Genotypic Variation in the Concentration of 尾-N-Oxalyl-l-伪,尾-diaminopropionic Acid (尾-ODAP) in Grass Pea (Lathyrus sativus L.) Seeds Is Associated with an

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• 作者：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
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2015
• 出版时间：July 15, 2015
• 年：2015
• 卷：63
• 期：27
• 页码：6133-6141
• 全文大小：317K
• ISSN：1520-5118

文摘

Grass pea (Lathyrus sativus L.) cultivation is limited because of the presence in seeds and tissues of the nonprotein amino acid 尾-N-oxalyl-class="smallcaps">l-伪,尾-diaminopropionic acid (尾-ODAP), a neurotoxin that can cause lathyrism in humans. Seven grass pea genotypes differing in seed 尾-ODAP concentration were grown in pots at three levels of water availability to follow changes in the concentration and amount of 尾-ODAP in leaves and pods and seeds. The concentration and amount of 尾-ODAP decreased in leaves in early reproductive development and in pods as they matured, while water stress increased 尾-ODAP concentration in leaves and pods at these stages. The net amount of 尾-ODAP in leaves and pods at early podding was positively associated with seed 尾-ODAP concentration at maturity. We conclude that variation among genotypes in seed 尾-ODAP concentration results from variation in net accumulation of 尾-ODAP in leaves and pods during vegetative and early reproductive development.