Erato polymnioides – A novel Hg hyperaccumulator plant in ecuadorian rainforest acid soils with potential of microbe-associated phytoremediation

Chamba-Eras, Irene; Rosado, Daniel; Kalinhoff, Carolina; Selvaraj, Thangavel; Sánchez-Rodríguez, Aminael; Gázquez, M.J.

doi:10.1016/j.chemosphere.2017.08.160

Cited by 52 publications

(20 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is a general rule, except for Schefflera morototoni, which absorbs As more efficiently by having mechanisms to tolerate and accumulate this toxic element. One remarkable fact is that, although As is more available in soil, plants do not always absorb it more, mainly because it is not an essential element (Ackova, 2018) and can be more related to each plant species' capacity to exclude or tolerate this PTE (Chamba et al, 2017;Dixit et al, 2015). The relation between bioavailability indices BAC and BC was positive, which indicates that a plant's ability to bioaccumulate As increases, as does its ability to bioconcentrate As when it is available in soil.…”

Section: Discussionmentioning

confidence: 99%

An approach for evaluating the bioavailability and risk assessment of potentially toxic elements using edible and inedible plants—the Remance (Panama) mining area as a model

González-Valoys

Salgado

Rodríguez

et al. 2021

Environ Geochem Health

View full text Add to dashboard Cite

Mining affects the environment, particularly through the persistence of accumulation of tailings materials; this is aggravated under tropical climatic conditions, which favours the release of potentially toxic elements (PTEs) bioavailable to the local flora and fauna and supposing a risk to human health. The Remance gold mine (Panamá), exploited intermittently for more than 100 years, and has remained derelict for over 20 years. Within the area live farmers who carry out subsistence agriculture and livestock activities. The objective of this study has been to study the transference of PTEs in the local agricultural soil-plants system, with the goal of identifying their bioavailability to perform a human risk assessment. The results obtained of the Bioaccumulation coefficient in local plants show very weak to strong absorption of As (< 0.001–1.50), Hg (< 0.001–2.38), Sb (0.01–7.83), Cu (0.02–2.89), and Zn (0.06–5.32). In the case of Cu in grass (18.3 mg kg−1) and plants (16.9 mg kg−1) the concentrations exceed the maximum authorised value in animal nutrition for ruminants (10 mg kg−1). The risk to human health for edible plants exceeds the non-carcinogenic risk for rice, corn, cassava, and tea leaves for Sb (HQ 19.450, 18.304, 6.075, 1.830, respectively), the carcinogenic risk for Cu (CR = 2.3 × 10–3, 7.7 × 10 −4, 1.1 × 10–3, 1.0 × 10–3, respectively), and the carcinogenic risk for As in rice, corn and tea leaves (CR = 8 × 10–5, 3 × 10–5, 3 × 10–5, respectively). Urgent measures are needed to alleviate these effects.

show abstract

Section: Discussionmentioning

confidence: 99%

An approach for evaluating the bioavailability and risk assessment of potentially toxic elements using edible and inedible plants—the Remance (Panama) mining area as a model

González-Valoys

Salgado

Rodríguez

et al. 2021

Environ Geochem Health

View full text Add to dashboard Cite

show abstract

“…This could have been due to the high percentage of AMF colonization. Although root-to-leaf Hg translocation was relatively low, the concentration of Hg in the aboveground organs was still significantly higher than in the other assessed plant species (Table 2) [103]. Compared to uninoculated plants, Chrysopogon zizanioides cultivated individually with 2 commercial AMF showed improved growth and increased Hg uptake in 4 weeks, but only in the most contaminated soil (6 mg Hg kg −1 dw) [174].…”

Section: Fungimentioning

confidence: 99%

Phytoremediation and Microorganisms-Assisted Phytoremediation of Mercury-Contaminated Soils: Challenges and Perspectives

Tiodar

Văcar

Podar

2021

IJERPH

View full text Add to dashboard Cite

Mercury (Hg) pollution is a global threat to human and environmental health because of its toxicity, mobility and long-term persistence. Although costly engineering-based technologies can be used to treat heavily Hg-contaminated areas, they are not suitable for decontaminating agricultural or extensively-polluted soils. Emerging phyto- and bioremediation strategies for decontaminating Hg-polluted soils generally involve low investment, simple operation, and in situ application, and they are less destructive for the ecosystem. Current understanding of the uptake, translocation and sequestration of Hg in plants is reviewed to highlight new avenues for exploration in phytoremediation research, and different phytoremediation strategies (phytostabilization, phytoextraction and phytovolatilization) are discussed. Research aimed at identifying suitable plant species and associated-microorganisms for use in phytoremediation of Hg-contaminated soils is also surveyed. Investigation into the potential use of transgenic plants in Hg-phytoremediation is described. Recent research on exploiting the beneficial interactions between plants and microorganisms (bacteria and fungi) that are Hg-resistant and secrete plant growth promoting compounds is reviewed. We highlight areas where more research is required into the effective use of phytoremediation on Hg-contaminated sites, and conclude that the approaches it offers provide considerable potential for the future.

show abstract

“…Researchers found consortia interaction between arbuscular mycorrhizal fungi (AMF) and these plant species. For example, E. polymnioides increased Hg accumulation when grown with greater AMF colonization [ 121 ].…”

Section: New Strategies For Phytoextractionmentioning

confidence: 99%

Increase in Phytoextraction Potential by Genome Editing and Transformation: A Review

Venegas-Rioseco

Ginocchio

Ortiz-Calderón

2021

Plants

View full text Add to dashboard Cite

Soil metal contamination associated with productive activities is a global issue. Metals are not biodegradable and tend to accumulate in soils, posing potential risks to surrounding ecosystems and human health. Plant-based techniques (phytotechnologies) for the in situ remediation of metal-polluted soils have been developed, but these have some limitations. Phytotechnologies are a group of technologies that take advantage of the ability of certain plants to remediate soil, water, and air resources to rehabilitate ecosystem services in managed landscapes. Regarding soil metal pollution, the main objectives are in situ stabilization (phytostabilization) and the removal of contaminants (phytoextraction). Genetic engineering strategies such as gene editing, stacking genes, and transformation, among others, may improve the phytoextraction potential of plants by enhancing their ability to accumulate and tolerate metals and metalloids. This review discusses proven strategies to enhance phytoextraction efficiency and future perspectives on phytotechnologies.

show abstract

Erato polymnioides – A novel Hg hyperaccumulator plant in ecuadorian rainforest acid soils with potential of microbe-associated phytoremediation

Cited by 52 publications

References 52 publications

An approach for evaluating the bioavailability and risk assessment of potentially toxic elements using edible and inedible plants—the Remance (Panama) mining area as a model

An approach for evaluating the bioavailability and risk assessment of potentially toxic elements using edible and inedible plants—the Remance (Panama) mining area as a model

Phytoremediation and Microorganisms-Assisted Phytoremediation of Mercury-Contaminated Soils: Challenges and Perspectives

Increase in Phytoextraction Potential by Genome Editing and Transformation: A Review

Contact Info

Product

Resources

About