Transgenic plants and rhizosphere-associated microbiota in phytoremediation of heavy metals and organic pollutants

Boechat, Cácio Luiz; Miranda, Rafael de Souza; Lacerda, Julian Junio de Jesús; Coelho, Daniel Gomes; Sobrinho, Laio Silva; Saraiva, Paloma Cunha

doi:10.1016/b978-0-12-820318-7.00015-0

Cited by 6 publications

(1 citation statement)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the toxic effects, some plant species have evolved multiple defense mechanisms to control contaminant uptake and detoxification, allowing them to survive under high concentrations of metals in external medium and accumulate them into tissues and cells, which is a desirable trait for phytoremediation purposes (BOECHAT et al, 2021). The toxicity induced by As, particularly, affects several aspects of plant metabolism, even at micromolar concentrations (NABI et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Metallic elements in plants: bioaccumulation, phytoremediation potential and physiological responses

Coelho¹

Self Cite

View full text Add to dashboard Cite

Pollution caused by metallic elements in the environment is becoming increasingly problematic worldwide. In the current work, several aspects of the metallic elements in plants were investigated, including the accumulation in species affected by an environmental disaster involving the disruption of a mining tailing dam; the physiological responses and phytoremediation potential of the aquatic macrophyte water lettuce (Pistia stratiotes) subjected to excess iron (Fe) and manganese (Mn), and combinations of Fe, Mn, and arsenic (As); and, finally, the in vivo monitoring of As-induced responses in Arabidopsis thaliana plants. We found a concerning enrichment of metal accumulation, especially for Fe and Mn, in the plant species evaluated in affected areas by mining tailings. Considering the spreading potential of contamination in aquatic environments, water lettuce plants, which are often used in phytoremediation studies, were tested for removal of excess Fe and Mn, along with the association with As. The plants displayed a great accumulation of Fe, mainly trapped in roots, whereas Mn was hyperaccumulated in shoots and roots. Accumulation of Mn was observed especially in the apoplast, avoiding major impairments of physiological processes. In presence of As, the plants displayed root loss as an acclimation response, followed by re-emission of the organs. Nonetheless, the specimens were able to maintain a high accumulation of the pollutants, supplied isolated or in association, demonstrating phytoremediation potential in multi- contaminated environments. Furthermore, the in vivo measurements using genetically-encoded biosensors showed intriguing stability of Mg-ATP 2− levels upon short-term arsenate (AsV) exposure. We also observed that the depletion of the GSH pool is the most likely cause of glutathione redox potential (E GSH ) oxidation. The findings presented here emphasize the importance of continuing to monitor metal-contaminated areas, as well as exposing alternatives for phytoremediation of aquatic environments and providing new insights into plant metabolism in response to pollutants. Keywords: Aquatic plants – Pollution effect. Aquatic plants – Heavy metal effects. Pistia stratiotes. Heavy metals. Aquatic plants – Metabolism.

show abstract

Section: Introductionmentioning

confidence: 99%

Metallic elements in plants: bioaccumulation, phytoremediation potential and physiological responses

Coelho¹

Self Cite

View full text Add to dashboard Cite

show abstract

Phytoremediation of Environmental Matrices Contaminated with Photosystem II-Inhibiting Herbicides

Kráľová

Jampílek²

2022

Pesticides Bioremediation

View full text Add to dashboard Cite

Medicinal and Aromatic Plant Species with Potential for Remediation of Metal(loid)-Contaminated Soils

Kráľová

Jampílek

2022

Sustainable Management of Environmental Contaminants

View full text Add to dashboard Cite

Transgenic plants and rhizosphere-associated microbiota in phytoremediation of heavy metals and organic pollutants

Cited by 6 publications

References 82 publications

Metallic elements in plants: bioaccumulation, phytoremediation potential and physiological responses

Metallic elements in plants: bioaccumulation, phytoremediation potential and physiological responses

Phytoremediation of Environmental Matrices Contaminated with Photosystem II-Inhibiting Herbicides

Medicinal and Aromatic Plant Species with Potential for Remediation of Metal(loid)-Contaminated Soils

Contact Info

Product

Resources

About