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Lead: Its Effects on Environment and Health

Ed. by Sigel, Astrid / Sigel, Helmut / Sigel, Roland K.O.

With contrib. by Aoki, Katsuyuki / Aschner, Michael / Cullen, Jay T. / Farkas, Etelka / Filella, Montserrat / Hauser, Peter / Klotz, Katrin / Küpper, Hendrik / Maret, Wolfgang / Stewart, Theodora J. / Stillman, Martin J. / Pecoraro, Vincent L. / Pohl, Hana R. / Tylkowski, Bartosz

Series:Metal Ions in Life Sciences 17

eBook (PDF)
Publication Date:
April 2017
Copyright year:
2017
ISBN
978-3-11-043433-0
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15. Lead Toxicity in Plants

Küpper, Hendrik

Abstract

This review looks critically at the relevance of lead (Pb2+) toxicity and proposed mechanisms of Pb2+ -induced stress in algae and higher plants. As a basis, the current main sources of Pb2+ contamination in the environment are presented, which include agriculture, industry, and road traffic. Further, bioavailability of lead is discussed as a basis for evaluating the environmental relevance of the many studies on lead toxicity that have been published in the past decades. These studies suggest three main mechanisms of toxicity of Pb2+: inhibition of photosynthesis, oxidative stress, and “genotoxicity” including DNA damage and defects in mitosis. Looking at the applied concentration ranges in these studies reveals that likely the defects in mitosis are the environmentally most relevant effects. In contrast, inhibition of photosynthetic light reactions is far less efficient with Pb2+ compared to other metal ions, so that for Pb2+ toxicity it seems environmentally not relevant. As a conclusion and outlook, a direction of future studies towards establishment of reliable concentration thresholds of the various toxic effects and their causal interconnection is suggested.

Citation Information

Hendrik Küpper (2017). 15. Lead Toxicity in Plants. In Astrid Sigel, Helmut Sigel, Roland K.O. Sigel (Eds.), Lead – Its Effects on Environment and Health (pp. 491–500). Berlin, Boston: De Gruyter. https://doi.org/10.1515/9783110434330-015

Book DOI: https://doi.org/10.1515/9783110434330

Online ISBN: 9783110434330

© 2017 Walter de Gruyter GmbH, Berlin/Munich/BostonGet Permission

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