Proportionality of ELF electric field-induced growth inhibition to induced membrane potential inZea mays andVicia faba roots |
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Authors: | A A Brayman T Megumi M W Miller |
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Institution: | (1) Department of Biophysics ,School of Medicine and Dentistry, The University of Rochester, 14642 Rochester, NY, USA;(2) Radiation Center of Osaka Prefecture Shinke-cho, 593 Sakai Osaka, Japan |
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Abstract: | Summary The postulate that 60-Hz electric field-induced bioeffect severity is proportional to induced transmembrane potential
] magnitude was tested and supported using a plant root model cell system. Statistically significant correlations were obtained upon regression of the relative rates of exposedVicia faba andZea mays root segment growth on the average
(calculated) arising in those segments under specified 60 Hz field exposure conditions. The
associated with the apparent threshold for growth inhibition was similar inZea andVicia roots (2.5 vs 2.4 mV, respectively). At
greater than this threshold,Zea root growth declined by about 9% per mV, andVicia root growth by about 19% per mV induced potential.Abbreviations EF
electric field
- RGR
relative growth rate
- RSGR
relative segmental growth rate
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induced membrane potential
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segmental-average induced membrane potential
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VC
d
region of root tip in which a complete, nascent vascular cylinder is first distinguishable in histological sections |
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Keywords: | |
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