Translocation of organic compounds in sunflower III. Effect of oligomycin, ouabain and phlorizin on translocation of sugars |
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Authors: | Shiroya Michi; Kura Mariko |
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Institution: | Department of Biology, Faculty of Science, Tokyo Metropolitan University Setagaya, Tokyo, Japan |
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Abstract: | The apical portions of intact sunflower leaves were infiltratedwith 14C-glucose, 14C-fructose or 3-O-methyl-14C-glucose andthe basal portions were treated with inhibitors. The effects of oligomycin, ouabain and phlorizin on translocationwere studied. Inhibition of translocation from the basal portionof the leaf to the stem was determined by experiments usingoligomycin. In other experiments, each leaf was divided intothree parts. The apical portion was fed with 14C-glucose andthe basal part treated with oligomycin. The effects of oligomycinon the distribution of 14C-glucose, 14C-sucrose, 14C-fructoseand 14C-sugar phosphate along the three parts of the leaf wereinvestigated. Inhibition of sucrose synthesis in the leavestreated with oligomycin was observed. Oligomycin inhibited 14Ctranslocation from the leaf.
1Present address: Department of Biology, Faculty of Science,Science University of Tokyo, Kagurazaka, Shinjuku-ku, Tokyo,Japan. (Received August 17, 1978; ) |
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