Título

Isolation and characterization of mercury resistant trichoderma strains from soil with high levels of mercury and its effects on Arabidopsis thaliana mercury uptake

Autor

JOSE LUIS HERNANDEZ FLORES

JOSE GERARDO BERNAL MELO

ANDRES CRUZ HERNANDEZ

MIGUEL ANGEL RAMOS LOPEZ

CARLOS SALDAÑA GUTIERREZ

SERGIO DE JESUS ROMERO GOMEZ

VICTOR PEREZ MORENO

ROSA PAULINA CALVILLO MEDINA

JOSE HUMBERTO VALENZUELA SOTO

Sergio Pacheco Hernández

George H. Jones

J Sergio Casas Flores

JUAN CAMPOS GUILLEN

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Identificador alterno

doi: https://doi.org/10.4236/aim.2018.87040

Materias

Volatilization - (AUTOR) Mercury - (AUTOR) Trichoderma - (AUTOR) Soil Bioremediation - (AUTOR) BIOLOGÍA Y QUÍMICA - (CTI) CIENCIAS DE LA VIDA - (CTI) MICROBIOLOGÍA - (CTI) MICROBIOLOGÍA - (CTI)

Resumen o descripción

"Traditional mining activities are usually correlated with high levels of soil pollution, which is a major environmental concern. Extensive mining activities have taken place in the San Joaquin region in the State of Querétaro, México resulting in high levels of mercury soil pollution (up to 1532 ± 300 mg/kg). We isolated mercury-resistant fungal strains from the San Joaquin region soils and identified them through morphologic characteristics and ITS rDNA region sequence analysis. We determined that fungi isolated belong to the genus Trichoderma. All the isolates selected showed the ability to catalyze the volatilization of Hg. For air sampling, an active sampling device was constructed and using acid KMnO4 as an absorbent, the concentration of mercury in solution was determined through the cold vapor atomic absorption method. The results show mercury volatilization from the fungal species assay, with a maximum of 213.04 ± 32.6 µg/m3 while mycelium accumulation ranged from less than 17.5 ± 2.9 to 20.0 ± 3.4 µg/g. The fungal isolates were also evaluated for their ability to reduce mercury uptake in Arabidopsis thaliana. These observations suggest the utility of Trichoderma for the mobilization of mercury in those contaminated soils."

Editor

Scientific Research Publishing Inc

Fecha de publicación

2018

Tipo de publicación

Artículo

Versión de la publicación

Versión publicada

Recurso de información

http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/1924

Formato

application/pdf

Sugerencia de citación

Hernández-Flores, J.L., Melo, J.G.B., Hernández, A.C., López, M.A.R., Gutiérrez, C.S., Gomez, S.R., Moreno, V.P., Medina, R.P.C., Soto, J.H.V., Hernández, S.P., Jones, G.H., Flores, S.C. and Campos-Guillen, J. (2018) Isolation and Characterization of Mercury Resistant Trichoderma Strains from Soil with High Levels of Mercury and Its Effects on Arabidopsis thaliana Mercury Uptake. Advances in Microbiology, 8, 600-613. https://doi.org/10.4236/aim.2018.87040

Repositorio Orígen

Repositorio IPICYT

Descargas

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