Allelopathic effects of submerged macrophyte Chara vulgaris on toxic Microcystis aeruginosa

作者：Zhang T T; He M; Wu A P; Nie L W^*

来源：Allelopathy Journal, 2009, 23(2): 391-401.

• Allelopathy
• allelochemicals
• Chara vulgaris
• Microcystis aeruginosa

Microcystis aeruginosa is major bloom-forming cyanobacteria in eutrophic freshwater and the toxic microcystins secreted by it have proved hazardous to aquatic environment. In this study, we investigated the allelopathic effects of Chara vulgaris on growth and development of toxic M. aeruginosa. The allelochemicals of C vulgaris were purified and identified and their allelopathic effects were studied in cyanobacterial assays. We found that reciprocal allelopathy exists between the M. aeruginosa and C. vulgaris. The C. vulgaris allelochemicals included 3 fatty acids [(Z,Z)-9,12 -octadecadienoic (ODEA, 18:2), tetradecanoic (TDA, 14:0) and hexadecanoic acids (HAD,16:0)], which inhibited the growth of toxic M. aeruginosa and the ODEA proved most potent. The combined activity of these three fatty acids exerted synergistic inhibitory effects on the growth of toxic M. aeruginosa. We have found that C. vulgaris and its allelochemicals may control the M. aeruginosa bloom and it may be useful to recover the eutrophic waters.

• 出版日期2009-4
• 单位安徽师范大学