RT info:eu-repo/semantics/article T1 Isolation and Quantification of Mandelonitrile from Arabidopsis thaliana Using Gas Chromatography/Mass Spectrometry A1 Arnáiz Alonso, Ana A1 Vallejo García, Jorge Lucas A1 Vallejos Calzada, Saúl A1 Diaz, Isabel K1 Benzaldehyde cyanohydrin K1 Mandelonitrile K1 Hydroxynitrile lyase K1 Arabidopsis thaliana K1 Spider mite K1 Cyanogenic glycosides K1 Cyanohydrin K1 Química orgánica K1 Chemistry, Organic AB Mandelonitrile is a nitrogen-containing compound, considered an essential secondary metabolite. Chemically, it isa cyanohydrin derivative of benzaldehyde, with relevant functions in different physiological processes includingdefense against phytophagous arthropods. So far, procedures for detecting mandelonitrile have been effectivelyapplied in cyanogenic plant species such as Prunus spp. Nevertheless, its presence in Arabidopsis thaliana,considered a non-cyanogenic species, has never been determined. Here, we report the development of an accurateprotocol for mandelonitrile quantification in A. thaliana within the context of A. thaliana–spider mite interaction.First, mandelonitrile was isolated from Arabidopsis rosettes using methanol; then, it was derivatized by silylationto enhance detection and, finally, it was quantified using gas chromatography–mass spectrometry. The selectivityand sensitivity of this method make it possible to detect low levels of mandelonitrile (LOD 3 ppm) in a plant speciesconsidered non-cyanogenic that, therefore, will have little to no cyanogenic compounds, using a small quantity ofstarting material (≥ 100 mg). PB Bio-protocol LLC SN 2331-8325 YR 2023 FD 2023-06 LK http://hdl.handle.net/10259/7714 UL http://hdl.handle.net/10259/7714 LA eng NO Protocolo NO This work was supported by funds of “La Caixa” Foundation (LCF/PR18/51130007) and Ministerio de Universidades-European Union in the frame of NextGenerationEU RD 289/2021 (Universidad Politécnica de Madrid). DS Repositorio Institucional de la Universidad de Burgos RD 11-may-2024