Cadmium stress in plants: A critical review of the effects, mechanisms, and tolerance strategies

Rasafi, Taoufik El; Oukarroum, Abdallah; Haddioui, Abdelmajid; Song, Hocheol; Kwon, Eilhann E.; Bolan, Nanthi; Tack, Filip; Sebastian, Abin; Prasad, M.N.V.; Rinklebe, Jörg

doi:10.1080/10643389.2020.1835435

Cited by 331 publications

(179 citation statements)

References 300 publications

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“…All solutions of CdTe QDs inhibited the roots growth more than by 50 %, index of tolerance (TI) calculated by length (Fig. 3a) showed less obvious toxicity influence of experimental solutions than TI calculated by mass (Fig 3b which are known for its high toxicity (El Rasafi et al 2020). QDs are fluorescent unique semiconductor nanocomposites that are being widely developed for their strictly size-dependent physicochemical, optical and photophysical traits (Rocha et al 2017).…”

Section: Growth Responsementioning

confidence: 98%

“…5). CdTe QDs capable of releasing free cadmium ions, leading to the disruption of DNA replication, chromosomal aberrations, gene mutation and the generation of ROS (El Rasafi et al 2020). Su et al (2010), on the model of human embryonic kidney cells, shown the higher level of cytotoxicity of CdTe QDs than that of Cd ions and that the cytotoxicity was not only because of free Cd ions releasing.…”

Section: Cytotoxicity and Genotoxicitymentioning

confidence: 99%

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Phytotoxic effects of CdTe quantum dots on root meristems of Allium cepa L.

Smirnov

Kovalenko²,

Karpets³

et al. 2021

Nova Biotechnol. Chim.

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The effect of solutions of cadmium telluride quantum dots (CdTe QD) as powerful cytotoxic effectors was investigated using a standard Allium cepa L. test system. The diameters of synthesized CdTe QD derived from the optical data varied within 3 – 4 nm. Toxicity of experimental solutions of CdTe QD at the organism level were evaluated by measuring biomass growth of onion roots and cytotoxic influence was estimated based on proliferative activity of root meristem cells. All of CdTe QD experimental solutions in concentration 10 µM significantly inhibited the growth of Allium cepa L. roots, proliferative activity, and total dehydrogenase activity. Relation between the QDs size and their phytotoxicity was not found. However, the highest inhibiting impact was for QDs solution with a nanocrystals size of 3.5 nm. Their ability to penetrate into cells and interact with their intracellular components may cause inhibiting mitosis without fixed clastogenic and aneugenic effects. Solutions of CdTe QD at a given concentration can be considered as potent cytostatic agents for plant cells with antimitotic properties.

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Section: Growth Responsementioning

confidence: 98%

Section: Cytotoxicity and Genotoxicitymentioning

confidence: 99%

Phytotoxic effects of CdTe quantum dots on root meristems of Allium cepa L.

Smirnov

Kovalenko²,

Karpets³

et al. 2021

Nova Biotechnol. Chim.

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show abstract

“…In oxidative stress studies, metabolomic tools have allowed the assessment of plants tolerant to mineral stresses. Minerals such as cadmium can produce oxidative stress in plants and cause accumulation of reactivate oxygen species that induce damage in macromolecules such as DNA [223]. Species such as Brassica napus L. are tolerant to high concentrations of cadmium and can be used for soil bioremediation.…”

Section: Oxidative Stressmentioning

confidence: 99%

Metabolomics, a Powerful Tool for Understanding Plant Abiotic Stress

et al. 2021

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Metabolomics is a technology that generates large amounts of data and contributes to obtaining wide and integral explanations of the biochemical state of a living organism. Plants are continuously affected by abiotic stresses such as water scarcity, high temperatures and high salinity, and metabolomics has the potential for elucidating the response-to-stress mechanisms and develop resistance strategies in affected cultivars. This review describes the characteristics of each of the stages of metabolomic studies in plants and the role of metabolomics in the characterization of the response of various plant species to abiotic stresses.

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“…Other examples of phytotoxic effects are the decrease in photosynthesis rate, transpiration rate, stomatal conductance, etc.) [ 4 , 5 ]. The mechanisms of Cd biotoxicity are the result of multiple biological effects on membranes, on mitochondrial structure and function, on DNA and on gene expression.…”

Section: Introductionmentioning

confidence: 99%

Molecular Responses to Cadmium Exposure in Two Contrasting Durum Wheat Genotypes

Sabella

Luvisi

Genga

et al. 2021

IJMS

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Cadmium is a heavy metal that can be easily accumulated in durum wheat kernels and enter the human food chain. Two near-isogenic lines (NILs) with contrasting cadmium accumulation in grains, High-Cd or Low-Cd (H-Cd NIL and L-Cd NIL, respectively), were used to understand the Cd accumulation and transport mechanisms in durum wheat roots. Plants were cultivated in hydroponic solution, and cadmium concentrations in roots, shoots and grains were quantified. To evaluate the molecular mechanism activated in the two NILs, the transcriptomes of roots were analyzed. The observed response is complex and involves many genes and molecular mechanisms. We found that the gene sequences of two basic helix–loop–helix (bHLH) transcription factors (bHLH29 and bHLH38) differ between the two genotypes. In addition, the transporter Heavy Metal Tolerance 1 (HMT-1) is expressed only in the low-Cd genotype and many peroxidase genes are up-regulated only in the L-Cd NIL, suggesting ROS scavenging and root lignification as active responses to cadmium presence. Finally, we hypothesize that some aquaporins could enhance the Cd translocation from roots to shoots. The response to cadmium in durum wheat is therefore extremely complex and involves transcription factors, chelators, heavy metal transporters, peroxidases and aquaporins. All these new findings could help to elucidate the cadmium tolerance in wheat and address future breeding programs.

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Cadmium stress in plants: A critical review of the effects, mechanisms, and tolerance strategies

Cited by 331 publications

References 300 publications

Phytotoxic effects of CdTe quantum dots on root meristems of Allium cepa L.

Phytotoxic effects of CdTe quantum dots on root meristems of Allium cepa L.

Metabolomics, a Powerful Tool for Understanding Plant Abiotic Stress

Molecular Responses to Cadmium Exposure in Two Contrasting Durum Wheat Genotypes

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