title: [Effects of EMA on activities of algal antioxidant enzymes].
abstract: Using allelochemicals produced by macrophytes to control harmful algae is a novel antialgal method. The present research investigated effects of the species-specific antialgal allelochemical EMA on activities of antioxidant enzymes of Chlorella pyrenoidosa and Chlorella vulagaris. The results showed that 0.25 mg/L of EMA increased activities of superoxide dismutase (SOD), peroxidase (POD)and catalase (CAT) of C. pyrenoidosa and C. vulagaris. With the increase of EMA concentrations, activities of the 3 enzymes of C. pyrenoidosa decreased sharply. The activity of SOD of C. pyrenoidosa decreased to 0 when the EMA were 4 mg/L. With the increase of EMA concentrations, activities of the 3 enzymes of C. vulagaris increased to as higher as 3-4 folders of that of the control set. The results gave hints to elucidate the species-specific antialgal mechanisms of EMA.
authors.affiliation: Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Feng-min
authors.initials: FM
authors.lastname: Li
authors.forename: Hong-ying
authors.initials: HY
authors.lastname: Hu
authors.forename: Yu-jie
authors.initials: YJ
authors.lastname: Men
authors.forename: Yu
authors.initials: Y
authors.lastname: Hong
authors.forename: Mei-ting
authors.initials: MT
authors.lastname: Guo
mesh_terms: D002374:Catalase / Q000378:metabolism; D002708:Chlorella / Q000187:drug effects* / Q000201:enzymology; D019684:Magnoliopsida / Q000737:chemistry; D010544:Peroxidases / Q000378:metabolism; D010675:Pheromones / Q000302:isolation & purification / Q000494:pharmacology*; D013482:Superoxide Dismutase / Q000378:metabolism*; D014876:Water Pollution / Q000517:prevention & control*
chemical_list: D010675:Pheromones; D010544:Peroxidases; D002374:Catalase; D013482:Superoxide Dismutase