Bacterial Interactions with the Mycelium of the Cultivated Edible Mushrooms Agaricus bisporus and Pleurotus ostreatus

Author: mycolabadmin
2022-12-15
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Summary

This research examines how bacteria interact with cultivated mushrooms during their growth, particularly focusing on button mushrooms and oyster mushrooms. The study reveals the complex relationships between bacteria and mushroom growth, showing how certain bacteria can help or hinder mushroom development. Impact on everyday life: – Improved understanding could lead to better mushroom cultivation techniques and higher yields – May result in more efficient and sustainable mushroom production methods – Could help reduce cultivation costs and make mushrooms more affordable – Potential applications in developing new organic farming practices – Knowledge gained could be applied to other agricultural systems

Background

The cultivated edible mushrooms Agaricus bisporus and Pleurotus ostreatus are valuable food crops and important sources of human nutrition. A. bisporus dominates cultivation in Western countries while P. ostreatus is more prevalent in Asia. Both species are grown on fermented-pasteurized substrates where bacteria play crucial roles in converting feedstocks into selective growth media and supporting mushroom development.

Objective

This review explores and characterizes the key interactions between bacteria and the mycelium of A. bisporus and P. ostreatus during cultivation, with focus on mechanisms affecting mycelial growth and primordia development. The review aims to identify research gaps and emphasize directions for future work to improve understanding of these essential interactions.

Results

The review found that bacterial biomass serves as a major nutrient source for mycelial growth, with A. bisporus producing specific bacteriolytic enzymes. Pseudomonas putida was identified as particularly important, promoting growth by reducing inhibitory ethylene levels and metabolizing growth-inhibiting volatile compounds. Bacteria also enhance fungal lignin degradation and are essential for primordia development, though mechanisms vary between species.

Conclusion

Current knowledge is largely limited to interactions between fluorescent pseudomonads and A. bisporus, with Ps. putida being the most studied model organism. More research is needed on other bacterial species and their interactions with both A. bisporus and P. ostreatus. Understanding these interactions is critical for defining compost quality and has potential to reduce colonization time, enhance nutrient assimilation, and improve mushroom yields.

Published in:Journal of Applied Microbiology,
Study Type:Review,
Source: 10.1093/jambio/lxac018