摘要
The availability of three dissolved organic phosphorus （DOP） compounds as nutrient sources for experimentalcultare of three algae was studied. Results indicated that these compounds could be utilized byalgae, and that dissolved inorganic phosphorus （DIP） was first to be uptaken when various forms ofphosphorus （DIP and DOP） co-existed. Dicrateria zhanjiangensis’ uptake of sodium glycerophosphatewas faster than that of D-ribose-5-phosphate. The increase of sodium glycerphosphate had little effecton the maximum uptake rate(V<sub>max</sub>) of Chlorella sp., but increased the semisaturation constant（K<sub>s</sub>） remarkably;the photosynthesis rates（PR） of Dicrateria zhanjiangensis and Chlorella sp. were rarely affected byusing various forms of phosphorus in the culture experiments. The possible DOP pathways utilizedby algae are discussed.
The availability of three dissolved organic phosphorus (DOP) compounds as nutrient sources for experimental culture of three algae was studied. Results indicated that these compounds could be utilized by algae, and that dissolved inorganic phosphorus (DIP) was first to be uptaken when various forms of phosphorus (DIP and DOP) co-existed. Dicrateria zhanjiangensis' uptake of sodium glycerophosphate was faster than that of D-ribose-5-phosphate. The increase of sodium glycerophosphate had little effect on the maximum uptake rate(Vmax) of Chlorella sp., but increased the semisaturation constant(Ks) remarkably; the photosynthesis rates(PR) of Dicrateria zhanjiangensis and Chlorella sp were rarely affected by using various forms of phosphorus in the culture experiments. The possible DOP pathways utilized by algae are discussed.
基金
This work was supported by a grant from Fund of Doctorial Programmes of State Educational Commission of China
