The antioxidant defense system and bioremediation

Kraj, Wojciech; Pietrzykowski, Marcin; Warczyk, Arkadiusz

doi:10.1016/b978-0-12-819382-2.00012-0

Cited by 4 publications

(1 citation statement)

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“…One of the earliest biochemical changes that can occur when plants are exposed to heavy metals is an increase in ROS quantities, leading to oxidative damage (Dutta, et al, 2018;Kraj, et al, 2021). In response, the plant develops complicated mechanisms to adapt and survive under heavy metal stress.…”

Section: Enzymatic and Non-enzymatic Antioxidant Responsesmentioning

confidence: 99%

Remediation of heavy metals by native plant species grown in Iran’s richest gold mine and study of plants’ pollution tolerance strategies

Torbati,

Esmailbegi Kermani,

Abedini

2024

Front. Earth Sci.

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Mining is defined as an environmentally hazardous activity that releases metals and other elements to the environment. Bioremediation is a natural and sustainable technique for harnessing the potential of microorganisms and plants to remove, degrade, or stabilize pollutants from contaminated sites and enable cleanup and restoration of the environment. In the present study, following the investigation of pollution of heavy metals in soil samples collected from the Zarshuran mining area, the role of twenty native plant species in the bioaccumulation of heavy metals was evaluated. After preparation of soil and plant samples, inductively coupled plasma-mass spectroscopy (ICP-MS) was used to determine the concentrations of elements in the soil and plant samples. It was confirmed that the soil samples were highly contaminated by silver (Ag), zinc (Zn), cadmium (Cd), lead (Pb), and antimony (Sb). High amounts of Pb and Zn were accumulated in Eryngium billardieri and Astragalus rostratus. Further, these two plant species could uptake, transport, and accumulate Ag in their aerial parts and the enrichment coefficient of their shoots was more than 1. Scorzonera latifolia also had good potential to stabilise Ag, Zn, and Pb in its root. As a result, E. billardieri, A. rostratus, and S. latifolia may be suitable candidate species to clean heavy metals from soils in contaminated sites. Overall, augmentation of superoxide dismutase activity and the amounts of total phenols and flavonoids in different parts of E. billardieri and A. rostratus confirmed the induction of antioxidant defense systems in the plants (compared to the control plants) and an attempt by the plants to tolerate heavy metal pollution.

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Section: Enzymatic and Non-enzymatic Antioxidant Responsesmentioning

confidence: 99%