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Using Fe biofortification strategies to reduce both Ni concentration and oral bioavailability for rice with high Ni

Due to naturally high Ni or soil Ni contamination, high Ni concentrations are reported in rice, raising a need to reduce rice Ni exposure risk. Here, reduction in rice Ni concentration and Ni oral bioavailability with rice Fe biofortification and dietary Fe supplementation was assessed using rice cu...

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Bibliographic Details
Published in:Journal of hazardous materials 2023-06, Vol.452, p.131367-131367, Article 131367
Main Authors: Lin, Xin-Ying, Liang, Jia-Hui, Jiao, Duo-Duo, Chen, Jun-Xiu, Wang, Ning, Ma, Lena Q., Zhou, Dongmei, Li, Hong-Bo
Format: Article
Language:English
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Summary:Due to naturally high Ni or soil Ni contamination, high Ni concentrations are reported in rice, raising a need to reduce rice Ni exposure risk. Here, reduction in rice Ni concentration and Ni oral bioavailability with rice Fe biofortification and dietary Fe supplementation was assessed using rice cultivation and mouse bioassays. Results showed that for rice grown in a high geogenic Ni soil, increases in rice Fe concentration from ∼10.0 to ∼30.0 μg g–1 with foliar EDTA-FeNa application led to decreases in Ni concentration from ∼4.0 to ∼1.0 μg g–1 due to inhibited Ni transport from shoot to grains via down-regulated Fe transporters. When fed to mice, Fe-biofortified rice was significantly (p 
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2023.131367