THE CELL PLATE IN BACTERIAL CYTOKINESIS

Abstract
The cell plate is formed during nuclear division, and just prior to cross septation. At early stages it is stained by the crystal violet nuclear stain which does not stain cell wall material; mature cross septa are not stained by the nuclear stain. The young cell plate is not stained by the cell wall stains, but the mature cell plate is deeply stained by the cell wall stains. Cell plates of intermediate age may be stained lightly. Phase microscope studies of living cultures show definite evidence of a cell plate which is formed prior to and is replaced by the cross wall septum.