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Annals of Botany 74: 209-215, 1994
© 1994 Annals of Botany Company

Developmental Variation of the Neurotoxin, ß-N-Oxalyl-L-{alpha},ß-diamino propionic acid (ODAP), in Lathyrus sativus

Getachew Addis and R. K.J. Narayan

Institute of Biological Sciences, University of Wales, Aberystwyth, Dyfed SY23 3DA, UK

Several species of the tribe Viceae (Leguminosae) produce non-protein amino acids that are toxic to man and animals. The neurotoxin ß-N-oxalyl-L-{alpha},ß-diamino propionic acid (ODAP) in cultivated Lathyrus sativus causes human neurolathyrism, a neurological disease resulting in the paralysis of lower limbs. Surveys have shown that there are large scale variations between species of Lathyrus and varieties of L. sativus for the amount of cellular ODAP. In the present investigation, thin-layer chromatography and chemical analysis were used to study developmental variation in the amount of ODAP in tissues and organs of L. sativus. The results confirmed that the rate of synthesis and accumulation of ODAP varied during plant development. Increased rates of synthesis were confirmed in young seedlings and in the developing fruits of L. sativus.Copyright 1994, 1999 Academic Press

Lathyrus sativus, neurotoxin, ODAP, plant development


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