Effect of Aqueous Fluoride Solutions on Respiration of Intact Bush Bean Seedlings. I. Inhibition and Stimulation of Oxygen Uptake

Applegate, Howard G., Donald F. Adams, and Roy C. Carriker. (Washington State U., Pullman.) Effect of aqueous fluoride solutions on respiration of intact bush bean seedlings. I. Inhibition and stimulation of oxygen uptake. Amer. Jour. Bot. 47(5): 339—345. Illus. 1960.–Intact bush bean seedlings were infiltrated with 1 × 10–1, 1 × 10–2, 1 × 10–3, and 1 × 10–4 M fluoride. A linear relationship was found to exist between the fluoride concentrations of the infiltrating solutions and tissue fluoride. The higher fluoride concentrations inhibited oxygen uptake, whereas lower fluoride concentrations accelerated oxygen uptake. Both the inhibition and acceleration of oxygen uptake by fluoride were modified by light, CO2, and presence or absence of chlorophyll.