Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Absorption directe d'un acide aminé par Phoronis psammophila


Experiments on 14C-valine uptake by Phoronis psammophila Cori revealed polyphasic kinetics of uptake at external concentrations higher than 1.5 μM. This uptake displays seasonal variations, with a maximum in summer. In winter, increases in uptake are induced by preincubation in high amounts of amino-acids in the external medium; such increases are, however, inhibited by the action of cycloheximide.

This is a preview of subscription content, log in to check access.

Littérature citée

  1. Christensen, H.N.: Some special kinetic problems of transport. Adv. Enzymol. 32, 1–20 (1969)

  2. Emig, C.C.: Régénération de la région antérieure de Phoronis psammophila Cori (Phoronida). Z. Morph. Tiere 73, 117–144 (1972)

  3. Ferguson, J.C.: Uptake and release of free aminoacids by starfishes. Biol. Bull. mar. biol. Lab., Woods Hole 141, 122–129 (1971)

  4. Florkin, M.: Nitrogen metabolism. Chem. Zool. 4, 147–160 (1969)

  5. Lowry, O.H., N.J. Rosebrough, A.L. Farr and R.J. Randall: Protein measurement with folin phenol reagent. J. biol. Chem. 193, 265–275 (1951)

  6. Oglesby, L.C.: Inorganic components and metabolism. Chem. Zool. 4, 211–301 (1969)

  7. Southward, A.J. and E.C. Southward: Observations on the role of dissolved organic compounds in the nutrition of benthic invertebrates. III. Uptake in relation to organic content of the habitat. Sarsia 50, 29–46 (1972)

  8. Stephens, G.C.: Dissolved organic matter as a potential source of nutrition for marine organisms. Am. Zool. 8, 95–106 (1968)

  9. Taylor, A.G.: The direct uptake of amino acids and other small molecules from sea water by Nereis virens Sars. Comp. Biochem. Physiol. 29, 243–250 (1969)

  10. Tiffon, Y. et M. Daireaux: Phagocytose et pinocytose par l'ectoderme et l'endoderme de Cerianthus lloydi Gosse. J. exp. mar. Biol. Ecol. 16, 155–165 (1974)

Download references

Author information

Additional information

Communicated by J.M. Pérès, Marseille

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Emig, C.C., Thouveny, Y. Absorption directe d'un acide aminé par Phoronis psammophila . Mar. Biol. 37, 69–73 (1976).

Download citation