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Department of Plant Physiology and Biochemistry, Vasyl’ Stus Donetsk National University, 600-richya St. 21, Vinnytsia 21021, Ukraine The article presents the results of the study on the influence of laser irradiation on the development of vegetative mycelium and the period of the occurrence of the corcules of the fruit bodies of Pleurotus ostreatus. It has been established the growth processes of P. ostreatus, can be best stimulated by applying laser irradiation of mycelium with a green spectrum of light for 10 s. According to this mode of exposure, the best increase in the growth rate of mycelium of 38.3% and the appearance of the largest number of rudiments of the fruiting bodies were recorded. Laser irradiation of mycelium for 10 s with red and blue light spectrum increased the growth rate of mycelium from 7.41 to 20.4%, respectively, and the number of rudiments of the fruiting bodies increased by 1.5 to 2 times. Laser irradiation of the mycelium with 5 s, 15 s, and 20 s with red, blue, and green light spectra did not have a significant effect on the growth processes of P. ostreatus. These data open significant prospects for the modification of the existing cultivation technologies, which would increase the economic efficiency of the biotechnological cultivation process of P. ostreatus.

The influence of laser irradiation on the development of vegetative mycelium Pleurotus ostreatus