Arsenic and cadmium accumulation in rice and mitigation strategies

  title={Arsenic and cadmium accumulation in rice and mitigation strategies},
  author={Fang-jie Zhao and Peng Wang},
  journal={Plant and Soil},
Background Arsenic (As) and cadmium (Cd) are two toxic elements that have a relatively high risk of transfer from paddy soil to rice grain. Rice is a major dietary source of these two elements for populations consuming rice as a staple food. Reducing their accumulation in rice grain is important for food safety and human health. Scope We review recent progress in understanding the biogeochemical processes controlling As and Cd bioavailability in paddy soil, the mechanisms of their uptake… 

Arsenic and cadmium bioavailability to rice (Oryza sativa L.) plant in paddy soil: Influence of sulfate application.

Arsenic (As) and cadmium (Cd) accumulate easily in rice grains that pose a non-negligible threat to human health worldwide. Sulfur fertilizer has been shown to affect the mobilization of As and Cd in

Strategies to manage the risk of heavy metal(loid) contamination in agricultural soils

  • F. Zhao
  • Environmental Science
    Frontiers of Agricultural Science and Engineering
  • 2020
Soil contamination with heavy metal(loid)s threatens soil ecological functions, water quality and food safety; the latter is the focus of this review. Cadmium (Cd) and arsenic (As) are the toxic

Biogeochemical Control on the Mobilization of Cd in Soil

Cadmium (Cd) is a toxic element that can easily enter the human body through the food chain. Rice grain is the main contributor to dietary Cd intake, especially for those populations who consume rice

Response of Iron and Cadmium on Yield and Yield Components of Rice and Translocation in Grain: Health Risk Estimation

Rice consumption is a major dietary source of Cd and poses a potential threat to human health. The aims of this study were to examine the influence of Fe and Cd application on yield and yield

Inorganic arsenic toxicity and alleviation strategies in rice.

Effects of foliar applications of Brassinolide and Selenium on the accumulation of Arsenic and Cadmium in rice grains and an assessment of their health risk.

Arsenic and cadmium pose a potential health risk to human beings via rice grain consumption. In the current study, a pot experiment was conducted to evaluate the effect of Br (5 mM and 20 mM) and Se

Chemical speciation and distribution of cadmium in rice grain and implications for bioavailability to humans.

It is found that the variation in the distribution pattern of Cd in the rice grain was due to a temporal change in the supply ofCd from the soil porewater during grain filling, which has important implications for Cd bioavailability in human diets.

Exploring Key Soil Parameters Relevant to Arsenic and Cadmium Accumulation in Rice Grain in Southern China

Paddy soils in some areas of southern China are contaminated by arsenic (As) and cadmium (Cd), threatening human health via the consumption of As- and/or Cd-tainted rice. To date, a quantitative



Genotypic and Environmental Variations in Grain Cadmium and Arsenic Concentrations Among a Panel of High Yielding Rice Cultivars

Eight and 6 rice cultivars were identified as stable low accumulators of Cd and As, respectively, based on the multiple site and season trials, which suggest 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.

Mitigation of arsenic accumulation in rice with water management and silicon fertilization.

It is demonstrated that water management Si fertilization, and selection of rice cultivars are effective measures that can be used to reduce As accumulation in rice.

Variation in arsenic speciation and concentration in paddy rice related to dietary exposure.

Pot experiments show that the proportions of DMAV in the grain are significantly dependent on rice cultivar (p = 0.026) and that plant nutrient status is effected by arsenic exposure.

Occurrence and partitioning of cadmium, arsenic and lead in mine impacted paddy rice: Hunan, China.

It was demonstrated that metal(loid) tainted rice was entering food supply chains intended for direct human consumption in parts of Hunan province above levels suitable for human consumption.

Arsenic as a food chain contaminant: mechanisms of plant uptake and metabolism and mitigation strategies.

A range of mitigation methods, from agronomic measures and plant breeding to genetic modification, may be employed to reduce As uptake by food crops.

Effect of water management on cadmium and arsenic accumulation by rice (Oryza sativa L.) with different metal accumulation capacities

PurposeWater management affects the bioavailability of cadmium (Cd) and arsenic (As) in the soil and hence their accumulation in rice grains and grain yields. However, Cd and As show opposite

Arsenic in soil and irrigation water affects arsenic uptake by rice: complementary insights from field and pot studies.

Investigation of the As contents of rice straw and grain over three consecutive harvest seasons in a paddy field in Munshiganj, Bangladesh, which exhibits a documented gradient in soil As caused by annual irrigation with As-rich groundwater since the early 1990s, suggested that both soil As accumulated in previous years and As freshly introduced with irrigation water influence As uptake during rice growth.

How Does Contamination of Rice Soils with Cd and Zn Cause High Incidence of Human Cd Disease in Subsistence Rice Farmers

  • R. Chaney
  • Materials Science
    Current Pollution Reports
  • 2015
Rice (Oryza sativa L.) grown on Zn mine waste contaminated soils has caused unequivocal Cd effects on kidney and occasional bone disease (itai-itai) in subsistence rice farmers, but high intake of Cd