title: Quantitation of biogenic tetraamines in Arabidopsis thaliana.
abstract: Classical methods for the determination of polyamines in Arabidopsis, based on high-performance liquid chromatography or thin-layer chromatography, do not distinguish between aliphatic tetraamines or do not allow accurate quantitation, respectively. Here we describe a gas chromatography-mass spectrometry method that allows separation and simple quantitation of spermine and thermospermine. The reliability of the protocol has been confirmed using extracts of Arabidopsis mutants impaired in tetraamine biosynthesis. The levels of thermospermine are around 6-fold lower than those of spermine in Arabidopsis seedlings. Interestingly, hormonal effects on polyamine levels are not always correlated with those of transcripts of their biosynthetic enzymes.
authors.affiliation: Instituto de Biología Molecular y Celular de Plantas, Universidad Politécnica de Valencia-CSIC, 46022 Valencia, Spain.
authors.forename: José L
authors.initials: JL
authors.lastname: Rambla
authors.forename: Francisco
authors.initials: F
authors.lastname: Vera-Sirera
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Blázquez
authors.forename: Juan
authors.initials: J
authors.lastname: Carbonell
authors.forename: Antonio
authors.initials: A
authors.lastname: Granell
mesh_terms: D017360:Arabidopsis / Q000737:chemistry* / Q000235:genetics; D008401:Gas Chromatography-Mass Spectrometry; D011073:Polyamines / Q000032:analysis*; D013096:Spermine / Q000031:analogs & derivatives / Q000302:isolation & purification
chemical_list: D011073:Polyamines; D013096:Spermine; C021097:thermospermine