College of Life Science, Northeast Agricultural University, Harbin 150030, China.
College of Life Science, Northeast Agricultural University, Harbin 150030, China; College of Life Sciences, Tianjin Normal University, Tianjin 300387, China.
Bioresour Technol. 2023 Nov;387:129563. doi: 10.1016/j.biortech.2023.129563. Epub 2023 Jul 26.
This study explored the interaction among the components of dissolved organic matter (DOM), environmental factors and oxytetracycline (OTC) tolerant bacteria during chicken manure composting using Parallel Factor Analysis (PARAFAC) and 16S rRNA sequencing analysis. The results revealed that the OTC residues in chicken manure may affect the transformation between the protein-like component (C1) and humus-like component (C2 and C3) during composting. The transformation of DOM components under the OTC stress was indirect by affecting the microbial community activity. The OTC tolerant bacteria that still exist after the high temperature period of composting had a significant positive correlation between the humification process. The correlations of the dissolved organic carbon (DOC), total nitrogen (TN), and core OTC tolerant bacteria with DOM components, which enhanced the cooperative function of DOM component transformation. To clarify the influence of OTC residue on the humification process can promote the composting carbon fixation and improve composting quality.
本研究采用平行因子分析（PARAFAC）和 16S rRNA 测序分析，探讨了鸡粪堆肥过程中溶解有机物质（DOM）的成分、环境因素和土霉素（OTC）耐受细菌之间的相互作用。结果表明，鸡粪中的 OTC 残留可能会影响堆肥过程中类蛋白成分（C1）和类腐殖质成分（C2 和 C3）之间的转化。在 OTC 胁迫下，DOM 成分的转化是通过影响微生物群落活性间接进行的。高温期后仍存在的 OTC 耐受细菌与腐殖化过程呈显著正相关。溶解有机碳（DOC）、总氮（TN）和核心 OTC 耐受细菌与 DOM 成分之间的相关性增强了 DOM 成分转化的协同作用。阐明 OTC 残留对腐殖化过程的影响可以促进堆肥固碳，提高堆肥质量。
