College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Northwest A&F University, Yangling, Shaanxi 712100, China.
Bioresour Technol. 2017 Nov;244(Pt 1):252-260. doi: 10.1016/j.biortech.2017.07.035. Epub 2017 Jul 8.
Swine manure is considered to be a reservoir for antibiotic resistance genes (ARGs) but little is known about the variations in ARGs during the co-composting of swine manure with Chinese medicinal herbal residues (CMHRs). Thus, this study explored the effects of CMHRs on the variations in ARGs during co-composting with swine manure. The results showed that CMHRs could reduce effectively most of the targeted ARGs (0.18-2.82logs) and mobile genetic elements (MGEs) (0.47-3.34logs). The correlations indicated that CMHRs might decrease the spread of ARGs via horizontal gene transfer. Redundancy analysis showed that the bacterial communities had more important effects on the variations in ARGs compared with environmental factors and MGEs. The results of this study demonstrate that CMHRs can decrease the abundances of ARGs and MGEs, as well as reducing the risk of ARGs spreading during the application of compost products to farmland.
猪粪被认为是抗生素耐药基因（ARGs）的储存库，但对于猪粪与中草药渣（CMHRs）共堆肥过程中 ARGs 的变化知之甚少。因此，本研究探讨了 CMHRs 对猪粪共堆肥过程中 ARGs 变化的影响。结果表明，CMHRs 可有效降低大部分目标 ARGs（0.18-2.82logs）和移动遗传元件（MGEs）（0.47-3.34logs）。相关性分析表明，CMHRs 可能通过水平基因转移降低 ARGs 的传播。冗余分析表明，与环境因素和 MGEs 相比，细菌群落对 ARGs 的变化有更重要的影响。本研究结果表明，CMHRs 可降低 ARGs 和 MGEs 的丰度，从而降低堆肥产品施用于农田时 ARGs 传播的风险。
