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Accumulation and Translocation of Lead and Cadmium in Lyophyllum decastes

Summary

This research investigated how an edible mushroom species handles toxic heavy metals like lead and cadmium in its environment. The findings show that the mushroom responds differently to these metals, effectively blocking lead while readily absorbing and moving cadmium throughout its structure. Impacts on everyday life: • Helps assess food safety risks in mushrooms grown in contaminated soils • Provides insights for safer mushroom cultivation practices • Contributes to understanding environmental contamination monitoring • Informs dietary considerations for mushroom consumption in polluted areas • Assists in developing better agricultural practices for mushroom farming

Background

Lyophyllum decastes is a precious edible mushroom with a simple structure. Mushrooms have been shown to accumulate heavy metals, making them important subjects for studying metal accumulation and transfer patterns.

Objective

To investigate the accumulation and transfer patterns of lead (Pb) and cadmium (Cd) in L. decastes and evaluate how these heavy metals affect the mushroom’s agronomic traits and yield.

Results

The addition of Pb and Cd negatively affected aerial mycelium growth and decreased mycelial growth rates. Cd reached maximum tolerance at 50 mg L-1, while Pb tolerance exceeded 1500 mg L-1. Both metals deteriorated agronomic traits and decreased yield, with Cd showing greater negative effects than Pb at equal concentrations (20 mg kg-1). BAF values for Pb were 1, showing strong transfer ability.

Conclusion

L. decastes demonstrates different accumulation patterns for Pb and Cd, acting as a bioexcluder for Pb while showing strong transfer ability for Cd. This research advances understanding of heavy metal accumulation and distribution in mushrooms, with implications for food safety and environmental monitoring.
  • Published in:Environmental Geochemistry and Health,
  • Study Type:Laboratory Research,
  • Source: 10.1007/s10653-025-02476-y
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