Tags

Type your tag names separated by a space and hit enter

Cadmium allocation to grains in durum wheat exposed to low Cd concentrations in hydroponics.
Ecotoxicol Environ Saf. 2019 Nov 30; 184:109592.EE

Abstract

This study aims to characterize the response of durum wheat to different concentrations of Cd found in agricultural soils. One French durum wheat cultivar (i.e. Sculptur) was exposed to low concentrations of Cd (5 nM or 100 nM) in hydroponics. After anthesis, the plants were fed with a solution enriched with the stable isotope 111Cd to trace the newly absorbed Cd. Plants were sampled at anthesis and grain maturity to assess how plant growth, Cd uptake and partitioning among organs, as well as Cd remobilization, differed between the two Cd exposure levels. Durum wheat did not show any visual symptoms of Cd toxicity, regardless of which Cd treatment was applied. However, post-anthesis durum wheat growth was 14% penalized at 100 nM due to the large transpiration-based accumulation of Cd in leaves at this stage. The allocation of Cd to the grains was not restricted but enhanced at 100 nM compared to 5 nM. Both the root-to-shoot Cd translocation and the fraction of aboveground Cd allocated to grains were higher in plants exposed to 100 nM. Cadmium was remobilized exclusively from roots and stems, and remobilized Cd contributed on average to 40-45% of the Cd accumulated in mature grains, regardless of which Cd treatment was applied. The relevance of these results to decreasing the concentration of Cd in durum wheat grains is discussed.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Yan BF
ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France.
Nguyen C
ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France.
Pokrovsky OS
Université Toulouse, CNRS, GET, UMR 5563, F-31400, Toulouse, France; IO-GEO-CLIM Laboratory, Tomsk State University, 36 Lenina Prospekt, Tomsk, 630050, Russia.
Candaudap F
Université Toulouse, CNRS, GET, UMR 5563, F-31400, Toulouse, France.
Coriou C
ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France.
Bussière S
ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France.
Robert T
ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France.
Cornu JY
ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France. Electronic address: jean-yves.cornu@inra.fr.

MeSH

Biological TransportCadmiumEdible GrainHydroponicsPlant LeavesPlant RootsPlant ShootsTriticumWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31499445

Citation

Yan, B F., et al. "Cadmium Allocation to Grains in Durum Wheat Exposed to Low Cd Concentrations in Hydroponics." Ecotoxicology and Environmental Safety, vol. 184, 2019, p. 109592.
Yan BF, Nguyen C, Pokrovsky OS, et al. Cadmium allocation to grains in durum wheat exposed to low Cd concentrations in hydroponics. Ecotoxicol Environ Saf. 2019;184:109592.
Yan, B. F., Nguyen, C., Pokrovsky, O. S., Candaudap, F., Coriou, C., Bussière, S., Robert, T., & Cornu, J. Y. (2019). Cadmium allocation to grains in durum wheat exposed to low Cd concentrations in hydroponics. Ecotoxicology and Environmental Safety, 184, 109592. https://doi.org/10.1016/j.ecoenv.2019.109592
Yan BF, et al. Cadmium Allocation to Grains in Durum Wheat Exposed to Low Cd Concentrations in Hydroponics. Ecotoxicol Environ Saf. 2019 Nov 30;184:109592. PubMed PMID: 31499445.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium allocation to grains in durum wheat exposed to low Cd concentrations in hydroponics. AU - Yan,B F, AU - Nguyen,C, AU - Pokrovsky,O S, AU - Candaudap,F, AU - Coriou,C, AU - Bussière,S, AU - Robert,T, AU - Cornu,J Y, Y1 - 2019/09/20/ PY - 2019/03/29/received PY - 2019/07/16/revised PY - 2019/08/19/accepted PY - 2019/9/10/pubmed PY - 2019/12/18/medline PY - 2019/9/10/entrez KW - Cereal KW - Metals KW - Remobilization KW - Source-sink relationships KW - Stable isotope labeling KW - Toxicity SP - 109592 EP - 109592 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 184 N2 - This study aims to characterize the response of durum wheat to different concentrations of Cd found in agricultural soils. One French durum wheat cultivar (i.e. Sculptur) was exposed to low concentrations of Cd (5 nM or 100 nM) in hydroponics. After anthesis, the plants were fed with a solution enriched with the stable isotope 111Cd to trace the newly absorbed Cd. Plants were sampled at anthesis and grain maturity to assess how plant growth, Cd uptake and partitioning among organs, as well as Cd remobilization, differed between the two Cd exposure levels. Durum wheat did not show any visual symptoms of Cd toxicity, regardless of which Cd treatment was applied. However, post-anthesis durum wheat growth was 14% penalized at 100 nM due to the large transpiration-based accumulation of Cd in leaves at this stage. The allocation of Cd to the grains was not restricted but enhanced at 100 nM compared to 5 nM. Both the root-to-shoot Cd translocation and the fraction of aboveground Cd allocated to grains were higher in plants exposed to 100 nM. Cadmium was remobilized exclusively from roots and stems, and remobilized Cd contributed on average to 40-45% of the Cd accumulated in mature grains, regardless of which Cd treatment was applied. The relevance of these results to decreasing the concentration of Cd in durum wheat grains is discussed. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/31499445/Cadmium_allocation_to_grains_in_durum_wheat_exposed_to_low_Cd_concentrations_in_hydroponics_ DB - PRIME DP - Unbound Medicine ER -