广东海洋大学学报2024，Vol.44Issue(1)：76-83,8.DOI:10.3969/j.issn.1673-9159.2024.01.009
Serratia sp.对铜绿微囊藻、斜生栅藻的溶藻效果
Algae-lysing Effect of Algicidal Bacterium Serratia sp.on Microcystis aeruginosa and Scenedesmus obliquus
摘要
Abstract
[Objective]The aim of this paper is to investigate the algae-lysing effect of an algaolytic bacterium S6(Serratia sp.)on dominant cyanobacteria and green algae in eutrophic water.[Method]The algaolytic bacterium S6(Serratia sp.,accession No.KY462187)was isolated from the eutrophic water;the bacterium at different concentrations was added to the algal solutions of Microcystis aeruginosa,Scenedesmus obliquus,and a mixture of the two in the ratios of 1∶1(Hereinafter referred to as"mixed algae").The algal biomass,concentration of chlorophyll a,NH3-N and TP of the experimental systems were measured,and the algae-lysing effect on different algae and effect on nitrogen and phosphorus of the experimental systems were analyzed in a fortnight.Then,algae-lysing products were analyzed by spectral technology of these experimental systems.[Result and Conclusion]The strain S6 had a desirable algae-lysing effect on M.aeruginosa and S.obliquus under monoculture and coculture,the higher the concentrations of bacterium,the better the algae-lysing effect,dissolving M.aeruginosa,S.obliquus and the mixed algae under coculture with a removal rate of 89.4%,80%and 78.6%in the three original bacterial suspensions.Furthermore,the concentrations of NH3-N and total phosphorus(TP)of the three experimental systems existed fluctuations significantly,those of the M.aeruginosa decreased by 21.24 and 6.21 mg/L,those of the S.obliquus decreased by 13.19 and 7.54 mg/L,those of the mixed algae decreased by 10.81 and 11.85 mg/L.The algae-lysing products of the three experimental systems were analyzed by infrared spectroscopy,ultraviolet spectroscopy and three-dimensional fluorescence spectroscopy scanning,and it was found that the algae-lysing products of M.aeruginosa mainly contained tryptophan-like,fulvic acid-like and humic acid-like substances,while the algae-lysing products of S.obliquus mainly contained tryptophan-like and humic acid-like substances.关键词
铜绿微囊藻/斜生栅藻/溶藻菌/Serratia sp./溶藻产物/光谱分析技术Key words
Microcystis aeruginosa/Scenedesmus obliquus/algicidal bacteria/Serratia sp./algae-lysing products/spectral analysis techniques分类
资源环境引用本文复制引用
洪桂云,汪涛,朱慧,马少雄..Serratia sp.对铜绿微囊藻、斜生栅藻的溶藻效果[J].广东海洋大学学报,2024,44(1):76-83,8.基金项目
安徽省自然科学基金(No.1908085141ME) （No.1908085141ME）
安徽建筑大学校级教研项目(No.2021jy27) （No.2021jy27）
