Mechanisms of Guard Cell Action

Abstract
The prominent hypotheses concerning stomatal operation are discussed in relation to present knowledge. Recent experimental findings, under the light microscope, of high levels of protoplasmic streaming in guard cells, completely reversible opening and closing of stomata, and changes in neutral red accumulation, are presented. Preliminary electron microscopy of the guard cell is also presented. A simplified scheme shows the probable biochemical changes involved in opening and closing Vicia faba stomata. The scheme emphasizes the lack of specificity of certain inhibitors of guard cell activity.

This publication has 16 references indexed in Scilit: