Plant Physiol. Journal of Pharmacology and Experimental Therapeutics
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Plant Physiology 70:1283-1289 (1982)
© 1982 American Society of Plant Biologists

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Isoxazolin-5-ones and Amino Acids in Root Exudates of Pea and Sweet Pea Seedlings 1

Yu-Haey Kuo, Fernand Lambein, Fumio Ikegami and Roger Van Parijs

Laboratory of Biochemistry, Faculty of Agricultural Sciences, Faculty of Medicine, State University of Ghent, Ledeganckstraat 45, B-9000 Ghent, Belgium, Laboratory of Physiological Chemistry, Faculty of Medicine, State University of Ghent, Ledeganckstraat 45, B-9000 Ghent, Belgium

Seeds of Pisum sativum L. cv Finale and Lathyrus odoratus L. cv Spencer were germinated aseptically in moistened sand in the dark. At several stages, the amino acid composition of the exudate and of the corresponding roots was analyzed. A number of common amino acids, including homoserine, were exuded by the growing seedling root in an early stage and were partly reabsorbed later. A number of uncommon amino acids, including several isoxazolin-5-one derivatives, uracil alanines, L-{gamma}-glutamyl-D-alanine, and {alpha}-aminoadipic acid were exuded at different rates.

1 Supported by a fellowship to Y. H. K. and a grant to F. L. from the Belgian National Science Foundation and by a cultural exchange fellowship from the Belgian Ministry of National Education and Dutch Culture to F. I.




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[Abstract] [Full Text] [PDF]


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