Seawater carbonate chemistry and Emiliania huxleyi biological processes during experiments, 2010
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2010
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| _version_ | 1867170912447496192 |
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| author | Guan, WanChun Gao, Kunshan |
| author_facet | Guan, WanChun Gao, Kunshan |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The calcifying phytoplankton species, coccolithophores, have their calcified coccoliths around the cells, however, their physiological roles are still unknown. Here, we hypothesized that the coccoliths may play a certain role in reducing solar UV radiation (UVR, 280-400 nm) and protect the cells from being harmed. Cells of Emiliania huxleyi with different thicknesses of the coccoliths were obtained by culturing them at different levels of dissolved inorganic carbon and their photophysiological responses to UVR were investigated. Although increased dissolved inorganic carbon decreased the specific growth rate, the increased coccolith thickness significantly ameliorated the photoinhibition of PSII photochemical efficiency caused by UVR. Increase by 91% in the coccolith thickness led to 35% increase of the PSII yield and 22% decrease of the photoinhibition of the effective quantum yield by UVR. The coccolith cover reduced more UVA (320-400 nm) than UVB (280-315 nm), leading to less inhibition per energy at the UV-A band. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_758212 |
| institution | PANGAEA |
| language | en |
| publishDate | 2010 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and Emiliania huxleyi biological processes during experiments, 2010 Guan, WanChun Gao, Kunshan Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Calcite saturation state; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, particulate, per cell; Carbon, inorganic, particulate, per cell, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Effective quantum yield; Effective quantum yield, standard error; Emiliania huxleyi; Emiliania huxleyi, cells < 5 µm; Emiliania huxleyi, cells >9 µm; Emiliania huxleyi, cells 5-7 µm; Emiliania huxleyi, cells 8-9 µm; Emiliania huxleyi, cell size, forward scatter; Emiliania huxleyi, cell size, forward scatter, stadard deviation; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Flow cytometry; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Growth rate, standard deviation; Haptophyta; Laboratory experiment; Laboratory strains; Light; Light:Dark cycle; Measured; Microscopy; Not applicable; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, NBS scale; pH, total scale; Phytoplankton; Primary production/Photosynthesis; Pulse Amplitude Modulated fluorometer (Diving-PAM, Walz); Salinity; Single species; Steemann-Nielsen (1952) use of 14C for measuring org. prod. (J Conseil 18:117); Temperature, water; Ultraviolet radiation-induced inhibition of photosynthesis; Ultraviolet radiation-induced inhibition of photosynthesis, standard deviation The calcifying phytoplankton species, coccolithophores, have their calcified coccoliths around the cells, however, their physiological roles are still unknown. Here, we hypothesized that the coccoliths may play a certain role in reducing solar UV radiation (UVR, 280-400 nm) and protect the cells from being harmed. Cells of Emiliania huxleyi with different thicknesses of the coccoliths were obtained by culturing them at different levels of dissolved inorganic carbon and their photophysiological responses to UVR were investigated. Although increased dissolved inorganic carbon decreased the specific growth rate, the increased coccolith thickness significantly ameliorated the photoinhibition of PSII photochemical efficiency caused by UVR. Increase by 91% in the coccolith thickness led to 35% increase of the PSII yield and 22% decrease of the photoinhibition of the effective quantum yield by UVR. The coccolith cover reduced more UVA (320-400 nm) than UVB (280-315 nm), leading to less inhibition per energy at the UV-A band. |
| title | Seawater carbonate chemistry and Emiliania huxleyi biological processes during experiments, 2010 |
| topic | Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Calcite saturation state; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, particulate, per cell; Carbon, inorganic, particulate, per cell, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Effective quantum yield; Effective quantum yield, standard error; Emiliania huxleyi; Emiliania huxleyi, cells < 5 µm; Emiliania huxleyi, cells >9 µm; Emiliania huxleyi, cells 5-7 µm; Emiliania huxleyi, cells 8-9 µm; Emiliania huxleyi, cell size, forward scatter; Emiliania huxleyi, cell size, forward scatter, stadard deviation; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Flow cytometry; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Growth rate, standard deviation; Haptophyta; Laboratory experiment; Laboratory strains; Light; Light:Dark cycle; Measured; Microscopy; Not applicable; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, NBS scale; pH, total scale; Phytoplankton; Primary production/Photosynthesis; Pulse Amplitude Modulated fluorometer (Diving-PAM, Walz); Salinity; Single species; Steemann-Nielsen (1952) use of 14C for measuring org. prod. (J Conseil 18:117); Temperature, water; Ultraviolet radiation-induced inhibition of photosynthesis; Ultraviolet radiation-induced inhibition of photosynthesis, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.758212 |