Anisotropy and nonlinear properties of electrochemical circuits in leaves of Aloe vera L

Alexander G. Volkov, Justin C. Foster, Emil Jovanov, Vladislav S. Markin

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Plant tissue has biologically closed electrical circuits and electric fields that regulate its physiology. The biologically closed electrochemical circuits in the leaves of Aloe vera were analyzed using the charge stimulation method with Ag/AgCl electrodes inserted along a leaf at 1-2. cm distance. The electrostimulation was provided with different timing and different voltages. Strong electrical anisotropy of the leaves was found. In the direction across the leaf the electrical circuits remained passive and linear, while along the leaf the response remained linear only at small voltages not exceeding 1. V. At higher potentials the circuits became strongly non-linear pointing to the opening of voltage gated ion channels in the plant tissues. Changing the polarity of electrodes located along conductive bundles led to a strong rectification effect and to different kinetics of capacitor discharge. Equivalent electrical circuit models of the leaf were proposed to explain the experimental data.

Original languageEnglish (US)
Pages (from-to)4-9
Number of pages6
Issue number1
StatePublished - Apr 2011


  • Aloe vera
  • Charge stimulation method
  • Electrical signaling
  • Electrostimulation
  • Plant electrophysiology

ASJC Scopus subject areas

  • Biophysics
  • Physical and Theoretical Chemistry
  • Electrochemistry


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