Luxury Zinc Supply Prevents the Depression of Grain Nitrogen Concentrations in Rice (Oryza sativa L.) Typically Induced by Elevated CO₂.

ABSTRACT: Rice (Oryza sativa L.) has inherently low concentrations of nitrogen (N) and zinc (Zn), and those concentrations are falling as the atmospheric concentration of carbon dioxide ([CO₂]) increases, threatening the quality of human diets. We investigated the effect of two levels of Zn supply (marginal and luxury), on Zn and N concentrations in whole grain of two indica rice cvv. Differing in Zn-efficiency (IR26 (inefficient) and IR36 (efficient)), grown in sand culture at ambient (400 µL CO₂ L^-1 (a[CO₂])) and elevated (700 µL CO₂ L^-1 (e[CO₂])) CO₂ concentrations. For both cvv., luxury Zn-supply increased vegetative growth, and the foliar and grain Zn concentrations; the increases in grain yield were

SUBMITTER: Nakandalage N 

PROVIDER: S-EPMC9963902 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature