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Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry

Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry

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KÜPPER, Frithjof C., Lucy J. CARPENTER, Gordon B. MCFIGGANS, Carl J. PALMER, Tim J. WAITE, Eva-Maria BONEBERG, Sonja WOITSCH, Markus WEILLER, Peter M. H. KRONECK, Martin C. FEITERS, 2008. Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry. In: Proceedings of the National Academy of Sciences of the United States of America : PNAS. 105(19), pp. 6954-6958. ISSN 0027-8424. eISSN 1091-6490

@article{Kupper2008-05-13Iodid-38948, title={Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry}, year={2008}, doi={10.1073/pnas.0709959105}, number={19}, volume={105}, issn={0027-8424}, journal={Proceedings of the National Academy of Sciences of the United States of America : PNAS}, pages={6954--6958}, author={Küpper, Frithjof C. and Carpenter, Lucy J. and McFiggans, Gordon B. and Palmer, Carl J. and Waite, Tim J. and Boneberg, Eva-Maria and Woitsch, Sonja and Weiller, Markus and Kroneck, Peter M. H. and Feiters, Martin C.} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/38948"> <dc:contributor>Waite, Tim J.</dc:contributor> <dc:creator>Waite, Tim J.</dc:creator> <dc:contributor>Carpenter, Lucy J.</dc:contributor> <dcterms:issued>2008-05-13</dcterms:issued> <dc:creator>Feiters, Martin C.</dc:creator> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-05-17T13:37:40Z</dc:date> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/38948"/> <dc:creator>McFiggans, Gordon B.</dc:creator> <dc:contributor>McFiggans, Gordon B.</dc:contributor> <dc:creator>Kroneck, Peter M. H.</dc:creator> <dc:creator>Küpper, Frithjof C.</dc:creator> <dc:creator>Weiller, Markus</dc:creator> <dcterms:abstract xml:lang="eng">Brown algae of the Laminariales (kelps) are the strongest accumulators of iodine among living organisms. They represent a major pump in the global biogeochemical cycle of iodine and, in particular, the major source of iodocarbons in the coastal atmosphere. Nevertheless, the chemical state and biological significance of accumulated iodine have remained unknown to this date. Using x-ray absorption spectroscopy, we show that the accumulated form is iodide, which readily scavenges a variety of reactive oxygen species (ROS). We propose here that its biological role is that of an inorganic antioxidant, the first to be described in a living system. Upon oxidative stress, iodide is effluxed. On the thallus surface and in the apoplast, iodide detoxifies both aqueous oxidants and ozone, the latter resulting in the release of high levels of molecular iodine and the consequent formation of hygroscopic iodine oxides leading to particles, which are precursors to cloud condensation nuclei. In a complementary set of experiments using a heterologous system, iodide was found to effectively scavenge ROS in human blood cells.</dcterms:abstract> <dc:contributor>Kroneck, Peter M. H.</dc:contributor> <dc:creator>Woitsch, Sonja</dc:creator> <dc:creator>Carpenter, Lucy J.</dc:creator> <dc:creator>Palmer, Carl J.</dc:creator> <dc:contributor>Boneberg, Eva-Maria</dc:contributor> <dc:contributor>Feiters, Martin C.</dc:contributor> <dc:creator>Boneberg, Eva-Maria</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-05-17T13:37:40Z</dcterms:available> <dc:contributor>Palmer, Carl J.</dc:contributor> <dc:contributor>Küpper, Frithjof C.</dc:contributor> <dc:contributor>Woitsch, Sonja</dc:contributor> <dc:language>eng</dc:language> <dcterms:title>Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry</dcterms:title> <dc:contributor>Weiller, Markus</dc:contributor> </rdf:Description> </rdf:RDF>

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