Trans-Root Electrical Potential in Roots of Plantago media L. as Affected by Hydrostatic Pressure : The Induction of an O_2 Deficient Root Core
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概要
- 論文の詳細を見る
Excised roots of Plantago media L. were subjected to small hydrostatic pressure gradients. Pressure applied with a displacement pump easily extracted gas present in cortical lacunae consequent on the gas saturation deficit of the bathing solution. The temporary pressure treatment resulted in an irreversible decrease in the O_2 diffusion rate through the root tissue and consequently in O_2 deficient root cores. Therefore electrogenic pumps located at the symplast/xylem interface, i.e. in the centre of the root, were inhibited by pressure. The longitudinal distribution of the xylem pumps could be computed in Plantago media they are located in the basal parts of the root. The effect of pressure on the electrogenic xylem pumps demonstrated here should be taken into account when the process of ion transport from the root to the shoot is studied while the root is pressurized.
- 日本植物生理学会の論文
著者
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De Boer
Department Of Analysis And Toxicology Utrecht Institute Of Pharmaceutical Sciences (uips) Utrecht Un
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Prins H.
Department Of Plant Physiology Biological Centre University Of Groningen
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De Boer
Department Of Plant Physiology Biological Centre University Of Groningen
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