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Nitrogen and phosphorus limitations induce carbon partitioning and membrane lipid remodelling in the marine diatom Phaeodactylum tricornutum ArchiMer
Huang, Bing; Marchand, Justine; Blanckaert, Vincent; Lukomska, Ewa; Ulmann, Lionel; Wielgosz-collin, Gaëtane; Rabesaotra, Vony; Moreau, Brigitte; Bougaran, Gael; Mimouni, Virginie; Morant-manceau, Annick.
Nitrogen (N) and phosphorus (P) limitations induce triacylglycerol (TAG) accumulation and membrane lipid remodelling in the marine diatom Phaeodactylum tricornutum. However, a clear understanding of the metabolic reorientation is still lacking. Carbon partitioning is of great interest because this microalga produces various highly valuable molecules such as lipids and polyunsaturated fatty acids. This study compared growth, photosynthetic activity, biochemical and transcriptional responses of P. tricornutum throughout batch culture under N or P limitation. The integrated results show that the photosynthetic intensity was greatly reduced under N or P limitation. Under N limitation, the degradation and re-use of cellular N-containing compounds contributed to...
Tipo: Text Palavras-chave: Betaine lipid; Lipid remodelling; Microalga; Nitrogen; Phosphorus; Polyunsaturated fatty acid.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00491/60249/63861.pdf
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