Effect of different forms and sources of arsenic on crop yield and arsenic concentration

Jiang, Qing Qiao; Singh, Bal Ram

doi:10.1007/bf00479798

Cited by 109 publications

(6 citation statements)

References 35 publications

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“…Similar results have been reported by several researchers where plants tended to suffer from a reduction in root and shoot growth when exposed to excess As in the growth medium (59)(60)(61)(62). The excess amount of available As in the soil can interrupt plant metabolism, consequently leading to leaf senescence, reduction in the number of leaves, stunted growth, and reduction in biomass (63)(64)(65)(66)(67)(68). At high As concentrations, inhibition of shoot growth could be attributed to a reduction in enzymatic activity (61, 62), while the inhibition of root growth may be associated with reduced mitotic activity in the root meristematic zone or a reduction in cell enlargement in the elongation zone due to decreased turgor of the cell, as reported by other researchers in Brassica juncea, ferns, wheat (Triticum aestivum), rice (Oryza sativa), broad bean (Vicia faba), velvet grass (Holcus lanatus), and Arabidopsis thaliana (61, 62, 66, 69, 70).…”

Section: Discussionsupporting

confidence: 86%

Barnyard grass (Echinochloa crus-galli L.) as a candidate plant for phytoremediation of arsenic from arsenic-amended and industrially polluted soils

Sultana¹,

Ahmed²,

Islam³

et al. 2022

Front. Soil Sci.

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The potentiality of barnyard grass for remediation of arsenic (As)-contaminated soil has been reported in several research works. However, the phytoremediation ability of barnyard grass from industrially polluted multimetal-contaminated soil in comparison to As-amended soil needs to be elucidated. This work investigated the As remediation potentiality of barnyard grass from As-amended and industrially polluted soils, and the fractionation of As was done in soils with plants and without plants grown. The result showed that at the highest As level in the soil, barnyard grass accumulated the highest amount of As in both the root (414.81 mg kg-1) and shoot (114.12 mg kg-1). However, barnyard grass produced the highest amount of biomass in industrially polluted soil that resulted in the highest amount of As uptake. Moreover, barnyard grass also accumulated lead (Pb) and chromium (Cr) from industrially polluted soil. The bioaccumulation factor (BF) of As was >1 in As-amended soil in all the treatments as well as in industrially polluted soil. Fractionation of As in post-harvest soil revealed that compared to soil without plants grown, As in the soil was reduced from residual As (F5); As associated with well-crystallized hydrous oxides of iron (Fe) and aluminum (Al) (F4); As associated with amorphous and poorly crystallized hydrous oxides of Fe and Al (F3), whereas a slight increase was found in non-specifically sorbed As (F1) and specifically sorbed As (F2) due to the plant’s effect. The slight increase in the concentration of As in F1 and F2 fractions contributed to the bioavailable forms of As in the rhizosphere and sustained As concentration for further plant uptake. The maximum plant growth and highest uptake of As in the industrially polluted soil revealed the potentiality of barnyard grass for remediation of multimetal-polluted soil.

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Section: Discussionsupporting

confidence: 86%

Barnyard grass (Echinochloa crus-galli L.) as a candidate plant for phytoremediation of arsenic from arsenic-amended and industrially polluted soils

Sultana¹,

Ahmed²,

Islam³

et al. 2022

Front. Soil Sci.

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“…Greenhouse pot experiments of wheat grown in 50 µg As g -1 spiked soil resulted in shoot levels of ∼3 µg g -1 d. wt (Table S6), while levels of over 30 µg g -1 d. wt. were found in barley shoot grown in soils amended to 250 µg As g -1 d. wt (22). Similarly, for wheat and barley grown in As-elevated soil (range 53.8-709 µg g -1 ), contaminated by the Aznalco ´llar mine spill, levels of ∼20 µg g -1 d. wt were detected in the shoots (14).…”

Section: Resultsmentioning

confidence: 92%

Greatly Enhanced Arsenic Shoot Assimilation in Rice Leads to Elevated Grain Levels Compared to Wheat and Barley

Williams

Villada

Deacon

et al. 2007

Environ. Sci. Technol.

