Journal
ESTUARINE COASTAL AND SHELF SCIENCE
Volume 82, Issue 3, Pages 406-414Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2009.02.004
Keywords
iodine; iodide; seaweeds; Laminaria sp.; Fucus sp.; biological stress
Categories
Funding
- UK Natural Environment Research Council (NERC) [NER/S/A/2003/11224, GR3/9947, NE/B501039/1, NER/G/S/2003/0024]
- Studienstiftung des deutschen Volkes (German Academic Merit Foundation)
- European Commission
- Natural Environment Research Council [NE/D006538/1, NE/D006546/1, NE/B501039/1, dml010007] Funding Source: researchfish
- NERC [NE/D006538/1, dml010007, NE/D006546/1] Funding Source: UKRI
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A number of field and laboratory studies on the impact of marine macroalgae on dissolved inorganic iodine speciation are presented. Within tidally isolated rock pools, the brown macroalga Fucus serratus was found to both release stored iodide and to facilitate the reduction of iodate to iodide. In contrast, no discernible changes in iodine speciation were observed in rock pools containing green macroalgae of the genus Ulva. Incubation experiments confirmed that the macroalgae Laminaria digitata, E serratus and Kallymenia antarctica release iodide, though the rate of release varied between species and between specimens of the same species. Application of oxidative stress by treatment with cell wall derived oligoguluronate elicitors increased the efflux of iodide by L digitata approximately 20-fold. The release of iodide by macroalgae may impact upon the formation of volatile iodine species (molecular iodine and iodocarbons) that are of importance in the coastal atmosphere. (C) 2009 Elsevier Ltd. All rights reserved.
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