Vista normal Vista MARC

Glyphosate-remediation potential of selected plant species in artificial wetlands

López Chávez, Mariana Yadira [autora] | Álvarez Legorreta, Teresa [autora] | Infante Mata, Dulce María [autora] | Dunn, Michael F [autor] | Guillén Navarro, Griselda Karina [autora].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Glifosato | Fitorremediación | Plantas para tratamiento de aguas residuales | Humedales construidos | Impacto ambientalTema(s) en inglés: Glyphosate | Fitorremediation | Sewage treatment and disposal | Artificial wetlands | Environmental impactDescriptor(es) geográficos: Región Soconusco (Chiapas, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Science of the Total Environment. Volumen 781, 146812 (August 2021), páginas 1-10. --ISSN: 1879-1026Número de sistema: 60800Resumen:
Inglés

Glyphosate is a systemic herbicide with an important environmental impact due to its adverse effect on non-targetorganisms. Its removal can be accomplished by wild (native) plants which, together with their associated microbiota, have acquired tolerance against glyphosate or are able to degrade it. Little is known, however, about these plants' potential for glyphosate remediation and the role that plant-microbe interactions play in this process. The objective of the present study was to evaluate plant species from locations with a history of glyphosate exposure – drainage ditches of banana plantations (Musa sp.), or riparian areas - to determine which, in combination withtheir microbiota, promote the removal of glyphosate. Five plant species were selected to evaluate their responseto inundated growing conditions and exposure to 20 mg glyphosate acid equivalent/L for 47 days. Parameters affecting plant growth and glyphosate removal were recorded. Rhizosphere bacterial strains were identified and their tolerance to different glyphosate concentrations determined. Also, the activity of 19 rhizospheric enzymes associated with the phosphorus, carbon and nitrogen cycles were analyzed. Glyphosate-treated Panicum maximum exhibited the highest removal efficiency (87%), followed by Typha domingensis and Heliconia latispatha. All plants were associated with glyphosate-tolerant bacteria, and in the cases of Xanthosoma sagittifolium and Fimbristylis dichotoma, strains were recovered that even succeeded in growing in a medium containing 40 g glyphosate ae/L. Processes involved in carbon, nitrogen and phosphorus metabolism in the rhizosphere were affected by glyphosate exposure, and the importance of plant-microbe-substrate interactions in the elimination of glyphosate was evinced. Although all plants contributed to the removal of glyphosate, their use in phytoremediation projects will depend on the location and nature of the environmental problem to be resolved.

Recurso en línea: https://doi.org/10.1016/j.scitotenv.2021.146812
Lista(s) en las que aparece este ítem: Humedales | Agua
Etiquetas de esta biblioteca: No hay etiquetas de esta biblioteca para este título. Ingresar para agregar etiquetas.
Star ratings
    Valoración media: 0.0 (0 votos)
Existencias
Tipo de ítem Biblioteca actual Colección Signatura Estado Fecha de vencimiento Código de barras
Artículos Biblioteca Electrónica
Recursos en línea (RE) 		ECOSUR Recurso digital ECO400000060800

Disponible para usuarios de ECOSUR con su clave de acceso

Glyphosate is a systemic herbicide with an important environmental impact due to its adverse effect on non-targetorganisms. Its removal can be accomplished by wild (native) plants which, together with their associated microbiota, have acquired tolerance against glyphosate or are able to degrade it. Little is known, however, about these plants' potential for glyphosate remediation and the role that plant-microbe interactions play in this process. The objective of the present study was to evaluate plant species from locations with a history of glyphosate exposure – drainage ditches of banana plantations (Musa sp.), or riparian areas - to determine which, in combination withtheir microbiota, promote the removal of glyphosate. Five plant species were selected to evaluate their responseto inundated growing conditions and exposure to 20 mg glyphosate acid equivalent/L for 47 days. Parameters affecting plant growth and glyphosate removal were recorded. Rhizosphere bacterial strains were identified and their tolerance to different glyphosate concentrations determined. Also, the activity of 19 rhizospheric enzymes associated with the phosphorus, carbon and nitrogen cycles were analyzed. Glyphosate-treated Panicum maximum exhibited the highest removal efficiency (87%), followed by Typha domingensis and Heliconia latispatha. All plants were associated with glyphosate-tolerant bacteria, and in the cases of Xanthosoma sagittifolium and Fimbristylis dichotoma, strains were recovered that even succeeded in growing in a medium containing 40 g glyphosate ae/L. Processes involved in carbon, nitrogen and phosphorus metabolism in the rhizosphere were affected by glyphosate exposure, and the importance of plant-microbe-substrate interactions in the elimination of glyphosate was evinced. Although all plants contributed to the removal of glyphosate, their use in phytoremediation projects will depend on the location and nature of the environmental problem to be resolved. eng

Con tecnología Koha