Abstract
A study of the effects of altered calcium and magnesium levels on the capacities of Acetabularia plants to elongate and to form whorls or caps revealed sharp transitions of regenerative state over small concentration changes of external calcium at both reduced and elevated levels. Cobalt and lanthanum, which interfere with calcium fluxes across membranes, also affect regeneration and morphogenesis with sharply defined transition ranges. It is shown that these effects are localized at the growing tip. The nature of the mechanisms involved in the transitions from one morphogenetic state to another in the regenerative process is considered.
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Abbreviations
- [Ca2+]0 :
-
external concentration of calcium ions
- [Mg2+]0 :
-
external concentration of magnesium ions
References
Baker, P.F. (1972) Transport and metabolism of calcium ions in nerve. Prog. Biophys. Biophys. Chem. 24, 177–322
Changeux, J.-P., Tung, Y., Kittel, C. (1967) On the cooperativity of biological membranes. Proc. Natl. Acad. Sci. USA 57, 335–341
Christ-Adler, M., Bentrup, F.W. (1976) Effect of K+ and Cl− ion gradients upon apex regeneration in Acetabularia mediterranea. Planta 129, 91–93
Gibor, A. (1977) The role of cell apex in elongation of Acetabularia. Protoplasma 93, 101–107
Gilkey, J.C., Jaffe, L.F., Ridgeway, E.B., Reynolds, G.T. (1978) A free calcium wave traverses the activating egg of the Medaka, Oryzias latipes. J. Cell. Biol. 76, 448–466
Goodwin, B.C., Pateromichelakis, S. (1979) The role of electrical fields, ions and the cortex in the morphogenesis of Acetabularia. Planta 145, 427–435
Lateur, L. (1963) Une technique de culture pour l'Acetabularia mediterranea. Rev. Algol. 1, 26–37
Meech, R.W. (1974) Calcium influx induces a post-tetanic hyper-polarization in Aplysia neurones. Comp. Biochem. Physiol. 48A, 387–395
Novak, B., Bentrup, F.W. (1972) An electrophysiological study of regeneration in Acetabularia mediterranea. Planta 108, 227–244
Novak, B., Sironval, C. (1975) Inhibition of regeneration of Acetabularia mediterranea enucleated posterior stalk segments by electrical isolation. Plant Sci. Lett. 5, 183–199
Puiseux-Dao, S. (1970) Acetabularia and cell biology. Logos Press
Reuter, H. (1973) Divalent cations as charge carriers in excitable membranes. Prog. Biophys. Mol. Biol. 26, 1–43
Sato, T. (1962) Effect of potassium, calcium, and magnesium ions on the protoplasmic streaming in Acetabularia calyculus. Bot. Mag. 74, 384–390
Stone, G.C., Hammerschlag, R. (1981) Differential effects of cobalt on the initiation of fast axonal transport. Cell Mol. Neurobiol. 1, 1–17
Weakly, J.N. (1973) The action of cobalt ions on neuromuscular transmission in the frog. J. Physiol. 234, 597–612
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Goodwin, B.C., Skelton, J.L. & Kirk-Bell, S.M. Control of regeneration and morphogenesis by divalent cations in Acetabularia mediterranea . Planta 157, 1–7 (1983). https://doi.org/10.1007/BF00394533
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DOI: https://doi.org/10.1007/BF00394533