Cited by 205Lipid Membrane Structure and BehaviorPlant Stress Responses and ToleranceSpectroscopy and Quantum Chemical Studies

Stabilization of model membranes during drying by compatible solutes involved in the stress tolerance of plants and microorganisms

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HINCHA, Dirk K., HAGEMANN, Martin·2004·Biochemical Journal

Abstract

Many organisms accumulate compatible solutes under environmental stress conditions. Cyanobacteria accumulate compatible solutes in response to increased external salinity, with tolerance increasing from Suc (sucrose) or trehalose to 2-O-(alpha-D-glucopyranosyl)-glycerol and glycinebetaine accumulating species. It is not clear how these different solutes influence salt tolerance. One possible explanation may be a differential ability of these solutes to stabilize membranes under stress conditions. We therefore performed drying experiments with liposomes in the presence of compatible solutes. Suc, trehalose and sorbitol protected liposomes from leakage of a soluble marker and from membrane fusion during drying and rehydration. 2-O-(alpha-D-glucopyranosyl)-glycerol was less effective and glycinebetaine showed hardly any effect. In combination with Suc, the latter two solutes showed improved protection. Lipid-phase transitions are known to contribute to solute leakage from liposomes. We determined phase transitions in dry membranes in the absence or presence of the solutes, using Fourier-transform infrared spectroscopy. The ability of the solutes to decrease the phase transition temperature corresponded closely to their ability to protect the liposomes against solute leakage. All solutes interacted with the phosphate in the lipid headgroups. The magnitude of the shift in the asymmetric P=O stretching vibration correlated closely with the lipid-phase transition temperature. This indicates that the degree of membrane protection afforded by the solutes is mainly determined by their ability to interact with the membrane lipids. However, this is not a determinant of cellular protection against salt stress, as the solutes show a reverse order when ranked with regard to protection against these stresses.

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Crossref · 10.1042/bj20040746

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  • Cyanobacteria follow two strategies to mitigate osmotic pressure: pump out ions, especially Na+ and Cl−, and produce solutes compatible with cell metabolism.

    “There are two strategies that cyanobacteria follow to mitigate the osmotic pressure: first, to pump out ions, especially Na + and Cl -, and second, to produce solutes that are compatible with the cell metabolism [75].”

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Authors
HINCHA, D. K., & HAGEMANN, M.
Affiliations
  • Max Planck Institute of Molecular Plant Physiology (DE)
  • University of Rostock (DE)
Venue
Biochemical Journal
Published
2004-10-08
Volume
383
Issue
2
Pages
277-283
ISSN
  • 0264-6021 (ISSN-L)
  • 1470-8728
OpenAlex
W1969189325
Cited by
205
References
59
Citations by year
2026: 4 · 2025: 6 · 2024: 7 · 2023: 2 · 2022: 7 · 2021: 9 · 2020: 9 · 2019: 5 · 2018: 6 · 2017: 8 · 2016: 12 · 2015: 13 · 2014: 11 · 2013: 9 · 2012: 13
FWCI
3.55
Type
journal article
Language
en
Open access
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Lipid Membrane Structure and Behavior
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Spectroscopy and Quantum Chemical Studies
Keywords
osmolytes, membrane stabilization, salt tolerance, betaine, trehalose, sucrose, sorbitol, lipid phase transition, membrane hydration, solute leakage, cyanobacteria
MeSH terms
Cyanobacteria, Betaine, Desiccation, Glucosides, Hydrogen Bonding, Liposomes, Microbiology, Plant Diseases, Plants, Salts, Spectroscopy, Fourier Transform Infrared, Plant Cells

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