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Lead: Its Effects on Environment and Health
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SYSNO ASEP 0486906 Document Type M - Monograph Chapter R&D Document Type Monograph Chapter Title Lead Toxicity in Plants Author(s) Küpper, Hendrik (BC-A) RID, ORCID Source Title Lead: Its Effects on Environment and Health, 17. - Berlin : Walter de Gruyter GmbH, 2017 / Sigel Astrid ; Sigel Hekmut ; Siegel Roland K.O. - ISBN 9783110434330 Pages s. 491-500 Number of pages 10 s. Number of pages 556 Publication form Online - E Language eng - English Country DE - Germany Keywords Defects in mitosis ; Mutagenic effect ; Oxidative stress ; Photosynthesis Subject RIV CE - Biochemistry OECD category Biochemistry and molecular biology R&D Projects EF15_003/0000336 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support BC-A - RVO:60077344 EID SCOPUS 85021267230 DOI 10.1515/9783110434330-015 Annotation 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. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2018
Number of the records: 1