NGUYEN, Christophe; ROUCOU, Agathe; GRIGNON, Guénolé; CORNU, Jean-Yves; MELEARD, Benoit

doi:10.1016/j.jhazmat.2020.123131

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NGUYEN, Christophe
Interactions Sol Plante Atmosphère [UMR ISPA]

ROUCOU, Agathe
ARVALIS - Institut du Végétal [Boigneville]

GRIGNON, Guénolé
ARVALIS - Institut du Végétal [Boigneville]

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Article de revue

Ce document a été publié dans

Journal of Hazardous Materials. 2021-01, vol. 401, p. 1-12

Elsevier

Résumé en anglais

Contamination of durum wheat grain by cadmium (Cd) threatens food safety and is of increasing concern because regulations concerning Cd are becoming stricter due to its toxicity. This work aimed at using soil variables and cultivar types to build models to predict whether durum wheat grain Cd will conform with current and possibly lower regulatory thresholds. We combined multiple Gaussian and logistic regressions and the random forest algorithm to take advantage of their strength. Models tested using cross-validation produced excellent performances including for the lowest regulatory threshold of 0.1 mg Cd/kg, half of the current one: 79–85% of the non-conformity cases were detected and the reliability of predictions was 69–82%. The models enabled identification of a x1.4 variability in grain Cd content between cultivars that do not have the low Cd accumulation allele of the Cdu1 gene. The models confirmed that for the grain Cd content, the between-cultivar variability had much less influence than the phytoavailability of Cd in soil, the critical contexts of which were characterized by the models. For farmers, these models are valuable tools to predict whether durum wheat production will conform with existing and future Cd regulation in foodstuffs.< Réduire

Mots clés en anglais

Genetic variability

Models

Phytoavailability

Cadmium

Durum wheat

URI

https://oskar-bordeaux.fr/handle/20.500.12278/195541

DOI

http://dx.doi.org/10.1016/j.jhazmat.2020.123131

Project ANR

Cadmium et Deoxynivalenol dans les récoltes de blé dur: comprendre les évènements de contamination croisée et évaluer la toxicité du mélange. - ANR-15-CE21-0001

Origine

Importé de hal

Unités de recherche

Interactions Soil Plant Atmosphere (ISPA) - UMR 1391