Inhibition and recovery of growth processes in roots of pisum sativum L. Exposed to 60‐Hz electric fields

Dominique Robertson, Morton W. Miller, Christopher Cox, Henry T. Davis

Research output: Contribution to journalArticlepeer-review

Abstract

Roots of Pisum sativum L. were chronically exposed in aqueous inorganic nutrient medium to 60‐Hz electric fields between 140 and 490 V/m (growth medium conductivity ∼ 0.08 S/m). The growth rate, meristematic mitotic index, and growth rate recovery of the roots were determined. At 140 V/m there was no perturbation in growth rate or mitotic index. At 430 V/m the growth rate and the mitotic index were reduced. The mitotic index had a maximum depression (∼ 55% of control), which occurred at 4 h. The depression in growth rate was immediate and constant over time. When roots were exposed to an electric field at 430 V/m for 2 days, the growth rate was depressed by about 40%. When the field was terminated, the growth rate steadily increased and was almost normal after 5 days. At 490 V/m root growth rate was almost completely arrested. According to these results, there is a narrow range of induced membrane potentials that span the range from slightly altered to almost completely arrested growth rates.

Original languageEnglish (US)
Pages (from-to)329-340
Number of pages12
JournalBioelectromagnetics
Volume2
Issue number4
DOIs
StatePublished - 1981
Externally publishedYes

Keywords

  • 60 Hz
  • Pisum sativum
  • biologic effects
  • electric fields
  • membrane potentials
  • recovery

ASJC Scopus subject areas

  • Biophysics
  • Physiology
  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Inhibition and recovery of growth processes in roots of pisum sativum L. Exposed to 60‐Hz electric fields'. Together they form a unique fingerprint.

Cite this