We have compared the effects of the auxin, indole-3-acetic acid (IAA) with that of other weak acids on the plasma-membrane potential of oat (Arena sativa L.) coleoptile cells. Cells treated with ] gM IAA at pH 6 depolarize 20-25 mV in ]0-12min, but they then repolarize, until by 20-25 rain their pot
Separation of tonoplast and plasma membrane potential and resistance in cells of oat coleoptiles
β Scribed by George W. Bates; Mary Helen M. Goldsmith; Timothy H. Goldsmith
- Publisher
- Springer
- Year
- 1982
- Tongue
- English
- Weight
- 930 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0022-2631
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π SIMILAR VOLUMES
Microelectrodes were used to demonstrate two electrical responses which occur in oat (Arena sativa L.) coleoptile parenchyma-cells during exposure to red light. The membrane potential of these cells depolarized 5-10 mV in several seconds in red light and repolarized more slowly in far-red light. By
The plasma-membrane H Β§ (EC 3.6.1.35) of maize (Zea mays L.) coleoptiles and enclosed leaves has been localized at the optical-microscope level utilizing paraffin sections and a specific monoclonal antibody. Both in coleoptiles and in leaves the stomatal guard cells and the phloem of vascular bundle
The cytoplasm of subepidermal parenchyma cells of Arena sativa L. coleoptiles was collected at one end of the cell by centrifugation. The electrical properties of both plasmalemma and tonoplast were then examined with microelectrodes inserted into both cytoplasm and vacuole of the same cell. The inp
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