Isolation, identification, and algicidal activity of aerobic denitrifying bacterium R11 and its effect on Microcystis aeruginosa.

Release time:2024-08-09  Hits:

• Affiliation of Author(s):环境与市政工程学院
• Journal:Water Science Technology
• Key Words:中文关键字：溶藻特性，反硝化，铜绿微囊藻，水华，英文关键字：algicidal characteristics, denitrification, Microc
• Abstract:Recently, algicidal bacteria have attracted attention as possible agents for the inhibition of algal water blooms. In this study, an aerobic denitrifying bacterium, R11, with high algicidal activity against the toxic Microcystis aeruginosa was isolated from lake sediments. Based on its physiological characteristics and 16S rRNA gene sequence, it was identified as Raoultella, indicating that the bacterium R11 has a good denitrifying ability at 30 WC and can reduce the concentration of nitrate-N completely within 36 h. Additionally, different algicidal characteristics against Microcystis aeruginosa were tested. The results showed that the initial bacterial cell density and algal cell densities strongly influence the removal rates of chlorophyll a. Algicidal activity increased with an increase in the bacterial cell density. With densities of bacterial culture at over 2.4 × 105 cell/mL, algicidal activity of up to 80% was obtained in 4 days. We have demonstrated that, with the low initial algal cell density (OD680 less than 0.220), the algicidal activity reached was higher than 90% after 6 days.
• Note:苏俊峰
• Co-author:邵思成,马放,张凯,郑胜晨
• First Author:wengang,huangtinglin,sujunfeng
• Indexed by:Journal paper
• Volume:卷：73
• Issue:期：11
• Page Number:页：2600-2607
• Translation or Not:no
• Date of Publication:2016-11-01