The arogenate dehydratase gene family: towards understanding differential regulation of carbon flux through phenylalanine into primary versus secondary metabolic pathways.
Phytochemistry(2012)
Abstract
Phe is formed from arogenate in planta through the action of arogenate dehydratase (ADT), and there are six ADT isoenzymes in the “model” vascular plant species Arabidopsis thaliana. This raised the possibility that specific ADTs may be differentially regulated so as to control Phe biosynthesis for protein synthesis vs its much more massive deployment for phenylpropanoid metabolism. In our previous reverse genetics study using 25 single/multiple ADT knockout (KO) lines, a subset of these knockouts was differentially reduced in their lignin contents.
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Key words
Arabidopsis thaliana,Brassicaceae,Arogenate dehydratase,Knockout mutants,Phenylalanine,Tyrosine,Tryptophan,Amino acids,Lignins,Phenylpropanoids
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