Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2017 Aug;24(23):18926-18935.
doi: 10.1007/s11356-017-9573-5. Epub 2017 Jun 27.

Underlying Mechanisms and Effects of Hydrated Lime and Selenium Application on Cadmium Uptake by Rice (Oryza Sativa L.) Seedlings

Affiliations

Underlying Mechanisms and Effects of Hydrated Lime and Selenium Application on Cadmium Uptake by Rice (Oryza Sativa L.) Seedlings

Gaoxiang Huang et al. Environ Sci Pollut Res Int. .

Abstract

A pot experiment was conducted to investigate the effects of selenium (Se) and hydrated lime (Lime), applied alone or simultaneously (Se+Lime), on growth and cadmium (Cd) uptake and translocation in rice seedlings grown in an acid soil with three levels of Cd (slight, mild, and moderate contamination). In the soil with 0.41 mg kg-1 Cd (slight Cd contamination), Se addition alone significantly decreased Cd accumulation in the root and shoot by 35.3 and 40.1%, respectively, but this tendency weakened when Cd level in the soil increased. However, Se+Lime treatment effectively reduced Cd accumulation in rice seedlings in the soil with higher Cd levels. The results also showed that Se application alone strongly increased Cd concentration in the iron plaque under slight Cd contamination, which was suggested as the main reason underlying the inhibition of Cd accumulation in rice seedlings. Se+Lime treatment also increased the ability of the iron plaques to restrict Cd uptake by rice seedlings across all Cd levels and dramatically decreased the available Cd concentration in the soil. These results suggest that Se application alone would be useful in the soil with low levels of Cd, and the effect would be enhanced when Se application is combined with hydrated lime at higher Cd levels.

Keywords: Cadmium; Iron plaque; Lime; Rice seedling; Selenium; Soil.

Similar articles

See all similar articles

References

    1. Environ Int. 2016 Jul-Aug;92-93:515-32 - PubMed
    1. J Trace Elem Med Biol. 2014 Jan;28(1):89-93 - PubMed
    1. Environ Sci Technol. 2009 Feb 15;43(4):1097-101 - PubMed
    1. J Agric Food Chem. 2015 Apr 8;63(13):3599-608 - PubMed
    1. Planta. 2015 Apr;241(4):907-16 - PubMed

LinkOut - more resources

Feedback