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.
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| Abstract |
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.
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| Authors | Jun-Lan Xiong, You-Cai Xiong, Xue Bai, Hai-Yan Kong, Rui-Yue Tan, Hao Zhu, Kadambot H M Siddique, Jian-Yong Wang, Neil C Turner |
| Journal | Journal of agricultural and food chemistry (J Agric Food Chem) Vol. 63 Issue 27 Pg. 6133-41 (Jul 15 2015) ISSN: 1520-5118 [Electronic] United States |
| PMID | 26027639 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
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