Phytoremediation of Cadmium: Physiological, Biochemical, and Molecular Mechanisms

Raza, Ali; Habib, Madiha; Najafi-Kakavand, Shiva; Zahid, Zainab; Zahra, Noreen; Sharif, Rahat; Hasanuzzaman, Mirza

doi:10.3390/biology9070177

Cited by 168 publications

(100 citation statements)

References 320 publications

(355 reference statements)

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“…Phytoremediation is an eco-friendly approach that could be a successful mitigation measure to revegetate heavy metal-polluted soil in a cost-effective way (Yan et al, 2020;Raza et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The effects of increasing doses of nickel and lead applications on some oriental tobacco varieties

Tepecik¹,

Irget²

2021

Turk J Agric For

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Heavy metals are hazardous pollutants for humans, animals and plants, when their threshold concentration exceeds. Tobacco can accumulate higher concentrations of heavy metals, and the genotypic differences of tobacco in heavy metal uptake and their growth responses have not been clearly examined. In this study, the effects of nickel (Ni) and lead (Pb) on phytoremediation capabilities were tested in four local Oriental tobacco cultivars (Basma, Akhisar, Sarıbağlar and Dibek). In two pot experiments, nitrogen (N), phosphorus (P) and potassium (P) were applied in fıxed doses, while Pb and Ni were applied at 4 different doses (10, 50, 100 and 150 mg kg -1 ). Plants were harvested after 50 days of growing period, and separated into roots, stems, leaves. The biomass values were measured, and Pb and Ni concentrations were quantified in plant organs. Results revealed that Basma cultivar had the highest total biomass value with 16.63 and 15.92 g pot -1 for Ni and Pb contents, respectively. While, the lowest total biomass was recorded in Dibek cultivar with 7.09 and 5.71 g pot -1 for Ni and Pb respectively. The biomass, Ni and Pb uptake and accumulation capabilities remained in the following order of cultivars Basma>Akhisar>Sarıbağlar>Dibek. Depending on the application doses, Ni and Pb concentrations of different plant parts (roots, stems and leaves) of all varieties showed significant (p<0.01) increases compared to the control treatments. All of the plant parts of Basma variety had higher Ni and Pb concentrations than the Akhisar, Sarıbağlar and Dibek variety. Nickel concentrations in the roots, stemsand leaves of different cultivars were determined to be the least in the control application and the highest in the NPK+150 mg kg -1 Ni (Ni 4 ) application. Lead concentrations in the roots, stems and leaves of different cultivars were determined to be the least in the control application and the highest in the NPK+150 mg kg -1 Pb (Pb 4 ) 3 application. Basma variety with higher Enrichment Factor (EF) and Bioaccumulation Factor (BAF) values were also found to be more effective than the other varieties for phytoremediation of Ni and Pb.The objective of this study was to examine the Ni and Pb uptake, transport and accumulation properties of oriental tobacco with special emphasis on its different varieties.

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Section: Introductionmentioning

confidence: 99%

The effects of increasing doses of nickel and lead applications on some oriental tobacco varieties

Tepecik¹,

Irget²

2021

Turk J Agric For

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“…Technologies applying chemical and physical methods to clean up the soils contaminated with heavy metals are associated with high costs as well as with disturbances of the local ecosystems, producing hazardous waste in a high amount (Tangahu et al, 2011; Yao et al, 2012). In contrary, developing biological technology like phytoremediation has great potential (Raza et al, 2020; Sytar et al, 2016). One of the most common techniques of phytoremediation is the phytoextraction, which applies the principle of uptake and translocation of HM from the soil and their subsequent accumulation in the plant bodies (Ranieri et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants

Sytar

Ghosh

Malinská

et al. 2020

Physiologia Plantarum

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Most of the heavy metals (HMs), and metals/metalloids are released into the nature either by natural phenomenon or anthropogenic activities. Being sessile organisms, plants are constantly exposed to HMs in the environment. The metal non‐hyperaccumulating plants are susceptible to excess metal concentrations. They tend to sequester metals in their root vacuoles by forming complexes with metal ligands, as a detoxification strategy. In contrast, the metal‐hyperaccumulating plants have adaptive intrinsic regulatory mechanisms to hyperaccumulate or sequester excess amounts of HMs into their above‐ground tissues rather than accumulating them in roots. They have unique abilities to successfully carry out normal physiological functions without showing any visible stress symptoms unlike metal non‐hyperaccumulators. The unique abilities of accumulating excess metals in hyperaccumulators partly owes to constitutive overexpression of metal transporters and ability to quickly translocate HMs from root to shoot. Various metal ligands also play key roles in metal hyperaccumulating plants. These metal hyperaccumulating plants can be used in metal contaminated sites to clean‐up soils. Exploiting the knowledge of natural populations of metal hyperaccumulators complemented with cutting‐edge biotechnological tools can be useful in the future. The present review highlights the recent developments in physiological and molecular mechanisms of metal accumulation of hyperaccumulator plants in the lights of metal ligands and transporters. The contrasting mechanisms of metal accumulation between hyperaccumulators and non‐hyperaccumulators are thoroughly compared. Moreover, uses of different metal hyperaccumulators for phytoremediation purposes are also discussed in detail.

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“…The stunted growth of Cd treated plants is directly related to reduced nutrient, water availability and enzymatic degradation of respiration, photosynthesis, nitrogen fixation (30). Inhibition of seed germination is the prime symptoms of soil Cd exposure which is attributed to the decline in water absorption followed by cessation of starch mobilization into embryo (31). Due to compromise in α amylase activity, a significant decline in starch release has been reported earlier in Cd treated barley seed (32).…”

Section: Plant Response To Bio-available Cadmiummentioning

confidence: 99%

Nanoparticles mediated cadmium toxicity amelioration in plants

Chakraborty¹,

Pal²,

Paul

2021

Plant Sci. Today

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Application of nanoparticles to address various environmental issues; especially heavy metal contaminated soil restoration is of global interest. Indiscriminate usage of phosphate fertilizer and other anthropogenic activities contribute to Cd contamination of soil, resulting in degradation of soil quality and low crop yield. By the virtue of unique physiochemical characteristics, nanoparticles (NPs) are effective enough for heavy metal stress mitigation. This review has focused on Cd uptake, accumulation and toxicity in plants followed by the successful application of different metallic and non metallic NPs for soil Cd decontamination. Positive impact of NPs as plant growth elicitor under Cd stress has been explored here. Various ways of NP application (soil, foliar, hydroponics), uptake, mode of action and effective treatment concentration have been highlighted. We have collected handful information regarding the use of NPs as nanofertilizer and nanopesticides. The negative effects of NPs have not been considered here. More in depth study to be conducted for better illumination on plant - NPs interaction, mobilization mechanism and biological activities. Though this review summarizes few facts among various aspect of NP but can be counted as a supportive documentation for the better use of NPs in environmental protection in future.

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Phytoremediation of Cadmium: Physiological, Biochemical, and Molecular Mechanisms

Cited by 168 publications

References 320 publications

The effects of increasing doses of nickel and lead applications on some oriental tobacco varieties

The effects of increasing doses of nickel and lead applications on some oriental tobacco varieties

Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants

Nanoparticles mediated cadmium toxicity amelioration in plants

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