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dc.contributor.author
Diaz, Pablo
dc.contributor.author
Young, Brian Jonathan
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dc.contributor.author
Tapia Balmaceda, Raúl Esteban
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dc.contributor.author
Roqueiro, Gonzalo
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dc.contributor.author
Heredia, Belén
dc.date.available
2022-12-01T18:35:11Z
dc.date.issued
2021
dc.identifier.citation
Acute toxicity of soils contaminated with waste from an abandoned gold mine on seeds of Prosopis flexuosa and Larrea cuneifolia; Society of Environmental Toxicology and Chemistry Latin America 14th Biennial Meeting; Valdivia; Chile; 2021; 93-93
dc.identifier.uri
http://hdl.handle.net/11336/179899
dc.description.abstract
The presence of metal(loid)s in soil causes toxicity in plants such as physiological disorders, and alterations in growth and development. The objective of this study was to evaluate the acute toxicity of soils contaminated with mining waste on seeds of Prosopis flexuosa (Pf) and Larrea cuneifolia (Lc), two native species from the Monte region (La Planta, San Juan, Argentina). Seeds were collected in the surroundings of La Planta and soil samples were taken in two sites: contaminated (S1) and reference sites (S2). Seeds were exposed to 6 increasing concentrations of soil mixtures from Site 1 and 2: 0, 10, 25, 50, 70, and 100% (v/v), where 0 corresponds to S2 soil and 100% to S1 soil. Experimental unit consisted of 20 seeds placed on wet soil into a Petri dish, reaching a total of 5 repetitions per treatment. A pre-germination treatment was applied to the seeds to ensure the seedling emergence. Toxicity test was carried out in a germination chamber in darkness at 25±2 °C. Due to differences in germination time of each species, exposure of Pf and Lc lasted 7 and 15 d, respectively. Mean germination time (MGT), germination index (GI), relative growth index (RGI) and IC50 of root (r) and hypocotyl (h) length were estimated. The concentration of the main metal(loid)s in soils were: S1) As=6608 mg kg-1 ; Zn=10892 mg kg-1 ; Cu=260 mg kg-1 ; Cd=90 mg kg-1 , and S2): Zn=46 mg kg-1 ; As, Cu and Cd were not detected. For Pf a significant increase in MGT was observed from treatment 70%, whereas a significant decrease in RGIr and RGIh, and GI were observed from 50% S1 concentration (p< 0.001). IC50r and IC50h were estimated in 21.1 and 40.3%, respectively. For Lc, seed germination inhibition of 100% was observed from 70% S1 concentration. Statistical differences between the values of RGIr, RGIh, and GI for remaining treatments were obtained (p< 0.001), while MGT showed no significant differences. The strongest inhibition was observed in 50% S1 concentration. IC50r and IC50h were estimated in 27.7% and 15.1%, respectively. The values of the toxicity endpoints and the phytotoxicity indexes showed that these native species are more tolerant to contaminated soil of La Planta than horticultural species evaluated in previous studies (IC50r < 1% S1 concentration). In future studies, chronic effects should be evaluated to determine the underlying physiological mechanisms of the metal(loid) tolerance in Pf and Lc.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society of Environmental Toxicology and Chemistry
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
TERRESTRIAL TOXICOLOGY
dc.subject
ECOLOGY
dc.subject
STRESS RESPONSE
dc.subject
SOILS CONTAMINATED
dc.subject.classification
Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Acute toxicity of soils contaminated with waste from an abandoned gold mine on seeds of Prosopis flexuosa and Larrea cuneifolia
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2022-09-14T16:09:18Z
dc.journal.pagination
93-93
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Diaz, Pablo. Universidad Nacional de San Juan. Facultad de Ingeniería; Argentina
dc.description.fil
Fil: Young, Brian Jonathan. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Microbiología y Zoología Agrícola; Argentina
dc.description.fil
Fil: Tapia Balmaceda, Raúl Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza - San Juan. Estación Experimental Agropecuaria San Juan; Argentina
dc.description.fil
Fil: Roqueiro, Gonzalo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza - San Juan. Estación Experimental Agropecuaria San Juan; Argentina
dc.description.fil
Fil: Heredia, Belén. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Mendoza - San Juan. Estación Experimental Agropecuaria San Juan; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://sla2021.setac.org/es/
dc.conicet.rol
Autor
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Autor
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Autor
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Autor
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Autor
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dc.coverage
Internacional
dc.type.subtype
Reunión
dc.description.nombreEvento
Society of Environmental Toxicology and Chemistry Latin America 14th Biennial Meeting
dc.date.evento
2021-09-26
dc.description.ciudadEvento
Valdivia
dc.description.paisEvento
Chile
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dc.type.publicacion
Book
dc.description.institucionOrganizadora
Society of Environmental Toxicology and Chemistry
dc.source.libro
Society of Environmental Toxicology and Chemistry Latin America 14th Biennial Meeting: Abstract Book
dc.date.eventoHasta
2021-09-29
dc.type
Reunión
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