A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and Heterotrophy
Considering the importance of microalgae as a promising feedstock for the production of both low- and high-value products, such as lipids and pigments, it is desirable to isolate strains which simultaneously accumulate these two types of products and grow in various conditions in order to widen thei...
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MDPI AG
2022-02-01
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| Series: | Life |
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| author | Amélie Corato Thanh Tung Le Denis Baurain Philippe Jacques Claire Remacle Fabrice Franck |
| author_facet | Amélie Corato Thanh Tung Le Denis Baurain Philippe Jacques Claire Remacle Fabrice Franck |
| author_sort | Amélie Corato |
| collection | DOAJ |
| description | Considering the importance of microalgae as a promising feedstock for the production of both low- and high-value products, such as lipids and pigments, it is desirable to isolate strains which simultaneously accumulate these two types of products and grow in various conditions in order to widen their biotechnological applicability. A novel freshwater strain from the genus <i>Coelastrella</i> was isolated in Belgium. Compared to other <i>Coelastrella</i> species, the isolate presented rapid growth in phototrophy, dividing 3.5 times per day at a light intensity of 400 µmol·m<sup>−2</sup>·s<sup>−1</sup> and 5% CO<sub>2</sub>. In addition, nitrogen depletion was associated with the accumulation of astaxanthin, canthaxanthin, and fatty acids, which reached ~30% of dry weight, and a majority of SFAs and MUFAs, which are good precursors for biodiesel. This strain also accumulated astaxanthin and canthaxanthin in heterotrophy. Although the content was very low in this latter condition, it is an interesting feature considering the biotechnological potential of the microalgal heterotrophic growth. Thus, due to its rapid growth in the light, its carotenogenesis, and its fatty acids characteristics, the newly identified <i>Coelastrella</i> strain could be considered as a potential candidate for biorefinery purposes of both low- and high-values products. |
| first_indexed | 2024-03-09T13:34:58Z |
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| issn | 2075-1729 |
| language | English |
| last_indexed | 2024-03-09T13:34:58Z |
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| spelling | doaj.art-5450f8645f9a40f89603a97a89fba8142023-11-30T21:13:15ZengMDPI AGLife2075-17292022-02-0112333410.3390/life12030334A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and HeterotrophyAmélie Corato0Thanh Tung Le1Denis Baurain2Philippe Jacques3Claire Remacle4Fabrice Franck5Laboratory of Bioenergetics, InBios/PhytoSystems, Department of Life Sciences, University of Liege, Chemin de la Vallée 4, 4000 Liege, BelgiumLaboratory of Bioenergetics, InBios/PhytoSystems, Department of Life Sciences, University of Liege, Chemin de la Vallée 4, 4000 Liege, BelgiumEukaryotic Phylogenomics, InBios/PhytoSystems, University of Liege, Chemin de la Vallée 4, 4000 Liege, BelgiumMicrobial Processes and Interactions (MiPI), TERRA Teaching and Research Centre, Joint Research Unit BioEcoAgro UMRt 1158, Gembloux Agro-Bio Tech, University of Liege, Avenue de la Faculté d’Agronomie, 2B, 5030 Gembloux, BelgiumGenetics and Physiology of Microalgae, InBios/PhytoSystems, Department of Life Sciences, University of Liege, Chemin de la Vallée 4, 4000 Liege, BelgiumLaboratory of Bioenergetics, InBios/PhytoSystems, Department of Life Sciences, University of Liege, Chemin de la Vallée 4, 4000 Liege, BelgiumConsidering the importance of microalgae as a promising feedstock for the production of both low- and high-value products, such as lipids and pigments, it is desirable to isolate strains which simultaneously accumulate these two types of products and grow in various conditions in order to widen their biotechnological applicability. A novel freshwater strain from the genus <i>Coelastrella</i> was isolated in Belgium. Compared to other <i>Coelastrella</i> species, the isolate presented rapid growth in phototrophy, dividing 3.5 times per day at a light intensity of 400 µmol·m<sup>−2</sup>·s<sup>−1</sup> and 5% CO<sub>2</sub>. In addition, nitrogen depletion was associated with the accumulation of astaxanthin, canthaxanthin, and fatty acids, which reached ~30% of dry weight, and a majority of SFAs and MUFAs, which are good precursors for biodiesel. This strain also accumulated astaxanthin and canthaxanthin in heterotrophy. Although the content was very low in this latter condition, it is an interesting feature considering the biotechnological potential of the microalgal heterotrophic growth. Thus, due to its rapid growth in the light, its carotenogenesis, and its fatty acids characteristics, the newly identified <i>Coelastrella</i> strain could be considered as a potential candidate for biorefinery purposes of both low- and high-values products.https://www.mdpi.com/2075-1729/12/3/334microalga<i>Coelastrella</i>Chlorophyceaecarotenoidsastaxanthincanthaxanthin |
| spellingShingle | Amélie Corato Thanh Tung Le Denis Baurain Philippe Jacques Claire Remacle Fabrice Franck A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and Heterotrophy Life microalga <i>Coelastrella</i> Chlorophyceae carotenoids astaxanthin canthaxanthin |
| title | A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and Heterotrophy |
| title_full | A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and Heterotrophy |
| title_fullStr | A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and Heterotrophy |
| title_full_unstemmed | A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and Heterotrophy |
| title_short | A Fast-Growing Oleaginous Strain of <i>Coelastrella</i> Capable of Astaxanthin and Canthaxanthin Accumulation in Phototrophy and Heterotrophy |
| title_sort | fast growing oleaginous strain of i coelastrella i capable of astaxanthin and canthaxanthin accumulation in phototrophy and heterotrophy |
| topic | microalga <i>Coelastrella</i> Chlorophyceae carotenoids astaxanthin canthaxanthin |
| url | https://www.mdpi.com/2075-1729/12/3/334 |
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