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Title: | Erato polymnioides � A novel Hg hyperaccumulator plant in ecuadorian rainforest acid soils with potential of microbe-associated phytoremediation |
Authors: | Chamba, Irene Rosado, Daniel Kalinhoff, Carolina Thangaswamy, Selvaraj S�nchez-Rodr�guez, Aminael Gazquez, Manuel Jes�s |
Keywords: | Biodegradation, Environmental Mercury Mining Mycorrhizae Plant Roots Plants Rainforest Soil Soil Pollutants Ecuador Axonopus compressus Erato polymnioides Fungi Miconia Bacteria Bioremediation Economic geology Fungi Gold mines Heavy metals Mercury mines Pollution Soils gold mercury mercury Arbuscular mycorrhizal fungi Ecuador Gold extraction Gold mining Hyperaccumulator plant Phytoaccumulation Phytoremediation Rhizospheric soils arbuscular mycorrhiza bioremediation colonization extraction facilitation forest soil fungus gold mine heavy metal hyperaccumulation microorganism mining phytoremediation rainforest Article Asteraceae Axonopus compressus bioaccumulation concentration (parameters) Ecuador Erato polymnioides fungal colonization fungus isolation fungus spore metal extraction Miconia zamorensis microbial consortium mining morphotype mycorrhiza nonhuman physical chemistry phytoremediation plant leaf plant root plant stem plant tissue rain forest rhizosphere fungus soil acidity soil pollution species richness analysis bioremediation chemistry metabolism microbiology pharmacokinetics plant soil soil pollutant Soil pollution |
Issue Date: | 2017 |
Publisher: | Elsevier Ltd |
Abstract: | Mercury (Hg) accumulation capacity was assessed in three plant species (Axonopus compressus, Erato polymnioides, and Miconia zamorensis) that grow on soils polluted by artisanal small-scale gold mines in the Ecuadorian rainforest. Individuals of three species were collected at two sampling zones: i) an intensive zone (IZ, 4.8 mg Hg kg?1 of soil) where gold extraction continues to occur, and ii) a natural zone (NZ, 0.19 mg Hg kg?1 of soil). In addition, the percentage of arbuscular mycorrhizal fungi (AMF) colonization was determined in plant roots and seven fungal morphotypes isolated from rhizospheric soil. Results suggest a facilitation role of native and pollution adapted AMF on Hg phytoaccumulation. E.g., E. polymnioides increased Hg accumulation when growing with greater AMF colonization. We concluded that E. polymnioides is a good candidate for the design of microbe-assisted strategies for Hg remediation at gold mining areas. The consortia between E. polymnioides and the AMF isolated in this study could be instrumental to get a deeper understanding of the AMF role in Hg phytoaccumulation. � 2017 Elsevier Ltd |
URI: | https://dspace.utpl.edu.ec/bitstreams/2-s2.0-85029368215.pdf http://dspace.utpl.edu.ec/handle/123456789/69659 |
ISSN: | 456535 |
Appears in Collections: | Artículos de revistas Científicas |
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