Abstract:
:Diazotroph community contributes to the nitrogen mass and improves the agronomic quality of composting product, but their responses to microbial inoculation during composting are unclear. In this study, the lignocellulose-degrading consortium was inoculated at different levels (0%: CK (control) and 10%: T) to investigate their effects on the variations in the diazotroph community and functional gene during composting. In the later composting phase, the nifH gene copy number was 17.50-25.28% higher in T than CK. The nitrogenase abundance in CK and T were 0.042% and 0.046% in composting product, respectively. Network analysis indicated that inoculation affected the co-occurrence patterns of the diazotroph community and changed the keystone species composition. Partial least-squares path modeling showed that available carbon sources and the succession of the diazotroph community mainly determined the increased abundance of nifH gene. Microbial inoculation stimulated the diazotrophs activities, and was conducive to the nitrogen production in composting product.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Hu T,Wang X,Zhen L,Gu J,Song Z,Sun W,Xie Jdoi
10.1016/j.biortech.2021.125469keywords:
["Co-occurrence pattern","Diazotroph community","Keystone species","Partial least-squares path modeling","nifH gene"]subject
Has Abstractpub_date
2021-10-01 00:00:00pages
125469eissn
0960-8524issn
1873-2976pii
S0960-8524(21)00809-9journal_volume
337pub_type
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