Growth rate and mitotic index analysis of Vicia faba L. Roots exposed to 60‐Hz electric fields

M. Inoue, Morton W. Miller, Christopher Cox, E. L. Carstesen

Research output: Contribution to journalArticle

Abstract

Growth, mitotic index, and growth rate recovery were determined for Vicia faba L. roots exposed to 60‐Hz electric fields of 200, 290, and 360 V/m in an aqueous inorganic nutrient medium (conductivity 0.07–0.09 S/m). Root growth rate decreased in proportion to the increasing strength; the electric field threshold for a growth rate effect was about 230 V/m. The induced transmembrane potential at the threshold exposure was about 4–7 mV. The mitotic index was not affected by an electric field exposure sufficient to reduce root growth rate to about 35% of control. Root growth rate recovery from 31–96% of control occurred in 4 days after cessation of the 360 V/m exposure. The results support the postulate that the site of action of the applied electric fields is the cell membrane.

Original languageEnglish (US)
Pages (from-to)293-303
Number of pages11
JournalBioelectromagnetics
Volume6
Issue number3
DOIs
StatePublished - 1985
Externally publishedYes

Keywords

  • 60‐Hz electric fields
  • Vicia faba L
  • growth rate
  • mitotic index
  • plant roots

ASJC Scopus subject areas

  • Biophysics
  • Physiology
  • Radiology Nuclear Medicine and imaging

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