FN Archimer Export Format
PT J
TI Carbon partitioning and lipid remodeling during phosphorus and nitrogen starvation in the marine microalga   Diacronema lutheri   (Haptophyta)
BT 
AF Huang, Bing
   Mimouni, Virginie
   Lukomska, Ewa
   Morant-Manceau, Annick
   Bougaran, Gael
AS 1:1;2:2;3:3;4:1;5:3;
FF 1:;2:;3:PDG-RBE-BRM-LPBA;4:;5:PDG-RBE-BRM-LPBA;
C1 Laboratoire Mer, Molécules; Santé (IUML - FR 3473 CNRS), UFR Sciences et Techniques, Le Mans Université, avenue Olivier Messiaen; 72085 Le Mans Cedex, France
   Laboratoire Mer, Molécules; Santé (IUML - FR 3473 CNRS), IUT de Laval, Département Génie Biologique, Le Mans Université; 52 rue des Docteurs Calmette et Guérin 53020 Laval Cedex, France
   Laboratoire Physiologie et Biotechnologie des Algues; IFREMER; rue de l'Ile d'Yeu, BP 21105 44311 Nantes Cedex, France
C2 UNIV LE MANS, FRANCE
   UNIV LE MANS, FRANCE
   IFREMER, FRANCE
SI NANTES
SE PDG-RBE-BRM-LPBA
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
IF 2.923
TC 11
UR https://archimer.ifremer.fr/doc/00619/73071/72204.pdf
LA English
DT Article
DE ;carbon partitioning;Diacronema lutheri;nitrogen;phosphorus;polyunsaturated fatty acid
AB 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 pigment content and a carbon partitioning pattern more similar to the control, ensuring a high biomass. Betaine lipids constitute the major compounds of non‐plastidial membranes, which are rich in eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids. Under P and N starvations, EPA was transferred from the recycling of membrane polar lipids, most likely contributing to TAG accumulation. 
PY 2020
PD AUG
SO Journal Of Phycology
SN 0022-3646
PU Wiley
VL 56
IS 4
UT 000527252300001
BP 908
EP 922
DI 10.1111/jpy.12995
ID 73071
ER

EF