Molecular mechanisms underlying heavy metal uptake, translocation and tolerance in hyperaccumulators-an analysis

Pasricha, Sharda; Mathur, V. K.; Garg, Arushi; Lenka, Satyajit; Verma, K. S.; Agarwal, Surbhi

doi:10.1016/j.envc.2021.100197

Cited by 107 publications

(60 citation statements)

References 216 publications

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“…Chelation of heavy metals into the cytosol by metallothionine classes I and II, organic acids, and the amino acids (histidine), glutathione (GSH), phytochelatin (PC), and nicotianamine (NA), followed by transfer of complexes to the vacuole or cell wall [ 15 ].…”

Section: Figurementioning

confidence: 99%

Natural Molecular Mechanisms of Plant Hyperaccumulation and Hypertolerance towards Heavy Metals

Skuza

Szućko-Kociuba

Filip

et al. 2022

IJMS

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The main mechanism of plant tolerance is the avoidance of metal uptake, whereas the main mechanism of hyperaccumulation is the uptake and neutralization of metals through specific plant processes. These include the formation of symbioses with rhizosphere microorganisms, the secretion of substances into the soil and metal immobilization, cell wall modification, changes in the expression of genes encoding heavy metal transporters, heavy metal ion chelation, and sequestration, and regenerative heat-shock protein production. The aim of this work was to review the natural plant mechanisms that contribute towards increased heavy metal accumulation and tolerance, as well as a review of the hyperaccumulator phytoremediation capacity. Phytoremediation is a strategy for purifying heavy-metal-contaminated soils using higher plants species as hyperaccumulators.

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Section: Figurementioning

confidence: 99%

Natural Molecular Mechanisms of Plant Hyperaccumulation and Hypertolerance towards Heavy Metals

Skuza

Szućko-Kociuba

Filip

et al. 2022

IJMS

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“…Among plants of the Brassicaceae family, the B. junceae as a species with high tolerance to the effects of Zn contamination has been well investigated. This plant species, described as a hyperaccumulator, and its main mechanisms of tolerance have been studied [ 16 ]. B. junceae is recommended as one of the perspective plant species for the phytoextraction approach to polluted soils.…”

Section: Discussionmentioning

confidence: 99%

“…Remarkably, the realizing of phytoremediation technology is cost-effective, due to its independence from highly qualified personnel or expensive equipment [ 14 ]. There are several strategies of phytoremediation, but two of them are more effective: phytoextraction—the absorption of metals from soil by metal accumulators and sequestrating them in the aboveground part; and phytostabilization—process by which plants stabilize the metal ion by roots, resulting in a drop of pollution in soil [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Zinc Excess in Substrate on Physiological Responses of Sinapis alba L.

Repkina

Nilova

Kaznina

2023

Plants

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Zinc (Zn) is a fundamental micronutrient for plants’ metabolism, but in high concentrations, it is toxic. In this study, we investigated the physiological response of white mustard (Sinapis alba L. cv. Belgia) plants to the Zn excess concentrations (50, 100, and 150 mg kg−1) in the substrate. The results showed that sand Zn concentration of 50 mg kg−1 did not affect the physiological parameters of plants, despite to the high Zn accumulation in shoots. The growth, biomass accumulation, photosynthesis rate, and pigment amount were inhibited at Zn concentrations of 100 and 150 mg kg−1 in substrate. A slight increase in malondialdehyde (MDA) was also observed at zinc concentrations (100 and 150 mg kg−1) without changes in membrane permeability, which is partly connectedtoan increase in the proline content. The results suggested that white mustard tolerates Zn excess impact. S. alba is able to grow on Zn-contaminated substrates along with significant Zn accumulation in shoots, which supports its high potential for phytoremediation of Zn-polluted agricultural soils. It is also possible to propose the following recycling of white mustard plants for Zn fortification feedstuff.

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“…Mer cury, in con trast to zinc, is re dun dant for plants and its high level is phytotoxic. The toxic ef fect of Hg is man i fested, for in stance, in re duc ing the abil ity of plants to take up wa ter, loss of cru cial el e ments (K, Ca), and ac cu mu la tion of Fe (Pastricha et al, 2021). How ever, all the herein-re ported con cen tra tions of Hg were above the typ i cal val ues noted in plants.…”

Section: Anomalous Concentration Of Elements As a Potential Environme...mentioning

confidence: 97%

Accumulation of elements in vegetation spontaneously developing on self-heating waste dumps in the Upper Silesia area (Poland)

WOJEWÓDKA-PRZYBYŁ¹,

STIENSS²,

Kruszewski

2022

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Molecular mechanisms underlying heavy metal uptake, translocation and tolerance in hyperaccumulators-an analysis

Cited by 107 publications

References 216 publications

Natural Molecular Mechanisms of Plant Hyperaccumulation and Hypertolerance towards Heavy Metals

Natural Molecular Mechanisms of Plant Hyperaccumulation and Hypertolerance towards Heavy Metals

Effect of Zinc Excess in Substrate on Physiological Responses of Sinapis alba L.

Accumulation of elements in vegetation spontaneously developing on self-heating waste dumps in the Upper Silesia area (Poland)

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