Utilization of phosphate compounds for growth ofTetrahymena |
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| Authors: | L Rasmussen H Toftlund M Florin-Christensen J Florin-Christensen |
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| Institution: | (1) Institute of Anatomy and Cytology, and Department of Chemistry, Odense University, DK-5230 Odense, Denmark;(2) Present address: Laboratorio de Invertebrados I, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pab. II 4oP, 1428 Buenos Aires, Argentina |
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| Abstract: | Summary Taking advantage of a synthetic nutrient medium, we have studied which compounds phosphate-starvedTetrahymena thermophila can use as phosphate sources for growth and cell multiplication. Ortho-, trimeta- and  -glycero-phosphate are good sources for both the wild type and a food-vacuoleless mutant; phosphorylcholine is used only by the wild type, and 2-aminoethyl phosphonic acid fails to serve as a phosphate source. Since at least two phosphatases are found in the extracellular fluid these results indicate thatTetrahymena can make use of extracellular digestion of nutrients. |
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| Keywords: | Tetrahymena growth studies utilization of organic phosphate role of phagocytosis |
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