John Chant toward the bud orient the nucleus and spindle for mitosis Figure 1 illustrates the key point that, once a yeast cell has initiated a bud early in the cell cycle, it has Cambridge, Massachusetts 02138 committed to its cleavage plane. The molecular manifestation of commitment is the formation of a ring of septin proteins (Cdc3p, Cdc10p, Cdc11p, and Cdc12p) be-For one cell to divide int...

The filamentous ascomycete Bipolaris maydis is a plant pathogen that causes corn leaf blight and has been used in cytological studies of sexual reproduction. In this fungus, when null mutants each septin are crossed with the wild-type strain, all ascospores derived from same asci show abnormal morphology. phenomenon was remarkably similar to event known as “ascus dominance” Neurospora crassa , ...