Effects of Tannin and Phenolics on the H+-ATPase Activity in Plant Plasma Membrane

László Erdei, Andrea Szabó-Nagy, Márta Laszlavik

Research output: Contribution to journalArticle

12 Citations (Scopus)


The effects of the common plant antioxidants, tannin, ellagic acid and other phenolics of the cell wall metabolism on the activities of plasmalemma H+-ATPase were studied. Plasmalemma from the roots of winter wheat (Triticum aestivum L. cv. MV-8) was purified by aqueous two-phase partitioning. Tannin and ellagic acid inhibited the H+-ATPase activity with a characteristic IC50 value of 0.3 and 30 μM, respectively. At 100 μM concentration, (+)catechin brought about 50% inhibition while gallic, protocatechuic, vanillic, coumaric, caffeic and ferulic acid had only slight inhibitory effects. It is concluded that the mechanism of the interaction between plant phenolic antioxidants and cell constitutents may be more composed than the formation of simple H-bonds between phenolic -OH groups and cellular macromolecules. It is also suggested that phenolics may modify membrane transport processes in plant cells.

Original languageEnglish
Pages (from-to)49-52
Number of pages4
JournalJournal of Plant Physiology
Issue number1
Publication statusPublished - Jan 1 1994



  • Ellagic acid
  • H-ATPase
  • LPC
  • Triticum aestivum L.
  • lysophosphatidylcholine
  • phenolics
  • plasmalemma
  • tannin
  • wheat root

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

Cite this