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

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    0544042 - MBÚ 2022 RIV NL eng J - Journal Article
    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
    R&D Projects: GA MŠk(CZ) LO1416
    EU Projects: European Commission(XE) 727874 - SABANA; European Commission ATCZ15
    Institutional support: RVO:61388971
    Keywords : Chlorophyll fluorescence * Microalgae * Photosynthesis * Physiology * Thin-layer cascade * Trophic conversion
    Subject RIV: EE - Microbiology, Virology
    OBOR OECD: Microbiology
    Impact factor: 4.401, year: 2020
    Method of publishing: Limited access
    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
    Permanent Link: http://hdl.handle.net/11104/0321102

     
     
Number of the records: 1