Enhancement of Phloem Exudation from Cut Petioles by Chelating Agents
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Enhancement of Phloem exudation from cut petioles by chelating agents.
The photosynthetic assimilates in leaves of Perilla crispa attached to the plant were labeled by treating the leaves with (14)CO(2). When subsequently detached, these leaves exuded a negligible amount of radioactivity from the cut petiole into water. Ethylenediaminetetraacetate (EDTA), citric acid, and ethyleneglycol-bis (beta-aminoethyl ether) N,N'-tetraacetate greatly increased exudation of l...
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The successful design of orally active non-toxic selective metal chelators is a much sought-after goal. In order to identify an ideal chelator for clinical use, a range of specifications must be considered, such as metal selectivity and affinity, kinetic stability of the complex, bioavailability and toxicity. In this overview the comparative properties of ligands capable of endowing complexes w...
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The composition of phloem sap has been investigated in Ricinus communis var. gibsonii, grown for 2 weeks on nutrient solution of low and high potassium content (K(1) and K(2)). Diagonal cuts were made in the bark of the stem resulting in the exudation of clear droplets which mainly consisted of phloem sap. Although the plants at low K (0.4 mm) and high K (1 mm) did not differ in growth, leaf ar...
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Fraenkel-Conrat, H. & Singer, B. (1956). Arch. Biochem. Biophy8. 65, 296. Jagannathan, V. & Luck, J. M. (1949). J. biol. Chem. 179, 569. Koshland, D. E. (1959). In Symposium on the Mechaniam of Enzyme Reactione. J. Gen. (Jomp. Phys. Suppl. 1. Koshland, D. E., Ray, W. J. & Erwin, M. J. (1958). Fed. Proc. 17, 1145. Lowry, C., Keller, P. J. & Taylor, J. F. (1956). Biochim. biophys. Acta, 20, 115. ...
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The biodegradable chelating agents [S,S]-ethylenediaminedisuccinic acid (EDDS), citric acid and the low biodegradable chelating agent ethylenediaminetetraacetic acid (EDTA) were investigated for their applicability for the removal of lead from soil by soil washing and electrokinetic processing. In the soil washing tests at 298K, the removal efficiency of lead with EDDS and EDTA was high in the ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1974
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.53.1.96