Free Amino Acid Composition of Phloem Sap and Growing Fruit of Lycopersicon esculentum |
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| Authors: | Valle, Estela M. Boggio, Silvana B. Heldt, Hans W. |
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| Affiliation: | 1 Programa Multidisciplinario de Biologa Experimental (PROMUBIE, CONICET), División Biología Molecular, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR Suipacha 531, 2000 Rosario, Argentina
2 Institut für Biochemie der Pflanze der Universität Göttingen Untere Karspule 2, 37073 Göttingen, Germany |
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| Abstract: | Pure phloem sap of tomato leaves was collected by stylectomy.Glutamine and glutamate were the predominant free amino acidstranslocated by the phloem stream. In developing fruits glutaminecontent increased significantly, reaching 35% of the total freeamino acids. Comparison in the amino acid composition betweenthe two tissues are discussed. (Received October 6, 1997; Accepted January 27, 1998) |
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