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Nitrogen uptake, assimilation and remobilization in plants: challenges for sustainable and productive agriculture.
This review presents the complexity of NUE and supports the idea that the integration of the numerous data coming from transcriptome studies, functional genomics, quantitative genetics, ecophysiology and soil science into explanatory models of whole-plant behaviour will be promising. Expand
The cytosolic glutamine synthetase GLN1;2 plays a role in the control of plant growth and ammonium homeostasis in Arabidopsis rosettes when nitrate supply is not limiting.
Growing plants in vitro with ammonium or nitrate as the sole nitrogen source allowed us to confirm that GLN1;2 is induced by ammonium in roots and to observe that gln1; 2 mutants displayed, under such conditions, longer root hair and smaller rosette phenotypes in ammonium. Expand
Biological functions of asparagine synthetase in plants
Global analysis of carbon and nitrogen metabolites supports the impact of asn regulation in the synthesis and transport of asparagine in plants. Expand
Assimilation of excess ammonium into amino acids and nitrogen translocation in Arabidopsis thaliana– roles of glutamate synthases and carbamoylphosphate synthetase in leaves
Evidence is provided that ferredoxin‐glutamate synthases, NADH‐glUTamate synthase and carbamoylphosphate synthetase play specific physiological roles in ammonium assimilation in the mesophyll and phloem for the synthesis and transport of glutamine, glutamate, arginine, and derived amino acids. Expand
Enzymatic and metabolic diagnostic of nitrogen deficiency in Arabidopsis thaliana Wassileskija accession.
The major finding of this report was that together with decreasing biomass and yield, nitrogen limitation triggers large modifications in vegetative products and seed quality. Expand
Asparagine Metabolic Pathways in Arabidopsis.
The aim of this study is to highlight the structure of the genes and encoded enzyme proteins involved in asparagine metabolic pathways; the regulation and role of different isogenes; and kinetic and physiological properties of encoded enzymes in different tissues and developmental stages. Expand
Arabidopsis thaliana ASN2 encoding asparagine synthetase is involved in the control of nitrogen assimilation and export during vegetative growth.
It is concluded that ASN2 is essential for nitrogen assimilation, distribution and remobilization (via the phloem) within the plant. Expand
An Arabidopsis mutant disrupted in ASN2 encoding asparagine synthetase 2 exhibits low salt stress tolerance.
Increase in asparagine and proline contents in response to the salt treatment provides evidence for the role of asparagus as a prevailing stress responding amino acid. Expand
ASN1‐encoded asparagine synthetase in floral organs contributes to nitrogen filling in Arabidopsis seeds
Despite a general view that asparagine synthetase generates asparagine as an amino acid for long-distance transport of nitrogen to sink organs, its role in nitrogen metabolic pathways in floralExpand
Impact of the Disruption of ASN3-Encoding Asparagine Synthetase on Arabidopsis Development
The data indicate a fine regulation of asparagine synthesis and hydrolysis in Arabidopsis seeds with wild-type nitrogen status expressed as total nitrogen content. Expand