Arsenic Uptake and Accumulation in Rice (Oryza sativa L.) at Different Growth Stages following Soil Incorporation of Roxarsone and Arsanilic Acid
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Experiments were conducted with rice (Oryza sativa L.) by adding 0, 10, 20, 30, 40, 50 mg kg-1 of arsenic (As) to soil (with roxarsone and arsanilic acid, presented as As concentrations) at a field with an isolation chamber. The aims were to evaluate the effects of As- (roxarsone or arsanilic acid) contaminated soil on rice agronomic parameters and uptake of As in different plant parts of the rice plant. The results showed that As (roxarsone or arsanilic acid) could significantly reduce plant height, effective tiller number, straw weight and grain yield (P < 0.01). As concentrations in different parts of the plant varied with the growth stages, and behaved similarly. At the maturing stage, the level in different parts peaked in all treatments, with tissue As concentrations showing the pattern: root > leaf > stem > husk > grain. In addition, at the mature stage, the As concentrations in different parts of the rice plant increased with increasing concentrations of roxarsone and arsanilic acid. The highest concentration of As found in grain was 0.82 mg kg-1, which did not exceed the statutory permissible limit for rice grain (1.0 mg As kg-1), and in the leaf and stem it was approximately 6.0 mg kg-1, which was significantly higher than that in the controls. The results showed that rice could accumulate As from contaminated soil (roxarsone or arsanilic acid), which may be transferred to human beings via the food chain.
KeywordsArsenic Arsanilic acid and roxarsone Rice Soil
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Project support was provided by National Natural Science Foundation of China (grant No. 30130140). The authors are very grateful to Prof. F.A. Liu, X.Q. Zhu and Z.Y. Su for improving the draft manuscript.
- Alam ZM, Rahman MM (2003) Accumilation of arsenic in rice plant from arsenic contaminated irrigation water and effect on nutrient content. In: Alam MZ, Rahman MM (eds) Fate of arsenic in the environment. ITN Centre, The Bangladesh University of Engineering and Technology and the United Nations University, Bangladesh, pp 131–135Google Scholar
- Day PR (1965) Method of soil analysis, Part I, first edn. Agron. Monogr. ASA, Madison, WI, pp 552–562Google Scholar
- Fran SR, Horton D, Burdette L (1988) Influence of MSMA on straighthead, arsenic uptake and growth response in rice (Oryza sativa L.). Arkansas AES Rep Ser 302:1–12Google Scholar
- Merharg AA, Rahman M (2003) Arsenic contamination of Bangladesh paddy field soils: implication for rice contribution to arsenic consumption. Sci Total Environ 37:229–234Google Scholar
- Milam MR, Marin A, Sedberry JE, Bligh DP, Sheppard R (1988) Effect of water management, arsenic, and zinc on selected agronomic traits and rice grain yield. Northeast Research Station and Macon Ridge Research Station, Baton Rouge, USA. In Annual Progress Report, pp 105–108Google Scholar
- Moore PA, Daniel TC, Gilmour JT (1998) Decreasing metal run off from poultry litter with aluminum sulfate. J Environ Qual 27:92–99Google Scholar
- National Food Authority (1993) Australian Food Standard Code: March, 1993. Australian Govt. Pub. Service, CanberraGoogle Scholar
- Nelson DW, Sommers LE (1982) Methods of soil analysis, part 2: chemical and microbiological properties. American Society of Agronomy, Madison, WI, pp 539–579Google Scholar
- Rossman TG. (2003) Mechanism of arsenic carcinogenesis an integrated approach. Mut Res 533:37–65Google Scholar
- Tsutsumi M (1980) Intensification of arsenic toxicity to paddy rice by hydrogen sulphide and ferrous iron I. Induction of bronzing and iron accumulation in rice by arsenic. Soil Sci Plant Nutr 26:561–569Google Scholar