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Agronomic biofortification with selenium impacts storage proteins in grains of upland rice
Author(s) -
Reis Heitor Pontes Gestal,
Queiroz Barcelos Jéssica Pigatto,
Silva Vinícius Martins,
Santos Elcio Ferreira,
Tavanti Renan Francisco Rimoldi,
Putti Fernando Ferrari,
Young Scott D,
Broadley Martin R,
White Philip J,
Reis André Rodrigues
Publication year - 2020
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.10212
Subject(s) - biofortification , glutelin , prolamin , selenium , biology , agronomy , population , zoology , micronutrient , chemistry , storage protein , medicine , biochemistry , environmental health , organic chemistry , gene
BACKGROUND Selenium (Se) is an essential element for humans and animals. Rice is one of the most commonly consumed cereals in the world, so the agronomic biofortification of cereals with Se may be a good strategy to increase the levels of daily intake of Se by the population. This study evaluated the agronomic biofortification of rice genotypes with Se and its effects on grain nutritional quality. Five rates of Se (0, 10, 25, 50, and 100 g ha − 1 ) were applied as selenate via the soil to three rice genotypes under field conditions. RESULTS Selenium concentrations in the leaves and polished grains increased linearly in response to Se application rates. A highly significant correlation was observed between the Se rates and the Se concentration in the leaves and grains, indicating high translocation of Se. The application of Se also increased the concentration of albumin, globulin, prolamin, and glutelin in polished grains. CONCLUSION Biofortifying rice genotypes using 25 g Se ha − 1 could increase the average daily Se intake from 4.64 to 66 μg day −1 . Considering that the recommended daily intake of Se by adults is 55 μg day −1 , this agronomic strategy could contribute to alleviating widespread Se malnutrition. © 2019 Society of Chemical Industry