Growth rate and mitotic index analysis of Vicia faba L. roots exposed to 60-Hz electric fields
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. 10 references, 4 figures, 4 tables.
- Research Organization:
- Univ. of Rochester, NY
- DOE Contract Number:
- AC02-76EV03490
- OSTI ID:
- 5875958
- Journal Information:
- Bioelectromagnetics (N.Y.); (United States), Vol. 6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRIC FIELDS
BIOLOGICAL EFFECTS
ROOTS
PLANT GROWTH
CELL MEMBRANES
DOSE-RESPONSE RELATIONSHIPS
EXPERIMENTAL DATA
MITOSIS
VICIA
BACTERIA
CELL CONSTITUENTS
CELL DIVISION
DATA
GROWTH
INFORMATION
LEGUMINOSAE
MEMBRANES
MICROORGANISMS
NUMERICAL DATA
PLANTS
RHIZOBIUM
560400* - Other Environmental Pollutant Effects