Ilík, P. and Hlaváčková, V. and Krchňák,, P. and Nauš, J. (2010) A low-noise multi-channel device for the monitoring of systemic electrical signal propagation in plants. Biologia Plantarum, 54 (1). pp. 185-190.
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Abstract
Long-distance electrical signals generated in locally stimulated plants are linked with systemic physiological responses. The propagation of electrical signal through a plant can be measured by multiple electrodes attached to different sites of a plant body. As this signal has to be measured with the sensitivity of tens of microvolts, it can be easily disturbed by power-line hums or external electromagnetic fields. These disturbances can mimic the action potentials generated by a plant. In this work, we present a brief summary of various experimental approaches to the measurement of surface electrical potential (SEP) on a plant and a description of our multi-channel device for the SEP measurement. The main advantages of our measuring system are galvanic separation of the measuring unit, resulting in the elimination of power-line disturbances, and simple and stable contact of Ag/AgCl-peletted electrodes with the plant surface, facilitated by an ordinary gel used in human electrocardiography. These improvements enabled us to detect unperturbed variation (slow) and action (fast) potentials on a plant, as demonstrated by the four-electrode measurement of the electrical signal propagation in a locally wounded tomato plant.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | action potential, local wounding, systemic response, variation potential. |
| Author Affiliation: | Laboratory of Biophysics, Department of Experimental Physics, Faculty of Science, Palacký University, Tř. Svobody 26, Olomouc, CZ-77146, Czech Republic |
| Subjects: | Crop Improvement > Biotechnology Plant Physiology and Biochemistry > Plant Physiology |
| Divisions: | General |
| Depositing User: | Mr Balakrishna Garadasu |
| Date Deposited: | 26 Apr 2013 05:12 |
| Last Modified: | 26 Apr 2013 05:12 |
| Official URL: | http://dx.doi.org/10.1007/s10535-010-0032-0 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10393 |
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