Legacy effects of aboveground-belowground interactions

• Published in: Ecology letters Vol. 15; no. 8; pp. 813 - 821
• Main Authors: Kostenko, Olga, van de Voorde, Tess F. J., Mulder, Patrick P. J., van der Putten, Wim H., Martijn Bezemer, T.
• Format: Journal Article
• Language: English
• Published: Oxford Blackwell Publishing Ltd 01.08.2012; Blackwell
• Subjects: Animal and plant ecology; Animal behavior; Animal, plant and microbial ecology; Animals; Biological and medical sciences; Biomass; chemistry; ecology; Ecosystem; Feeding Behavior; feeding insect; foliar herbivory; Fundamental and applied biological sciences. Psychology; Fungal community; Fungi - growth & development; General aspects; grassland; Herbivores; herbivory; Insecta; Insects; Jacobaea vulgaris; Macroecology; parasitoid; plant; Plant ecology; Plant Roots; plant secondary chemistry; plant-soil feedback; plant-soil interactions; pyrrolizidine alkaloids; Senecio - chemistry; Senecio - growth & development; senecio-jacobaea; soil community; Soil Microbiology; Fungi; Fungal community; Parasitoid; plant-soil interactions; Herbivorous; Interaction; Jacobaea vulgaris; plant secondary chemistry; herbivory; Soil plant relation; plant-soil feedback
• ISSN: 1461-023X; 1461-0248
• DOI: 10.1111/j.1461-0248.2012.01801.x

Root herbivory can greatly affect the performance of aboveground insects via changes in plant chemistry. These interactions have been studied extensively in experiments where aboveground and belowground insects were feeding on the same plant. However, little is known about how aboveground and belowground organisms interact when they feed on plant individuals that grow after each other in the same soil. We show that feeding by aboveground and belowground insect herbivores on ragwort (Jacobaea vulgaris) plants exert unique soil legacy effects, via herbivore‐induced changes in the composition of soil fungi. These changes in the soil biota induced by aboveground and belowground herbivores of preceding plants greatly influenced the pyrrolizidine alkaloid content, biomass and aboveground multitrophic interactions of succeeding plants. We conclude that plant‐mediated interactions between aboveground and belowground insects are also important when they do not feed simultaneously on the same plant.