Abstract：
:Understanding of how anaerobic digestion (AD)-related microbiomes are constructed by operational parameters or their interactions within the biochemical process is limited. Using high-throughput sequencing and molecular ecological network analysis, this study shows the succession of AD-related microbiome hosting diverse members of the phylum Actinobacteria, Bacteroidetes, Euryarchaeota, and Firmicutes, which were affected by organic loading rate (OLR) and hydraulic retention time (HRT). OLR formed finer microbial network modules than HRT (12 vs. 6), suggesting the further subdivision of functional components. Biomarkers were also identified in OLR or HRT groups (e.g. the family Actinomycetaceae, Methanosaetaceae and Aminiphilaceae). The most pair-wise link between Firmicutes and biogas production indicates the keystone members based on network features can be considered as markers in the regulation of AD. A set of 40% species ("core microbiome") were similar across different digesters. Such noteworthy overlap of microbiomes indicates they are generalists in maintaining the ecological stability of digesters.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Xu R,Yang ZH,Zheng Y,Liu JB,Xiong WP,Zhang YR,Lu Y,Xue WJ,Fan CZdoi
10.1016/j.biortech.2018.04.083subject
Has Abstractpub_date
2018-08-01 00:00:00pages
184-193eissn
0960-8524issn
1873-2976pii
S0960-8524(18)30606-0journal_volume
262pub_type
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