Rhizobacterial compositions and their relationships with soil properties and medicinal bioactive ingredients in Cinnamomum migao

Abstract

Several bacterial genera, including <i>Acidothermus</i>, <i>Acidibacter</i>, <i>Bryobacter</i>, <i>Candidatus_Solibacter</i>, and <i>Acidimicrobiales</i>, potentially promote the biosynthesis and accumulation of 1,8-cineole, cypressene, limonene, and α-terpineol, <i>Nitrospira</i> and <i>Alphaproteobacteria</i> may play an inhibitory role. Finally, our results emphasized the critical role that soil pH and nitrogen levels play in driving rhizobacterial community structure, and specific functional bacteria can also counteract with soil properties, <i>Acidibacter</i> and <i>Nitrospira</i> can affect soil pH and nitrogen effectiveness. Overall, this study provides additional insight into the complex correlation of rhizosphere microorganisms with bioactive ingredients and soil properties of medicinal plants.