Grain Inorganic Arsenic Content in Rice Managed Through Targeted Introgressions and Irrigation Management.

ABSTRACT: Arsenic (As) accumulation in rice grain is a significant public health concern. Inorganic As (iAs) is of particular concern because it has increased toxicity as compared to organic As. Irrigation management practices, such as alternate wetting and drying (AWD), as well as genotypic differences between cultivars, have been shown to influence As accumulation in rice grain. A 2 year field study using a Lemont × TeQing backcross introgression line (TIL) mapping population examined the impact of genotype and AWD severity on iAs grain concentrations. The "Safe"-AWD [35-40% soil volumetric water content (VWC)] treatment did not reduce grain iAs levels, whereas the more severe AWD30 (25-30% VWC) consistently reduced iAs concentrations across all genotypes. The TILs displayed a range of iAs concent

SUBMITTER: Fernandez-Baca CP 

PROVIDER: S-EPMC7868431 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature