Effects of germanium on photosynthetic pigments of four species in microalgae
微量元素锗对四种微藻光合色素的影响

Four microalgae, Spirulina platensis,Dunaliella salina,Dicrateria zhanjiangensis and Nannochloropsis sp.were cultured in a solution with concentration of 10 mg/dm 3 germanium for 10 d (for S.platensis ) and 16d(for the other algae)to study photosynthetic pigments in these algae.The results showed that photosynthetic pigments and their contents in these four algae were changed greatly,some increased or formed and the others decreased or disappeared,the changes of the pigments varied greatly among these algae.In addition,the effect and its mechanism of germanium on photosynthetic pigments of algae were also discussed.