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Possible roles of reactive chlorine II: assessing biotic chlorination as a way for organisms to handle oxygen stress
Lund University, Sweden .
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
University of British Columbia, Canada .
2013 (English)In: Environmental Microbiology, ISSN 1462-2912, E-ISSN 1462-2920, Vol. 15, no 4, 991-1000 p.Article, review/survey (Refereed) Published
Abstract [en]

Natural formation of organically bound chlorine is extensive in many environments. The enzymes associated with the formation of chlorinated organic matter are produced by a large variety of organisms. Little is known about the ecological role of the process, the key question being: why do microorganisms promote chlorination of organic matter? In a recent paper we discuss whether organic matter chlorination may be a result of antagonistic interactions among microorganisms. In the present paper we evaluate whether extracellular microbial formation of reactive chlorine may be used as a defence against oxygen stress, and we discuss whether this process is likely to contribute to the formation of chlorinated organic matter. Our analysis suggests that periodic exposure to elevated concentrations of reactive oxygen species is a common denominator among the multitude of organisms that are able to enzymatically catalyse formation of reactive chlorine. There is also some evidence suggesting that the production of such enzymes in algae and bacteria is induced by oxygen stress. The relative contribution from this process to the extensive formation of chlorinated organic matter in natural environments remains to be empirically assessed.

Place, publisher, year, edition, pages
Wiley-Blackwell , 2013. Vol. 15, no 4, 991-1000 p.
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:liu:diva-92607DOI: 10.1111/j.1462-2920.2012.02807.xISI: 000317287200002OAI: oai:DiVA.org:liu-92607DiVA: diva2:621318
Note

Funding Agencies|Swedish Research Council||Natural Sciences and Engineering Research Council of Canada||Canada Foundation for Innovation||

Available from: 2013-05-14 Created: 2013-05-14 Last updated: 2017-12-06

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Bastviken, David

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