Impact of environmental conditions on phospholipid fatty acid composition: implications from two contrasting estuaries
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Impact of environmental conditions on phospholipid fatty acid composition: implications from two contrasting estuaries Ivna Vrana Sˇpoljaric´ . Tihana Novak . Blazˇenka Gasˇparovic´ . ˇ ankovic´ . Zrinka Ljubesˇic´ . Snjezˇana P. Kazazic´ . Milan C Enis Hrustic´ . Marina Mlakar . Jinzhou Du . Ruifeng Zhang . Zhuoyi Zhu Received: 3 May 2020 / Accepted: 20 October 2020 Ó Springer Nature B.V. 2020
Abstract Phospholipid (PL) composition has a tremendous influence on the cell integrity and physiological competency. At the same time, plankton PL make important metabolic fuels for higher trophic levels. The goal of this study was to identify environmental control on PL production and their molecular identity of the suspended particles in two different estuaries. We conducted research in subtropical, eutrophic Wenchang River Estuary in China and temperate pristine, mesotrophic Krka River Estuary in Handling Editor: Te´lesphore Sime-Ngando. I. Vrana Sˇpoljaric´ T. Novak B. Gasˇparovic´ (&) M. Cˇankovic´ M. Mlakar Laboratory for Marine and Atmospheric Biogeochemistry, Division for Marine and Environmental Research, Rud¯er Bosˇkovic´ Institute, Bijenicˇka cesta 54, 10000 Zagreb, Croatia e-mail: [email protected] S. P. Kazazic´ Laboratory for Mass Spectrometry and Functional Proteomics, Division of Physical Chemistry, Rud¯er Bosˇkovic´ Institute, Bijenicˇka cesta 54, 10000 Zagreb, Croatia
Croatia. In agreement with the more abundant phytoplankton, PL concentrations were much higher in the Wenchang River Estuary (30.3–178.2 lg L-1) than in the Krka River Estuary (8.4–18.8 lg L-1). Given that six PL classes investigated (phosphatidylcholine (PC), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), phosphatidic acid (PA), phosphatidylinositol (PI), and phosphatidylserine (PS)) have different roles in the cell, we expected their different fatty acid composition in different environments. We found small differences in the fatty acid composition of PC, PG, and PI between two estuaries. These results suggest that the essential M. Mlakar Laboratory for physical chemistry of traces, Division for Marine and Environmental Research, Rud¯er Bosˇkovic´ Institute, Bijenicˇka cesta 54, 10000 Zagreb, Croatia J. Du Z. Zhu State Key Laboratory of Estuarine and Coastal Research, East China Normal University, No. 500 Dongchuan Road, Shanghai 200241, People’s Republic of China R. Zhang School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, People’s Republic of China
Z. Ljubesˇic´ Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia E. Hrustic´ Institute for Marine and Coastal Research, University of Dubrovnik, Kneza Damjana Jude 12, 20000 Dubrovnik, Croatia
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Aquat Ecol
fatty acid compositions of these PL in estuarine plankton are relatively constant in order to preserve membrane functions and/or cell processes in which they are involved regardless of environmental conditions. In contrast, PE, PA and PS fatty aci
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