抄録
The fission yeast Schizosaccharomyces pombe grows at the cell ends .F-actin was found to be localized at the cell ends, and correlated with polarized growth of the cell wall.Our studies by three-dimensional reconstruction of serial sction electron microscopy demonstrated the presence of vesicles and filasomes at the cell ends. Growth arrest in distilled water and cytochalasin treatment caused the remarkable changes of actin distribution as well as cytoplasmic organelles. These studies indicated the close relationship between actin and cell wall formation in the polarized growth. Recent studies on tip growth in filamentous fungi and on the morphological mutants in fission yeast were reviewed.