Characterization of a major QTL for manganese accumulation in rice grain.

ABSTRACT: Some diets lack sufficient manganese (Mn), an essential mineral. Increasing Mn in grain by biofortification could prevent Mn deficiency, but may increase levels of the toxic element cadmium (Cd). Here, we investigated Mn in rice (Oryza sativa) grains in recombinant inbred lines (RILs) from the cross of 93-11 (low grain Mn) with PA64s (high grain Mn). Quantitative trait locus (QTL) analysis to identify loci controlling grain Mn identified a major QTL, qGMN7.1, on the short arm of chromosome 7; qGMN7.1 explained 15.6% and 22.8% of the phenotypic variation in the RIL populations grown in two distinct environments. We validated the QTL with a chromosome segment substitution line (CSSL), CSSL-qGMN7.1, in the 93-11 background harboring qGMN7.1 from PA64s. Compared to 93-11, CSSL-qGMN7.1 grain ha

SUBMITTER: Liu C 

PROVIDER: S-EPMC5735179 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature