Electrical Changes in the Apical Cell of the Fern Gametophyte during Irradiation with Photomorphogenetically Active Light
Open Access
- 1 August 1982
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 70 (2), 331-334
- https://doi.org/10.1104/pp.70.2.331
Abstract
Electrophysiological procedures were used to evaluate cellular responses of fern (Onoclea sensibilis L.) gametophytes to photomorphogenetically active light. Red, far red, and blue light caused rapid changes in the membrane potential of the apical cell of the gametophyte filament; other cells in the filament were not similarly responsive. Measurements made with one electrode in the apical cell revealed that the membrane potential depolarized in red light and repolarized in far red light. Irradiation with blue light caused a hyperpolarization, the rapidity of which was dependent on a red light pretreatment. More refined measurements with one electrode in the tip of the apical cell and another in the base of the cell showed that both red and blue light treatments cause the apical cell to behave as a dipole. Because of the profound, long-term morphological changes that follow light irradiation in this organism, it was hoped to use it to elucidate the role that electrical parameters play in determining subsequent developmental events.This publication has 12 references indexed in Scilit:
- Phytochrome Modifies Blue-light-induced Electrical Changes in Corn ColeoptilesPlant Physiology, 1980
- Natural H+ Currents Traverse Growing Roots and Root Hairs of Barley (Hordeum vulgare L.)Plant Physiology, 1979
- ELECTRICAL CONTROLS OF DEVELOPMENTAnnual Review of Biophysics and Bioengineering, 1977
- Phytochrome control of electrical potentials and intercellular coupling in oat-coleoptile tissuePlanta, 1976
- Large electrical currents traverse growing pollen tubes.The Journal of cell biology, 1975
- Polarizing Fucoid Eggs Drive a Calcium Current Through ThemselvesScience, 1975
- LOCAL CATION ENTRY AND SELF‐ELECTROPHORESIS AS AN INTRACELLULAR LOCALIZATION MECHANISM*Annals of the New York Academy of Sciences, 1974
- Action Spectra for Light‐induced Elongation in Fern ProtonemataPhysiologia Plantarum, 1967
- A Kinetic Study of Growth Movements and Photomorphogenesis in Etiolated Pea SeedlingsAmerican Journal of Botany, 1964
- ORIENTATION AND LOCUS OF TROPIC PHOTORECEPTOR MOLECULES IN SPORES OF BOTRYTIS AND OSMUNDA The Journal of cell biology, 1962