Dynamics and function of the GET system microbial community: insights into the role of the genus Bacillus in biogas production

The synchronization of the increase in <i>B. fumarioli</i> abundance with the increase in biogas production in the GET system indicated that <i>B. fumarioli</i> plays a key role in maintaining a perfect balance with the methanogenic archaea <i>Methanosaeta</i> by decomposing rice straw, subsequently producing VFA, and ultimately generating acetate, which serves as a substrate for methane production.This study provides the first functional insight into the role of <i>B. fumarioli</i> in efficient methane production under strictly anaerobic conditions.