Version 1
: Received: 30 September 2023 / Approved: 1 October 2023 / Online: 1 October 2023 (07:23:01 CEST)
How to cite:
Le, T.T.; Corato, A.; Gerards, T.; Gérin, S.; Remacle, C.; Franck, F. Heterotrophy Compared to Photoautotrophy for Growth Characteristics and Pigment Compositions in Batch Cultures of Four Green Microagae. Preprints2023, 2023100003. https://doi.org/10.20944/preprints202310.0003.v1
Le, T.T.; Corato, A.; Gerards, T.; Gérin, S.; Remacle, C.; Franck, F. Heterotrophy Compared to Photoautotrophy for Growth Characteristics and Pigment Compositions in Batch Cultures of Four Green Microagae. Preprints 2023, 2023100003. https://doi.org/10.20944/preprints202310.0003.v1
Le, T.T.; Corato, A.; Gerards, T.; Gérin, S.; Remacle, C.; Franck, F. Heterotrophy Compared to Photoautotrophy for Growth Characteristics and Pigment Compositions in Batch Cultures of Four Green Microagae. Preprints2023, 2023100003. https://doi.org/10.20944/preprints202310.0003.v1
APA Style
Le, T.T., Corato, A., Gerards, T., Gérin, S., Remacle, C., & Franck, F. (2023). Heterotrophy Compared to Photoautotrophy for Growth Characteristics and Pigment Compositions in Batch Cultures of Four Green Microagae. Preprints. https://doi.org/10.20944/preprints202310.0003.v1
Chicago/Turabian Style
Le, T.T., Claire Remacle and Fabrice Franck. 2023 "Heterotrophy Compared to Photoautotrophy for Growth Characteristics and Pigment Compositions in Batch Cultures of Four Green Microagae" Preprints. https://doi.org/10.20944/preprints202310.0003.v1
Abstract
Four strains of green microalgae (Scenedesmus acutus, Scenedesmus vacuolatus, Chlorella sorokiniana and Chlamydomonas reinhardtii) were compared for growth and pigment composition under photoautotrophic or heterotrophic conditions. Batch growth experiments were performed in multicultivators with online monitoring of optical density. For photoautotrophic growth, light-limited (CO2-sufficient) growth was analysed under different light intensities during exponential and deceleration growth phases. The specific growth rate, mesured during exponential phase, and the maximal biomass productivity, measured during deceleration phase, were not related to each other when different light intensities and different species were considered. This indicates species-dependent photoacclimation effects during cultivation time, which was confirmed by light-dependent changes in pigment contents and compositions when exponential and deceleration phases were compared. Except for C. reinhardtii, that does not grow on glucose, heterotrophic growth was promoted to similar extents by acetate or by glucose, however these two substrates led to different pigment compositions. Weak light increased pigment contents during heterotrophy in the four species, but was efficient in promoting growth only in S. acutus. C. sorokiniana and S. vacuolatus exhibited the best potential for heterotrophic biomass productivities both on glucose and acetate, with carotenoid (lutein) content being the highest in the former.
Biology and Life Sciences, Biology and Biotechnology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
