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 journalArticle

21 Citations (Scopus)

Abstract

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
JournalBioelectrochemistry
Volume81
Issue number1
DOIs
StatePublished - Apr 2011

Fingerprint

Aloe
Anisotropy
leaves
Electrodes
anisotropy
Networks (circuits)
Ion Channels
Electric potential
Tissue
Passive networks
Physiology
electric potential
physiology
Capacitors
electrodes
Electric fields
rectification
stimulation
Kinetics
bundles

Keywords

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

ASJC Scopus subject areas

  • Biophysics
  • Electrochemistry
  • Physical and Theoretical Chemistry

Cite this

Anisotropy and nonlinear properties of electrochemical circuits in leaves of Aloe vera L. / Volkov, Alexander G.; Foster, Justin C.; Jovanov, Emil; Markin, Vladislav S.

In: Bioelectrochemistry, Vol. 81, No. 1, 04.2011, p. 4-9.

Research output: Contribution to journalArticle

Volkov, Alexander G. ; Foster, Justin C. ; Jovanov, Emil ; Markin, Vladislav S. / Anisotropy and nonlinear properties of electrochemical circuits in leaves of Aloe vera L. In: Bioelectrochemistry. 2011 ; Vol. 81, No. 1. pp. 4-9.
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