1. Enhancing C and N turnover, functional bacteria abundance, and the efficiency of biowaste conversion using Streptomyces-Bacillus inoculation.
- Author
-
Zhou, Ziyan, Shi, Xiaofei, Bhople, Parag, Jiang, Jishao, Chater, Caspar C.C., Yang, Shimei, Perez-Moreno, Jesus, Yu, Fuqiang, and Liu, Dong
- Subjects
- *
NITRATE reductase , *NITRITE reductase , *CATTLE manure , *CORN straw , *FUNGAL communities , *VACCINATION - Abstract
Microbial inoculation plays a significant role in promoting the efficiency of biowaste conversion. This study investigates the function of Streptomyces-Bacillus Inoculants (SBI) on carbon (C) and nitrogen (N) conversion, and microbial dynamics, during cow manure (10% and 20% addition) and corn straw co-composting. Compared to inoculant-free controls, inoculant application accelerated the compost's thermophilic stage (8 vs 15 days), and significantly increased compost total N contents (+47%) and N-reductase activities (nitrate reductase: +60%; nitrite reductase: +219%). Both bacterial and fungal community succession were significantly affected by DOC, urease, and NH 4 +-N, while the fungal community was also significantly affected by cellulase. The contribution rate of Cupriavidus to the physicochemical factors of compost was as high as 83.40%, but by contrast there were no significantly different contributions (∼60%) among the top 20 fungal genera. Application of SBI induced significant correlations between bacteria, compost C/N ratio, and catalase enzymes, indicative of compost maturation. We recommend SBI as a promising bio-composting additive to accelerate C and N turnover and high-quality biowaste maturation. SBI boosts organic cycling by transforming biowastes into bio-fertilizers efficiently. This highlights the potential for SBI application to improve plant growth and soil quality in multiple contexts. [Display omitted] • The addition of SBI shortens the composting process and maturation period. • SBI increased N-reductase activity (+140%) and TN (+47%) content in composts. • SBI stimulated the abundance of cellulose-degrading bacteria. • SBI accelerated the succession of C and N cycling microbial communities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF