Seawater carbonate chemistry and motility of flagellated microalgae ...

• Main Authors: Wang, Yitao, Fan, Xiao, Gao, Guang, Beardall, John, Inaba, Kazuo, Hall-Spencer, Jason M, Xu, Dong, Zhang, Xiaowen, Han, Wentao, McMinn, Andrew, Ye, Naihao
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Behaviour; Bottles or small containers/Aquaria <20 L; Chlamydomonas reinhardtii; Chlorophyta; Dunaliella salina; Laboratory experiment; Laboratory strains; Microglena sp.; Not applicable; Pelagos; Phytoplankton; Plantae; Respiration; Single species; Type; Species; Registration number of species; Uniform resource locator/link to reference; Figure; Partial pressure of carbon dioxide water at sea surface temperature wet air; Move velocity; Percentage; Gene name; Gene expression; Calcium, flux; Irradiance; Oxygen evolution, per chlorophyll a; Daily vertical migration; Time in days; Temperature, water; Salinity; pH; pH, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Alkalinity, total; Alkalinity, total, standard error; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbon dioxide; Carbon dioxide, standard error; Carbonate ion; Carbonate ion, standard error; Bicarbonate ion; Bicarbonate ion, standard error; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Potentiometric; Calculated using CO2SYS; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.925549; https://doi.pangaea.de/10.1594/PANGAEA.925549

Motility plays a critical role in algal survival and reproduction, with implications for aquatic ecosystem stability. However, the effect of elevated CO2 on marine, brackish and freshwater algal motility is unclear. Here we show, using laboratory microscale and field mesoscale experiments, that three typical phytoplankton species had decreased motility with increased CO2. Polar marine Microglena sp., euryhaline Dunaliella salina and freshwater Chlamydomonas reinhardtii were grown under different CO2 concentrations for 5 years. Long-term acclimated Microglena sp. showed substantially decreased photo-responses in all treatments, with a photophobic reaction affecting intracellular calcium concentration. Genes regulating flagellar movement were significantly downregulated (P < 0.05), alongside a significant increase in gene expression for flagellar shedding (P < 0.05). D. salina and C. reinhardtii showed similar results, suggesting that motility changes are common across flagellated species. As the ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2020) 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 by seacarb is 2020-12-08. ...