INHIBITORY EFFICACY OF WHITE-ROT FUNGUS AGAINST HARMFUL FRESHWATER ALGAL BLOOM SPECIES

摘要

Eutrophication and frequent algal blooms have become serious ecological problems. White-rot fungi have been considered as possible microorganisms for controlling algal blooms. In this study, Cryptomonas obovata FACHB-1301, Oscillatoria sp. FACHB-1083, and Scenedesmus quadricauda FACHB-507 co-cultured with the white-rot fungus Phanerochaete chrysosporium. All algal cells were damaged within 48 h of coculture. P. chrysosporium apparently decreased the chlorophyll-a content, dehydrogenase activity, and soluble protein content but increased the malondialdehyde content of the algal cells. These results indicate that the algae were greatly inhibited and severely damaged by the fungus. In conclusion, P. chrysosporium can effectively remove algal cells and inhibit algal blooms.