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STUDY ON KINETICS OF GLUCOSE UPTAKE BY SOME SPECIES OF PLANKTON

STUDY ON KINETICS OF GLUCOSE UPTAKE BY SOME SPECIES OF PLANKTON
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摘要 The. rates of glucose uptake by some species of plankton were determined by 3H-glucose tracer method. Experimental results indicated that the observed glucose uptake at natural sea water concentrations by Platymonas subcordiformis and Brachionus plicatilis was principally a metabolic process fitted with the Michaelis-Menten equation in the range of adaptive temperatures. Heterotrophic uptake by Platymonas subcordiformis was mainly dependent on diffusion at high glucose levels. The uptake by Brachionus plicatilis showed active transport even at high glucose levels, indicating its high heterotrophic activity. The uptake rate by Anemia salina was lower, and its Vm/K ratio was lower than those of the other two species of plankton. The. rates of glucose uptake by some species of plankton were determined by 3H-glucose tracer method. Experimental results indicated that the observed glucose uptake at natural sea water concentrations by Platymonas subcordiformis and Brachionus plicatilis was principally a metabolic process fitted with the Michaelis-Menten equation in the range of adaptive temperatures. Heterotrophic uptake by Platymonas subcordiformis was mainly dependent on diffusion at high glucose levels. The uptake by Brachionus plicatilis showed active transport even at high glucose levels, indicating its high heterotrophic activity. The uptake rate by Anemia salina was lower, and its Vm/K ratio was lower than those of the other two species of plankton.
机构地区 Dept .of Oceanography
出处 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 1993年第1期8-15,共8页 中国海洋湖沼学报(英文版)
基金 Supported by the National Natural Science Foundation of China,No.3880644
关键词 GLUCOSE UPTAKE KINETICS PLANKTON glucose, uptake, kinetics, plankton
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参考文献15

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