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Carbon partitioning and lipid remodeling during phosphorus and nitrogen starvation in the marine microalga Diacronema lutheri (Haptophyta) ArchiMer
Huang, Bing; Mimouni, Virginie; Lukomska, Ewa; Morant-manceau, Annick; Bougaran, Gael.
The domesticated marine microalga Diacronema lutheri is of great interest for producing various highly valuable molecules like lipids, particularly long‐chain polyunsaturated fatty acids (LC‐PUFA). In this study, we investigated the impact of phosphorus (P) and nitrogen (N) starvation on growth, carbon fixation (photosynthetic activity) and partitioning, and membrane lipid remodeling in this alga during batch culture. Our results show that the photosynthetic machinery was similarly affected by P and N stress. Under N starvation, we observed a much lower photosynthetic rate and biomass productivity. The degradation and re‐use of cellular N‐containing compounds contributed to triacylglycerol (TAG) accumulation. On the other hand, P‐starved cells maintained...
Tipo: Text Palavras-chave: Carbon partitioning; Diacronema lutheri; Nitrogen; Phosphorus; Polyunsaturated fatty acid.
Ano: 2020 URL:
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