Research on Growth Characteristics and Algicidal Effects of Bacillus subtilis

doi:10.13560/j.cnki.biotech.bull.1985.2017-0013

Abstract

Abstract: Algicidal microorganisms rapidly kill cyanobacteria，and subsequently the purpose of controlling algal bloom in water bodies is achieved. To investigate the inhibition of Bacillus subtilis against Microcystis aeruginosa and Chlorell，the Bacillus subtilis cultures were used to study its inhibition and mode of action against these two kinds of algae. The MDA，GSH，SOD and CAT activity in M. aeruginosa when cultured with B. subtilis were measured. The results showed that B. subtilis had a solid adaptability to environment and inhibited the growth of the algae by secreting extracellular substances. The chlorophyll a and protein contents of M. aeruginosa in treated groups were significantly lower than that in the control group，while the MDA and GSH contents as well as the SOD and CAT activity increased obviously when M. aeruginosa was cultured with B. Subtilis.

Key words: Bacillus subtilis, algae, inhibition, growth characteristics

CHENG Xin ,LI Kun-tai, HUANG Lin. Research on Growth Characteristics and Algicidal Effects of Bacillus subtilis[J]. Biotechnology Bulletin, 2017, 33(7): 120-125.

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