Plant bioelectric response to local laser irradiation

Yury H. Shogenov; Yuri A. Romanovsky

doi:10.1117/12.146172

17 June 1993 Plant bioelectric response to local laser irradiation

Yury H. Shogenov, Yuri A. Romanovsky

Proceedings Volume 1922, Laser Study of Macroscopic Biosystems; (1993) https://doi.org/10.1117/12.146172
Event: Laser Spectroscopy of Biomolecules: 4th International Conference on Laser Applications in Life Sciences, 1992, Jyvaskyla, Finland

Abstract

The phenomenon of pulse alteration of bioelectric potential difference (BEPD) U_(Beta ) approximately 10 mV between the top and the base of a plant is observed when a leaf is irradiated locally by a low intensity laser beam ((lambda) equals 632.8 nm, W approximately 40 mW/cm²). This effect is absent completely if an infrared laser ((lambda) equals 828.3 nm, W approximately 40 mW/cm²) is used for irradiation. There exists a threshold value of the background illumination below which U_(Beta ) equals 0. The speed of U_(Beta ) propagation from the irradiated zone along the axes plant organs is around 8 mm/sec. We observed the effect of U_(Beta ) transmission from the irradiated two weeks plant cucumber to a nonirradiated one, if the plant roots are contacting in the soil. We observed also the complex periodic BEPD response to the periodic local laser irradiation.

Citation Download Citation

Yury H. Shogenov and Yuri A. Romanovsky "Plant bioelectric response to local laser irradiation", Proc. SPIE 1922, Laser Study of Macroscopic Biosystems, (17 June 1993); https://doi.org/10.1117/12.146172

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