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Plant Physiology 56:300-306 (1975) © 1975 American Society of Plant Biologists Studies on the Secretion of Maize Root Cap SlimeI. Some Properties of the Secreted Polymer 1a Department of Botany and Department of Soils and Plant Nutrition, University of California, Berkeley, California 94720
The secreted slime from root cap cells of corn (Zea mays, cv. SX-17) was studied. Production of slime by excised root tips is stimulated by the addition of 40 mM sucrose or fucose and half-strength Hoagland's solution to the incubation medium. Secreted slime was recovered from aqueous solution by precipitation with ethanol. The polymer has a molecular weight greater than 2 x 106 daltons and a density of 1.63 g cm3. Protein is not present in material purified by density gradient centrifugation with cesium chloride. Fucose (39%) and galactose (30%) are the principle neutral sugars found in the purified polymer. Galacturonic and glucuronic acids, arabinose, xylose, mannose, and glucose are also present.
1 This work was supported by Grant GB 27468 from the National Science Foundation. This article has been cited by other articles:
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