Nitrate-specific and cytokinin-mediated nitrogen signaling pathways in plants
- 1 June 2003
- journal article
- review article
- Published by Springer Science and Business Media LLC in Journal of Plant Research
- Vol. 116 (3), 253-257
- https://doi.org/10.1007/s10265-003-0097-3
Abstract
Inorganic nitrogen is a limiting factor in plant growth and development. Plants constantly sense changes in nitrogen availability and respond appropriately by modulating gene expression. Plants employ multiple routes for the long-distance signaling and communication of nitrogen status. One of these depends on nitrate itself (nitrate-specific signaling), while another uses cytokinin as a messenger. Recent studies suggest that nitrate-specific signaling functions predominantly in the context of the synthesis of amino acids and nucleic acids. This pathway includes the control of the expression of a wide variety of genes. On the other hand, cytokinin-mediated signaling is related mainly to the control of nitrogen partitioning and development. Nitrogen-dependent cytokinin accumulation and the involvement of His-Asp phosphorelay systems are characteristic of this pathway. The coordination of both regulatory pathways seems to be crucially important for the integration of nitrogen signals at the whole plant level.Keywords
This publication has 38 references indexed in Scilit:
- Molecular Structure of the GARP Family of Plant Myb-Related DNA Binding Motifs of the Arabidopsis Response RegulatorsPlant Cell, 2002
- Identification of Cytokinin Biosynthesis Genes in Arabidopsis: A Breakthrough for Understanding the Metabolic Pathway and the Regulation in Higher Plants.Journal of Plant Growth Regulation, 2002
- Interaction of the Response Regulator ARR4 with Phytochrome B in Modulating Red Light SignalingScience, 2001
- Nitrogen-Dependent Accumulation of Cytokinins in Root and theTranslocation to Leaf: Implication of Cytokinin Species that Induces GeneExpression of Maize ResponseRegulatorPlant and Cell Physiology, 2001
- Characterization of the Response of the Arabidopsis Response Regulator Gene Family to CytokininPlant Physiology, 2000
- Differential Expression of Genes for Response Regulators in Response to Cytokinins and Nitrate in Arabidopsis thalianaPlant and Cell Physiology, 1999
- Expression of Arabidopsis response regulator homologs is induced by cytokinins and nitrateFEBS Letters, 1998
- Nitrate Acts as a Signal to Induce Organic Acid Metabolism and Repress Starch Metabolism in Tobacco.Plant Cell, 1997
- Glutamine Synthetase and Ferredoxin-Dependent Glutamate Synthase Expression in the Maize (Zea mays) Root Primary Response to Nitrate (Evidence for an Organ-Specific Response)Plant Physiology, 1993
- Effects of Nitrate and Ammonium on Gene Expression of Phosphoenolpyruvate Carboxylase and Nitrogen Metabolism in Maize Leaf Tissue during Recovery from Nitrogen StressPlant Physiology, 1992