Potential for the alleviation of arsenic toxicity in paddy rice using amorphous iron-(hydr)oxide amendments

Ultra, Venecio; Nakayama, Atsushi; Tanaka, Sota; Kang, Youngnam; Sakurai, Katsutoshi; Iwasaki, Katsurô

doi:10.1111/j.1747-0765.2008.00341.x

Cited by 42 publications

(17 citation statements)

References 33 publications

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“…The extent of formation of Fe-oxide precipitates on rice roots and in rhizosphere soil may also be an important factor as this leads to adsorption of As from soil solution Liu et al 2004Liu et al , 2006 and reduces As uptake by rice (Mei et al 2009;Ultra et al 2009). Because rice varieties differ in their release of oxygen to the rhizosphere (Mei et al 2009), there could be a genetic interaction with Fe availability across sites that contributes to GEI.…”

Section: Correlation Of Grain-as With Soil Variablesmentioning

confidence: 99%

Genotype and environment effects on rice (Oryza sativa L.) grain arsenic concentration in Bangladesh

et al. 2010

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Genetic analysis of 38 rice varieties released by the Bangladesh Rice Research Institute (BRRI) identified 34 as indica, 2 as admixed between indica and aus, and 4 as belonging to the aromatic/Group V subpopulation. Indica varieties developed for the two major rice-growing seasons, the wet monsoon (aman) and the dry winter (boro), were not genetically differentiated. The Additive Main Effect and Multiplicative Interaction (AMMI) model was used to assess the effect of genotype (G), environment (E) and Plant Soil (2011) 338:367-382 genotype-environment interaction (GEI) on grain arsenic (As) concentration when these rice varieties were grown at ten BRRI research stations located across diverse agro-ecological zones in Bangladesh. G, E and GEI, significantly influenced grain As concentration in both seasons. Overall, E accounted for 69%-80%, G 9%-10% and GEI 10%-21% of the observed variability in grain As. One site, Satkhira had the highest mean grain As concentration and the largest interaction principle component analysis (IPCA) scores in both seasons, indicating maximum interaction with genotypes. Site effects were more pronounced in the boro than in the aman season. The soil level of poorly crystalline Fe-oxide (AOFe), the ratio of AOFe to associated As, soil phosphate extractable As and soil pH were important sub-components of E controlling rice grain As concentration. Irrespective of environment, the mean grain As concentration was significantly higher in the boro (0.290 mg As kg −1 ) than in the aman (0.154 mg As kg −1 ) season (p<0.0001), though the reasons for this are unclear. Based on mean grain As concentration and stability across environments, the variety BR3 is currently the best choice for the boro season, while BR 23 and BRRI dhan 38 are the best choices for the aman season. Popular varieties BR 11 (aman) and BRRI dhan 28 and 29 (boro) had grain As concentrations close to the mean value and were fairly stable across environments, while highyielding, short-duration aman season varieties (BRRI dhan 32, 33 and 39) developed for intensified cropping had relatively high grain As concentrations. Results suggest that genetic approaches to reducing As in rice grain will require the introduction of novel genetic variation and must be accompanied by appropriate management strategies to reduce As availability and uptake by rice.

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Section: Correlation Of Grain-as With Soil Variablesmentioning

confidence: 99%

Genotype and environment effects on rice (Oryza sativa L.) grain arsenic concentration in Bangladesh

et al. 2010

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“…Iron plaque is generally considered to be a buffer or barrier to As uptake, because of the plaque's high affinity for As (Tripathi et al 2014). Ultra et al (2009) reported that the application of hydrous ferric oxide increased Fe plaque on roots, resulting in a decrease in As uptake by rice plants. A similar phenomenon might also be the cause in the present study, due to the high content of Fe in the WTR.…”

Section: Arsenic In Rice Tissuesmentioning

confidence: 99%

“…Some trials using Fe-rich wastes or by-products, such as water-treatment residue (WTR) and steel shot, to stabilize As in polluted soils have been reported (Lidelöw et al 2007;Nagar et al 2013). However, only a few studies have focused on As stabilization in flooded soils or attenuation of As in rice by using Fe oxides or Fe-rich materials (Xie and Huang 1998;Ultra et al 2009). A precipitate of polysilicate-iron (PSI), which is the major component of WTR from some water purification plants in Japan, significantly decreased dissolved As during longterm flooded incubation (Suda et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Use of water-treatment residue containing polysilicate-iron to stabilize arsenic in flooded soils and attenuate arsenic uptake by rice (Oryza sativaL.) plants

