2013•Unpublished venueRequires access

Effects of Cu~(2+) on the Growth and Chlorophyll Fluorescence of Two Species of Marine Microalgae

Wu Bo Zhi

Abstract

The changes of the fluorescence parameters of Dicrateria zhanjiangensis and Isochrysis galbana MACC/H59 exposed to Cu2+ were investigated by means of the chlorophyll fluorescence technology(Water PAM),and the growth of these two species of marine microalgae was observed.The results showed that all fluorescence parameters(Fv/Fm,Fv/F0,Yield and ETR) of Dicrateria zhanjiangensis and Isochrysis galbana MACC/H59 decreased under Cu2+ stress.The growth of cell density for Dicrateria zhanjiangensis and Isochrysis galbana MACC/H59 decreased under Cu2+ stress,and it can be expressed as Dicrateria zhanjiangensis Isochrysis galbana MACC/H59 in the 24h while it can be expressed as Isochrysis galbana MACC/H59 Dicrateria zhanjiangensis during 48h to 96h.The toxicity of Dicrateria zhanjiangensis and Isochrysis galbana MACC/H59 increased with the increase of exposure time.

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Key concepts: Isochrysis galbana, Fluorescence, Botany, Chlorophyll, Chemistry, Biology, Algae, Food science