例如:"lncRNA", "apoptosis", "WRKY"

The Role of Potassium Channels in Arabidopsis thaliana Long Distance Electrical Signalling: AKT2 Modulates Tissue Excitability While GORK Shapes Action Potentials.

Int J Mol Sci. 2018 Mar 21;19(4)
Tracey Ann Cuin 1 , Ingo Dreyer 2 , Erwan Michard 3
Tracey Ann Cuin 1 , Ingo Dreyer 2 , Erwan Michard 3

[No authors listed]

Author information
  • 1 SupAgro Montpellier, 2, Place Viala, 34060 Montpellier, France. tracey.cuin@utas.edu.au.
  • 2 Centro de Bioinformática y Simulación Molecular (CBSM), Universidad de Talca, 2 Norte 685, 3460000 Talca, Chile. idreyer@utalca.cl.
  • 3 Cell Biology and Molecular Genetics, Biosciences Research Building, University of Maryland, College Park, MD 20742, USA. emichard@umd.edu.

摘要


-like transport systems to those of the animal signal. We demonstrate that the outward-rectifying potassium-selective channel GORK limits the AP amplitude and duration, while the weakly-rectifying channel AKT2 affects membrane excitability. By computational modelling of plant APs, we reveal that the GORK activity not only determines the length of an AP but also the steepness of its rise and the maximal amplitude. Thus, outward-rectifying potassium channels contribute to both the repolarisation phase and the initial depolarisation phase of the signal. Additionally, from modelling considerations we provide indications that plant APs might be accompanied by potassium waves, which prime the excitability of the green cable.

KEYWORDS: action potentials, mathematical modelling, membrane transport and excitability, potassium channels