Selective control of cyanobacteria by surfactin-containing culture broth of Bacillus subtilis C1

被引:88
作者
Ahn, CY [1 ]
Joung, SH [1 ]
Jeon, JW [1 ]
Kim, HS [1 ]
Yoon, BD [1 ]
Oh, HM [1 ]
机构
[1] Korea Res Inst Biosci & Biotechnol, Environm Biotechnol Lab, Taejon 305333, South Korea
关键词
Bacillus subtilis; cyanobacteria; Microcystis aeruginosa; selectivity; surfactin;
D O I
10.1023/A:1024508927361
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Of several types of chemical surfactants and biosurfactants, only the culture broth of Bacillus subtilis C1 containing surfactin at 10 mg l(-1) completely inhibited the growth of Microcystis aeruginosa, a bloom-forming cyanobacterium in highly eutrophic lakes. The broth with 10 mg surfactin l(-1) also removed 85% of the maximally grown M. aeruginosa (chlorophyll-a concentration, 1000 mug l(-1)) within 2 d, and the removal efficiency was enhanced by Ca2+ over 1 mM. The growth of Anabaena affinis, another bloom-forming cyanobacterium, was also inhibited about 70% with surfactin at 10 mg l(-1) broth. However, the effect of the broth was delayed over 3 d in the green algae, Chlorella vulgaris and Scenedesmus sp., and was negligible in a diatom, Navicula sp., indicating the potential for the selective control of cyanobacterial blooms.
引用
收藏
页码:1137 / 1142
页数:6
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