UNIGE document Scientific Article
previous document  unige:10813  next document
add to browser collection
Title

High-resolution profiling of oxylipin-containing galactolipids in Arabidopsis extracts by ultra-performance liquid chromatography/time-of-flight mass spectrometry

Authors
Published in Rapid Communications in Mass Spectrometry. 2008, vol. 22, no. 20, p. 3154 - 3160
Abstract A high-ltra-performance liquid chromatography/time-of-flight mass spectrometry (UPLC/TOFMS) method using in-source collision-induced dissociation (CID) was developed for globally profiling oxylipin-containing galactolipids in Arabidopsis wounded leaves. MS and pseudo-MS/MS spectra were obtained during a single analytical run by switching a lens of the TOFMS transfer optics from low to high voltage. Numerous known galactolipids were observed, and four novel mono- or di-galactosyl monoacylglycerides (MGMGs or DGMGs) containing oxophytodienoic acid (OPDA) or dinor-oxophytodienoic acid (dn-OPDA), esterified respectively at the sn1 and the sn2 positions, were identified. Rapid microisolation of the galactolipids followed by alkaline and enzymatic hydrolyses enabled the release of the esterified oxylipins, which allowed for the unambiguous characterization of the oxylipin-containing monoacylglycerides. Their strong induction in response to wounding indicates that these compounds are probably lysogalactolipids formed from galactosyldiglycerides in the injured tissues.resolution u
Keywords UHPLCUHPLC-TOFMSGalactolipidsArabidopsisArbidopsidesMonoacylglyceridesWounding
Stable URL http://archive-ouverte.unige.ch/unige:10813
Full text
Article (Published version) (136 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://doi.wiley.com/10.1002/rcm.3716
Identifiers
Structures
125 hits and 0 download since 2010-08-23
Update
Export document
Format :
Citation style :