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Regulatory network
- After uptake, N assimilation comprises the reduction of nitrate to ammonium and its subsequent incorporation into amino acids. Amino acids, but also nitrate, are transported from root to shoot and vice versa. Most steps of N transport and assimilation are tightly controlled by a regulatory network acting both cell-autonomously and systemically.
www.sciencedirect.com/science/article/pii/S1369526615000618Plant nitrogen assimilation and its regulation: a complex ...
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Mar 18, 2010 · Rapid post-translational regulation such as protein modification is the second mechanism that controls nitrogen uptake and assimilation. Post-transcriptional regulation of nitrate transporters by phosphorylation has recently been described for the nitrate transporter NRT1·1.
- Céline Masclaux-Daubresse, Françoise Daniel-Vedele, Julie Dechorgnat, Fabien Chardon, Laure Gauficho...
- 2010
May 1, 2022 · Therefore, comprehensively understanding the molecular mechanisms of N use efficiency (NUE) and breeding crops with higher NUE is essential to tackle these problems. NUE of crops is determined by N uptake, transport, assimilation, and remobilization.
Sep 25, 2023 · Plants uptake and assimilate nitrogen from the soil in the form of nitrate, ammonium ions, and available amino acids from organic sources. Plant nitrate and ammonium transporters are responsible for nitrate and ammonium translocation from the soil into the roots.
- 10.3390/biom13101443
- 2023/10
- Biomolecules. 2023 Oct; 13(10): 1443.
Jul 7, 2020 · In plants, the nitrogen (N) source for uptake and assimilation, mainly in the forms of nitrate (NO 3–) and ammonium (NH 4+) quantitatively dominates the anion and cation equilibrium and the pH balance in cells.
- Huimin Feng, Xiaorong Fan, Anthony J Miller, Guohua Xu
- 10.1093/jxb/eraa150
- 2020
- J Exp Bot. 2020 Jul 25; 71(15): 4380-4392.
Nov 9, 2017 · This review examines mechanisms of N uptake and assimilation processes, as well as source-to-sink partitioning of N in plants. Transporters involved in soil-to-root-to-leaf-to-seed allocation of inorganic N (i.e. nitrate and ammonium) and organic N (i.e. amino acids and ureides), their role in source and sink physiology, and their importance ...
- Mechthild Tegeder, Céline Masclaux-Daubresse
- 469
- 2018
- 09 November 2017
Jul 25, 2020 · In plants, the nitrogen (N) source for uptake and assimilation, mainly in the forms of nitrate (NO3-) and ammonium (NH4+) quantitatively dominates the anion and cation equilibrium and the pH balance in cells.
Jun 1, 2015 · Nitrate and ammonium are taken up by the root via specific transporters. Nitrate is reduced in the cytosol to nitrite by nitrate reductase (NR). A side reaction of NR produces nitrogen oxide (NO). Nitrite is then transported into the chloroplast by HPP transporters and reduced to ammonium by nitrite reductase (NiR).
