title: 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.
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.
authors.affiliation: †State Key Laboratory of Grassland Agroecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.|‡The UWA Institute of Agriculture, The University of Western Australia, M082, Perth, Western Australia 6009, Australia.
authors.forename: Jun-Lan
authors.initials: JL
authors.lastname: Xiong
authors.affiliation: †State Key Laboratory of Grassland Agroecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: You-Cai
authors.initials: YC
authors.lastname: Xiong
authors.affiliation: †State Key Laboratory of Grassland Agroecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Bai
authors.affiliation: †State Key Laboratory of Grassland Agroecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Kong
authors.affiliation: †State Key Laboratory of Grassland Agroecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Rui-Yue
authors.initials: RY
authors.lastname: Tan
authors.affiliation: †State Key Laboratory of Grassland Agroecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Zhu
authors.affiliation: ‡The UWA Institute of Agriculture, The University of Western Australia, M082, Perth, Western Australia 6009, Australia.
authors.forename: Kadambot H M
authors.initials: KH
authors.lastname: Siddique
authors.affiliation: †State Key Laboratory of Grassland Agroecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Jian-Yong
authors.initials: JY
authors.lastname: Wang
authors.affiliation: ‡The UWA Institute of Agriculture, The University of Western Australia, M082, Perth, Western Australia 6009, Australia.|§Centre for Plant Genetics and Breeding, The University of Western Australia, M080, Perth, Western Australia 6009, Australia.
authors.forename: Neil C
authors.initials: NC
authors.lastname: Turner
mesh_terms: D000599:Amino Acids, Diamino / Q000032:analysis / Q000378:metabolism*; D005638:Fruit / Q000737:chemistry / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D005838:Genotype; D027807:Lathyrus / Q000737:chemistry / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D009498:Neurotoxins / Q000032:analysis / Q000378:metabolism*; D018515:Plant Leaves / Q000737:chemistry / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D012639:Seeds / Q000737:chemistry / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D014867:Water / Q000032:analysis / Q000378:metabolism*
chemical_list: D000599:Amino Acids, Diamino; D009498:Neurotoxins; D014867:Water; C100126:oxalyldiaminopropionic acid
keywords: reproductive phase; seed yield; vegetative phase; water stress; β-ODAP amount