A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin

Foraging behavior of root feeding organisms strongly affects plant-environment-interactions and ecosystem processes. However, the impact of plant chemistry on root herbivore movement in the soil is poorly understood. Here, we apply a simple technique to trace the movement of soil-dwelling insects in...

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Main Authors: Bont, Zoe, Arce, Carla, Huber, Meret, Huang, Wei, Mestrot, Adrien, Sturrock, Craig, Erb, Matthais
Format: Article
Published: Springer 2017
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Online Access:https://eprints.nottingham.ac.uk/44880/
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author Bont, Zoe
Arce, Carla
Huber, Meret
Huang, Wei
Mestrot, Adrien
Sturrock, Craig
Erb, Matthais
author_facet Bont, Zoe
Arce, Carla
Huber, Meret
Huang, Wei
Mestrot, Adrien
Sturrock, Craig
Erb, Matthais
author_sort Bont, Zoe
building Nottingham Research Data Repository
collection Online Access
description Foraging behavior of root feeding organisms strongly affects plant-environment-interactions and ecosystem processes. However, the impact of plant chemistry on root herbivore movement in the soil is poorly understood. Here, we apply a simple technique to trace the movement of soil-dwelling insects in their habitats without disturbing or restricting their interactions with host plants. We tagged the root feeding larvae of Melolontha melolontha with a copper ring and repeatedly located their position in relation to their preferred host plant, Taraxacum officinale, using a commercial metal detector. This method was validated and used to study the influence of the sesquiterpene lactone taraxinic acid β-D-glucopyranosyl ester (TA-G) on the foraging of M. melolontha. TA-G is stored in the latex of T. officinale and protects the roots from herbivory. Using behavioral arenas with TA-G deficient and control plants, we tested the impact of physical root access and plant distance on the effect of TA-G on M. melolontha. The larvae preferred TA-G deficient plants to control plants, but only when physical root contact was possible and the plants were separated by 5 cm. Melolontha melolontha showed no preference for TA-G deficient plants when the plants were grown 15 cm apart, which may indicate a trade-off between the cost of movement and the benefit of consuming less toxic food. We demonstrate that M. melolontha integrates host plant quality and distance into its foraging patterns and suggest that plant chemistry affects root herbivore behavior in a plant-density dependent manner. © 2017, Springer Science+Business Media New York.
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spelling nottingham-448802020-05-04T18:38:02Z https://eprints.nottingham.ac.uk/44880/ A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin Bont, Zoe Arce, Carla Huber, Meret Huang, Wei Mestrot, Adrien Sturrock, Craig Erb, Matthais Foraging behavior of root feeding organisms strongly affects plant-environment-interactions and ecosystem processes. However, the impact of plant chemistry on root herbivore movement in the soil is poorly understood. Here, we apply a simple technique to trace the movement of soil-dwelling insects in their habitats without disturbing or restricting their interactions with host plants. We tagged the root feeding larvae of Melolontha melolontha with a copper ring and repeatedly located their position in relation to their preferred host plant, Taraxacum officinale, using a commercial metal detector. This method was validated and used to study the influence of the sesquiterpene lactone taraxinic acid β-D-glucopyranosyl ester (TA-G) on the foraging of M. melolontha. TA-G is stored in the latex of T. officinale and protects the roots from herbivory. Using behavioral arenas with TA-G deficient and control plants, we tested the impact of physical root access and plant distance on the effect of TA-G on M. melolontha. The larvae preferred TA-G deficient plants to control plants, but only when physical root contact was possible and the plants were separated by 5 cm. Melolontha melolontha showed no preference for TA-G deficient plants when the plants were grown 15 cm apart, which may indicate a trade-off between the cost of movement and the benefit of consuming less toxic food. We demonstrate that M. melolontha integrates host plant quality and distance into its foraging patterns and suggest that plant chemistry affects root herbivore behavior in a plant-density dependent manner. © 2017, Springer Science+Business Media New York. Springer 2017-03-16 Article PeerReviewed Bont, Zoe, Arce, Carla, Huber, Meret, Huang, Wei, Mestrot, Adrien, Sturrock, Craig and Erb, Matthais (2017) A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin. Journal of Chemical Ecology, 43 (3). pp. 295-306. ISSN 1573-1561 Foraging Imaging Melolontha melolontha Root herbivore Tag-and-trace Taraxacum officinale https://link.springer.com/article/10.1007%2Fs10886-017-0830-3 doi:10.1007/s10886-017-0830-3 doi:10.1007/s10886-017-0830-3
spellingShingle Foraging
Imaging
Melolontha melolontha
Root herbivore
Tag-and-trace
Taraxacum officinale
Bont, Zoe
Arce, Carla
Huber, Meret
Huang, Wei
Mestrot, Adrien
Sturrock, Craig
Erb, Matthais
A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin
title A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin
title_full A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin
title_fullStr A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin
title_full_unstemmed A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin
title_short A herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin
title_sort herbivore tag-and-trace system reveals contact- and density-dependent repellence of a root toxin
topic Foraging
Imaging
Melolontha melolontha
Root herbivore
Tag-and-trace
Taraxacum officinale
url https://eprints.nottingham.ac.uk/44880/
https://eprints.nottingham.ac.uk/44880/
https://eprints.nottingham.ac.uk/44880/