Cadmium toxicity in plants: Impacts and remediation strategies

Haider, Fasih Ullah; Cai, Liqun; Coulter, Jeffrey A.; Cheema, Sardar Alam; Wu, Jun; Zhang, Renzhi; Ma, Wenjun; Farooq, Muhammad

doi:10.1016/j.ecoenv.2020.111887

Cited by 854 publications

(421 citation statements)

References 318 publications

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“…Decreased relative water contents under Cd stress has also been reported by Farouk et al [ 70 ]. It has been reported that Cd-toxicity causes physiological drought in most plants by disturbing the water relationship between plants, which is responsible for decreased relative water contents [ 4 ]. Chlorophyll contents and gas exchange parameters of synthetic and hybrid genotype showed different responses.…”

Section: Discussionmentioning

confidence: 99%

“…Soil pollution by toxic metals has become one of serious global environmental concern [1]. Heavy metals are accumulated in agricultural lands as a result of anthropogenic activities, including the use of polluted effluents, industrial wastes, phosphate fertilizers, sewage slurry, herbicides and pesticides [2][3][4]. Cadmium (Cd) is commonly distributed heavy metal in earth crust and ranked at 7 th position among the most toxic 20 metals [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Plants can easily uptake Cd from soil, which poses adverse effects on their morphological, physiological, structural and biochemical attributes [4,12,13]. The adverse impacts of Cd-toxicity include destruction of thylakoids [14], hindered development [3,12,15,16], leaf chlorosis [12,17,18], changed chloroplast ultrastructure and decreased transpiration and photosynthetic rates [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Foliar application of seed water extract of Nigella sativa improved maize growth in cadmium-contaminated soil

et al. 2021

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Cadmium (Cd) is a widespread heavy metal, which commonly exert negative impacts on agricultural soils and living organisms. Foliar application of seed water extract of black cumin (Nigella sativa L.) can mitigate the adverse impacts of Cd-toxicity in plants through its rich antioxidants. This study examined the role of seed water extracts of N. sativa (NSE) in mitigating the adverse impacts of Cd-toxicity on maize growth. Two maize genotypes (synthetic ‘Neelum’ and hybrid ‘P1543’) were grown under 0, 4, 8 and 12 mg Cd kg-1 soil. The NSE was applied at three different concentrations (i.e., 0, 10 and 20%) as foliar spray at 25 and 45 days after sowing. All Cd concentrations had no effect on germination percentage of both genotypes. Increasing Cd concentration linearly decreased root and allometric attributes, gas exchange traits and relative water contents of hybrid genotype. However, gas exchange traits of synthetic genotype remained unaffected by Cd-toxicity. Overall, hybrid genotype showed better tolerance to Cd-toxicity than synthetic genotype with better germination and allometric attributes and less Cd accumulation. Foliar application of NSE lowered negative effects of Cd-toxicity on all studied traits, except relative water contents. In conclusion, foliar application of NSE seemed a viable option to improve maize growth in Cd-contaminated soil.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Foliar application of seed water extract of Nigella sativa improved maize growth in cadmium-contaminated soil

et al. 2021

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“…The Ni levels estimated in feathers of birds by Abdullah and coauthors [22] announce that anthropogenic sources like mining and waste burning are known to rise Ni in the environment. Cadmium (Cd) is considered as one of the toxic heavy metals that is most lethal [27]. The present study evaluated the lowest concentration of Cd in blood and feather samples.…”

Section: Digestion Of Feather Sample For Heavy Metals Analysismentioning

confidence: 99%

Heavy metals accumulation trends in scavenger birds from different landfill and dumping sites of Punjab

Riaz¹

2022

PAB

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Landfills and dumping areas host huge assemblages of scavenger birds (crows, mynahs, housesparrows etc.). Feeding on landfills and dumping sites can cause several problems and toxic effects on wildlife due to heavy metals (HM) exposure with environmental concerns. This study was designed to explore the preferential accumulation of Chromium (Cr), Nickel (Ni), Lead (Pb), and Cadmium (Cd) in blood and feather of scavenger bird samples that existed in the area of Lakhodair landfill, Mehmood Booti Waste dumping site of Lahore, and Muhammad Wala Waste dumping site Faisalabad. The metals deposition was examined by Atomic Absorption Spectroscopy (AAS). The results showed the Pb concentration was significantly higher (P ≤ 0.05) and the Cd concentration was the lowest in birds of waste dumping sites. The concentration of the metals in the blood and feather varies in different species of birds trend as Pb>Cr>Ni>Cd. Findings of present study suggest that environmental pollution of heavy metals is increasingly becoming a problem due to adverse effects to scavenging birds.

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“…In plants, specific hypomethylation of DNA was reported in clover and industrial hemp exposed to cadmium, nickel, and chromium [161]. Recent studies using the methylation-sensitive amplification polymorphism approach have demonstrated that global DNA methylation changes occur in Cd-exposed Arabidopsis, O. sativa, Posidonia oceanic, and Gracilaria dura genomes [162][163][164].…”

Section: Adaptation To Trace Metalsmentioning

confidence: 99%

In Response to Abiotic Stress, DNA Methylation Confers EpiGenetic Changes in Plants

Akhter

Ali

et al. 2021

Plants

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Epigenetics involves the heritable changes in patterns of gene expression determined by developmental and abiotic stresses, i.e., drought, cold, salinity, trace metals, and heat. Gene expression is driven by changes in DNA bases, histone proteins, the biogenesis of ncRNA, and changes in the nucleotide sequence. To cope with abiotic stresses, plants adopt certain changes driven by a sophisticated biological system. DNA methylation is a primary mechanism for epigenetic variation, which can induce phenotypic alterations in plants under stress. Some of the stress-driven changes in plants are temporary, while some modifications may be stable and inheritable to the next generations to allow them to cope with such extreme stress challenges in the future. In this review, we discuss the pivotal role of epigenetically developed phenotypic characteristics in plants as an evolutionary process participating in adaptation and tolerance responses to abiotic and biotic stresses that alter their growth and development. We emphasize the molecular process underlying changes in DNA methylation, differential variation for different species, the roles of non-coding RNAs in epigenetic modification, techniques for studying DNA methylation, and its role in crop improvement in tolerance to abiotic stress (drought, salinity, and heat). We summarize DNA methylation as a significant future research priority for tailoring crops according to various challenging environmental issues.

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Cadmium toxicity in plants: Impacts and remediation strategies

Cited by 854 publications

References 318 publications

Foliar application of seed water extract of Nigella sativa improved maize growth in cadmium-contaminated soil

Foliar application of seed water extract of Nigella sativa improved maize growth in cadmium-contaminated soil

Heavy metals accumulation trends in scavenger birds from different landfill and dumping sites of Punjab

In Response to Abiotic Stress, DNA Methylation Confers EpiGenetic Changes in Plants

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