Heavy metal mobility in surface water and soil, climate change, and soil interactions

Oyewo, Opeyemi A.; Adeniyi, Amos; Bopape, Mokgadi F.

doi:10.1016/b978-0-12-818032-7.00004-7

Cited by 28 publications

(12 citation statements)

References 99 publications

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“…While all these factors influence the behavior of metals in soils [ 64 ], soil pH is one of the most important parameters affecting the mobility of metals [ 65 ]. For most heavy metals, mobility generally increases at lower pH and decreases as soil pH increases.…”

Section: Resultsmentioning

confidence: 99%

Can Urban Grassland Plants Contribute to the Phytoremediation of Soils Contaminated with Heavy Metals

2022

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The main objective of this study was to investigate whether the most common wild plant species of urban grassland can be used for phytoremediation of soils polluted with heavy metals. The study was conducted in the city of Varaždin, in northern Croatia. The content of heavy metals (Cd, Cu, Fe, Mn, Ni, Pb, Zn) was determined in soil samples as well as in unwashed and washed plant samples (Taraxacum officinale, Plantago lanceolata, Trifolium repens). The results show that the most polluted site is the railway station, while most sites are polluted by road traffic. The soils are most enriched with Pb, Cu, Zn and Cd. The bioconcentration factors for all three plant species are <1, indicating the relatively low capacity of phytoextraction. A considerable amount of heavy metals is found in the dust deposited on the plant surface, which is confirmed by a statistically significant difference between washed and unwashed plant samples. In addition, the biomass of each plant species that can be removed (in t/ha year), the mass of specific heavy metal that can be removed (in kg/ha), and the years required for phytoremediation are reported. In conclusion, phytoremediation with only common plant species of urban grassland is not possible within a reasonable period of time.

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Section: Resultsmentioning

confidence: 99%

Can Urban Grassland Plants Contribute to the Phytoremediation of Soils Contaminated with Heavy Metals

2022

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“…Climate changes give rise to several environmental stresses, including toxic metals/metalloids. Consequently, climate change significantly impacts the toxic metals/metalloids pollutions based on bioavailability, fate, and toxicity ( Wijngaard et al, 2017 ; Wu et al, 2017 ; Oyewo et al, 2020 ). Among various environmental stresses, drought stress may cause an upsurge in eutrophication and toxic metals/metalloids meditations.…”

Section: Introductionmentioning

confidence: 99%

“…Among various environmental stresses, drought stress may cause an upsurge in eutrophication and toxic metals/metalloids meditations. Whereas the flooding stress may cause more toxic metals/metalloids meditations owing to desorption or re-suspension signifying that climate change determined impacts on toxic metals/metalloids transport is a composite and dynamic environmental problem, demanding a systematic understanding of toxic metals/metalloids accessibility, transport, and uptake pathways ( Wijngaard et al, 2017 ; Wu et al, 2017 ; Oyewo et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Advances in “Omics” Approaches for Improving Toxic Metals/Metalloids Tolerance in Plants

et al. 2022

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Food safety has emerged as a high-urgency matter for sustainable agricultural production. Toxic metal contamination of soil and water significantly affects agricultural productivity, which is further aggravated by extreme anthropogenic activities and modern agricultural practices, leaving food safety and human health at risk. In addition to reducing crop production, increased metals/metalloids toxicity also disturbs plants’ demand and supply equilibrium. Counterbalancing toxic metals/metalloids toxicity demands a better understanding of the complex mechanisms at physiological, biochemical, molecular, cellular, and plant level that may result in increased crop productivity. Consequently, plants have established different internal defense mechanisms to cope with the adverse effects of toxic metals/metalloids. Nevertheless, these internal defense mechanisms are not adequate to overwhelm the metals/metalloids toxicity. Plants produce several secondary messengers to trigger cell signaling, activating the numerous transcriptional responses correlated with plant defense. Therefore, the recent advances in omics approaches such as genomics, transcriptomics, proteomics, metabolomics, ionomics, miRNAomics, and phenomics have enabled the characterization of molecular regulators associated with toxic metal tolerance, which can be deployed for developing toxic metal tolerant plants. This review highlights various response strategies adopted by plants to tolerate toxic metals/metalloids toxicity, including physiological, biochemical, and molecular responses. A seven-(omics)-based design is summarized with scientific clues to reveal the stress-responsive genes, proteins, metabolites, miRNAs, trace elements, stress-inducible phenotypes, and metabolic pathways that could potentially help plants to cope up with metals/metalloids toxicity in the face of fluctuating environmental conditions. Finally, some bottlenecks and future directions have also been highlighted, which could enable sustainable agricultural production.

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“…On the other hand, the negative consequences of TWW reuse in agriculture are associated with the buildup of heavy metals (HMs) in the soil [14]. Such HMs are dissolved in soil water, bound tightly to soil particles, or are exchangeable with the components of the soil matrix, and are thus potentially mobile [15]. Many HMs are highly toxic, and their presence in the soil and water can cause serious health problems [14]; indeed, the accumulation of HMs in the food chain is very harmful and dangerous to human health [16].…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation Potential of Selected Ornamental Woody Species to Heavy Metal Accumulation in Response to Long-Term Irrigation with Treated Wastewater

Al-Sayaydeh

Al-Hawadi

Al-Habahbeh

et al. 2022

Water

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Arid and semiarid environments of Mediterranean countries suffer from scarcity of water resources, which limits their agriculture productivity. Using treated wastewater (TWW) is considered an alternative strategy for irrigation purposes in such areas. However, TWW contains substantial levels of heavy metals (HMs) and contaminants that pollute the environment and soil. The aim of this study is to evaluate the phytoremediation potential of six selected woody tree species under long-term irrigation with TWW. The concentration, bioaccumulation factor (BFC), translocation factor (TF), and comprehensive bioconcentration index (CBCI) of HMs were measured in the various parts (roots, bark, and leaves) of the studied tree species. The results show a general pattern of mineral accumulation in the roots and low translocation to the areal parts of various species. Cupressus sempervirens, which is a native species in Mediterranean environments, had higher TF values for Fe, Mn, Cu, Cr, Cd, and Pb metals in its areal parts compared to other tree species. The study shows that Ficus nitida has the potential to be a hyperaccumulator for Cd in its bark, with a TF value that exceeds 12. Deciduous trees species (Populus nigra and Robinia pseudoacacia) were found to have high TF values for Ni and Cd toward their areal parts, whereas a higher TF for Cr (1.21) was only found in P. nigra bark. Cupressus sempervirens had, significantly, the highest bark and leaf CBCI values (0.83 and 0.82, respectively), whereas Ficus nitida had the second-highest values in the bark and leaves (0.56 and 0.51, respectively). Therefore, Cupressus sempervirens and Ficus nitida are considered good hyperaccumulators for various HMs, and can be used for phytoremediation activities in polluted areas.

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Heavy metal mobility in surface water and soil, climate change, and soil interactions

Cited by 28 publications

References 99 publications

Can Urban Grassland Plants Contribute to the Phytoremediation of Soils Contaminated with Heavy Metals

Can Urban Grassland Plants Contribute to the Phytoremediation of Soils Contaminated with Heavy Metals

Advances in “Omics” Approaches for Improving Toxic Metals/Metalloids Tolerance in Plants

Phytoremediation Potential of Selected Ornamental Woody Species to Heavy Metal Accumulation in Response to Long-Term Irrigation with Treated Wastewater

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