Rhizosphere priming of two near-isogenic wheat lines varying in citrate efflux under different levels of phosphorus supply

摘要

The rhizosphere priming effect (RPE) has been explained from the perspective of microbial responses to root exudates and nutrient availability. This study introduced a chemical process that could also contribute to RPE: root exudates (organic acid ligands) could liberate mineral-protected carbon (C) in soil for microbial degradation.