, Volume 48, Issue 4, pp 623–629 | Cite as

Increase in unsaturated fatty acids in membrane lipids of Suaeda salsa L. enhances protection of photosystem II under high salinity

  • N. Sui
  • M. Li
  • K. Li
  • J. Song
  • B. -S. Wang
Original Papers


In order to examine the possible role of unsaturated fatty acids in photosynthesis of halophytes under high salinity, the effect of salinity on plant growth, chlorophyll (Chl) content, photochemical efficiency of PSII, membrane lipid content and fatty acids composition of a C3 euhalophyte Suaeda salsa L. was investigated. Salt stress induced a slight increase of the maximal photochemical efficiency of PSII (Fv/Fm), actual PSII efficiency (ΦPSII), Chl a content and Chl a/b ratio. The unsaturated fatty acid content also increased under salt stress. The proportion of MGDG, DGDG, SQDG, and PC decreased, while the proportion of PG increased from 10.9% to 26.9% under salt stress. These results suggest that S. salsa displays high resistance to photoinhibition under salt stress and that increased concentration of unsaturated fatty acids in membrane lipids of S. salsa enhances the tolerance of photosystem II to salt stress.

Additional key words

chlorophyll membrane lipid photosystem salt stress Suaeda salsa unsaturated fatty acids 



palmitic acid; 16:1(3t)




stearic acid


oleic acid


linoleic acid


linolenic acid






initial fluorescence of the dark-adapted state


variable fluorescence


maximal fluorescence of the dark-adapted state


the steady-state fluorescence


maximal fluorescence in the light-adapted state


maximal photochemical efficiency of PSII


double bond index








the quantum yield of PSII electron transport




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We are grateful for financial support from the NSFC (National Natural Science Research Foundation of China, project No. 30870138), the China Postdoctoral Science Foundation (20090450155), the Doctoral Foundation of Shandong Province (2009BSB02023), the Postdoctoral Innovative Foundation of Shandong Province (200802009), and the Opening Foundation of the State Key Laboratory of Crop Biology, China (2008KF03).


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Key Lab of Plant Stress Research, College of Life ScienceShandong Normal UniversityJinanP.R. China
  2. 2.Shandong Academy of Agricultural SciencesJinanP.R. China

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