Speciation, transportation, and pathways of cadmium in soil-rice systems: A review on the environmental implications and remediation approaches for food safety

Li, Zhanming; Yi, Liang; Hu, Hang‐Wei; Shaheen, Sabry M.; Zhong, Huan; Tack, Filip; Wu, Mengjie; Li, Yufeng; Gao, Yang; Rinklebe, Jörg

doi:10.1016/j.envint.2021.106749

Cited by 155 publications

(33 citation statements)

References 215 publications

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“…The effectiveness of 0.1 M EDTA was greater than using the 0.05 M solution. However, increasing the EDTA concentration to 1 M did not increase the leaching efficiency, as opposed to increasing the contact time from 3 to 24 h. The discussed results show the influence of bottom sediment components, such as minerals and organic substances, on the adsorption, immobilization and availability of TMs, which was confirmed by other researchers [ 53 , 54 , 55 , 56 ]. The extraction processes remove organic substances present in the sediments.…”

Section: Discussionsupporting

confidence: 84%

Assessment of Trace Metals Contamination, Species Distribution and Mobility in River Sediments Using EDTA Extraction

Wojtkowska

Bogacki

2022

IJERPH

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The impact of the ethylenediaminetetraacetic acid (EDTA) on speciation image of selected trace metals (Zn, Cd, Cu, Pb) in bottom sediments was determined. The influence on the effectiveness of metal removal of extraction multiplicity, type of metal, extraction time and concentration of EDTA were analyzed. With the increase of extraction multiplicity, the concentration of EDTA and contact time, the efficiency of trace metals leaching increased. The speciation analysis revealed that EDTA not only leached metals from bioavailable fractions, but also caused the transition of the metals between the fractions. The biggest amounts of bioavailable forms were found for Cd, less for Zn. The amount of bioavailable fraction was the lowest for Cu and Pb. The two first-order kinetic models fitted well the kinetics of metals extraction with EDTA, allowing the metals fractionation into “labile” (Q1), “moderately labile” (Q2) and “not extractable” fractions (Q3).

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Section: Discussionsupporting

confidence: 84%

Assessment of Trace Metals Contamination, Species Distribution and Mobility in River Sediments Using EDTA Extraction

Wojtkowska

Bogacki

2022

IJERPH

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“…Cadmium (Cd), in particular, a nonessential toxic metal that ranks 7th among 20 strong toxins, is one of the most concerned priority pollutants due to its high risk of human exposure and long residence time in soil ( 1 ). At present, the widespread occurrence of Cd contamination in agricultural soils has been reported in many regions of the world, including Thailand, India, China, and Japan ( 2 ). In China, approximately 1.3 × 10 5 ha of farmlands is contaminated by Cd, accounting for 20% of the total farmland area ( 3 ).…”

Section: Introductionmentioning

confidence: 99%

“…With increasing calls for restoration of Cd-contaminated agricultural soil, research efforts have been made to find sustainable and effective remedial solutions over the past few decades ( 2 – 4 ). Compared to physical and biological remediation strategies (e.g., soil mixing, electrokinetic, phytoremediation, and microbial remediation), in situ chemical stabilization has been widely used in the remediation of Cd-contaminated soils due to its efficiency and low-cost in decreasing Cd toxicity and bioavailability ( 5 ).…”

Section: Introductionmentioning

confidence: 99%

Distinct Responses of Rare and Abundant Microbial Taxa to In Situ Chemical Stabilization of Cadmium-Contaminated Soil

Huang

Xiong

et al. 2021

mSystems

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Understanding the ecological roles of rare and abundant species in the restoration of soil ecosystem functions is crucial to remediation of heavy metal-polluted soil. Our study assessed the efficiencies of five commonly used soil amendments on recovery of ecosystem multifunctionality and emphasized the relative contributions of rare and abundant microbial communities to ecosystem multifunctionality.

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“…In soil–cereal crops systems, Cd input is mainly derived from atmospheric deposition, phosphate fertilizers, wastewater irrigation, biosoils, e-waste, and mining activities. , The physicochemical characteristics of soil (pH and soil organic matter), soil microbe, temperature, and different features of the crops all cause Cd accumulation in grains . The Cd uptake and transport from the soil to grains is as follows: (i) root uptake via symplast or apoplast, (ii) xylem loading to shoots or sequestration by the root cells, and (iii) xylem to phloem transfer to the stem (node) and accumulation in grains (Figure ).…”

Section: Introductionmentioning

confidence: 99%

Cadmium in Cereal Crops: Uptake and Transport Mechanisms and Minimizing Strategies

Chen

et al. 2022

J. Agric. Food Chem.

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Cadmium (Cd) contamination in soils and accumulation in cereal grains have posed food security risks and serious health concerns worldwide. Understanding the Cd transport process and its management for minimizing Cd accumulation in cereals may help to improve crop growth and grain quality. In this review, we summarize Cd uptake, translocation, and accumulation mechanisms in cereal crops and discuss efficient measures to reduce Cd uptake as well as potential remediation strategies, including the applications of plant growth regulators, microbes, nanoparticles, and cropping systems and developing low-Cd grain cultivars by CRISPR/Cas9. In addition, miRNAs modulate Cd translocation, and accumulation in crops through the regulation of their target genes was revealed. Combined use of multiple remediation methods may successfully decrease Cd concentrations in cereals. The findings in this review provide some insights into innovative and applicable approaches for reducing Cd accumulation in cereal grains and sustainable management of Cd-contaminated paddy fields.

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Speciation, transportation, and pathways of cadmium in soil-rice systems: A review on the environmental implications and remediation approaches for food safety

Cited by 155 publications

References 215 publications

Assessment of Trace Metals Contamination, Species Distribution and Mobility in River Sediments Using EDTA Extraction

Assessment of Trace Metals Contamination, Species Distribution and Mobility in River Sediments Using EDTA Extraction

Distinct Responses of Rare and Abundant Microbial Taxa to In Situ Chemical Stabilization of Cadmium-Contaminated Soil

Cadmium in Cereal Crops: Uptake and Transport Mechanisms and Minimizing Strategies

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