Regolazione e tolleranza per i metalli in Euglena gracilis
Albergoni, Vincenzo ; Piccinni, Ester
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 66 (1979), p. 209-213 / Harvested from Biblioteca Digitale Italiana di Matematica
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Some data are reported on the biological effects of an excess of copper and cadmium on axenic cultures of Euglena gracilis. Copper does not affect growth, whereas cadmium inhibits it. Copper is excreted by the cells linked to a glycopeptide of a low molecular weight and cadmium is sequestred by a protein of high molecular weight. This protein is not excreted and therefore cadmium is more toxic than copper. The data fit a regulatory model that can be applied also to other compounds like thioneins.

Publié le : 1979-03-01
@article{RLINA_1979_8_66_3_209_0,
     author = {Vincenzo Albergoni and Ester Piccinni},
     title = {Regolazione e tolleranza per i metalli in Euglena gracilis},
     journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti},
     volume = {66},
     year = {1979},
     pages = {209-213},
     language = {it},
     url = {http://dml.mathdoc.fr/item/RLINA_1979_8_66_3_209_0}
}

Albergoni, Vincenzo; Piccinni, Ester. Regolazione e tolleranza per i metalli in Euglena gracilis. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 66 (1979) pp. 209-213. http://gdmltest.u-ga.fr/item/RLINA_1979_8_66_3_209_0/

[1] Aaronson, S. (1977) - V Congr. of Protozool., New York, n. 39.

[2] Aaronson, S. (1973) - Ochromonas: a model system for the study of phytoflagellate and algae secretion into environment. «Bull. Ecol. Res. Commun» (Stockholm), 17, 367-370.

[3] Cherian, M.G. and Goyer, R.A. (1978) - Metallothioneins and their role in metabolism and toxicity of metals, «Life Sciences», 23, 1-10.

[4] Dubois, M., Gilles, K.A., Hamilton, J.K., Rebers, P.A. and Smith, F. (1956) - Colorimetric method for determination of sugars and related substances. «Ann. Chem.», 28, 350-356.

[5] François, C., Marshall, R.D. and Neuberger, A. (1962) - Carbohydrates in protein. 4. The determination of mannose in hen's—egg albumin by radioisotope dilution. «Biochem. J.», 83, 335-341.

[6] Kojima, Y. and Kägi, J.H.R. (1978) - Metallothionein. «Trends in Biochem. Science», 3, 90-93.

[7] Lowry, O.H., Rosebrough, N.Y., Farr, A.L. and Randall, R.Y. (1951) - Protein measurement with the Folin phenol reagent. «J. Biol. Chem.», 193, 265-275.

[8] C.F. Mills ed. (1970) - Trace element metabolism in animals—1, E. and S. Livingstone, Edinburgh and London.

[9] Steemann Nielsen, E. and Wium, S. (1970) - Copper ions as poison in the sea and in freshwater. «Marine Biology», 6, 93-97.

[10] Underwood, E.J. (1971) - Trace elements in human and animal nutrition. Academic Press, New York-London.