NDLI: Triacylglycerol accumulation of Phaeodactylum tricornutum with different supply of inorganic carbon

Content Provider	Springer Nature Link
Author	Peng, Xiaowei Liu, Shuo Zhang, Wei Zhao, Yonggang Chen, Lin Wang, Hui Liu, Tianzhong
Copyright Year	2013
Abstract	The diatom Phaeodactylum tricornutum produces large quantities of lipids, especially triacylglycerols (TAGs) under nitrogen or phosphorus limitation. In this study, production of lipids and TAGs during this process was compared under conditions with different inputs of inorganic carbon. With an abundant supply of inorganic carbon, considerable accumulation of biomass, lipids, and TAGs was identified after a nitrogen/phosphorus-limiting “induction incubation.” TAGs were still synthesized and accumulated even under inorganic carbon limitation with a cessation in the production of biomass and cellular lipids. This part of accumulated TAGs could be synthesized through recycling and transformation of other lipids such as glycolipids and phospholipids. Additionally, some alterations in the fatty acid profile following TAG accumulation were found. The content of the C16:0 fatty acid increased with decreases in C16:3 and C20:5, which could have been caused by enzymatic selectivity for these fatty acids during the process of TAG synthesis. It was concluded that nitrogen and phosphorus metabolism regulates the synthesis of TAG, while carbon metabolism promotes it by providing sufficient substrates.
Starting Page	131
Ending Page	139
Page Count	9
File Format	PDF
ISSN	09218971
Journal	Journal of Applied Phycology
Volume Number	26
Issue Number	1
e-ISSN	15735176
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-07-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic carbon Induction incubation Lipid accumulation TAG accumulation Fatty acid profile Plant Sciences Freshwater & Marine Ecology Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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