Etude de la Récupération Ultrastructurale des Jeunes Embryons de Marsilea vestita après un Choc Hypothermique
1989 年 54 巻 2 号 p. 237-243
詳細
1989 年 54 巻 2 号 p. 237-243
A cold shock treatment (16°C) on fertilized eggs of Marsilea vestita induces important ultrastructural alterations. The transfer of eggs from 16°C to 24°C allowed all organelles, plastids, mitochondria, endomembranes and ribosomes to recover a normal organization.
However, the return to optimal conditions (24°C) induces the formation of nuclear bodies and the individualization of bundles of microfilaments near the nucleolus.
Comparison of our obtained results and investigations concerning other materials indicates a great sensitivity to temperature of Marsilea eggs which rapidly react to weak variations.
