Genotypic Variation in Rice Root Exudates Controls Biological Nitrification Inhibition Efficiency in the Rhizosphere.
Genotypic variation in rice influences BNI efficiency, with high-BNI genotypes producing more exudates like NBDA that inhibit nitrifiers and reduce N2O emissions.
- Why it matters: Understanding how rice plants naturally suppress nitrification can help develop sustainable strategies to reduce nitrogen loss and greenhouse gas emissions in rice cultivation.
- What they did: The study examined five rice genotypes by analyzing plant physiology, soil nitrification, and root exudate metabolites, identifying key traits and compounds linked to BNI effectiveness.
- The result: High-BNI genotypes showed greater biomass, N uptake, and exudation of NBDA, which effectively inhibits nitrifiers without affecting non-target microbes, paving the way for improved nitrification mitigation.