
%0 Journal Article
%A Pearson, C.J 
%T Fluxes of Potassium and Changes in Malate within Epidermis of <i>Commelina cyanea</i> and their Relationships with Stomatal Aperture
%J Functional Plant Biology
%D 1975/03/01
%V 2
%N 1
%P 85-89
%K 
%R https://doi.org/10.1071/PP9750085
%U https://www.publish.csiro.au/paper/PP9750085 
%X Stomatal apertures and concentrations of potassium, malate and sugars within the epidermis were measured during stomatal opening and closure; the location of K+ was also estimated by cobaltinitrite staining. The concentration of K+ in the epidermis as a whole did not change during stomatal opening and closure, but K+ migrated between epidermal and guard cells. Concentrations of sugars also remained constant. By contrast, there was a positive relationship between concentration of malate and aperture. These and other results emphasize an appreciable degree of isolation of the epidermis. 
