Reference : Aphid-host plant interactions: Does aphid honeydew exactly reflect the host plant amino ...
Scientific journals : Article
Life sciences : Entomology & pest control
http://hdl.handle.net/2268/93573
Aphid-host plant interactions: Does aphid honeydew exactly reflect the host plant amino acid composition?
English
Leroy, Pascal [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Wathelet, Bernard mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Sabri, Ahmed mailto [Université de Liège - ULg > > Centre Wallon de biologie industrielle >]
Francis, Frédéric mailto [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Verheggen, François mailto [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Capella, Quentin [ > > ]
Thonart, Philippe mailto [Université de Liège - ULg > Département des sciences de la vie > Biochimie et microbiologie industrielles >]
Haubruge, Eric mailto [Université de Liège - ULg > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
28-Feb-2011
Arthropod-Plant Interactions
Springer
5
1-7
Yes
International
1872-8855
1872-8847
[en] amino acids ; phloem sap ; xylem sap ; aphid ; honeydew
[en] Plants provide aphids with unbalanced and low concentrations of amino acids. Likely, intracellular symbionts improve the aphid nutrition by participating to the synthesis of essential amino acids. To compare the aphid amino acid uptakes from the host plant and the aphids amino acid excretion into the honeydew, host plant exudates (phloem + xylem) from infested and uninfested Vicia faba L. plants were compared to the honeydew produced by two aphid species (Acyrthosiphon pisum Harris and Megoura viciae Buckton) feeding on V. faba. Our results show that an aphid infestation modifies the amino acid composition of the infested broad bean plant since the global concentration of amino acids significantly increased into the host plant in response to aphid infestations. Specifically, the concentrations of two amino acids glutamine and asparagine were strongly enhanced. The amino acid profiles from honeydews were similar for the two aphid species, but the concentrations found into the honeydews were generally lower than those measured in the exudates of infested plants (aphids uptakes). This work also highlights that aphids take large amounts of amino acids into the host plant, especially glutamine and asparagine which are converted into glutamic and aspartic acids but also into other essential amino acids. The amino acid profiles differed between the host plant exudates and the aphid excretion product. Finally, this study highlights that the pea aphid - a “specialist” for the V. faba host plant - induced more important modifications into the host plant amino acid composition than the “generalist” aphid M. viciae.
Région wallonne
Solaphid
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/93573
10.1007/s11829-011-9128-5

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