Gradients in intact polar diacylglycerolipids across the Mediterranean Sea are related to phosphate availability

Kim Popendorf, T. Tanaka, M. Pujo-Pay, A. Lagaria, C. Courties, P. Conan, L. Oriol, L. E. Sofen, T. Moutin, B. A.S. Van Mooy

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Intact polar membrane lipids compose a significant fraction of cellular material in plankton and their synthesis imposes a substantial constraint on planktonic nutrient requirements. As a part of the Biogeochemistry from the Oligotrophic to the Ultraoligotrophic Mediterranean (BOUM) cruise we examined the distribution of several classes of intact polar diacylglycerolipids (IP-DAGs) across the Mediterranean, and found that phospholipid concentration as a percent of total lipids correlated with phosphate concentration. In addition, the ratios of non-phosphorus lipids to phospholipids- sulfoquinovosyldiacylglycerol (SQDG) to phosphatidylglycerol (PG), and betaine lipids to phosphatidylcholine (PC)-were also found to increase from west to east across the Mediterranean. Additionally, microcosm incubations from across the Mediterranean were amended with phosphate and ammonium, and in the course of several days nutrient amendments elicited a shift in the ratios of IP-DAGs. These experiments were used to assess the relative contribution of community shifts and physiological response to the observed change in IP-DAGs across the Mediterranean. The ratio of SQDG to chlorophyll-a was also explored as an indicator of phytoplankton response to nitrogen availability. This study is the first to demonstrate the dynamic response of membrane lipid composition to changes in nutrients in a natural, mixed planktonic community.

Original languageEnglish (US)
Pages (from-to)3733-3745
Number of pages13
JournalBiogeosciences
Volume8
Issue number12
DOIs
StatePublished - Dec 1 2011
Externally publishedYes

Fingerprint

Mediterranean Sea
lipid
phosphate
phosphates
lipids
phospholipids
phospholipid
nutrient
biogeochemistry
phosphatidylglycerols
betaine
membrane
nutrients
lipid composition
nutrient requirements
physiological response
phosphatidylcholines
plankton
dynamic response
microcosm

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Earth-Surface Processes

Cite this

Popendorf, K., Tanaka, T., Pujo-Pay, M., Lagaria, A., Courties, C., Conan, P., ... Van Mooy, B. A. S. (2011). Gradients in intact polar diacylglycerolipids across the Mediterranean Sea are related to phosphate availability. Biogeosciences, 8(12), 3733-3745. https://doi.org/10.5194/bg-8-3733-2011

Gradients in intact polar diacylglycerolipids across the Mediterranean Sea are related to phosphate availability. / Popendorf, Kim; Tanaka, T.; Pujo-Pay, M.; Lagaria, A.; Courties, C.; Conan, P.; Oriol, L.; Sofen, L. E.; Moutin, T.; Van Mooy, B. A.S.

In: Biogeosciences, Vol. 8, No. 12, 01.12.2011, p. 3733-3745.

Research output: Contribution to journalArticle

Popendorf, K, Tanaka, T, Pujo-Pay, M, Lagaria, A, Courties, C, Conan, P, Oriol, L, Sofen, LE, Moutin, T & Van Mooy, BAS 2011, 'Gradients in intact polar diacylglycerolipids across the Mediterranean Sea are related to phosphate availability', Biogeosciences, vol. 8, no. 12, pp. 3733-3745. https://doi.org/10.5194/bg-8-3733-2011
Popendorf, Kim ; Tanaka, T. ; Pujo-Pay, M. ; Lagaria, A. ; Courties, C. ; Conan, P. ; Oriol, L. ; Sofen, L. E. ; Moutin, T. ; Van Mooy, B. A.S. / Gradients in intact polar diacylglycerolipids across the Mediterranean Sea are related to phosphate availability. In: Biogeosciences. 2011 ; Vol. 8, No. 12. pp. 3733-3745.
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