Artículo
Deepening the knowledge on the removal of Cr(VI) by L. minuta Kunth: removal efficiency and mechanisms, lipid signaling pathways, antioxidant response, and toxic effects
Fernández, María Inés
; Paisio, Cintia Elizabeth
; González, Paola Solange
; Perotti, Romina
; Meringer, Verónica; Villasuso, Ana Laura
; Agostini, Elizabeth
Fecha de publicación:
02/2020
Editorial:
Springer Heidelberg
Revista:
Environmental Science and Pollution Research
ISSN:
0944-1344
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Lemna minuta Kunth was used to remove Cr(VI) from aqueous solutions, and some of the mechanisms involved in this process were analyzed. In addition, the cellular signaling mediated by phospholipase D activity as well as antioxidant responses was also evaluated during the process. Cr(VI) removal efficiencies were 40% for 0.5 mg/L, after 24 h, and up to 18% at metal concentrations as high as 5 mg/L. Removal mechanisms displayed by these macrophytes include bioadsorption to cell surfaces and, to a greater extent, Cr internalization and bioaccumulation within cells. Inside of them, Cr(VI) was reduced to Cr(III), a less toxic form of this metal. At the first hours of Cr(VI) exposure, plants were able to sense chromium, activating membrane signal transduction pathways mediated by phospholipase D and phosphatidic acid. Moreover, an increase in the activity of antioxidant enzymes such as superoxide dismutases and peroxidases was observed in the same time. These and other components of the antioxidant defense system would help to reduce the stress generated by the metal. The toxicity of the products formed during the removal process was assessed through Lactuca sativa L. and AMPHIAGU test. It was evidenced that Cr(VI) phytoremediation process by L. minuta plants did not generate acute toxicity neither for L. sativa seeds nor for embryos of Rhinella arenarum (Hensel, 1876). Thus, L. minuta plants could be considered as valuable species for the treatment of waters contaminated with Cr(VI).
Palabras clave:
BIOCHEMICAL RESPONSES
,
CHROMIUM
,
MACROPHYTES
,
PHYTOREMEDIATION
,
REMOVAL
,
TOXICITY
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos (INBIAS)
Articulos de INSTITUTO DE BIOTECNOLOGIA AMBIENTAL Y SALUD
Articulos de INSTITUTO DE BIOTECNOLOGIA AMBIENTAL Y SALUD
Citación
Fernández, María Inés; Paisio, Cintia Elizabeth; González, Paola Solange; Perotti, Romina; Meringer, Verónica; et al.; Deepening the knowledge on the removal of Cr(VI) by L. minuta Kunth: removal efficiency and mechanisms, lipid signaling pathways, antioxidant response, and toxic effects; Springer Heidelberg; Environmental Science and Pollution Research; 27; 13; 2-2020; 14567-14580
Compartir
Altmétricas