par Tencer, Renée ;Brachet, Jean
Référence Differentiation, 1, 1, page (51-64)
Publication Publié, 1973
Article révisé par les pairs
Résumé : The effects of BUdR on morphogenesis in Acetabularia mediterranea and on embryonic development (sea urchin, tunicate and amphibian embryos) have been studied. In the presence of BUdR, cap development is affected in both the anucleate and nucleate fragment of the unicellular alga Acetabularia mediterranea. In the nucleate fragment, the initiation of cap formation can be inhibited. BUdR exerts various inhibitory effects on embryonic development. Modifications of sensitivity to BUdR during development are also observed: in Paracentrotus, a change in sensitivity towards the drug occurs at the 16 cell stage, while in amphibian eggs, a modification can be shown after the gastrula stage. The significance of these observations is discussed.