The Detrimental Effect of High Salinity on the Growth and Microcystins Contamination of Microcystis aeruginosa

The occurrence of cyanobacterial species, especially toxic ones, poses a great threat to coastal and estuary areas. In this study, the toxigenic Microcystis aeruginosa (M. aeruginosa) FACHB-905 was exposed BG-11 medium with different salinities (1, 4, 7, 10 15 ppt) investigate physiological responses species in terms oxidative stress, chl fluorescence microcystins (MCs) contamination. results showed that low salinity (≤7 favored electron transfer photosystem II, which promoted growth photosynthesis M. induced MCs production. However, increased (≥10 suppressed aggravated stress strain. Salinity ppt reduced contamination caused irreversible damage photosynthetic system aeruginosa, leading lysis death algal cells. These indicated changes exerted important regulations on may provide reference for risk assessment harmful