Physiological effects of mercury-contaminated Oxisols on common bean and oat

Lima, Francielle Roberta Dias de; Barbosa, Alice Pita; Vasques, Isabela C.F.; Oliveira, Jakeline Rosa de; Silva, Aline Oliveira; Martins, Gabriel Caixeta; Engelhardt, Mateus Moreira; Pereira, Polyana; Reis, Rayner H. C. L.; Guilherme, Luiz Roberto Guimarães; Marques, João José

doi:10.1007/s11356-020-11286-x

Cited by 2 publications

(1 citation statement)

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“…The toxicity due to Hg exposure is often associated with ROS generation, disturbance of almost any function in which critical or non-protected proteins are involved due to the high affinity of Hg for sulphydryl (–SH), negative effects on both light and dark reactions of photosynthesis, and inhibition of the water channels in the membrane of higher plant cells ( Patra et al, 2004 ; Chen and Yang, 2012 ). The photosynthetic rate, stomatal conductance, and transpiration decreased in Avena sativa grown in an Oxisol (Typic Hapludox) polluted with 2.5–80 mg Hg kg –1 soil, but no oxidative stress in the leaves was observed ( Lima et al, 2021 ). Possibly, the Hg concentrations in the leaves of A. sativa were not high enough to induce oxidative stress, or the Hg 2+ was reduced inside the plant into Hg 0 to avoid the binding of Hg 2+ to –SH groups of antioxidative compounds.…”

Section: Uptake Transport Accumulation and Toxicity Of Trace Elements In Grassesmentioning

confidence: 99%

Are Grasses Really Useful for the Phytoremediation of Potentially Toxic Trace Elements? A Review

et al. 2021

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The pollution of soil, water, and air by potentially toxic trace elements poses risks to environmental and human health. For this reason, many chemical, physical, and biological processes of remediation have been developed to reduce the (available) trace element concentrations in the environment. Among those technologies, phytoremediation is an environmentally friendly in situ and cost-effective approach to remediate sites with low-to-moderate pollution with trace elements. However, not all species have the potential to be used for phytoremediation of trace element-polluted sites due to their morpho-physiological characteristics and low tolerance to toxicity induced by the trace elements. Grasses are prospective candidates due to their high biomass yields, fast growth, adaptations to infertile soils, and successive shoot regrowth after harvest. A large number of studies evaluating the processes related to the uptake, transport, accumulation, and toxicity of trace elements in grasses assessed for phytoremediation have been conducted. The aim of this review is (i) to synthesize the available information on the mechanisms involved in uptake, transport, accumulation, toxicity, and tolerance to trace elements in grasses; (ii) to identify suitable grasses for trace element phytoextraction, phytostabilization, and phytofiltration; (iii) to describe the main strategies used to improve trace element phytoremediation efficiency by grasses; and (iv) to point out the advantages, disadvantages, and perspectives for the use of grasses for phytoremediation of trace element-polluted soils.

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Section: Uptake Transport Accumulation and Toxicity Of Trace Elements In Grassesmentioning

confidence: 99%