Suda

Baba

Akahane

et al. 2016

Soil Science and Plant Nutrition

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A pot experiment was conducted to examine how soil amendment with water-treatment residue (WTR) containing polysilicate-iron affected dissolved arsenic (As) in flooded soils and As uptake by rice plants (Oryza sativa L.). The WTR was applied at a rate of 0 (control), 5, 10 or 20 t ha −1. Simple linear regression analyses showed significant negative relationships between the concentrations of dissolved As in soil solution and WTR application rates at all sampling times, probably due to adsorption of As onto ferrihydrite in the WTR. Compared to As concentrations in rice plants grown on control soil, the concentrations in plants grown on WTR-treated soils decreased by 20.1-41.6% in straw (stems and leaves), 19.8-31.7% in husk and 18.6-21.0% in grain. The regression analyses demonstrated that the concentration and content of As in rice are negatively correlated with WTR application rate. Total As content was 16.5-32.0% lower in rice shoots grown on WTR-treated soils than on control soil. The percentage of each As species in grain decreased in the following order: As(III) » dimethylarsinic acid » As(V). The application of WTR did not change the As speciation in grain. Silicon contents in shoot significantly increased with application of WTR, indicating the potency of WTR as a silicate fertilizer. Taken together, our results indicate that WTR containing polysilicate-iron promises to be a practical amendment for stabilizing As and attenuating As uptake by rice plants.

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“…The lateral root junction was shown to be hotspots of As-3 uptake [32]. Ultra et al [28] showed that the addition of 0.1 wt % amorphous Fe (hydr)oxide resulted in the increased formation of Fe plaque, which reduced the As uptake by rice. Our results showed that the application of the Fe amendment enhanced the deposition of Fe (hydr)oxide; however, deposition was not preferentially increased around the roots.…”

Section: Deposition Of Fe Plaques Around Rootsmentioning

confidence: 99%

“…When larger amounts of Fe 2+ are supplied from the soil by reductive dissolution, larger amounts of Fe plaque are formed around roots. Ultra et al [28] showed that the addition of 0.1 wt % amorphous Fe (hydr)oxide results in an increase in Fe plaque formation and thereby a reduction in As uptake by rice. The addition of Fe-bearing materials to soil increases the source of Fe 2+ dissolved in the soil solution, which possibly influences Fe plaque formation.…”

Section: Introductionmentioning

confidence: 99%

Effects of Iron Amendments on the Speciation of Arsenic in the Rice Rhizosphere after Drainage

Yamaguchi

Ohkura

Hikono

et al. 2017

Soils

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Abstract:Applications of iron-(Fe-) bearing materials represent an effective countermeasure for decreasing the dissolution of arsenic (As) in soil under anaerobic conditions. In this study, we investigated the effects of Fe amendments (ferrihydrite-based and zero-valent iron-(ZVI-) based materials) on the speciation of As in rice cultivated soils and root-attached materials including Fe plaque when the soil shifts from anaerobic to aerobic conditions. Rice (Oryza sativa L.) was cultivated in pots filled with soil under continuous flooding conditions, and root distribution in the soil was restricted inside a cylinder made by nylon mesh. Soil and root samples were collected after drainage at different growth stages of the rice plants, which are represented by intermittent drainage and drainage at harvest. The speciation of As was determined by As K-edge X-ray absorption near edge structure (XANES) spectroscopy. The proportion of arsenite did not differ between the bulk soil and root-attached materials including Fe plaque, whereas a larger proportion of dimethylarsinic acid was found in the root-attached materials regardless of the application of Fe amendments. Observation of soil thin-sections showed that the application of Fe amendments caused an increase in Fe (hydr)oxide deposition around the roots as well as on the soil particles. In addition to Fe (hydr)oxide, sulfide was found to be associated with As under anaerobic conditions, notably for the ZVI-amended soil at the time of intermittent drainage. The concentration of As in the soil solution and As uptake by rice grains decreased, while As speciation near the roots was not influenced by the application of Fe amendments. In conclusion, Fe amendments mitigated As dissolution in the soil solution by providing a sorption site for As in bulk soil without altering As speciation near the roots.

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Potential for the alleviation of arsenic toxicity in paddy rice using amorphous iron-(hydr)oxide amendments

Cited by 42 publications

References 33 publications

Genotype and environment effects on rice (Oryza sativa L.) grain arsenic concentration in Bangladesh

Genotype and environment effects on rice (Oryza sativa L.) grain arsenic concentration in Bangladesh

Use of water-treatment residue containing polysilicate-iron to stabilize arsenic in flooded soils and attenuate arsenic uptake by rice (Oryza sativaL.) plants

Effects of Iron Amendments on the Speciation of Arsenic in the Rice Rhizosphere after Drainage

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