Article (Scientific journals)
Tritrophic interactions among Macrosiphum euphorbiae aphids, their host plants and endosymbionts: investigation by a proteomic approach.
Francis, Frédéric; Guillonneau, F.; Leprince, Pierre et al.
2010In Journal of Insect Physiology, 56 (6), p. 575-85
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Keywords :
Animals; Aphids/chemistry/microbiology/physiology; Bacterial Proteins/isolation & purification; Cytoskeletal Proteins/analysis/isolation & purification; Electrophoresis, Gel, Two-Dimensional; Insect Proteins/isolation & purification; Lycopersicon esculentum/parasitology; Molecular Sequence Data; Plant Proteins/isolation & purification; Plants, Genetically Modified/chemistry/parasitology; Polymerase Chain Reaction; Proteomics; Rickettsia/chemistry/physiology; Symbiosis/physiology
Abstract :
[en] The Mi-1.2 gene in tomato confers resistance against certain clones of the potato aphid (Macrosiphum euphorbiae). This study used 2D-DIGE coupled with protein identification by MALDI-TOF-MS to compare the proteome patterns of avirulent and semivirulent potato aphids and their bacterial endosymbionts on resistant (Mi-1.2+) and susceptible (Mi-1.2-) tomato lines. Avirulent aphids had low survival on resistant plants, whereas the semivirulent clone could colonize these plants. Eighty-two protein spots showed significant quantitative differences among the four treatment groups, and of these, 48 could be assigned putative identities. Numerous structural proteins and enzymes associated with primary metabolism were more abundant in the semivirulent than in the avirulent aphid clone. Several proteins were also up-regulated in semivirulent aphids when they were transferred from susceptible to resistant plants. Nearly 25% of the differentially regulated proteins originated from aphid endosymbionts and not the aphid itself. Six were assigned to the primary endosymbiont Buchnera aphidicola, and 5 appeared to be derived from a Rickettsia-like secondary symbiont. These results indicate that symbiont expression patterns differ between aphid clones with differing levels of virulence, and are influenced by the aphids' host plant. Potentially, symbionts may contribute to differential adaptation of aphids to host plant resistance.
Disciplines :
Entomology & pest control
Biochemistry, biophysics & molecular biology
Author, co-author :
Francis, Frédéric  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Guillonneau, F.
Leprince, Pierre ;  Université de Liège - ULiège > GIGA - Neurosciences
De Pauw, Edwin  ;  Université de Liège - ULiège > Département de chimie (sciences) > GIGA-R : Laboratoire de spectrométrie de masse (L.S.M.)
Haubruge, Eric  ;  Université de Liège - ULiège > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech - Entomologie fonctionnelle et évolutive
Jia, L.
Goggin, F. L.
Language :
English
Title :
Tritrophic interactions among Macrosiphum euphorbiae aphids, their host plants and endosymbionts: investigation by a proteomic approach.
Publication date :
2010
Journal title :
Journal of Insect Physiology
ISSN :
0022-1910
Publisher :
Elsevier, Oxford, United Kingdom
Volume :
56
Issue :
6
Pages :
575-85
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
FRFC - Fonds de la Recherche Fondamentale Collective [BE]
Commentary :
Copyright 2009 Elsevier Ltd. All rights reserved.
Available on ORBi :
since 17 August 2010

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