Electrical Impedance Analysis in Plant Tissues11
- 1 November 1991
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Experimental Botany
- Vol. 42 (11) , 1465-1475
- https://doi.org/10.1093/jxb/42.11.1465
Abstract
Electrical impedance was measured at a range of AC frequencies of 100 Hz to 1 MHz in potato tubers and carrot roots. Details of a method for analysing the data in relation to electrical models, using complex non-linear least squares (CNLS), are described. The measured data were analysed in relation to four previously-described electrical models for plant tissues. The results showed that plant tissue conforms well to a double-shell model which includes components (resistors and capacitors) representing the vacuole, as well as cytoplasm, plasma membrane, and extracellular space. The method permitted the calculation of specific membrane capacitance, which was found to approximate l0μF cm−2.Keywords
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