Periphytic biofilms modulate priming effect of soil organic matter mineralization in paddy soil

The priming process of soil organic matter (SOM) mineralization is crucial in regulating soil carbon supply. However, the role of periphytic biofilms (PB) at the water-soil interface in modulating SOM mineralization and its priming effect (PE) remains poorly understood. Therefore, we employed ¹³C-labeled PB and ¹³C-labeled glucose to investigate how PB biomass and growth influence SOM mineralization and PE in paddy soil.