Oxytetracycline stress reconstruct the core microbial community related to nitrogen transformation during composting. (January 2021)

• Record Type: Journal Article
• Authors: Zhang, Xu; Li, Shenzhou; Cheng, Wanting; Zhao, Yue; Cui, Hongyang; Xie, Xinyu; Wu, Junqiu; Wei, Zimin; Liu, Yan
• Is Part Of: Bioresource technology. Volume 319(2021)
• Publication Date: 2021-01
• Subjects: Antibiotic -- Chicken manure -- Composting -- Core microorganisms -- Nitrogen transformation; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.124142
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: The OTC could inhibit the transformation of NH4 + -N to NO3 − -N during composting. The OTC inhibited the growth of core microbial and led to a delay effect. The Bacillus and Thermobifida could inhibited the transformation of nitrogen. Nitrogen loss could be reduced by regulating core microbes during composting. Abstract: This study investigated oxytetracycline (OTC) effects on nitrogen (N) transformation and bacterial community diversity during chicken manure composting. The addition of OTC inhibited nitrifying bacteria, resulted in a decrease in the transformation of NH4 + -N to NO3 − -N during composting, and affected in the order T3 (32.76%) > T2 (28.76%) > T1 (17.02%) > CK. The OTC could act as an inhibitor against core microbial growth, leading to a delay effect during composting. 16S rRNA sequencing was employed for the functional prediction, and results indicated the bacterial community related to N transformation reconstructed under OTC stress. The core microorganisms were changed after OTC addition, with the emergence of Bacillus and Thermobifida, which could inhibit the N transformation by network analysis. Therefore, core microorganisms could be regulated to reduce the negative of OTC impacts on N transformation and thus reduce N loss during composting.