Calcium Uptake by Plant Cells--Channels and Pumps Acting in Concert

Trends Plant Sci. 2001 Nov;6(11):514-9. doi: 10.1016/s1360-1385(01)02124-0.

Abstract

How do plant cells accomplish a net uptake of Ca(2+) but keep the membrane potential under control? Consideration of the voltage dependence of the depolarization-activated calcium channel and hyperpolarization-activated calcium channel types, and two other major transporters in the plasma membrane, the H(+)-ATPase and I(K,out), suggests that one channel is well suited for both nutritive and signalling Ca(2+) uptake whereas the other could be limited to a signalling function.

MeSH terms

  • Arabidopsis / metabolism
  • Arabidopsis Proteins
  • Calcium / metabolism*
  • Calcium Channels / metabolism*
  • Ion Pumps / physiology*
  • Patch-Clamp Techniques
  • Plant Proteins / metabolism
  • Potassium Channels / metabolism
  • Potassium Channels, Tandem Pore Domain*
  • Proton-Translocating ATPases / genetics
  • Proton-Translocating ATPases / metabolism

Substances

  • Arabidopsis Proteins
  • Calcium Channels
  • Ion Pumps
  • KCO1 protein, Arabidopsis
  • Plant Proteins
  • Potassium Channels
  • Potassium Channels, Tandem Pore Domain
  • Proton-Translocating ATPases
  • Calcium