Linking a rapid throughput plate-assay with high-sensitivity stable-isotope label LCMS quantification permits the identification and characterisation of low β-L-ODAP grass pea lines

Grass pea ( Lathyrus sativus ) is an underutilised crop with high tolerance to drought and flooding stress and potential for maintaining food and nutritional security in the face of climate change. The presence of the neurotoxin β-L-oxalyl-2,3-diaminopropionic acid (β-L-ODAP) in tissues of the plant...

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Bibliographic Details
Main Authors: Emmrich, Peter M.F., Rejzek, Martin, Hill, Lionel, Brett, Paul, Edwards, Anne, Sarkar, Abhimanyu, Field, Rob A., Martin, Cathie, Wang, Trevor L.
Format: Journal Article
Language:Inglés
Published: Springer 2019
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Online Access:https://hdl.handle.net/10568/129608
Description
Summary:Grass pea ( Lathyrus sativus ) is an underutilised crop with high tolerance to drought and flooding stress and potential for maintaining food and nutritional security in the face of climate change. The presence of the neurotoxin β-L-oxalyl-2,3-diaminopropionic acid (β-L-ODAP) in tissues of the plant has limited its adoption as a staple crop. To assist in the detection of material with very low neurotoxin toxin levels, we have developed two novel methods to assay ODAP. The first, a version of a widely used spectrophotometric assay, modified for increased throughput, permits rapid screening of large populations of germplasm for low toxin lines and the second is a novel, mass spectrometric procedure to detect very small quantities of ODAP for research purposes and characterisation of new varieties.