Cultivation of the microalgae Chlamydomonas reinhardtii and Desmodesmus quadricauda in highly deuterated media: Balancing the light intensity

0563736 - MBÚ 2023 RIV CH eng J - Journal Article
Kselíková, Veronika - Husarčíková, K. - Mojžes, P. - Zachleder, Vilém - Bišová, Kateřina
Cultivation of the microalgae Chlamydomonas reinhardtii and Desmodesmus quadricauda in highly deuterated media: Balancing the light intensity.
Frontiers in Bioengineering and Biotechnology. Roč. 10, SEP 5 2022 (2022), č. článku 1620816. ISSN 2296-4185. E-ISSN 2296-4185
R&D Projects: GA ČR(CZ) GA19-12607S
Institutional support: RVO:61388971
Keywords : microalgae * deuterium * light intensity * cell division * deuterated compounds * physicalstress
OECD category: Microbiology
Impact factor: 5.7, year: 2022
Method of publishing: Open access
https://www.frontiersin.org/articles/10.3389/fbioe.2022.960862/full

The production of organic deuterated compounds in microalgal systems represents a cheaper and more versatile alternative to more complicated chemical synthesis. In the present study, we investigate the autotrophic growth of two microalgae, Chlamydomonas reinhardtii and Desmodesmus quadricauda, in medium containing high doses of deuterated water, D2O. The growth of such cultures was evaluated in the context of the intensity of incident light, since light is a critical factor in the management of autotrophic algal cultures. Deuteration increases the light sensitivity of both model organisms, resulting in increased levels of singlet oxygen and poorer photosynthetic performance. Our results also show a slowdown in growth and cell division processes with increasing D2O concentrations. At the same time, impaired cell division leads to cell enlargement and accumulation of highly deuterated compounds, especially energy-storing molecules. Thus, considering the specifics of highly deuterated cultures and using the growth conditions proposed in this study, it is possible to obtain highly deuterated algal biomass, which could be a valuable source of deuterated organic compounds.
Permanent Link: https://hdl.handle.net/11104/0335678