Fluxes of Potassium and Changes in Malate within Epidermis of Commelina cyanea and their Relationships with Stomatal Aperture
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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.
1971 ◽
Vol 24
(3)
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pp. 689
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1972 ◽
Vol 25
(5)
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pp. 877
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1942 ◽
Vol 61
(3)
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pp. 233-266
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2020 ◽
Vol 19
(1)
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pp. 88-98
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