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Li, Yahe; Xu, Juntian; Gao, Kunshan (2014): Light-modulated responses of growth and photosynthetic performance to ocean acidification in the model diatom Phaeodactylum tricornutum [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.837678, Supplement to: Li, Y et al. (2014): Light-Modulated Responses of Growth and Photosynthetic Performance to Ocean Acidification in the Model Diatom Phaeodactylum tricornutum. PLoS ONE, 9(5), e96173, https://doi.org/10.1371/journal.pone.0096173

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Abstract:
Ocean acidification (OA) due to atmospheric CO2 rise is expected to influence marine primary productivity. In order to investigate the interactive effects of OA and light changes on diatoms, we grew Phaeodactylum tricornutum, under ambient (390 ppmv; LC) and elevated CO2 (1000 ppmv; HC) conditions for 80 generations, and measured its physiological performance under different light levels (60 µmol/m**2/s, LL; 200 µmol/m**2/s, ML; 460 µmol/m**2/s, HL) for another 25 generations. The specific growth rate of the HC-grown cells was higher (about 12-18%) than that of the LC-grown ones, with the highest under the ML level. With increasing light levels, the effective photochemical yield of PSII (Fv'/Fm') decreased, but was enhanced by the elevated CO2, especially under the HL level. The cells acclimated to the HC condition showed a higher recovery rate of their photochemical yield of PSII compared to the LC-grown cells. For the HC-grown cells, dissolved inorganic carbon or CO2 levels for half saturation of photosynthesis (K1/2 DIC or K1/2 CO2) increased by 11, 55 and 32%, under the LL, ML and HL levels, reflecting a light dependent down-regulation of carbon concentrating mechanisms (CCMs). The linkage between higher level of the CCMs down-regulation and higher growth rate at ML under OA supports the theory that the saved energy from CCMs down-regulation adds on to enhance the growth of the diatom.
Keyword(s):
Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Growth/Morphology; Laboratory experiment; Laboratory strains; Light; North Pacific; Ochrophyta; Pelagos; Phaeodactylum tricornutum; Phytoplankton; Primary production/Photosynthesis; Single species
Further details:
Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
Comment:
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 2014-10-31.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesGao, Kunshan
2TreatmentTreatGao, Kunshanambient CO2=390 ppmv, elevated CO2=1000 ppmv
3IrradianceEµmol/m2/sGao, Kunshan
4Growth rateµ1/dayGao, Kunshan
5Growth rate, standard deviationµ std dev±Gao, Kunshan
6Chlorophyll a per cellChl a/cellpg/#Gao, Kunshan
7Chlorophyll a, standard deviationChl a std dev±Gao, Kunshan
8Chlorophyll c per cellChl c/cellpg/#Gao, Kunshan
9Chlorophyll c, standard deviationChl c std dev±Gao, Kunshan
10Carotenoids per cellCarotenoids/cellpg/#Gao, Kunshan
11Carotenoids, standard deviationCarotenoids std dev±Gao, Kunshan
12Time in daysTimedaysGao, Kunshan
13Effective photochemical quantum yieldphi PS IIGao, Kunshan
14Effective photochemical quantum yield, standard deviationphi PS II std dev±Gao, Kunshan
15Non photochemical quenchingNPQGao, Kunshan
16Non photochemical quenching, standard deviationNPQ std dev±Gao, Kunshan
17Carbon, inorganic, dissolved, reciprocal of photosynthetic affinity valueDIC K1/2mmol/lGao, Kunshan
18Carbon, inorganic, dissolved, reciprocal of photosynthetic affinity value, standard deviationDIC K1/2 std dev±Gao, Kunshan
19Carbon dioxide, reciprocal of photosynthetic affinity valueCO2 K1/2µmol/lGao, Kunshan
20Carbon dioxide, reciprocal of photosynthetic affinity value, standard deviationCO2 K1/2 std dev±Gao, Kunshan
21Time in minutesTimeminGao, Kunshan
22Effective quantum yieldYGao, Kunshan
23Effective quantum yield, standard deviationY std dev±Gao, Kunshan
24Temperature, waterTemp°CGao, Kunshan
25SalinitySalGao, Kunshan
26pHpHGao, KunshanPotentiometricNBS scale
27pH, standard deviationpH std dev±Gao, KunshanPotentiometricNBS scale
28Carbon, inorganic, dissolvedDICµmol/kgGao, KunshanCalculated using CO2SYS
29Carbon, inorganic, dissolved, standard deviationDIC std dev±Gao, KunshanCalculated using CO2SYS
30Bicarbonate ion[HCO3]-µmol/kgGao, KunshanCalculated using CO2SYS
31Bicarbonate ion, standard deviation[HCO3]- std dev±Gao, KunshanCalculated using CO2SYS
32Carbonate ion[CO3]2-µmol/kgGao, KunshanCalculated using CO2SYS
33Carbonate ion, standard deviation[CO3]2- std dev±Gao, KunshanCalculated using CO2SYS
34Carbon dioxideCO2µmol/kgGao, KunshanCalculated using CO2SYS
35Alkalinity, totalATµmol/kgGao, KunshanCalculated using CO2SYS
36Alkalinity, total, standard deviationAT std dev±Gao, KunshanCalculated using CO2SYS
37Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
39Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
41Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
42Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
43Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
44Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
45Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
46Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3778 data points

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