Effect of substituted ureas on plant cells II. Ultrastructural effects of isoproturon on the root meristem cells of Allium cepa.

Electron microscopic studies were conducted on the root meristem cells of Allium cepa to find out the effect of isoproturon on the organelles involved in cell division. The action of isoproturon was apparently observed on the nucleus and microtubules of these cells. Electron microscopic observations are consistent with that of light microscopic studies showing various mitotic aberrations. These observations indicate effect of isoproturon on microtubular function, though further evidence is required to explain whether microtubular protein polymerization is the mechanism of such alterations.