Plant allelochemicals inhibit the growth and colony formation of Microcystis  

作　　者：Xiao MA Xueli WANG Shaoqi ZHOU Jianrong MA Jingfu WANG Jingan CHEN Yan ZENG Qiao CHEN Boqiang QIN Ming LI 

机构地区：[1]College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China [2]College of Natural Resources and Environment,Northwest A&F University,Yangling 712100,China [3]College of Liquor and Food Engineering,Guizhou University,Guiyang 550025,China [4]Key Laboratory of Reservoir Environment,Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,China [5]State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China [6]State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China

出　　处：《Journal of Oceanology and Limnology》2024年第6期1839-1852,共14页海洋湖沼学报（英文）

基　　金：Supported by the Chongqing Water Conservancy Bureau Project(No.5000002021BF40001);the National Natural Science Foundation of China(No.41601537);the Science and Technology Support Project of Guizhou Province,China(No.[2022]General 148)。

摘　　要：Genus Microcystis is the most common dominant species of bloom-forming cyanobacteria.Growth and colony formation are critical processes for the occurrence of Microcystis blooms.To identify allelochemicals that can inhibit the growth and colony formation of Microcystis,Microcystis aeruginosa was cultivated and treated with various concentrations of gramine,catechol,berberine,and sanguinarine in laboratory.Results indicate that the growth,colony formation,and extracellular polysaccharides(EPS)content of Microcystis were significantly inhibited when treated with gramine,catechol,and berberine in appropriate concentrations at high iron level(6.8 mg/L).Microcystis growth was inhibited and colony formation and EPS content were promoted when treated with sanguinarine at high iron level.These findings suggest that cyanobacterial blooms can be controlled by regulating the input of gramine,catechol,and berberine.Furthermore,this study revealed that plant allelochemicals could affect the growth and morphology of algae in aquatic ecological restoration,which may be potentially important for improving water quality.

关 键 词：algal bloom MICROCYSTIS COLONY plant allelochemicals ecological restoration 

分 类 号：X52[环境科学与工程—环境工程]