Changes in plasma membrane fluidity of Bryonia dioica internodes during thigmomorphogenesis
| Autor: | N. Boyer, Claude Motta, Catherine Thonat, Marie-Andrée Hartmann, Catherine Mathieu |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Diphenylhexatriene
(Bryonia dioica) FA PM Membrane Fluidity Membrane lipids PG Phospholipid Biophysics PI Fluorescence Polarization PS Biochemistry Cell membrane chemistry.chemical_compound Membrane Lipids Physical Stimulation Sulfo PL medicine Membrane fluidity Morphogenesis Phospholipids Plant Physiological Phenomena Sterol chemistry.chemical_classification biology Cell Membrane Fatty Acids Steady-state fluorescence polarization Fatty acid Cell Biology Plants Bryonia dioica biology.organism_classification Sterols medicine.anatomical_structure chemistry DPH Thigmomorphogenesis lipids (amino acids peptides and proteins) PC PE Plasma membrane fluidity ΔE PA |
| Zdroj: | Biochimica et Biophysica Acta (BBA) - Biomembranes. (2):249-255 |
| ISSN: | 0005-2736 |
| DOI: | 10.1016/0005-2736(95)80011-4 |
| Popis: | Fluidity changes in plasma membrane (PM) lipid extracts or native membranes isolated from Bryonia dioica internodes after a mechanical stimulation were monitored by steady-state fluorescence polarization with 1,6-diphenyl-1,3,5-hexatriene as a probe. The signal was shown to rapidly induce an increase in the bulk lipid fluidity. This event was closely related to a relative enrichment in some phospholipid species (PC, PG and PS) as well as a significant increase in the unsaturation index of total fatty acyl chains. Free sterols and protein content did not appear to be involved into this process. After 48 h, lipids from rubbed internodes became less fluid than PM lipids from control internodes. |
| Databáze: | OpenAIRE |
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