Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars
Abstract Background Rice is a major dietary source of cadmium (Cd) and arsenic (As) for populations consuming rice as the staple food. Excessive Cd and As accumulation in rice grain is of great concern worldwide, especially in South China where soil contamination with heavy metals and metalloids is...
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doaj-2bdedaaaec5248359ee06d67666516e02020-11-25T00:20:52ZengSpringerOpenRice1939-84251939-84332017-03-0110111310.1186/s12284-017-0149-2Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice CultivarsGuilan Duan0Guosheng Shao1Zhong Tang2Hongping Chen3Boxun Wang4Zhu Tang5Yuping Yang6Yuechuan Liu7Fang-Jie Zhao8State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of SciencesChinese National Rice Research InstituteState Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural UniversityState Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural UniversityState Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of SciencesState Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural UniversityState Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of SciencesYouxian Agricultural Bureau of Hunan ProvinceState Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural UniversityAbstract Background Rice is a major dietary source of cadmium (Cd) and arsenic (As) for populations consuming rice as the staple food. Excessive Cd and As accumulation in rice grain is of great concern worldwide, especially in South China where soil contamination with heavy metals and metalloids is widespread. It is important to reduce Cd and As accumulation in rice grain through selection and breeding of cultivars accumulating low levels of Cd or As. Results To assess the genetic and environmental variations in the concentrations of Cd and As in rice grains, 471 locally adapted high-yielding rice cultivars were grown at three moderately contaminated sites in South China for two years. Cadmium and As concentrations in brown rice varied by 10 – 32 and 2.5 – 4 fold, respectively. Genotype (G), environment (E) and G x E interactions were highly significant factors explaining the variations. Brown rice Cd concentration was found to correlate positively with the heading date among different cultivars, whereas As concentration and heading date correlated negatively. There was a significant and negative correlation between grain Cd and As concentrations. Conclusions Eight and 6 rice cultivars were identified as stable low accumulators of Cd and As, respectively, based on the multiple site and season trials. These cultivars are likely to be compliant with the grain Cd or As limits of the Chinese Food Safety Standards when grown in moderately contaminated paddy soils in South China.http://link.springer.com/article/10.1186/s12284-017-0149-2ArsenicCadmiumFood SafetyGenotypeRice |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Guilan Duan Guosheng Shao Zhong Tang Hongping Chen Boxun Wang Zhu Tang Yuping Yang Yuechuan Liu Fang-Jie Zhao |
spellingShingle |
Guilan Duan Guosheng Shao Zhong Tang Hongping Chen Boxun Wang Zhu Tang Yuping Yang Yuechuan Liu Fang-Jie Zhao Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars Rice Arsenic Cadmium Food Safety Genotype Rice |
author_facet |
Guilan Duan Guosheng Shao Zhong Tang Hongping Chen Boxun Wang Zhu Tang Yuping Yang Yuechuan Liu Fang-Jie Zhao |
author_sort |
Guilan Duan |
title |
Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars |
title_short |
Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars |
title_full |
Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars |
title_fullStr |
Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars |
title_full_unstemmed |
Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars |
title_sort |
genotypic and environmental variations in grain cadmium and arsenic concentrations among a panel of high yielding rice cultivars |
publisher |
SpringerOpen |
series |
Rice |
issn |
1939-8425 1939-8433 |
publishDate |
2017-03-01 |
description |
Abstract Background Rice is a major dietary source of cadmium (Cd) and arsenic (As) for populations consuming rice as the staple food. Excessive Cd and As accumulation in rice grain is of great concern worldwide, especially in South China where soil contamination with heavy metals and metalloids is widespread. It is important to reduce Cd and As accumulation in rice grain through selection and breeding of cultivars accumulating low levels of Cd or As. Results To assess the genetic and environmental variations in the concentrations of Cd and As in rice grains, 471 locally adapted high-yielding rice cultivars were grown at three moderately contaminated sites in South China for two years. Cadmium and As concentrations in brown rice varied by 10 – 32 and 2.5 – 4 fold, respectively. Genotype (G), environment (E) and G x E interactions were highly significant factors explaining the variations. Brown rice Cd concentration was found to correlate positively with the heading date among different cultivars, whereas As concentration and heading date correlated negatively. There was a significant and negative correlation between grain Cd and As concentrations. Conclusions Eight and 6 rice cultivars were identified as stable low accumulators of Cd and As, respectively, based on the multiple site and season trials. These cultivars are likely to be compliant with the grain Cd or As limits of the Chinese Food Safety Standards when grown in moderately contaminated paddy soils in South China. |
topic |
Arsenic Cadmium Food Safety Genotype Rice |
url |
http://link.springer.com/article/10.1186/s12284-017-0149-2 |
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