Bioelectric response of plants to local low-intensity irradiation in the spectral range of 330 to 1300 nm

Yury H. Shogenov; Elena A. Mironova; Vera Yu. Moiseenkova; Yury M. Romanovsky

doi:10.1117/12.306051

24 April 1998 Bioelectric response of plants to local low-intensity irradiation in the spectral range of 330 to 1300 nm

Yury H. Shogenov, Elena A. Mironova, Vera Yu. Moiseenkova, Yury M. Romanovsky

Proceedings Volume 3251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications II; (1998) https://doi.org/10.1117/12.306051
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

The choice of the qualitative method of estimation of the reaction of a living system to the light irradiation is the main problem in the measurements of spectra of action. It was demonstrated earlier that the bioelectric reaction (BER) on a low-level local laser irradiation can be used for these measurements. We determined the dependence of the BER of a plant on the wavelength (lambda) of the coherent and incoherent irradiation. In the visible spectral range the dependence of BER on (lambda) coincides with chlorophyll absorption spectrum and the peak at 1015 - 1300 nm is related probably with water absorption. The dependence of BER on I is of the threshold type. The wavelength dependence of the transmittance of an intact green leaf nearly coincides with its photoacoustic spectrum. Thus, the proposed nondisturbing methods make it possible to determine the optical parameters of a living plant.

Citation Download Citation

Yury H. Shogenov, Elena A. Mironova, Vera Yu. Moiseenkova, and Yury M. Romanovsky "Bioelectric response of plants to local low-intensity irradiation in the spectral range of 330 to 1300 nm", Proc. SPIE 3251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications II, (24 April 1998); https://doi.org/10.1117/12.306051

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