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Open Life Sciences

formerly Central European Journal of Biology

Editor-in-Chief: Ratajczak, Mariusz

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IMPACT FACTOR 2016 (Open Life Sciences): 0.448

CiteScore 2017: 0.88

SCImago Journal Rank (SJR) 2017: 0.271
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ISSN
2391-5412
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Volume 7, Issue 2

Issues

Volume 10 (2015)

The impacts of heavy metals on oxidative stress and growth of spring barley

Romualdas Juknys / Giedrė Vitkauskaitė / Milda Račaitė / Jonė Venclovienė
Published Online: 2012-02-10 | DOI: https://doi.org/10.2478/s11535-012-0012-9

Abstract

Oxidative stress is accepted to play a significant role in stress symptoms, caused by different stressors in a variety of organisms. In this study seedlings of spring barley (Hordeum vulgare L.) were exposed to a wide range of copper, zinc, chromium, nickel, lead and cadmium concentrations in order to determine the relationships between heavy metals-induced oxidative stress and plant growth inhibition. All investigated heavy metals induced an essential increase in lipid peroxidation and a reduction of dry biomass along with an increase in metal concentration in the nutrient solution. A very close and statistically significant exponential relationship between lipid peroxidation and growth inhibition was detected in this study. According to the results of analysis of variance (ANOVA), the intensity of nonspecific oxidative stress is identified as the main factor of barley growth inhibition, explaining 75% of total variance. Almost 10% of growth inhibition is attributed to the specific impact of heavy metals. The most pronounced increase of malondialdehyde content and growth inhibition was observed in Cu and Cd treatments, whereas the lowest changes in observed indicators were detected after exposure to Zn and Pb.

Keywords: Heavy metals; Oxidative stress; Lipid peroxidation; Malondialdehide; Growth inhibition

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About the article

Published Online: 2012-02-10

Published in Print: 2012-04-01


Citation Information: Open Life Sciences, Volume 7, Issue 2, Pages 299–306, ISSN (Online) 2391-5412, DOI: https://doi.org/10.2478/s11535-012-0012-9.

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© 2012 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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