K, Mg‐ATPase activity in guard cells of Commelina communis

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12 Scopus citations


A Mg2+‐dependent, K+‐stimulated ATPase activity was detected in microsomal preparations from guard cell protoplasts of Commelina communis L. The ATPase activity was oligomycin‐insensitive, highly specific for ATP and strongly inhibited by pentavanadate and CaSO4. It is possible that this ATPase is associated with the plasmalemma and its activity linked with K+ uptake by guard cells.

Original languageEnglish
Pages (from-to)315-319
Number of pages5
JournalPhysiologia Plantarum
Issue number2
StatePublished - 1 Jan 1986


  • Plasma membrane
  • stomatal movement
  • tonoplast

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science
  • Cell Biology


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