期刊
ANALYTICAL BIOCHEMISTRY
卷 397, 期 2, 页码 208-211出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ab.2009.10.013
关键词
Arabidopsis; Polyamines; Spermine; Thermospermine; Indole acetic acid; Abscisic acid
资金
- Spanish Ministry of Science [BIO2005-07156-C02-01, BIO2007-60923]
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. (C) 2009 Elsevier Inc. All rights reserved.
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