Signal transduction in Mimosa pudica: Biologically closed electrical circuits

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

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Biologically closed electrical circuits operate over large distances in biological tissues. The activation of such circuits can lead to various physiological and biophysical responses. Here, we analyse the biologically closed electrical circuits of the sensitive plant Mimosa pudica Linn. using electrostimulation of a petiole or pulvinus by the charged capacitor method, and evaluate the equivalent electrical scheme of electrical signal transduction inside the plant. The discharge of a 100 μF capacitor in the pulvinus resulted in the downward fall of the petiole in a few seconds, if the capacitor was charged beforehand by a 1.5 V power supply. Upon disconnection of the capacitor from Ag/AgCl electrodes, the petiole slowly relaxed to the initial position. The electrical properties of the M. pudica were investigated, and an equivalent electrical circuit was proposed that explains the experimental data.

Original languageEnglish (US)
Pages (from-to)816-827
Number of pages12
JournalPlant, Cell and Environment
Volume33
Issue number5
DOIs
StatePublished - May 2010

Keywords

  • Charged capacitor method
  • Electrical signalling
  • Motor cells
  • Plant electrophysiology

ASJC Scopus subject areas

  • Physiology
  • Plant Science

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