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Suppression of cadmium concentration in wheat grains by silicon is related to its application rate and cadmium accumulating abilities of cultivars.
J Sci Food Agric. 2015 Sep; 95(12):2467-72.JS

Abstract

BACKGROUND

Cadmium concentration in food grains could be minimised through application of beneficial plant nutrients such as silicon. Therefore, the impact of silicon application on immobilisation of Cd in soil and its concentration in low and high shoot-Cd (LSCd and HSCd, respectively) cultivars of wheat were evaluated in a pot experiment. Selected LSCd cultivars (Iqbal-2000 and Lasani-2008) and HSCd cultivars (Inqlab-91 and Sehar-2006) were grown on artificially Cd contaminated soil at 10 mg Cd kg(-1) . Three levels of Si (50, 100 and 150 mg kg(-1) soil), applied as calcium silicate (CaSiO3), were tested.

RESULTS

None of the wheat cultivars showed any symptoms of toxicity or growth retardation against applied Cd stress. Silicon applied to Cd-treated plants did not improve root and shoot dry matter; however, it increased grain yield significantly at the highest rate of application (150 mg kg(-1) soil). Similarly, Si application at 150 mg kg(-1) decreased plant available soil Cd without affecting soil pH. Silicon application not only caused a linear decrease in Cd contents of shoots and grains but also decreased its translocation from roots to shoots and grains. Decrease in shoot Cd concentration was higher in HSCd than LSCd cultivars whereas the reverse was true for Cd concentration in grains.

CONCLUSION

Si addition decreased Cd concentration in wheat cultivars by causing a decrease in both plant-available soil Cd and its translocation from roots to shoots. Application of Si at 150 mg kg(-1) proved to be an effective level of Si that could significantly lower Cd concentration in wheat grains.

Authors+Show Affiliations

Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan. Soil Science Division, Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan.Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan.Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan.Department of Agronomy, University of Agriculture, Faisalabad, Pakistan.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25355244

Citation

Naeem, Asif, et al. "Suppression of Cadmium Concentration in Wheat Grains By Silicon Is Related to Its Application Rate and Cadmium Accumulating Abilities of Cultivars." Journal of the Science of Food and Agriculture, vol. 95, no. 12, 2015, pp. 2467-72.
Naeem A, Saifullah , Ghafoor A, et al. Suppression of cadmium concentration in wheat grains by silicon is related to its application rate and cadmium accumulating abilities of cultivars. J Sci Food Agric. 2015;95(12):2467-72.
Naeem, A., Saifullah, ., Ghafoor, A., & Farooq, M. (2015). Suppression of cadmium concentration in wheat grains by silicon is related to its application rate and cadmium accumulating abilities of cultivars. Journal of the Science of Food and Agriculture, 95(12), 2467-72. https://doi.org/10.1002/jsfa.6976
Naeem A, et al. Suppression of Cadmium Concentration in Wheat Grains By Silicon Is Related to Its Application Rate and Cadmium Accumulating Abilities of Cultivars. J Sci Food Agric. 2015;95(12):2467-72. PubMed PMID: 25355244.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Suppression of cadmium concentration in wheat grains by silicon is related to its application rate and cadmium accumulating abilities of cultivars. AU - Naeem,Asif, AU - Saifullah,, AU - Ghafoor,Abdul, AU - Farooq,Muhammad, Y1 - 2014/11/25/ PY - 2014/08/04/received PY - 2014/09/29/revised PY - 2014/10/23/accepted PY - 2014/10/31/entrez PY - 2014/10/31/pubmed PY - 2016/4/26/medline KW - cadmium KW - grain food KW - immobilisation KW - silicon nutrition KW - soil pH KW - wheat SP - 2467 EP - 72 JF - Journal of the science of food and agriculture JO - J Sci Food Agric VL - 95 IS - 12 N2 - BACKGROUND: Cadmium concentration in food grains could be minimised through application of beneficial plant nutrients such as silicon. Therefore, the impact of silicon application on immobilisation of Cd in soil and its concentration in low and high shoot-Cd (LSCd and HSCd, respectively) cultivars of wheat were evaluated in a pot experiment. Selected LSCd cultivars (Iqbal-2000 and Lasani-2008) and HSCd cultivars (Inqlab-91 and Sehar-2006) were grown on artificially Cd contaminated soil at 10 mg Cd kg(-1) . Three levels of Si (50, 100 and 150 mg kg(-1) soil), applied as calcium silicate (CaSiO3), were tested. RESULTS: None of the wheat cultivars showed any symptoms of toxicity or growth retardation against applied Cd stress. Silicon applied to Cd-treated plants did not improve root and shoot dry matter; however, it increased grain yield significantly at the highest rate of application (150 mg kg(-1) soil). Similarly, Si application at 150 mg kg(-1) decreased plant available soil Cd without affecting soil pH. Silicon application not only caused a linear decrease in Cd contents of shoots and grains but also decreased its translocation from roots to shoots and grains. Decrease in shoot Cd concentration was higher in HSCd than LSCd cultivars whereas the reverse was true for Cd concentration in grains. CONCLUSION: Si addition decreased Cd concentration in wheat cultivars by causing a decrease in both plant-available soil Cd and its translocation from roots to shoots. Application of Si at 150 mg kg(-1) proved to be an effective level of Si that could significantly lower Cd concentration in wheat grains. SN - 1097-0010 UR - https://www.unboundmedicine.com/medline/citation/25355244/Suppression_of_cadmium_concentration_in_wheat_grains_by_silicon_is_related_to_its_application_rate_and_cadmium_accumulating_abilities_of_cultivars_ L2 - https://doi.org/10.1002/jsfa.6976 DB - PRIME DP - Unbound Medicine ER -