水体中放线菌的抑藻效果及抑藻机理  

Algal inhibition effect and mechanism of Actinomycetes in water

作　　者：陈旭清 张建华 武晗琪 杜存浩 倪利晓[3,4] CHEN Xuping;ZHANG Jianhua;WU Hanqi;DU Cunhao;NI Xiaoli(Wuxi Algae Control office,Wuxi 214071,Jiangsu;Jiangsu water resources service center,Nanjing 210029,Jiangsu;College of Environment,Hohai University,Nanjing 210098,Jiangsu;Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes,Ministry of Education,Hohai University,Nanjing 210098,Jiangsu)

机构地区：[1]无锡市蓝藻治理办公室,江苏无锡214071 [2]江苏省水资源中心,江苏南京210029 [3]河海大学环境学院,江苏南京210098 [4]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098

出　　处：《江苏水利》2019年第11期26-31,共6页Jiangsu Water Resources

基　　金：国家自然科学基金(No.51779079);江苏省自然科学基金(No.BK20181313);江苏省水利科技项目(2018037)

摘　　要：针对目前蓝藻水华污染频发且治理困难的问题,本研究选取了水体中的放线菌作为研究对象,通过测定铜绿微囊藻的一些生理活性指标来探究其抑藻效果和抑藻机理。研究结果表明放线菌具有良好的抑藻效果,且浓度越高,抑藻效果越明显。当菌液浓度为500 ml/L时,其对于铜绿微囊藻的抑制率可达到68. 2%。同时借助扫描电子显微镜和三维荧光扫描等手段推测放线菌是通过直接攻击藻细胞和分泌抑藻物质这2种途径来达到抑藻的目的。Algal blooms have become one of the main environment hazards for decades. The control of harmful algal blooms has become a hot topic. This paper focuses on the inhibitory effects and mechanisms of Actinomycetes in water and their filtrate on Microcystis aeruginosa( M. aeruginosa). The results showed that Actinomycetes could effectively inhibit the growth of M. aeruginosa. And the increases of Actinomycetes concentration could lead to an associated increase in inhibitory ratio of M. aeruginosa. When the concentration of Actinomycetes solution was 500 ml/L,the maximum inhibition rate reached to 68. 2%. By means of scanning electron microscope( SEM) and three-dimensional fluorescence excitation-emission matrix( 3 D-EEM) technology,the inhibitory mechanism of Actinomycetes on M. aeruginosa was speculated to be achieved by directly attacking algal cells and secreting algal inhibiting substances.

关 键 词：放线菌 铜绿微囊藻 抑藻效果 抑藻机理 

分 类 号：X524[环境科学与工程—环境工程]