Comparing soil-to-plant cadmium (Cd) transfer and potential human intake among rice cultivars with different Cd tolerance levels grown in a tropical contaminated soil.

Autor: Nogueira TAR; Department of Plant Protection, Rural Engineering, and Soils, School of Engineering, São Paulo State University, SP, 15385-000, Ilha Solteira, Brazil. tar.nogueira@unesp.br.; School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de acesso Prof. Paulo Donato Castellane, s/n, Jaboticabal, SP, 14884-900, Brazil. tar.nogueira@unesp.br., Muraoka T; Centre of Nuclear Energy in Agriculture, Universidade de São Paulo, Piracicaba, SP, 13416-000, Brazil., Silveira LK; Centre of Nuclear Energy in Agriculture, Universidade de São Paulo, Piracicaba, SP, 13416-000, Brazil., da Silva JS; Federal Institute of São Paulo, Avaré, SP, 13400-970, Brazil., Abreu-Junior CH; Centre of Nuclear Energy in Agriculture, Universidade de São Paulo, Piracicaba, SP, 13416-000, Brazil., Lavres J; Centre of Nuclear Energy in Agriculture, Universidade de São Paulo, Piracicaba, SP, 13416-000, Brazil., Martinelli AP; Centre of Nuclear Energy in Agriculture, Universidade de São Paulo, Piracicaba, SP, 13416-000, Brazil., Teixeira Filho MCM; Department of Plant Protection, Rural Engineering, and Soils, School of Engineering, São Paulo State University, SP, 15385-000, Ilha Solteira, Brazil., He Z; Indian River Research and Education Centre, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, FL, 34945-3138, USA., Jani AD; Department of Biology and Chemistry, California State University, Monterey Bay, Seaside, CA, 93933, USA., Ganga A; Dipartimento Di Architettura, Design E Urbanistica, Università Degli Studi Di Sassari, 07100, Polo Bionaturalistico, Italy., Capra GF; Dipartimento Di Architettura, Design E Urbanistica, Università Degli Studi Di Sassari, 07100, Polo Bionaturalistico, Italy.; Desertification Research Centre, Università Degli Studi Di Sassari, 07100, Sassari, Italy.
Jazyk: angličtina
Zdroj: Environmental monitoring and assessment [Environ Monit Assess] 2021 Dec 10; Vol. 194 (1), pp. 20. Date of Electronic Publication: 2021 Dec 10.
DOI: 10.1007/s10661-021-09655-1
Abstrakt: With its accumulation in upland rice, cadmium (Cd) can easily enter the human food chain, which poses a global health threat considering nearly half of the human population depends on rice as a staple food source. A study was conducted to (1) evaluate Cd accumulation by rice cultivars, grown in Cd-polluted Tropical Oxisols, with different levels of Cd tolerance; (2) quantify Cd transfer from soil to rice shoots and grain; and (3) estimate daily Cd intake by humans. Three rice cultivars, characterized by low (Cateto Seda-CS), medium (BRSMG Talento-BT), and high (BRSMG Caravera-BC) Cd uptake capacity, were investigated. Rice cultivars were exposed to increasing soil Cd concentrations (0.0, 0.7, 1.3, 3.9, 7.8, and 11.7 mg kg -1 ). Analysis was performed on soil, shoots, and grain. Shoot biomass and grain yield decreased with increasing Cd supply, suggesting the following Cd tolerance: CS > BT > BC. Cadmium concentrations in shoots and grain increased when exposed to Cd. Only CS did not exceed the maximum Cd limit permitted in food (0.40 mg kg -1 ), when rates up to 1.3 mg kg -1 of Cd were applied to soil. Considering daily rice consumption levels in Brazil, Cd intake often exceeds maximum tolerable levels. Continuous monitoring of soil Cd concentrations is a pivotal step in avoiding hazards to humans. Such monitoring is important on a global scale since outside of Asia, Brazil is the leading rice-producing and rice-consuming country.
(© 2021. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
Databáze: MEDLINE
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