Related Experiment Video
Updated: Nov 17, 2025

Autofluorescence Imaging to Evaluate Red Algae Physiology
Published on: February 17, 2023
Influence of far-red light coherence on the functional state of plants
A V Budagovsky1,2, N V Solovykh2, O N Budagovskaya1,2
1Michurinsk State Agrarian University, ulitsa Internationalnaya, 101, 393760 Michurinsk, Tambov Region, Russia.
Abstract:
The influence of the coherence of far-red (730 nm) light on the functional activity of plants was studied. Blackberry explants cultivated in vitro on an artificial nutrient medium served as a biological model. The explants were irradiated with light beams with different spatial and temporal coherence. The average cell size D was taken as the discrimination threshold for the coherence length L_{coh} and the correlation radius r_{cor}. The results of irradiation were judged by the length and number of shoots formed on each explant. The greatest photoinduced effect was observed when the conditions L_{coh}, r_{cor}>D were fulfilled, i.e., when the cell fit completely in the coherence volume of the light wave field. Significant differences in growth parameters were also observed in the variants of the experiment with a constant frequency spectrum of radiation (fixed L_{coh}), but different r_{cor}. It is concluded that the correlation properties of radiation affect photoregulatory processes.
Related Concept Videos
Photoreceptors and Plant Responses to Light
Cell Signaling in Plants
Biological Clocks and Seasonal Responses
Light as Energy
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
Channel Rhodopsins
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
Short-distance Transport of Resources

