Mechanism of Toxic Metal Uptake and Transport in Plants

Mathur, Jyoti; Chauhan, Priti

doi:10.1007/978-981-15-8636-1_13

Cited by 3 publications

(1 citation statement)

References 70 publications

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“…Among analysed metals, Pb was the highly accumulated metal and it was found mainly in the aerial parts (stem & leaves) of W. somnifera (Khan et al, 2007;Balafrej et al, 2020 ). The report shows that Pb mainly precipitates in the cell wall of the root and only free Pb ions can be transported to other parts of the plant via xylem and phloem cells (Mathur & Chauhan, 2020). Therefore, in vitro liquid medium and shoot Influence and distribution of lead nitrate on growth and secondary metabolite accumulation in Withania somnifera (L.) Dunal in vitro shoots cultures (Parameswari et al, 2017) were used for the Pb exposure study which facilitates free availability of Pb to the shoots.…”

Section: Introductionmentioning

confidence: 97%

Influence and distribution of lead nitrate on growth and secondary metabolite accumulation in Withania somnifera (L.) Dunal in vitro shoots

Natarajan,

Rangasamy,

Santhanu

et al. 2023

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Withania somnifera is a medicinal ayurvedic plant native to India. Lead (Pb) is a toxic heavy metal which has no biological function in plants. The aim of the present study is to investigate the influence of heavy metal Pb on W. somnifera at cellular level under controlled conditions. The role of Pb on shoots of W. somnifera was determined in terms of biomass, secondary metabolite production (High Performance Thin Layer Chromatography) and phytochemical quantification. Influence and accumulation of Pb at the cellular level were recognized using UV visible spectroscopy, field emission scanning electron microscope and x-ray diffraction analysis. The current result showed that the concentration up to 2.4 mM Pb for 7 days of exposure showed higher biomass and withaferin A yield compared to control shoots. On the other hand, other secondary metabolites such as flavonoids, phytosterols and phenols levels were reduced compared to control shoots. In the morphological study, Pb concentration in the analysed sample was determined as 2%. The probability of the nanoparticle nature of the bioaccumulated lead also verified using spectroscopy and x-ray diffraction analysis. To date, we are the first to report on the influence of Pb on in vitro shoot cultures of W. somnifera.

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Section: Introductionmentioning

confidence: 97%

Influence and distribution of lead nitrate on growth and secondary metabolite accumulation in Withania somnifera (L.) Dunal in vitro shoots

Natarajan,

Rangasamy,

Santhanu

et al. 2023

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Remediation approaches for heavy metals contaminated soils

Aslam,

Naveed,

Aslam

et al. 2024

Bio-Organic Amendments for Heavy Metal Remediation

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Phytoremediation technologies and their mechanism for removal of heavy metal from contaminated soil: An approach for a sustainable environment

et al. 2023

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The contamination of soils with heavy metals and its associated hazardous effects are a thrust area of today’s research. Rapid industrialization, emissions from automobiles, agricultural inputs, improper disposal of waste, etc., are the major causes of soil contamination with heavy metals. These contaminants not only contaminate soil but also groundwater, reducing agricultural land and hence food quality. These contaminants enter the food chain and have a severe effect on human health. It is important to remove these contaminants from the soil. Various economic and ecological strategies are required to restore the soils contaminated with heavy metals. Phytoremediation is an emerging technology that is non-invasive, cost-effective, and aesthetically pleasing. Many metal-binding proteins (MBPs) of the plants are significantly involved in the phytoremediation of heavy metals; the MBPs include metallothioneins; phytochelatins; metalloenzymes; metal-activated enzymes; and many metal storage proteins, carrier proteins, and channel proteins. Plants are genetically modified to enhance their phytoremediation capacity. In Arabidopsis, the expression of the mercuric ion-binding protein in Bacillus megaterium improves the metal accumulation capacity. The phytoremediation efficiency of plants is also enhanced when assisted with microorganisms, biochar, and/or chemicals. Removing heavy metals from agricultural land without challenging food security is almost impossible. As a result, crop selections with the ability to sequester heavy metals and provide food security are in high demand. This paper summarizes the role of plant proteins and plant–microbe interaction in remediating soils contaminated with heavy metals. Biotechnological approaches or genetic engineering can also be used to tackle the problem of heavy metal contamination.

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Mechanism of Toxic Metal Uptake and Transport in Plants

Cited by 3 publications

References 70 publications

Influence and distribution of lead nitrate on growth and secondary metabolite accumulation in Withania somnifera (L.) Dunal in vitro shoots

Influence and distribution of lead nitrate on growth and secondary metabolite accumulation in Withania somnifera (L.) Dunal in vitro shoots

Remediation approaches for heavy metals contaminated soils

Phytoremediation technologies and their mechanism for removal of heavy metal from contaminated soil: An approach for a sustainable environment

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