Irradiance-mediated dimethylsulphoniopropionate (DMSP) responses of red coralline algae

Rix, L.N., Burdett, H.L. and Kamenos, N. (2012) Irradiance-mediated dimethylsulphoniopropionate (DMSP) responses of red coralline algae. Estuarine, Coastal and Shelf Science, 96, pp. 268-272. (doi:10.1016/j.ecss.2011.11.022)

Rix, L.N., Burdett, H.L. and Kamenos, N. (2012) Irradiance-mediated dimethylsulphoniopropionate (DMSP) responses of red coralline algae. Estuarine, Coastal and Shelf Science, 96, pp. 268-272. (doi:10.1016/j.ecss.2011.11.022)

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Abstract

Red coralline algae produce significant quantities of dimethylsulphoniopropionate (DMSP), whose breakdown products include the important climate gas dimethylsulphide (DMS) but little is known about how environmental factors influence this DMS(P) production. The effect of photosynthetically active radiation (PAR) on intracellular DMS(P) concentrations in the red coralline algae Lithothamnion glaciale was investigated using short (30 min) and longer-term (up to 507 h) acclimatory responses and control and high-PAR light regimes. Longer-term acclimatory intracellular DMS(P) concentrations were significantly reduced following exposure to high-PAR (220e250 mmol m<sup>-2</sup> s<sup>-1</sup>). No short-term acclimatory effects were observed. We conclude that while DMS(P) content in L. glaciale does respond to changes in irradiance, the effect takes place over hours e days rather than minutes, suggesting a continued turnover of DMS(P) to combat oxidative stress induced by prolonged high-PAR exposure. Immediate short-term acclimatory responses do not appear to occur.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kamenos, Dr Nicholas
Authors: Rix, L.N., Burdett, H.L., and Kamenos, N.
College/School:College of Science and Engineering > School of Geographical and Earth Sciences > Earth Sciences
Journal Name:Estuarine, Coastal and Shelf Science
ISSN:0272-7714
Published Online:18 November 2011

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