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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.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Del-Toro-Sánchez CL,Zurita F,Gutiérrez-Lomelí M,Solis-Sánchez B,Wence-Chávez L,Rodríguez-Sahagún A,Castellanos-Hernández OA,Vázquez-Armenta G,Siller-López F

doi

10.1016/j.ecoenv.2013.04.024

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

67-72

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(13)00167-X

journal_volume

94

pub_type

杂志文章

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