Poster (Scientific congresses and symposiums)
Use of complementary biophysical approaches to study the interactions of fatty acid hydroperoxides with biomimetic plant plasma membranes
Deboever, Estelle; Nasir, Mehmet Nail; Deleu, Magali et al.
2017Journées Jeunes Chercheurs SFR Condorcet
 

Files


Full Text
Poster_J2C2_ED.pdf
Author postprint (970.87 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Oxylipines; éliciteurs; hydroperoxydes d'acides gras
Abstract :
[en] In the actual context, biopesticides have emerged as a main alternative to conventional agriculture1. Hence, elicitors are metabolites naturally produced by microorganisms, pathogenic or not, and plants which are able to induce the natural resistance of plants. Also, they have proved to be excellent candidates for biological control. In this context, the lipoxygenase pathway leads to the formation of fatty acid degradation products, called oxylipins, which appear to be crucial agents in plant defence mechanisms2,3. Moreover, with their broad spectrum of action and their possible inducibility, oxylipins appear to be promising candidates for their use as elicitors4. This work focuses on two hydroperoxy-derived oxylipins, the 13(S)-hydroperoxy-octadecadienoic acid (13-HPOD) and the 13(S)-hydroperoxy-octadecatrienoic acid (13-HPOT). The study of the interaction of such compounds with representative plant plasma membrane lipids is essential to understand plant resistance mechanisms. Several in silico and experimental techniques of biophysics showed that acyl-hydroperoxides have significant adsorption capacity and a strong affinity for model membranes. They may also penetrate biological membrane but no permeabilisation effect was observed in this work. Slight conformational differences seem to have a significant impact on their ability to interact with plant plasma membranes. Based on these results, further investigation of the interactions of fatty acids hydroperoxides, even more on the 9-forms, with plant plasma membranes and eventually in the presence of phytopathogenic species, would allow a better understanding of the innate immunity and, on the longer term, could lead to the development of new elicitors with biological mechanisms potentially independent of membrane protein receptors.
Research center :
Agronomie, Bioingénierie et Chimie - AgroBioChem
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Deboever, Estelle ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Nasir, Mehmet Nail ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie générale et organique
Deleu, Magali  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Biophysique moléc. aux interfaces
Lins, Laurence  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Biophysique moléc. aux interfaces
Fauconnier, Marie-Laure  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie générale et organique
Language :
English
Title :
Use of complementary biophysical approaches to study the interactions of fatty acid hydroperoxides with biomimetic plant plasma membranes
Alternative titles :
[fr] Utilisation d'approches biophysiques complémentaires pour étudier les interactions entre les hydroperoxydes d'acides gras et les membranes plasmiques végétales modèles
Publication date :
20 January 2017
Event name :
Journées Jeunes Chercheurs SFR Condorcet
Event organizer :
SFR Condorcet Université de Reims Champagne - Ardenne
Event place :
Amiens, France
Event date :
19 janvier 2017 au 20 janvier 2017
Audience :
International
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Available on ORBi :
since 25 January 2017

Statistics


Number of views
103 (24 by ULiège)
Number of downloads
7 (6 by ULiège)

Bibliography


Similar publications



Contact ORBi