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Effect of arsenic-phosphorus interaction on arsenic-induced oxidative stress in chickpea plants

Gunes, A., Pilbeam, D. and Inal, A. (2009) Effect of arsenic-phosphorus interaction on arsenic-induced oxidative stress in chickpea plants. Plant and Soil, 314 (1-2). pp. 211-220. ISSN 1573-5036

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Arsenic-induced oxidative stress in chickpea was investigated under glasshouse conditions in response to application of arsenic and phosphorus. Three levels of arsenic (0, 30 and 60 mg kg−1) and four levels of P (50, 100, 200, and 400 mg kg−1) were applied to soil-grown plants. Increasing levels of both arsenic and P significantly increased arsenic concentrations in the plants. Shoot growth was reduced with increased arsenic supply regardless of applied P levels. Applied arsenic induced oxidative stress in the plants, and the concentrations of H2O2 and lipid peroxidation were increased. Activity of superoxide dismutase (SOD) and concentrations of non-enzymatic antioxidants decreased in these plants, but activities of catalase (CAT) and ascorbate peroxidase (APX) were significantly increased under arsenic phytotoxicity. Increased supply of P decreased activities of CAT and APX, and decreased concentrations of non-enzymatic antioxidants, but the high-P plants had lowered lipid peroxidation. It can be concluded that P increased uptake of arsenic from the soil, probably by making it more available, but although plant growth was inhibited by arsenic the P may have partially protected the membranes from arsenic-induced oxidative stress.

Item Type: Article
Copyright, Publisher and Additional Information: © 2009 Springer. This is an author produced version of a paper published in Plant and Soil. Uploaded in accordance with the publisher's self archiving policy.
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Biological Sciences (Leeds) > Institute of Integrative and Comparative Biology (Leeds)
Depositing User: Sherpa Assistant
Date Deposited: 15 Jan 2009 10:07
Last Modified: 08 Feb 2013 16:57
Published Version: http://dx.doi.org/10.1007/s11104-008-9719-9
Status: Published
Publisher: Springer
Identification Number: 10.1007/s11104-008-9719-9
URI: http://eprints.whiterose.ac.uk/id/eprint/5378

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