Changes in photosynthesis, growth and biomass composition in outdoor Chlorella g120 culture during the metabolic shift from heterotrophic to phototrophic cultivation regime

0544042 - MBÚ 2022 RIV NL eng J - Článek v odborném periodiku
Masojídek, Jiří - Ranglová, Karolína - Rearte, T. A. - Pla, P.S. M. C. - Torzillo, G. - Benavides, A. M. S. - Neori, A. - Gómez, C. - Alvarez-Gomez, F. - Lukeš, Martin - Caporgno, Martín - Abdala, R. - Miazek, K. - Massocato, T. F. - da Silva, J. C. - Atzmueller, R. - Al Mahrouqui, H. - Estrella, F. S. - Figueroa, F. L.
Changes in photosynthesis, growth and biomass composition in outdoor Chlorella g120 culture during the metabolic shift from heterotrophic to phototrophic cultivation regime.
Algal Research-Biomass Biofuels and Bioproducts. Roč. 56, JUN 2021 (2021), č. článku 102303. ISSN 2211-9264. E-ISSN 2211-9264
Grant CEP: GA MŠMT(CZ) LO1416
GRANT EU: European Commission(XE) 727874 - SABANA; European Commission ATCZ15
Institucionální podpora: RVO:61388971
Klíčová slova: Chlorophyll fluorescence * Microalgae * Photosynthesis * Physiology * Thin-layer cascade * Trophic conversion
Obor OECD: Microbiology
Impakt faktor: 5.276, rok: 2021
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S2211926421001223?via%3Dihub

Up to now, scarce information has been available regarding major photobiochemical changes that accompany the metabolic shift from heterotrophy to phototrophy in microalgae cells. In the present trials the trophic conversion from heterotrophic to phototrophic growth regime was studied in the microalga Chlorella vulgaris g120 grown in outdoor thin-layer cascades. The crucial question was whether Chlorella g120 can undergo the photoacclimation of its photosynthetic apparatus under natural irradiance. As for comparison the phototrophic strain Chlorella vulgaris R-117 was cultured in parallel. Various in-situ and ex-situ monitoring techniques namely oxygen production and chlorophyll fluorescence were tested to characterize physiological response of the Chlorella g120 culture during photoacclimation and correlate it with growth. We show that Chlorella g120 can undergo the metabolic shift from heterotrophic to phototrophic growth regime, but its conversion is. A rather high respiration rate was interpreted as a strategy to dissipate the unused light energy. Chlorella g120 was found as the strain characterized by a small-antenna size strain (low
Trvalý link: http://hdl.handle.net/11104/0321102