metabolic and microbial interaction patterns. Both, number of interactions and interaction partners were highly dependent on the prevalent methanogenic pathway for most species. Nevertheless, we observed a highly conserved metabolism of different abundant Pseudomonas spp. for all BPs indicating a key role during AD in carbohydrate hydrolysis irrespectively of variabilities in substrate input and process parameters. Thus, Pseudomonas spp. are of high importance for robust and versatile AD food webs, which highlight a large variety of downstream metabolic processes for their respective methanogenic pathways.

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