山东大学学报 (工学版) ›› 2024, Vol. 54 ›› Issue (3): 160-170.doi: 10.6040/j.issn.1672-3961.0.2024.052
• 化学与环境 • 上一篇
郝婕1,2,张梦汝1,张子璇1,王洵3,刘胜1,周维芝1*
HAO Jie1,2, ZHANG Mengru1, ZHANG Zixuan1, WANG Xun3, LIU Sheng1, ZHOU Weizhi1*
摘要： 针对浮游细菌和致病菌对河流水质的差异化响应问题,以人类干扰较少的怒江干流河段为研究对象,利用16S rRNA高通量测序技术分析了河流主要水质因子对水体中浮游细菌、致病菌群落结构及功能的影响。研究结果表明,怒江干流河段水质整体较好,其中氨氮浓度与总磷浓度分别达到地表水Ⅲ类、Ⅱ类的水质标准。黄杆菌属、不动杆菌属、假单胞菌属是怒江浮游细菌的优势菌属,其中不动杆菌和假单胞菌作为潜在致病菌具有较高的相对丰度。冗余分析表明,pH对浮游细菌和致病菌群落结构和功能的影响显著。结合氮代谢功能基因预测表明,较高浓度的氮和硅酸盐显著提升了致病菌的丰度,控制氮和硅酸盐的排放可降低水体致病菌富集。本研究揭示了河流中浮游细菌和致病菌对水质的差异化响应,对掌握河流浮游细菌群落变化特征及致病菌风险具有重要意义。
中图分类号:
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