title: Modulation of antioxidant defense system after long term arsenic exposure in Zantedeschia aethiopica and Anemopsis californica.
abstract: Zantedeschia aethiopica (calla lily) and Anemopsis californica (yerba mansa) are plant species capable of accumulating arsenic (As) and therefore proposed as phytoremediation for removal of As from drinking water. The effects of a continuous 6 month As exposure (34±11 μg/L) from local contaminated groundwater on the antioxidant response of Z. aethiopica and A. californica were evaluated in leaves and stems of the plants bimonthly in a subsurface flow constructed wetland. As increased the activities of the antioxidant enzymes ascorbate peroxidase, glutathione reductase and catalase where higher levels were observed in Z. aethiopica than A. californica. No significant differences were detected on lipid peroxidation levels or antioxidant capacity evaluated by ORAC and DPPH assays or total phenol contents in any part of the plant, although in general the leaves of both plants showed the best antioxidant defense against the metal. In conclusion, Z. aethiopica and A. californica were able to cope to As through induction of a more sensitive enzymatic antioxidant response mechanism.
authors.affiliation: Centro Universitario de la Ciénega, Universidad de Guadalajara, Ocotlán, Jalisco, Mexico.
authors.forename: Carmen Lizette
authors.initials: CL
authors.lastname: Del-Toro-Sánchez
authors.forename: Florentina
authors.initials: F
authors.lastname: Zurita
authors.forename: Melesio
authors.initials: M
authors.lastname: Gutiérrez-Lomelí
authors.forename: Brenda
authors.initials: B
authors.lastname: Solis-Sánchez
authors.forename: Laura
authors.initials: L
authors.lastname: Wence-Chávez
authors.forename: Araceli
authors.initials: A
authors.lastname: Rodríguez-Sahagún
authors.forename: Osvaldo A
authors.initials: OA
authors.lastname: Castellanos-Hernández
authors.forename: Gabriela
authors.initials: G
authors.lastname: Vázquez-Armenta
authors.forename: Fernando
authors.initials: F
authors.lastname: Siller-López
mesh_terms: D001151:Arsenic / Q000633:toxicity*; D060387:Ascorbate Peroxidases / Q000378:metabolism; D001673:Biodegradation, Environmental; D002374:Catalase / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D005980:Glutathione Reductase / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D010636:Phenols / Q000378:metabolism; D018515:Plant Leaves / Q000378:metabolism; D032134:Saururaceae / Q000187:drug effects* / Q000378:metabolism; D012989:Soil Pollutants / Q000633:toxicity*; D031064:Zantedeschia / Q000187:drug effects* / Q000378:metabolism
chemical_list: D010636:Phenols; D012989:Soil Pollutants; D060387:Ascorbate Peroxidases; D002374:Catalase; D005980:Glutathione Reductase; D001151:Arsenic