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Mar. Drugs 2018, 16(3), 76;

Comparative Analysis of Culture Conditions for the Optimization of Carotenoid Production in Several Strains of the Picoeukaryote Ostreococcus

Observatoire Océanologique, UMR 7621 Laboratoire d’Océanographie Microbienne, Université de Pierre et Marie Curie (Paris 06), Sorbonne Universités, 66650 Banyuls-sur-Mer, France
Author to whom correspondence should be addressed.
Received: 29 January 2018 / Revised: 16 February 2018 / Accepted: 16 February 2018 / Published: 28 February 2018
(This article belongs to the Special Issue Marine Microalgae)
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Microalgae are promising sources for the sustainable production of compounds of interest for biotechnologies. Compared to higher plants, microalgae have a faster growth rate and can be grown in industrial photobioreactors. The microalgae biomass contains specific metabolites of high added value for biotechnology such as lipids, polysaccharides or carotenoid pigments. Studying carotenogenesis is important for deciphering the mechanisms of adaptation to stress tolerance as well as for biotechnological production. In recent years, the picoeukaryote Ostreococcus tauri has emerged as a model organism thanks to the development of powerful genetic tools. Several strains of Ostreococcus isolated from different environments have been characterized with respect to light response or iron requirement. We have compared the carotenoid contents and growth rates of strains of Ostreococcus (OTTH595, RCC802 and RCC809) under a wide range of light, salinity and temperature conditions. Carotenoid profiles and productivities varied in a strain-specific and stress-dependent manner. Our results also illustrate that phylogenetically related microalgal strains originating from different ecological niches present specific interests for the production of specific molecules under controlled culture conditions. View Full-Text
Keywords: Ostreococcus; carotenoids; growth rate; light; temperature; salinity Ostreococcus; carotenoids; growth rate; light; temperature; salinity

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Guyon, J.-B.; Vergé, V.; Schatt, P.; Lozano, J.-C.; Liennard, M.; Bouget, F.-Y. Comparative Analysis of Culture Conditions for the Optimization of Carotenoid Production in Several Strains of the Picoeukaryote Ostreococcus. Mar. Drugs 2018, 16, 76.

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