Iron plaque formation and its effect on arsenic uptake by different genotypes of paddy rice

Lee, Chia-Hsing; Hsieh, Yi-Cheng; Lin, Tzu-Huei; Lee, Dar‐Yuan

doi:10.1007/s11104-012-1308-2

Cited by 95 publications

(33 citation statements)

References 35 publications

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“…Rates of oxygen loss influence iron plaque formation 115 , and vary between rice cultivars 116, 117 . Studies conducted over the last forty years are inconsistent on whether iron plaque prevents or enhances arsenic uptake by plants 111 , and the hypothesis that arsenic influences the quality and amount of the iron plaque 113 . Profound differences in mineral composition and quantity of laboratory-created iron plaques has been demonstrated experimentally 111 , which may have contributed to these inconsistencies.…”

Section: Rhizosphere Processesmentioning

confidence: 99%

Understanding arsenic dynamics in agronomic systems to predict and prevent uptake by crop plants

Punshon

Jackson

Meharg

et al. 2017

Science of The Total Environment

209

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This review is on arsenic in agronomic systems, and covers processes that influence the entry of arsenic into the human food supply. The scope is from sources of arsenic (natural and anthropogenic) in soils, biogeochemical and rhizosphere processes that control arsenic speciation and availability, through to mechanisms of uptake by crop plants and potential mitigation strategies. This review makes a case for taking steps to prevent or limit crop uptake of arsenic, wherever possible, and to work toward a long-term solution to the presence of arsenic in agronomic systems. The past two decades have seen important advances in our understanding of how biogeochemical and physiological processes influence human exposure to soil arsenic, and this must now prompt an informed reconsideration and unification of regulations to protect the quality of agricultural and residential soils.

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Section: Rhizosphere Processesmentioning

confidence: 99%

Understanding arsenic dynamics in agronomic systems to predict and prevent uptake by crop plants

Punshon

Jackson

Meharg

et al. 2017

Science of The Total Environment

209

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“…Fe-plaque plays an important role in reducing arsenic uptake in rice because it has high affinity towards As V and is able to sequester the arsenic, which ultimately leads to decrease the translocation of arsenic from roots to shoots [96]; concentration of Fe oxides also increases in the rhizosphere that consequently decrease arsenic uptake in rice plants [130,131].…”

Section: Role Of Fementioning

confidence: 99%

Arsenic Accumulation in Rice and Probable Mitigation Approaches: A Review

Mitra¹,

et al. 2017

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According to recent reports, millions of people across the globe are suffering from arsenic (As) toxicity. Arsenic is present in different oxidative states in the environment and enters in the food chain through soil and water. In the agricultural field, irrigation with arsenic contaminated water, that is, having a higher level of arsenic contamination on the top soil, which may affects the quality of crop production. The major crop like rice (Oryza sativa L.) requires a considerable amount of water to complete its lifecycle. Rice plants potentially accumulate arsenic, particularly inorganic arsenic (iAs) from the field, in different body parts including grains. Different transporters have been reported in assisting the accumulation of arsenic in plant cells; for example, arsenate (As V ) is absorbed with the help of phosphate transporters, and arsenite (As III ) through nodulin 26-like intrinsic protein (NIP) by the silicon transport pathway and plasma membrane intrinsic protein aquaporins. Researchers and practitioners are trying their level best to mitigate the problem of As contamination in rice. However, the solution strategies vary considerably with various factors, such as cultural practices, soil, water, and environmental/economic conditions, etc. The contemporary work on rice to explain arsenic uptake, transport, and metabolism processes at rhizosphere, may help to formulate better plans. Common agronomical practices like rain water harvesting for crop irrigation, use of natural components that help in arsenic methylation, and biotechnological approaches may explore how to reduce arsenic uptake by food crops. This review will encompass the research advances and practical agronomic strategies on arsenic contamination in rice crop.

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“…Lee et al (2013) compared iron plaque formation of 28 rice cultivars; japonica rice TK16 and indica rice TCS10, representing high and low iron plaque formation capability, respectively, were selected from these 28 cultivars. Japonica rice has a genetic ability to form iron plaques that is superior to that of indica rice, and compared to indica rice, japonica rice appears to have lower accumulations of Pb (Liu et al 2011).…”

Section: Plant Materials and The Pot Experimentsmentioning

confidence: 99%

Combined effect of rice genotypes and soil characteristics on iron plaque formation related to Pb uptake by rice in paddy soils

Yang

Syu

et al. 2015

J Soils Sediments

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Purpose The formation of iron plaques and their ability to sequester heavy metals are influenced by soil properties and rice genotype. Lead accumulation in paddy soil is increasing, but in order to assess soil suitability for rice cultivation, a better understanding of the effects of iron plaques on Pb uptake by paddy rice is needed. Materials and methods Two rice cultivars, Taikang 16 (TK16) and Taichung Sen 10 (TCS10), were grown in pots to assess lead (Pb) uptake. Three paddy soils (C, D, and N) sampled from potentially contaminated sites in central Taiwan were used for the experiment, with additional Pb spiking (0, 150, and 300 mg kg −1 ). Results and discussion Pb uptake by rice plants was positively correlated with soil Pb availability. However, Pb uptake by rice plants in soils D and N, even with higher Pb availability, was much less than in soil C. We attribute this to the large amount of iron plaques coating the root surfaces of plants in soils D and N. Moreover, TCS10, which is an indica rice sensitive to metal stress, took up more Pb than TK16, which is a japonica rice. Iron plaque formation on the roots of TK16 was superior to that on the roots of TCS10.Conclusions Iron plaque formation that inhibits Pb uptake appears to be driven primarily by the soil properties and secondarily by the rice genotype. Nevertheless, the capacity of iron plaques to sequester Pb is limited by a high level of Pb contamination in the soil.

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Iron plaque formation and its effect on arsenic uptake by different genotypes of paddy rice

Cited by 95 publications

References 35 publications

Understanding arsenic dynamics in agronomic systems to predict and prevent uptake by crop plants

Understanding arsenic dynamics in agronomic systems to predict and prevent uptake by crop plants

Arsenic Accumulation in Rice and Probable Mitigation Approaches: A Review

Combined effect of rice genotypes and soil characteristics on iron plaque formation related to Pb uptake by rice in paddy soils

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