The effects of pulse cycloheximide treatments on the light-induced recovery of mitotic divisions in antheridial filaments of chara vulgaris

摘要

Within the proliferative period of spermatogenesis in Chara vulgaris, the progression throughout successive cell divisions in antheridial filaments is greatly influenced by changes in photoperiodic conditions. The extended (4-day) period of total darkness brings about cell cycle arrest in the early G2 phase. The recovery of mitosis requires about 20 hours of exposition to light. In the present study, a series of 8 pulse incubations Of plants in cycloheximide (Cx; 2.5 mg/l, 2.5 h each pulse) were performed within the period elapsing till the resumption of Mitotic divisions.