This research investigated how microorganisms in compost interact with oyster mushrooms during cultivation. The study found that certain beneficial bacteria, particularly Actinomycetales, work cooperatively with oyster mushrooms to break down plant materials and support mushroom growth. This has important implications for improving mushroom cultivation. Impacts on everyday life: • More efficient and sustainable mushroom production methods • Better understanding of how to optimize composting for mushroom growing • Potential for increased mushroom yields and quality • Development of more environmentally friendly cultivation techniques • Improved food production efficiency through better understanding of beneficial microbes