Metagenomic Insights into the Root‒Soil Response Mechanisms of Indica and Japonica Rice Under Nitrogen Deficiency and High-Efficiency Nitrogen Compensation.

ABSTRACT: Nitrogen (N) dynamics critically regulate rice productivity through root-mediated absorption and assimilation processes. This study investigates the differential responses of japonica (Suxiu 867) and indica (Yangxianyou 918) rice to N deficiency and subsequent high-efficiency compensation, integrating metagenomic analysis with physiological assessments of N metabolism. Building on an established high-efficiency N compensation period (18 days after tillering for japonica and 12 days for indica), we demonstrate that optimized N compensation significantly enhances dry matter accumulation and yield in both subspecies through distinct biological mechanisms. Compensation treatment elevated key metabolic indicators including soluble protein content (Cpr), glutamine synthetase (GDH) activity, soil

SUBMITTER: Xiong Q 

PROVIDER: S-EPMC12297215 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature