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Neuhaus-Harr, A.* ; Ojeda-Prieto, L.* ; Zhang, X.* ; Schnitzler, J.-P. ; Weisser, W.W.* ; Heinen, R.*

Aphid colony size in Tansy is affected by plant chemical composition but not by belowground herbivory.

J. Chem. Ecol. 51:63 (2025)
Verlagsversion Forschungsdaten DOI PMC
Open Access Gold (Paid Option)
Creative Commons Lizenzvertrag
Plants are hosts for above- and belowground insect communities that can influence each other via above-belowground plant-physiological dynamics. To mediate interactions, plants produce secondary metabolites, including terpenoids, and mixtures can differ intraspecifically. While intraspecific variation in plant chemistry gained increased interest, the extent to which intraspecific differences in plant chemistry mediate above-belowground interactions of herbivores remains unclear. We used a full factorial design with six distinct terpenoid chemotypes, differing in their chemical diversity of tansy (Tanacetum vulgare). We exposed these to the aboveground herbivore Macrosiphoniella tanacetaria (Hemiptera: Aphididae), the belowground herbivore Agriotes sp. (Coleoptera: Elateridae), no herbivore or both herbivores, to determine if chemotypes or the chemical diversity of plant compounds affected aphid performance and if the interactions between herbivores were mediated by the chemical profile. We found that aphid colony size differed between chemotypes, with the strongest colony increase over time in a mixed chemotype, and the weakest in a β-thujone chemotype. Root herbivory had no effect on aphid colony size, regardless of the chemotype. Aphid colony size was positively correlated with terpenoid evenness, but not with terpenoid Shannon diversity, terpenoid richness, or relative terpenoid concentration. Tansy chemotypes differed in their morphological responses (final plant height and final plant dry weight) and average leaf chlorophyll content to aboveground herbivory, whereas belowground herbivory exerted minimal impacts. Overall, our results show that intraspecific variation in terpenoid profiles directly modify ecological interactions on a plant, with plant chemistry mediating aphid performance and chemotypes differing in their morphological responses to herbivory.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Tanacetum Vulgare ; Herbivory ; Intraspecific Chemodiversity ; Plant–insect Interactions ; Terpenoids; Mediated Interactions; Trade-offs; Defense; Growth; Performance; Elateridae; Metabolism; Preference; Chemotype; Biology
ISSN (print) / ISBN 0098-0331
e-ISSN 1573-1561
Zeitschrift Journal of Chemical Ecology
Quellenangaben Band: 51, Heft: 3, Seiten: , Artikelnummer: 63 Supplement: ,
Verlag Springer
Verlagsort Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Environmental Simulation (EUS)
Förderungen German research foundation DFG
Projekt DEAL