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Identification of an Arabidopsis thaliana mutant accumulating threonine resulting from mutation in a new dihydrodipicolinate synthase gene

Identification of an Arabidopsis thaliana mutant accumulating threonine resulting from mutation... A novel Arabidopsis DHDPS gene named DHDPS2 was found through identification of a mutant by promoter trapping. The mutation promotes a reduction of growth resulting from combination of a defect in lysine biosynthesis and accumulation of a toxic level of threonine or derived products. The mutant also modifies the amino acid composition issuing from the pyruvate and aspartate pathways, affecting mainly the root compartment. These data are in accordance with the expression of DHDPS2 in the root apex as visualized by expression of the GUS reporter gene. This suggests that a large proportion of the amino acids derived from pyruvate and aspartate are synthesized in this organ. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Plant Journal Wiley

Identification of an Arabidopsis thaliana mutant accumulating threonine resulting from mutation in a new dihydrodipicolinate synthase gene

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References (29)

Publisher
Wiley
Copyright
Copyright © 2000 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0960-7412
eISSN
1365-313X
DOI
10.1046/j.1365-313x.2000.00884.x
Publisher site
See Article on Publisher Site

Abstract

A novel Arabidopsis DHDPS gene named DHDPS2 was found through identification of a mutant by promoter trapping. The mutation promotes a reduction of growth resulting from combination of a defect in lysine biosynthesis and accumulation of a toxic level of threonine or derived products. The mutant also modifies the amino acid composition issuing from the pyruvate and aspartate pathways, affecting mainly the root compartment. These data are in accordance with the expression of DHDPS2 in the root apex as visualized by expression of the GUS reporter gene. This suggests that a large proportion of the amino acids derived from pyruvate and aspartate are synthesized in this organ.

Journal

The Plant JournalWiley

Published: Nov 1, 2000

Keywords: ; ; ; ; ;

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