Effects of different LED light quality on the growth and development of Ganoderma lucidum fruiting body

WANG Xing-hua; XIONG Xi; HUANG Wen-long; CAO Ru-dai; HUANG Yan-fang; QI Yi; TONG Yu-zhen; ZENG Kai-lin; WANG Li-han; ZHENG Hai-shan; YU Feng-yan; YU Hai-bing

doi:10.3969/j.issn.1005-4057.2024.03.003

Abstract：Objective To study the effects of different LED light qualities on the growth and development of Ganoderma lucidum substrates and their main active components.Methods Ganoderma lucidum substrates were cultured by setting LED light sources with different light qualities as light conditions,and the growth rate,morphology,polysaccharide content,and triterpene content were observed and measured as indicated methods.Results The diameter and dry weight of Ganoderma lucidum fruitum in red,green,yellow,white and blue light treatment groups were higher than those in dark group(P<0.01 or 0.05),and the dry weight of Ganoderma lucidum fruitum body in yellow light group was the largest(P<0.01 or 0.05).There was no statistical significance in the number of germination of Ganoderma lucidum fruitum and the thickness of fungus cap between the two groups(P>0.05).During the five growth periods of Ganoderma lucidum,the polysaccharide content of the blue light group was significantly higher than that of all other groups(P<0.01);during the bud-breaking stage,umbrella-opening stage,and pre-spores popping stage,the polysaccharide content of the yellow light group was higher than that of all other groups except the blue light group(P<0.01);and during the post-spores popping stage,the polysaccharide content of the white light group was significantly higher than that of all other groups except the blue light group(P<0.01).During the cap formation period,the triterpene content of Ganoderma lucidum in the red light group was lower than that in the other light quality groups and the dark group(P<0.01);during the pre-sporulation period,the triterpene content of Ganoderma lucidum was higher than that in the dark group in the green light,white light,red light and blue light groups(P<0.01 or 0.05).At the present bud stage,the opening stage and the late stage of spore popping,the difference of Ganoderma triterpene content between the groups was not statistically significant(P>0.05).Conclusion All five LED light qualities affected the growth and development of Ganoderma lucidum substrate and the production of its main active ingredients,and the light should be rationally arranged according to the characteristics of different effects of each light quality on Ganoderma lucidum substrate.