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Ver términos de la licenciaAlmazan-Casteñada, Patsy Jackeline, et al. (2024). Fitotoxicidad y fitorremediación de un suelo contaminado con gasolina utilizando plantas de girasol asistidas por bacterias rizosféricas nativas. Revista Internacional de Contaminación Ambiental; Vol. 40, 2024; 351-362. Recuperado de https://repositorio.unam.mx/contenidos/4161050
Autor(es)
Almazan-Casteñada, Patsy Jackeline; Alarcón, Alejandro; García-Barradas, Óscar; Mendarte-Alquisira, Caliope; Ferrera-Cerrato, Ronald
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
Fitotoxicidad y fitorremediación de un suelo contaminado con gasolina utilizando plantas de girasol asistidas por bacterias rizosféricas nativas
Fecha
2024-11-21
Resumen
Phytoremediation is an alternative for cleaning contaminated soils using plants and associative microorganisms. This study evaluated the phytotoxicity and phytoremediation of a gasoline-contaminated soil by sunflower plants (Helianthus annuus L.) assisted with native rhizosphere bacteria. The research consisted of three experimental phases based on artificially gasoline-contaminated soil. The first phase evaluated the seed germination and seedling emergence under contaminated soil (0, 200, 400, 800, 1600, 2400, and 3200 mg/kg); for 20 days, seed germination and seedling tolerance were achieved at all concentrations. The second phase of the study isolated bacteria from the contaminated soil, characterized by biochemical tests related to plant growth promotion, and molecularly identified. Gasoline inhibited bacterial growth, and ten potential plant growth-promoting bacteria were isolated, which belonged to Bacillus, Streptomyces, Pseudomonas, Priestia, Massilia, and Sphingobium. The third phase consisted of a bioassay for phytoremediation of gasoline-contaminated soil (0, 1600, and 3200 mg/kg) by inoculating sunflower plants with the ten bacteria obtained from phase 2 as a bacterial consortium. After 60 days, despite not having influenced plant growth, bacterial inoculation significantly diminished the soil contaminant (~50 % removal). The inoculation of the sunflower plants with ten native bacteria reduced the gasoline-contamination in soil.
Tema
Helianthus; hidrocarburo del petróleo; biorremediación; bioaumentación; Helianthus; petroleum hydrocarbon; bioremediation; bioaugmentation
Idioma
spa
ISSN
ISSN impreso: 0188-4999
