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Hydrogen-rich water alleviates the toxicities of different stresses to mycelial growth in Hypsizygus marmoreus

Summary

This research demonstrates how hydrogen-rich water can help protect commercially grown mushrooms from various environmental stresses and contaminants. The treatment helps mushrooms grow better by activating their natural defense systems and improving their metabolism. This has several practical implications: • Could lead to improved mushroom cultivation techniques with higher yields • Offers a safe and effective way to deal with contamination in mushroom growing substrates • May help reduce losses in commercial mushroom production • Could contribute to safer and more efficient food production methods • Demonstrates potential applications for hydrogen-rich water in agriculture

Background

Hypsizygus marmoreus is a commercially important edible mushroom that can be negatively affected by contaminants in agricultural waste substrates used for cultivation. These contaminants, including heavy metals, can inhibit mushroom growth and reduce fruit body production. While hydrogen gas has been shown to enhance stress tolerance in plants, its effects on fungal growth under different stresses remains largely unclear.

Objective

To characterize the physiological roles and molecular mechanisms of hydrogen-rich water (HRW) in alleviating three different types of stress (CdCl2, NaCl, and H2O2) in the basidiomycete Hypsizygus marmoreus.

Results

HRW treatment significantly reduced the toxicities of CdCl2, NaCl and H2O2, leading to improved mycelial growth and biomass. The treatment decreased malondialdehyde formation and increased activities of antioxidant enzymes (SOD, CAT, GR). HRW also reduced ROS levels and lipid peroxidation while activating pyruvate kinase activity and its gene expression, suggesting enhanced glucose metabolism.

Conclusion

Hydrogen-rich water treatment effectively alleviates oxidative stress and enhances antioxidant capabilities in H. marmoreus mycelia exposed to different stressors. The treatment activates both antioxidant systems and glucose metabolism pathways, making it a potentially effective approach for contaminant detoxification in mushroom cultivation.
  • Published in:AMB Express,
  • Study Type:Laboratory Experimental Study,
  • Source: 10.1186/s13568-017-0406-1
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