Arsenic accumulation in the roots of Helianthus annuus and Zea mays by irrigation with arsenic-rich groundwater: Insights from synchrotron X-ray fluorescence imaging

Neidhardt, Harald; Kramar, U.; Tang, Xiaohui; Guo, Huaming; Norra, Stefan

doi:10.1016/j.chemer.2015.04.001

Cited by 34 publications

(19 citation statements)

References 70 publications

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“…Arsenic uptake by plant species relies on its total concentration and, importantly, on the speciation of As in soil—which is thought to be dependent upon exchangeable (bioavailable) As concentration in soil [ 17 , 18 , 28 ]. In plants, As mainly enters as an inorganic form, As(III) or As(V) [ 29 ] via transporter proteins that is likely governed by As concentration gradient between growth media and plant cells. To our understanding, information about specific transporters for As uptake by plants is lacking [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Arsenic Uptake, Toxicity, Detoxification, and Speciation in Plants: Physiological, Biochemical, and Molecular Aspects

Abbas

Murtaza

Bibi

et al. 2018

IJERPH

629

256

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Environmental contamination with arsenic (As) is a global environmental, agricultural and health issue due to the highly toxic and carcinogenic nature of As. Exposure of plants to As, even at very low concentration, can cause many morphological, physiological, and biochemical changes. The recent research on As in the soil-plant system indicates that As toxicity to plants varies with its speciation in plants (e.g., arsenite, As(III); arsenate, As(V)), with the type of plant species, and with other soil factors controlling As accumulation in plants. Various plant species have different mechanisms of As(III) or As(V) uptake, toxicity, and detoxification. This review briefly describes the sources and global extent of As contamination and As speciation in soil. We discuss different mechanisms responsible for As(III) and As(V) uptake, toxicity, and detoxification in plants, at physiological, biochemical, and molecular levels. This review highlights the importance of the As-induced generation of reactive oxygen species (ROS), as well as their damaging impacts on plants at biochemical, genetic, and molecular levels. The role of different enzymatic (superoxide dismutase, catalase, glutathione reductase, and ascorbate peroxidase) and non-enzymatic (salicylic acid, proline, phytochelatins, glutathione, nitric oxide, and phosphorous) substances under As(III/V) stress have been delineated via conceptual models showing As translocation and toxicity pathways in plant species. Significantly, this review addresses the current, albeit partially understood, emerging aspects on (i) As-induced physiological, biochemical, and genotoxic mechanisms and responses in plants and (ii) the roles of different molecules in modulation of As-induced toxicities in plants. We also provide insight on some important research gaps that need to be filled to advance our scientific understanding in this area of research on As in soil-plant systems.

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Section: Introductionmentioning

confidence: 99%

Arsenic Uptake, Toxicity, Detoxification, and Speciation in Plants: Physiological, Biochemical, and Molecular Aspects

Abbas

Murtaza

Bibi

et al. 2018

IJERPH

629

256

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“…Heavy metal (oid) bioaccumulation and distribution to the aerial parts of food plants depend on plant transport efficiency, binding to plant extracellular materials, root system responses (Meng et al, ), dose of a metal, and exposure duration (Hattab et al, ). In metal (oid) contaminated soils, iron oxide provides an effective barrier to these metals through Fe plaque formation on roots (Neidhardt, Kramar, Tang, Guo, & Norra, ). Many other factors including pH; redox condition; soil organic matter (Gelaw, Singh, & Lal, ); soil texture; oxides of Al, Fe, and Mn; concentrations of P, S, and As in soil; land use pattern; and growth seasons can affect and control As uptake and its transfer into aboveground parts of the plants (Waqas et al, ).…”

Section: Introductionmentioning

confidence: 99%

Arsenic interaction and bioaccumulation in food crops grown on degraded soil: Effect on plant nutritional components and other dietary qualities

Khan

et al. 2019

Land Degrad Dev

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Arsenic (As), being a toxic metalloid, is widely found in degraded land and severely affects the health of plants and human beings. Pot experiments were conducted to assess the effects of As on plant nutritional values (macronutrients and micronutrients). Three vegetables (potato, tomato, and lettuce), on the basis of taxonomic differences, were selected and grown on As degraded soils at four different concentrations (0, 0.5, 1.0, and 1.5 mg kg−1); additionally, the effect of Cd and Pb on the As uptake by plants was studied. The edible parts were analysed for As, Cd, Pb, and essential macronutrients (vitamin C, protein, N, P, and K) and micronutrients (Ca, Mg, Fe, and Mn). The As concentrations in lettuce, potato, and tomato were 0.76, 0.63, 0.57 mg kg−1, respectively, grown in soil with no contamination, whereas in contaminated vegetables, the concentration varied significantly depending upon the level of contamination. As interaction with Cd and Pb showed negative correlation, generally, with increasing of As concentration, the Cd and Pb concentrations decreased; however, this trend was not consistent for all treatments and selected plant species. The nutrient concentrations significantly (p < .001) varied in contaminated vegetables compared with the control. The amendments of As significantly (p < .01) increased the concentrations of Ca, N, and protein, whereas P and K concentrations were decreased. The correlation between As with Mn, Mg, and vitamin C depended upon the types of vegetables and the contamination levels. Mn contribution to the Recommended Dietary Allowance was significantly (p < .01) lower for contaminated vegetables, whereas less significant (p = .05) for Fe, Mg, P, and K and non‐significant for Ca, N, and protein for different age groups. It was observed that As degraded soil affected the quality and nutritional balance in vegetables and potentially the nutrient status of consumers. The nutrients degradation in contaminated vegetables was obviously higher because As concentration reduce soil to plant transfer of essential elements by forming metal‐oxide complexes.

