The Impact of Microbial Communities on Agaricus bisporus and Pleurotus ostreatus Mushroom Cultivation

This paper provides an in-depth analysis of how microbes play a crucial role in improving the cultivation of two commercially important mushrooms: button mushroom (Agaricus bisporus) and oyster mushroom (Pleurotus ostreatus). It focuses on the interaction between beneficial bacteria and fungi at different stages of mushroom production, such as compost preparation, substrate colonization, and forming fruiting bodies. The variety and structure of microbial communities involved in mushroom farming are essential for enhancing substrate use. The relationship between microbes and mushrooms becomes particularly clear during composting, where microbial activities convert raw materials into a nutrient-dense environment favorable for mycelium growth. The changes in microbial populations seen throughout the different phases of composting, especially the rise in bacteria during the later stages, greatly influence the yield and quality of mushrooms. Additionally, the dynamics of microbes in the casing layer are crucial for helping mushrooms progress from the vegetative phase to the reproductive phase, aiding in the development and maturity of fruiting bodies. The paper emphasizes the contribution of microorganisms in enhancing mushroom yield by increasing nutrient availability in the substrate, facilitating mycelial growth, and offering protection against fungal pathogens. Furthermore, cellulases, xylanases, and ACC deaminase, which are microbial enzymes, increase nutrient accessibility and support hyphae extension which is crucial for the strong development of mycelium and the eventual formation of fruiting bodies. It also highlights the role of bacteria such as Azotobacter, Bacillus, and Pseudomonas in promoting substrate breakdown and mycelium development, as well as in suppressing diseases, particularly against pathogens like Trichoderma aggressivum and Pseudomonas tolaasii. The paper emphasizes the significance of microbial diversity in compost and casing layers and discusses how microbes contribute to substrate decomposition through enzymatic activities.