Trichodesmium's strategies to alleviate phosphorus limitation in the future acidified oceans ...

• Main Authors: Spungin, D, Berman-Frank, I, Levitan, Orly
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Bacteria; Bottles or small containers/Aquaria <20 L; Cyanobacteria; Laboratory experiment; Laboratory strains; Macro-nutrients; Not applicable; Other metabolic rates; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Trichodesmium erythraeum; Species; Partial pressure of carbon dioxide water at sea surface temperature wet air; Phosphate; Incubation duration; Glutamine synthetase biosynthetic activity per cell; Glutamine synthetase biosynthetic activity, standard deviation; Carbon uptake rate per cell; Carbon uptake rate, standard deviation; Adenosine 5-Triphosphate, per cell; Adenosine 5-Triphosphate, standard deviation; Glutamine synthetase transferase/biosynthetic activity ratio; Glutamine synthetase transferase/biosynthetic activity ratio, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; pH; pH, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Salinity; Temperature, water; Growth rate; Growth rate, standard deviation; Length; Length, standard deviation; Chlorophyll a per cell; Chlorophyll a, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Carbon/Phosphorus ratio; Carbon/Phosphorus ratio, standard deviation; Nitrogen/Phosphorus ratio; Nitrogen/Phosphorus ratio, standard deviation; Particulate organic phosphorus per cell; Particulate organic phosphorus, standard deviation; Particulate organic nitrogen per cell; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.833817; https://doi.pangaea.de/10.1594/PANGAEA.833817

Global warming may exacerbate inorganic nutrient limitation, including phosphorus (P), in the surface-waters of tropical oceans that are home to extensive blooms of the marine diazotrophic cyanobacterium, Trichodesmium. We examined the combined effects of P limitation and pCO2, forecast under ocean acidification scenarios, on Trichodesmium erythraeum IMS101 cultures. We measured nitrogen acquisition, glutamine synthetase activity, C uptake rates, intracellular Adenosine Triphosphate (ATP) concentration and the pool sizes of related key proteins. Here, we present data supporting the idea that cellular energy re-allocation enables the higher growth and N2 fixation rates detected in Trichodesmium cultured under high pCO2. This is reflected in altered protein abundance and metabolic pools. Also modified are particulate organic carbon and nitrogen production rates, enzymatic activities, and cellular ATP concentrations. We suggest that adjusting these cellular pathways to changing environmental conditions enables ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2014-07-07. ...