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H⁺ Fluxes in Excised Samanea Motor Tissue: II. Rhythmic Properties
Ana Iglesias and Ruth L. Satter
Vol. 72, No. 2 (Jun., 1983), pp. 570-572
Published by: American Society of Plant Biologists (ASPB)
Stable URL: http://www.jstor.org/stable/4268070
Page Count: 3
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Homogeneous groups of cells were excised at regular intervals from opposing (extensor and flexor) motor tissue of Samanea saman (Jacq) Merrill maintained in white light for 34 hours. H+ fluxes between the tissue and bathing solution were then monitored during 30 minutes of darkness. Flux rates in both cell types vary with circadian rhythms. Flexor cells secrete H+ to the medium during two-thirds of the circadian cycle and take up H+ during the remainder of the cycle, while extensor cells take up H+ from the medium during the entire cycle.
Plant Physiology © 1983 American Society of Plant Biologists (ASPB)