Genotypic Variation in the Concentration of β- N -Oxalyl- l -α,β-diaminopropionic Acid (β-ODAP) in Grass Pea (Lathyrus sativus L.) Seeds Is Associated with an Accumulation of Leaf and Pod β-ODAP during Vegetative and Reproductive Stages at Three Levels of Water Stress

J.L. Xiong, Y.C. Xiong, X. Bai, H.Y. Kong, R.Y. Tan, H. Zhu, Kadambot Siddique, J.Y. Wang, Neil Turner

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8 Citations (Scopus)

Abstract

© 2015 American Chemical Society. Grass pea (Lathyrus sativus L.) cultivation is limited because of the presence in seeds and tissues of the nonprotein amino acid β-N-oxalyl-l-α,β-diaminopropionic acid (β-ODAP), a neurotoxin that can cause lathyrism in humans. Seven grass pea genotypes differing in seed β-ODAP concentration were grown in pots at three levels of water availability to follow changes in the concentration and amount of β-ODAP in leaves and pods and seeds. The concentration and amount of β-ODAP decreased in leaves in early reproductive development and in pods as they matured, while water stress increased β-ODAP concentration in leaves and pods at these stages. The net amount of β-ODAP in leaves and pods at early podding was positively associated with seed β-ODAP concentration at maturity. We conclude that variation among genotypes in seed β-ODAP concentration results from variation in net accumulation of β-ODAP in leaves and pods during vegetative and early reproductive development.
Original languageEnglish
Pages (from-to)6133-6141
JournalJournal of Agricultural and Food Chemistry
Volume63
Issue number27
DOIs
Publication statusPublished - 2015

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