Reciprocal regulation between AtNRT2.1 and AtAMT1.1 expression and the kinetics of NH(4)(+) and NO(3)(-) influxes
Copyright © 2011 Elsevier GmbH. All rights reserved.
| Veröffentlicht in: | Journal of plant physiology. - 1979. - 169(2012), 3 vom: 15. Feb., Seite 268-74 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2012
|
| Zugriff auf das übergeordnete Werk: | Journal of plant physiology |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Anion Transport Proteins Arabidopsis Proteins AtNRT2.1 protein, Arabidopsis Cation Transport Proteins Nitrates Plant Proteins Quaternary Ammonium Compounds ammonium transporters, plant mehr... |
| Zusammenfassung: | Copyright © 2011 Elsevier GmbH. All rights reserved. Our results show that AtNRT2.1 expression has a positive effect on the NH(4)(+) ion influx, mediated by the HATS, as also occurs with AtAMT1.1 expression on the NO(3)(-) ion influx. AtNRT2.1 expression plays a key role in the regulation of AtAMT1.1 expression and in the NH(4)(+) ion influx, differentiating the nitrogen source, and particularly, the lack of it. Nitrogen starvation produces a compensatory effect by AtAMT1.1 when there is an absence of the AtNRT2.1 gene. Our results also show that, in the atnrt2 mutant lacking both AtNRT2.1 and AtNRT2.2, gene functions present different kinetic parameters on the NH(4)(+) ion influx mediated by the HATS, according to the source and availability of nitrogen. Finally, the absence of AMT1.1 also produces changes in the kinetic parameters of the NO(3)(-) influx, showing different V(max) values depending on the source of nitrogen available |
|---|---|
| Beschreibung: | Date Completed 16.07.2012 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1618-1328 |
| DOI: | 10.1016/j.jplph.2011.10.011 |