Publication:
Use of superoxide as an electron shuttle for iron acquisition by the marine cyanobacterium Lyngbya majuscula

dc.contributor.author Rose, Andrew en_US
dc.contributor.author Salmon, Timothy en_US
dc.contributor.author Lukondeh, Tredwell en_US
dc.contributor.author Neilan, Brett en_US
dc.contributor.author Waite, David en_US
dc.date.accessioned 2021-11-25T14:16:25Z
dc.date.available 2021-11-25T14:16:25Z
dc.date.issued 2005 en_US
dc.description.abstract Reduction of iron from the ferric state to the ferrous state is one strategy employed by microorganisms in near-neutral environments to increase its biological availability. In recent years, the existence of mobile reducing agents produced by microorganisms to promote iron reduction,known as electron shuttles, has been demonstrated. Production of electron shuttles has been shown for several organisms, employing a variety of mostly organic molecules as the electron carrier. Here we show that the coastal cyanobacterium Lyngbya majuscula produces iron-reducing superoxide radicals (O-2(center dot)-) and that this facilitates increased iron uptake. We suggest that superoxide is a useful electron shuttle because it reacts rapidly and almost indiscriminately with Fe(III)-organic complexes and its precursor, dissolved oxygen, is ubiquitous in the photic zone. We further suggest that, for these reasons, the generation of superoxide by marine oxygenic photosynthetic microorganisms and its use in facilitating iron uptake may be a reasonably widespread process. en_US
dc.identifier.uri http://hdl.handle.net/1959.4/42325
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/au/ en_US
dc.source Legacy MARC en_US
dc.title Use of superoxide as an electron shuttle for iron acquisition by the marine cyanobacterium Lyngbya majuscula en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.accessRights.uri http://purl.org/coar/access_right/c_14cb
unsw.relation.faculty Engineering
unsw.relation.faculty Science
unsw.relation.ispartofissue 10 en_US
unsw.relation.ispartofjournal Environmental Science & Technology en_US
unsw.relation.ispartofpagefrompageto 3708-3715 en_US
unsw.relation.ispartofvolume 39 en_US
unsw.relation.originalPublicationAffiliation Rose, Andrew, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Salmon, Timothy, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Lukondeh, Tredwell, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Neilan, Brett, Biotechnology & Biomolecular Sciences, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Waite, David, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.school School of Civil and Environmental Engineering *
unsw.relation.school School of Biotechnology & Biomolecular Sciences *
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