Abstract：
:Nitrogen-transforming microorganisms play pivotal roles for the microbial nitrogen-cycling network in the anammox granular system. However, little is known about the effects of inorganic carbon (IC) stresses on the assemblage patterns and functional profiles of abundant and rare taxa. Herein, the community assemblage and functional traits of abundant and rare sub-communities were investigated. Results revealed that insufficient IC had adverse influences on the process performance, while anammox activity could be recovered by IC addition. Co-occurrence network analysis indicated that abundant and rare sub-communities present divergent co-occurrence patterns. Additionally, environmental filtering had different influences on the ecological adaptability of bacterial sub-communities. Furthermore, qPCR results illustrated that NH4+-N and NO2--N consumption were regulated by abundant sub-community, while their accumulation was mediated by rare sub-community. Collectively, these findings suggest that abundant and rare sub-communities present contrasting assemblage patterns and metabolic pathways, and functional profiles dominated selection of bacterial sub-communities under IC stresses.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Shu D,Zhang B,He Y,Wei Gdoi
10.1016/j.biortech.2018.06.022subject
Has Abstractpub_date
2018-10-01 00:00:00pages
299-309eissn
0960-8524issn
1873-2976pii
S0960-8524(18)30801-0journal_volume
265pub_type
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