Abstract:An algae-lysing bacterium strain named J1 was isolated from an eutrophic pond around Huangdao. The lytic efficiency and performing mode of bacterial lysing of Microcystis aeruginosa were studied. Influences of the bacterial culture medium and the growth phases of bacterium and algae on the antialgal effect were also studied, and then the bacterium strain was physiologically and biochemically identified. The results showed that algae growth was relatively stable with adding beef-protein medium without bacterium strain when the volume ratio of medium to algae solution was 6%. However, more than 87% of Microcystis aeruginosa had been removed by 9 days after adding the beef-protein medium with initial bacterium concentration of 6×107 cfu/mL under the same volume ratio. The antialgal efficiency was different to the various growth phages of bacterium and algae. J1 in log growth phase showed the best algae-lysing performance. The removal rate of algae in stable phrase was the lowest under the treatment with J1 in log growth phase. J1 excreted algae-lysing substance to inhibit the algae growth indirectly, and this active inhibitors were heat-stable. According to the morphological and physiological-biochemical characteristics, bacterium J1 was identified as Bacillus.
晋利, 刘兆普, 赵耕毛, 汪辉, 陈雷. 一株溶藻细菌对铜绿微囊藻生长的影响及其鉴定[J]. 中国环境科学, 2010, 30(2): 222-227.
JIN Li, LIU Zhao-Pu, ZHAO Geng-Mao, WANG Hui, CHEN Lei. Effects of an algae-lysing bacterium on the growth of Microcystis aeruginos and its identification. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(2): 222-227.