Reference : Microorganism-associated semiochemicals reduce the size of aphid populations in potat...
Scientific journals : Article
Life sciences : Entomology & pest control
http://hdl.handle.net/2268/178029
Microorganism-associated semiochemicals reduce the size of aphid populations in potato fields
English
Alabi, Taofic mailto [Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Brostaux, Yves mailto [Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie >]
Grigorescu, Alina mailto [Université de Liège - ULiège > > Centre Wallon de biologie industrielle >]
Fischer, Christophe mailto [Université de Liège - ULiège > Chimie et bio-industries > Bio-industries >]
Thonart, Philippe mailto [Université de Liège - ULiège > Chimie et bio-industries > Bio-industries >]
Lognay, Georges mailto [Université de Liège - ULiège > Chimie et bio-industries > Analyse, qual. et risques - Labo. de Chimie analytique >]
Haubruge, Eric mailto [Université de Liège - ULiège > > Premier Vice-Recteur >]
Francis, Frédéric mailto [Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Verheggen, François mailto [Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
2014
Revue des Régions Arides
Institut des Régions Arides (IRA)
35
Actes du 4ème Meeting International ‘’Aridoculture et Cultures Oasisennes : Gestion des Ressources et Applications Biotechnologiques en Aridoculture et Cultures Sahariennes : perspectives pour un développement durable des zones arides
No
International
0330-7956
Médenine
Tunisia
[en] Staphylococcus sciuri ; Aphid honeydew ; Biological control ; Insect-bacteria interactions
[en] The chemical cues released by many insect species, including agricultural pests, are used by predators and parasitoids to locate their prey or host. For instance, aphids excrete honeydew, which contains bacteria that produce semiochemicals. Ladybeetles and hoverflies use these semiochemicals to locate the colonies of prey aphid species. One bacterium (Staphylococcus sciuri) has been identified in the honeydew of the pea aphid, Acyrthosiphon pisum. This bacterium is responsible for the production of kairomonal substances, which guide hoverflies to aphid colonies. In the present study, we cultivated S. sciuri, and used solid-phase microextraction (SPME) to confirm the ability of this bacterium to produce 3-methyl-2-butenal and 3-methyl-2-butenoic acid, which previous studies have demonstrated as being the two semiochemicals that exhibit kairomonal activity. We subsequently conducted field experiments to evaluate the efficiency of two solutions as biological products to control aphid populations inhabiting potato plants; the first solution contained a suspension of living S. sciuri, and the second solution contained a mixture of the two semiochemicals produced by this bacterium. While the semiochemical solution did not lead to a significant reduction in aphid number, potato plants treated with the S. sciuri solution were infested with 28% less aphids compared to untreated plants. This study demonstrates the potential of using naturally occurring bacteria as a form of biological control of aphid infestations in agricultural management.
http://hdl.handle.net/2268/178029
http://www.ira.agrinet.tn/imgcommon/files/RRA35_Session%205.pdf

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Alabietal2014.pdfPublisher postprint7.47 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.