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“…However, this difference may relate to direct adsorption of arsenic from wastewater as a plaque on the surface of root as mentioned by many researchers [24], before exchange with soil or exiting rhizosphere will occur as runoff.…”

Section: Discussionmentioning

confidence: 99%

“…Many researchers revealed that in many plants, such as Oryza sativa, arsenic produces a thin plaque out of rhizoderm of root with Fe hydroxide as a cover [24]. This cover reduces arsenic absorption by the root and increases local arsenic content of root (apoplastic arsenic) compared with other tissue.…”

Section: Discussionmentioning

confidence: 99%

Phytoremediation Efficiency of Sorghum bicolor (L.) Moench in Removing Cadmium, Lead and Arsenic

Darabi¹,

Almodares²,

Ebrahimi³

2016

Open J Environ Biol

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Heavy metals are a significant problem in municipal wastewater, in soil accumulation and are costly to remove in order to facilitate water use in irrigation. Wastewater, with three heavy metal cations and an anion, was employed in irrigation during the Sorghum bicolor (L.) Moench growth period. Results show that the absorption coefficient or bioaccumulation ability of Sorghum bicolor (L.) Moench is relegated to certain heavy metals and their concentrations, but not at all to plant tissues in dry ash weight (DAW) scale. Heavy metals absorption was determined in the following order: cadmium = lead > arsenic, and while tissue accumulation based on DAW was equal for cadmium and lead, based on dry weight (DW) all three ions differed. The soil's ability to accumulate heavy metal ranked as follows: cadmium > lead > arsenic by wastewater quality in this experimvent. These results change many previous ideas about decreasing the transportation of heavy metals from root to shoot or other organs in plants. With low cadmium and lead concentration in irrigation, sorghum is a good plant for remediation; however, in high concentration this plant benefits from arsenic remediation. Soil is a critical parameter for wastewater phytoremediation. This topic merits further research.Heavy metal hyper accumulating plants can absorb and accumulate high levels of toxic ions in their tissues, and then can be used as toxic ion remediators. Plants vary in their ability to detoxify different ions in heavy metals from soil and water, so that each hyper accumulator plant may accumulate any heavy metal more than others and be more suitable for any heavy metal ion remediation [2].Plants used in phytoremediation may produce hazardous biomass with high levels of toxic material, rendering them unusable in food or livestock. Consequently, the selection of plants with high remediation ability and economic value is vital to phytoremediation.Sorghum is a core agricultural plant in tropical areas. It is the fifth most consumed cereal in the world, used as food, animal feed and biofuel [7]. Sorghum can grow through wastewater irrigation, and has many remediation properties in soil pollution [8].The aim of this research is to investigate the practical remediation ability of sorghum on heavy metal-polluted wastewater to improve an actual method for sewage usage. Material and Methods Culture conditions3-5 seeds of sorghum were cultivated in pots 30 cm high (15 kg) in 16 h light and 8 h dark photoperiods, at 28 o C and 18 o C, respectively. The pots were irrigated 3 times a week during a 12-week growth period. Soil analysisSoil samples were taken from all treated pots (100 gr), IntroductionWastewater is a new water resource for agriculture and green space. However, wastewater carries pollution of many types, such as heavy metals, synthetic materials and coliform bacteria. Heavy metals are not biodegradable in the environment. When accumulated in ecosystems, heavy metals are very harmful even if present in low concentrations [1].Soil's ability to accum...

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Arsenic accumulation in the roots of Helianthus annuus and Zea mays by irrigation with arsenic-rich groundwater: Insights from synchrotron X-ray fluorescence imaging

Cited by 34 publications

References 70 publications

Arsenic Uptake, Toxicity, Detoxification, and Speciation in Plants: Physiological, Biochemical, and Molecular Aspects

Arsenic Uptake, Toxicity, Detoxification, and Speciation in Plants: Physiological, Biochemical, and Molecular Aspects

Arsenic interaction and bioaccumulation in food crops grown on degraded soil: Effect on plant nutritional components and other dietary qualities

Phytoremediation Efficiency of Sorghum bicolor (L.) Moench in Removing Cadmium, Lead and Arsenic

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