Caruana, AMN and Steinke, Michael and Turner, SM and Malin, Gill (2012) Concentrations of dimethylsulphoniopropionate and activities of dimethylsulphide-producing enzymes in batch cultures of nine dinoflagellate species. Biogeochemistry, 110 (1-3). pp. 87-107. DOI https://doi.org/10.1007/s10533-012-9705-4
Caruana, AMN and Steinke, Michael and Turner, SM and Malin, Gill (2012) Concentrations of dimethylsulphoniopropionate and activities of dimethylsulphide-producing enzymes in batch cultures of nine dinoflagellate species. Biogeochemistry, 110 (1-3). pp. 87-107. DOI https://doi.org/10.1007/s10533-012-9705-4
Caruana, AMN and Steinke, Michael and Turner, SM and Malin, Gill (2012) Concentrations of dimethylsulphoniopropionate and activities of dimethylsulphide-producing enzymes in batch cultures of nine dinoflagellate species. Biogeochemistry, 110 (1-3). pp. 87-107. DOI https://doi.org/10.1007/s10533-012-9705-4
Abstract
Dinoflagellates are recognised as one of the major phytoplankton groups that produce dimethylsulphoniopropionate (DMSP), the precursor of the marine trace gas dimethylsulphide (DMS) which has climate-cooling potential. To improve the prospects for including dinoflagellates in global climate models that include DMSP-related processes, we increased the data base for this group by measuring DMSP, DMS-producing enzyme activity (DPEA), carbon, nitrogen and Chl a in nine clonal dinoflagellate cultures (1 heterotrophic and 8 phototrophic strains). Growth rates ranged from 0.11 to 1.92 day−1 with the highest value being for the heterotroph Crypthecodinium cohnii. Overall, we observed two orders of magnitude variability in DMSP content (11–364 mM) and detected DPEA in five of the nine strains (0.61–59.73 fmol cell−1 h−1). Cell volume varied between 454 and 18,439 μm3 and whilst C and N content were proportional to the cell volume, DMSP content was not. The first DMSP measurements for a dinoflagellate from Antarctic waters and a species with diatom-like plastids are included. Lower DMSP concentrations were found in three small athecate species and a dinoflagellate with haptophyte-like plastids. The highest concentrations and production rates tended to be in globally distributed dinoflagellates and the heterotroph. Photosynthetic species that are distributed in temperate to tropical waters showed low DMSP concentrations and production rates and the polar representative showed moderate concentration and a low production rate. Estuarine species had the lowest concentrations and production rates. These data should help refine the inclusion of dinoflagellates as a functional group in future global climate models.
Item Type: | Article |
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Additional Information: | Published proceedings: Biogeochemistry |
Uncontrolled Keywords: | Batch cultures; Carbon; Dinoflagellates; DMSP; DMS-producing enzymes; Nitrogen |
Subjects: | Q Science > QH Natural history > QH301 Biology |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Life Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 15 Feb 2013 16:57 |
Last Modified: | 16 May 2024 16:13 |
URI: | http://repository.essex.ac.uk/id/eprint/5651 |
Available files
Filename: Caruana et al 9-dinos Biogeochem ONLINE FIRST 2012.pdf