Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
The K+ battery-regulating Arabidopsis K+ channel AKT2 is under the control of multiple post-translational steps.
Year:2011
Research Areas
  • Plants and animal biology and ecology
Information
Abstract
Potassium (K (+) ) is an important nutrient for plants. It serves as a cofactor of various enzymes and as the major inorganic solute maintaining plant cell turgor. In a recent study, an as yet unknown role of K (+) in plant homeostasis was shown. It was demonstrated that K (+) gradients in vascular tissues can serve as an energy source for phloem (re)loading processes and that the voltage-gated K (+) channels of the AKT2-type play a unique role in this process. The AKT2 channel can be converted by phosphorylation of specific serine residues (S210 and S329) into a non-rectifying channel that allows a rapid efflux of K (+) from the sieve element/companion cells (SE/CC) complex. The energy of this flux is used by other transporters for phloem (re)loading processes. Nonetheless, the results do indicate that post-translational modifications at S210 and S329 alone cannot explain AKT2 regulation. Here, we discuss the existence of multiple post-translational modification steps that work in concert to convert AKT2 from an inward-rectifying into a non-rectifying K (+) channel.
International
Si
JCR
No
Title
Plant Signalling & Behavior
ISBN
1559-2316
Impact factor JCR
Impact info
times cited: 1 (05.12.2012)
Volume
6
Journal number
From page
558
To page
562
Month
ABRIL
Ranking
Participants
  • Autor: Michael Sandmann (Universität Potsdam, Germany)
  • Autor: Kamil Sk¿odowski (Universität Potsdam, Germany)
  • Autor: Pawel Gajdanowicz (Universität Potsdam, Germany)
  • Autor: Erwan Michard (INRA Montpellier, France)
  • Autor: Marcio Rocha (Max-Planck-Institut für Molekulare Pflanzenphysiologie Golm, Germany)
  • Autor: Judith Lucia Gomez Porras (UPM)
  • Autor: Wendy González (Universidad de Talca, Chile)
  • Autor: Luiz Gustavo Guedes Corrêa (Universität Potsdam, Germany)
  • Autor: Santiago J. Ramírez-Aguilar (Max-Planck-Institut für Molekulare Pflanzenphysiologie Golm, Germany)
  • Autor: Tracey Ann Cuin (INRA Montpellier, France)
  • Autor: Joost T. van Dongen (Max-Planck-Institut für Molekulare Pflanzenphysiologie Golm, Germany)
  • Autor: Jean-Baptiste Thibaud (INRA Montpellier, France)
  • Autor: Ingo Dreyer . (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Biotecnología
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)