Special issue in honour of Prof. Reto J. Strasser - Photosynthesis response of microalgae (Tetradesmus wisconsinensis) to different inorganic carbon sources probed with chlorophyll fluorescence analysis

Photosynthetica

I.UMETANI¹  E.JANKA²  M.SPOSOB²  R.BAKKE² 

[1] Department of Natural Sciences and Environmental Health, University of South-Eastern Norway,3800 Bø, Norway;Department of Process, Energy and Environmental Technology, University of South-Eastern Norway,3901 Porsgrunn, Norway;

关键词: growth;    medium;    optical density;    principal component analysis;   

DOI  :  10.32615/ps.2019.142

来源: DOAJ

【 摘 要 】

Bicarbonate is an alternative carbon source for production of photosynthetic microalgae, although sparging of CO2-enriched gas is commonly practised, its efficiency seems to be scarcely considered. This study evaluated the photosynthetic activities of microalgae (Tetradesmus wisconsinensis) using chlorophyll fluorescence under different concentrations of bicarbonate (HCO3-) and CO2. Chlorophyll fluorescence analysis showed noticeable difference in photosynthetic activity between the bicarbonate (HCO3-) and CO2 supplied cultures. The JIP-test parameters obtained for the cultures supplemented by HCO3- or CO2 were distinct, but of similar values in quantum yield of PSII. The typical polyphasic rise, called the OJIP curves, showed a typical difference between the treatments at the J and I inflection of the fluorescence transient curve. Both HCO3- (20 mM) and CO2 (5%, v/v) gave higher biomass yield than the other carbon regimes, i.e., 673 ± 12 and 658 ± 11 mg L-1, respectively. We concluded that bicarbonate resulted in similar photosynthetic yield as CO2 supplementation.

【 授权许可】

Unknown