Article (Scientific journals)
Sensitive and high throughput metabolite assays for inorganic pyrophosphate, ADPGlc, nucleotide phosphates, and glycolytic intermediates based on a novel enzymic cycling system.
Gibon, Yves; Vigeolas, Hélène; Tiessen, Axel et al.
2002In Plant Journal, 30 (2), p. 221-35
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Keywords :
Adenine Nucleotides/metabolism; Adenosine Diphosphate/metabolism; Adenosine Diphosphate Glucose/metabolism; Adenosine Triphosphate/metabolism; Aging; Arabidopsis/enzymology/genetics/growth & development/metabolism; Biological Assay/methods; Carbon/metabolism; Diphosphates/metabolism; Freezing; Glucose/metabolism; Glycerol; Glycerolphosphate Dehydrogenase/metabolism; Glycolysis; Lipid Metabolism; Oxygen/metabolism; Pyruvates/metabolism; Reproducibility of Results; Seeds/enzymology/genetics/growth & development/metabolism; Sensitivity and Specificity; Starch/metabolism
Abstract :
[en] Metabolite assays are required to characterise how metabolism changes between genotypes during development and in response to environmental perturbations. They provide a springboard to identify important regulatory sites and investigate the underlying mechanisms. Due to their small size, Arabidopsis seeds pose a technical challenge for such measurements. A set of assays based on a novel enzymic cycling system between glycerol-3-phosphate dehydrogenase and glycerol-3-phosphate oxidase have been developed and optimised for use with growing Arabidopsis seeds. In combination with existing assays they provide a suite of high throughput, sensitive assays for the immediate precursors for starch (adenine diphosphate glucose) and lipid (acetyl coenzyme A, glycerol-3-phosphate) synthesis, as well as pyrophosphate, ATP, ADP and most of the glycolytic intermediates. A method is also presented to rapidly quench intact siliques, lyophilise them and then manually separate seeds for metabolite analysis. These techniques are used to investigate changes in overall seed metabolite levels during development and maturation, and in response to a stepwise decrease of the external oxygen concentration.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Gibon, Yves
Vigeolas, Hélène ;  Université de Liège - ULiège > Département des sciences de la vie > Génétique
Tiessen, Axel
Geigenberger, Peter
Stitt, Mark
Language :
English
Title :
Sensitive and high throughput metabolite assays for inorganic pyrophosphate, ADPGlc, nucleotide phosphates, and glycolytic intermediates based on a novel enzymic cycling system.
Publication date :
2002
Journal title :
Plant Journal
ISSN :
0960-7412
eISSN :
1365-313X
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
30
Issue :
2
Pages :
221-35
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 November 2010

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