This research examined the bacterial communities living inside Chinese black truffles from different regions of China. The study revealed that specific bacteria consistently live within truffles regardless of location, suggesting they play important roles in truffle development. Some of these bacteria can fix nitrogen and make nutrients available to the truffle. Impacts on everyday life: – Helps understand how to better cultivate truffles for food production – Provides insights into sustainable agriculture through beneficial plant-microbe relationships – Could lead to improved truffle farming techniques and increased availability of truffles – Demonstrates the importance of beneficial bacteria in food production – May help develop new ways to grow truffles in different geographical regions