692

353

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Paired grain, shoot, and soil of 173 individual sample sets of commercially farmed temperate rice, wheat, and barley were surveyed to investigate variation in the assimilation and translocation of arsenic (As). Rice samples were obtained from the Carmargue (France), Doñana (Spain), Cadiz (Spain), California, and Arkansas. Wheat and barleywere collected from Cornwall and Devon (England) and the east coast of Scotland. Transfer of As from soil to grain was an order of magnitude greater in rice than for wheat and barley, despite lower rates of shoot-to-grain transfer. Rice grain As levels over 0.60 microg g(-1) d. wt were found in rice grown in paddy soil of around only 10 microg g(-1) As, showing that As in paddy soils is problematic with respect to grain As levels. This is due to the high shoot/soil ratio of approximately 0.8 for rice compared to 0.2 and 0.1 for barley and wheat, respectively. The differences in these transfer ratios are probably due to differences in As speciation and dynamics in anaerobic rice soils compared to aerobic soils for barley and wheat. In rice, the export of As from the shoot to the grain appears to be under tight physiological control as the grain/shoot ratio decreases by more than an order of magnitude (from approximately 0.3 to 0.003 mg/kg) and as As levels in the shoots increase from 1 to 20 mg/kg. A down regulation of shoot-to-grain export may occur in wheat and barley, but it was not detected at the shoot As levels found in this survey. Some agricultural soils in southwestern England had levels in excess of 200 microg g(-1) d. wt, although the grain levels for wheat and barley never breached 0.55 microg g(-1) d. wt. These grain levels were achieved in rice in soils with an order of magnitude lower As. Thus the risk posed by As in the human food-chain needs to be considered in the context of anaerobic verses aerobic ecosystems.

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“…36 The phytotoxicity symptoms of As such as marked reduction in plant growth were also observed across all the contaminated and As spiked soils. 37,38 Similarly, Jiang and Singh 37 reported a substantial decrease in the dry biomass yield of rye grass and barley plants due to the application of As, which was attributed to the inhibitory effect of As (as As V ) on the phosphate uptake pathway leading to insufficient levels of phosphorylated compounds. Arsenic in As III form is known to have twice as much phytotoxicity as As V , since it rapidly combines with the dithiol functional groups and destroys the functioning of sulfhydryl enzymes, thereby causing the membrane degradation and immediate cell death.…”

Section: ' Results and Discussionmentioning

confidence: 99%

Arsenic Speciation and Phytoavailability in Contaminated Soils Using a Sequential Extraction Procedure and XANES Spectroscopy

Niazi

Singh

Shah

2011

Environ. Sci. Technol.

148

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In this study, a sequential extraction procedure (SEP) and X-ray absorption near edge structure (XANES) spectroscopy were used to determine the solid-phase speciation and phytoavailability of arsenic (As) of historically contaminated soils from As containing pesticides and herbicides and soils spiked with As in the laboratory. Brassica juncea was grown in the contaminated soils to measure plant available As in a glasshouse experiment. Arsenic associated with amorphous Fe oxides was found to be the dominant phase using both SEP and XANES spectroscopy. Arsenic predominantly existed in arsenate (As(V)) form in the soils; in a few samples As was also present in arsenite (As(III)) form or in scorodite mineral. Arsenic concentration in shoots showed significant (p < 0.001-0.05) correlations with the exchangeable As (r = 0.85), and amorphous Fe oxides associated As evaluated by the SEP (r = 0.67), and As associated with amorphous Fe oxides as determined by XANES spectroscopy (r = 0.51). The results show that As in both fractions was readily available for plant uptake and may pose a potential risk to the environment. The combination of SEP and XANES spectroscopy allowed us the quantitative speciation of As in the contaminated soils and the identification of valence and mineral forms of As. Such detailed knowledge on As speciation and availability is vital for management and rehabilitation of As-contaminated soils.

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Effect of different forms and sources of arsenic on crop yield and arsenic concentration

Cited by 109 publications

References 35 publications

Barnyard grass (Echinochloa crus-galli L.) as a candidate plant for phytoremediation of arsenic from arsenic-amended and industrially polluted soils

Barnyard grass (Echinochloa crus-galli L.) as a candidate plant for phytoremediation of arsenic from arsenic-amended and industrially polluted soils

Greatly Enhanced Arsenic Shoot Assimilation in Rice Leads to Elevated Grain Levels Compared to Wheat and Barley

Arsenic Speciation and Phytoavailability in Contaminated Soils Using a Sequential Extraction Procedure and XANES Spectroscopy

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