Influence of light regulation on growth and enzyme production in rare endolichenic fungi

Gan, Peck Ting; Lim, Yau Yan; Ting, Adeline Su Yien

doi:10.1007/s12223-023-01050-2

Cited by 4 publications

(2 citation statements)

References 56 publications

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“…This might indicate that the effects of light quality on extracellular enzymes in edible fungi are variety-dependent. Gan et al found that blue light enhanced the activity of fungal amylase, which was consistent with the present results that continuous blue light treatment (B) increased the activity of amylase in Ganoderma lucidum compared with the control [39]. However, our study also found that intermittent blue light treatment (B-) reduced the activity of amylase in the Ganoderma lucidum pileus and stipe, indicating that not all blue light could increase the activity of amylase in Ganoderma lucidum, possibly due to darkness during the alternating process.…”

Section: Discussionsupporting

confidence: 93%

Study on the Effects of Different Light Supply Modes on the Development and Extracellular Enzyme Activity of Ganoderma lucidum

Liu,

Luo,

Guo

et al. 2024

Agriculture

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Edible fungi have certain photo-sensitivity during the mushroom emergence stage, but there have been few relevant studies on the responses of Ganoderma lucidum to different light irradiation conditions. Ganoderma lucidum were planted in an environmentally controllable mushroom room with different light supply modes that were, respectively, continuous white light (CK), red light (R), green light (G), blue light (B), and intermittent red light (R-), green light (G-), and blue light (B-), with a total light intensity of 15 μmol·m−2·s−1 and a light/dark (L/D) period of 12 h/12 h for each treatment. The interval in intermittent light treatments was 30 min. The optimal light supply mode suitable for the growth of Ganoderma lucidum was explored by analyzing the characteristics, nutritional quality, and extracellular enzyme activity in mushrooms exposed to different light treatments. The results showed that red light (whether in continuous or intermittent supply modes) inhibited the fruiting body differentiation of Ganoderma lucidum, showing delayed differentiation or complete undifferentiation. The highest stipe length and pileus diameter of fruiting bodies were detected under G- treatment, which were, respectively, increased by 71.3% and 3.2% relative to the control. The highest weight of fruiting bodies was detected under G treatment, which was significantly increased by 21.4% compared to the control (p < 0.05). Intermittent light mode seemed to be more conducive to the size development of the fruiting body, while continuous light mode was beneficial for increasing the weight. The highest contents of crude protein and total triterpenes in pileus were detected under G treatment (significantly 14.9% and 28.1% higher than the control, respectively), while that of the crude polysaccharide was detected under G- treatment (significantly 35.7% higher than the control) (p < 0.05). The highest activities of extracellular enzymes such as cellulase, hemicellulase, laccase, lignin peroxidase, and amylase were detected in fruiting bodies subjected to G treatment, which were significantly increased by 11.9%~30.7% in the pileus and 9.5%~44.5% in the stipe. Green light might increase the weight and nutrient accumulation in the pileus of Ganoderma lucidum via up-regulating the extracellular enzyme activities. This study provides an effective light supply strategy for regulating the light environment in the industrial production of Ganoderma lucidum.

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Section: Discussionsupporting

confidence: 93%

Study on the Effects of Different Light Supply Modes on the Development and Extracellular Enzyme Activity of Ganoderma lucidum

Liu,

Luo,

Guo

et al. 2024

Agriculture

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“…Ramírez et al ( 46 ) reported that blue light significantly reduced the activity of lignin peroxidase in Phanerochaete chrysosporium Burds in relative to white light. On the contrary, Gan et al ( 47 ) and Zhu et al ( 48 ) reported that blue light increased the activity of amylase in Pseudopestalotiopsis theae, Fusarium solani, Xylaria venustula and Aspergillus niger compared with the white light. The results in our study displayed that the activities of the manganese peroxidase, lignin peroxidase and amylase were all increased in L. decastes treated with B compared with the control.…”

Section: Discussionmentioning

confidence: 96%

The development and nutritional quality of Lyophyllum decastes affected by monochromatic or mixed light provided by light-emitting diode

Chen,

Liu,

Guo

et al. 2024

Front. Nutr.

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Edible fungi has certain photo-sensitivity during the mushroom emergence stage, but there has been few relevant studies on the responses of Lyophyllum decastes to different light quality. L. decastes were planted in growth chambers with different light qualities that were, respectively, white light (CK), monochromatic red light (R), monochromatic blue light (B), mixed red and blue light (RB), and the mixture of far-red and blue light (FrB). The photo-sensitivity of L. decastes was investigated by analyzing the growth characteristics, nutritional quality, extracellular enzymes as well as the light photoreceptor genes in mushroom exposed to different light treatments. The results showed that R led to mycelium degeneration, fungal skin inactivation and failure of primordial formation in L. decastes. The stipe length, stipe diameter, pileus diameter and the weight of fruiting bodies exposed to RB significantly increased by 8.0, 28.7, 18.3, and 58.2% respectively, compared to the control (p < 0.05). B significantly decreased the stipe length and the weight of fruiting body, with a decrease of 8.5 and 20.2% respectively, compared to the control (p < 0.05). Increased color indicators and deepened simulated color were detected in L. decastes pileus treated with B and FrB in relative to the control. Meanwhile, the expression levels of blue photoreceptor genes such as WC-1, WC-2 and Cry-DASH were significantly up-regulated in mushroom exposed to B and FrB (p < 0.05). Additionally, the contents of crude protein and crude polysaccharide in pileus treated with RB were, respectively, increased by 26.5 and 9.4% compared to the control, while those in stipes increased by 5.3 and 58.8%, respectively. Meanwhile, the activities of extracellular enzyme such as cellulase, hemicellulase, laccase, manganese peroxidase, lignin peroxidase and amylase were significant up-regulated in mushroom subjected to RB (p < 0.05), which may promote the degradation of the culture materials. On the whole, the largest volume and weight as well as the highest contents of nutrients were all detected in L. decastes treated with RB. The study provided a theoretical basis for the regulation of light environment in the industrial production of high quality L. decastes.

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Inducing antioxidant and antimicrobial activities in endophytic and endolichenic fungi by the use of light spectra treatments

2023

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Influence of light regulation on growth and enzyme production in rare endolichenic fungi

Cited by 4 publications

References 56 publications

Study on the Effects of Different Light Supply Modes on the Development and Extracellular Enzyme Activity of Ganoderma lucidum

Study on the Effects of Different Light Supply Modes on the Development and Extracellular Enzyme Activity of Ganoderma lucidum

The development and nutritional quality of Lyophyllum decastes affected by monochromatic or mixed light provided by light-emitting diode

Inducing antioxidant and antimicrobial activities in endophytic and endolichenic fungi by the use of light spectra treatments

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