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Cadmium accumulation in different rice cultivars and screening for pollution-safe cultivars of rice.
Sci Total Environ. 2006 Nov 01; 370(2-3):302-9.ST

Abstract

Large areas of contaminated land are being used for agricultural production in some countries due to the high demand for food. To minimize the influx of pollutants to the human food chain through consumption of agricultural products, we propose the concept of pollution-safe cultivars (PSCs), i.e. cultivars whose edible parts accumulate a specific pollutant at a level low enough for safe consumption, even when grown in contaminated soil. We tested the feasibility of the PSC concept by growing 43 cultivars of paddy rice (Oryza sativa L., including 20 normal and 23 hybrid cultivars) under a high (75.69-77.55 mg kg(-1)) and a low (1.75-1.85 mg kg(-1)) cadmium (Cd) exposure. These pot experiments took place in the spring and summer of 2004. At the low level of Cd exposure, 30 out of the 43 tested cultivars were found to be Cd-PSCs. Grain Cd concentrations were highly correlated (p<0.01) between the two experiments, suggesting that Cd accumulation in rice grain is genotype-dependent and that the selection of PSCs is possible, at least at a certain level of soil contamination. No Cd-PSCs were found under the high level of Cd exposure. Yield was enhanced in some cultivars and depressed in others in response to elevated soil Cd, indicating that farmers cannot rely on yield depression as an indicator of toxicity of the grains. It is therefore important and feasible to screen for PSCs and to establish PSC breeding programs to effectively and efficiently reduce the risk of human exposure to soil pollutants, such as Cd, through crop consumption.

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Authors+Show Affiliations

Yu H
State Key Laboratory for Biocontrol, also School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
Wang J
No affiliation info available
Fang W
No affiliation info available
Yuan J
No affiliation info available
Yang Z
No affiliation info available

MeSH

CadmiumEdible GrainEnvironmental MonitoringEnvironmental PollutionOryzaSeasonsSoil Pollutants

Pub Type(s)

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

Language

eng

PubMed ID

16870236

Citation

Yu, Hui, et al. "Cadmium Accumulation in Different Rice Cultivars and Screening for Pollution-safe Cultivars of Rice." The Science of the Total Environment, vol. 370, no. 2-3, 2006, pp. 302-9.
Yu H, Wang J, Fang W, et al. Cadmium accumulation in different rice cultivars and screening for pollution-safe cultivars of rice. Sci Total Environ. 2006;370(2-3):302-9.
Yu, H., Wang, J., Fang, W., Yuan, J., & Yang, Z. (2006). Cadmium accumulation in different rice cultivars and screening for pollution-safe cultivars of rice. The Science of the Total Environment, 370(2-3), 302-9.
Yu H, et al. Cadmium Accumulation in Different Rice Cultivars and Screening for Pollution-safe Cultivars of Rice. Sci Total Environ. 2006 Nov 1;370(2-3):302-9. PubMed PMID: 16870236.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium accumulation in different rice cultivars and screening for pollution-safe cultivars of rice. AU - Yu,Hui, AU - Wang,Junli, AU - Fang,Wei, AU - Yuan,Jiangang, AU - Yang,Zhongyi, Y1 - 2006/07/25/ PY - 2006/04/03/received PY - 2006/06/03/revised PY - 2006/06/16/accepted PY - 2006/7/28/pubmed PY - 2007/1/31/medline PY - 2006/7/28/entrez SP - 302 EP - 9 JF - The Science of the total environment JO - Sci Total Environ VL - 370 IS - 2-3 N2 - Large areas of contaminated land are being used for agricultural production in some countries due to the high demand for food. To minimize the influx of pollutants to the human food chain through consumption of agricultural products, we propose the concept of pollution-safe cultivars (PSCs), i.e. cultivars whose edible parts accumulate a specific pollutant at a level low enough for safe consumption, even when grown in contaminated soil. We tested the feasibility of the PSC concept by growing 43 cultivars of paddy rice (Oryza sativa L., including 20 normal and 23 hybrid cultivars) under a high (75.69-77.55 mg kg(-1)) and a low (1.75-1.85 mg kg(-1)) cadmium (Cd) exposure. These pot experiments took place in the spring and summer of 2004. At the low level of Cd exposure, 30 out of the 43 tested cultivars were found to be Cd-PSCs. Grain Cd concentrations were highly correlated (p<0.01) between the two experiments, suggesting that Cd accumulation in rice grain is genotype-dependent and that the selection of PSCs is possible, at least at a certain level of soil contamination. No Cd-PSCs were found under the high level of Cd exposure. Yield was enhanced in some cultivars and depressed in others in response to elevated soil Cd, indicating that farmers cannot rely on yield depression as an indicator of toxicity of the grains. It is therefore important and feasible to screen for PSCs and to establish PSC breeding programs to effectively and efficiently reduce the risk of human exposure to soil pollutants, such as Cd, through crop consumption. SN - 0048-9697 UR - https://www.unboundmedicine.com/medline/citation/16870236/Cadmium_accumulation_in_different_rice_cultivars_and_screening_for_pollution_safe_cultivars_of_rice_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(06)00452-9 DB - PRIME DP - Unbound Medicine ER -