New frontiers in belowground ecology for plant protection from root-feeding insects

Johnson, Scott N.; Benefer, Carly M.; Frew, Adam; Griffiths, Bryan S.; Hartley, Susan E.; Karley, Alison J.; Rasmann, Sergio; Schumann, Mario; Sonnemann, Illja; Robert, Christelle A. M. (2016). New frontiers in belowground ecology for plant protection from root-feeding insects. Applied Soil Ecology, 108, pp. 96-107. Elsevier 10.1016/j.apsoil.2016.07.017

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Herbivorous insect pests living in the soil represent a significant challenge to food security given their persistence, the acute damage they cause to plants and the difficulties associated with managing their populations. Ecological research effort into rhizosphere interactions has increased dramatically in the last decade and we are beginning to understand, in particular, the ecology of how plants defend themselves against soil-dwelling pests. In this review, we synthesise information about four key ecological mechanisms occurring in the rhizosphere or surrounding soil that confer plant protection against root herbivores. We focus on root tolerance, root resistance via direct physical and chemical defences, particularly via acquisition of silicon-based plant defences, integration of plant mutualists (microbes and entomopathogenic nematodes, EPNs) and the influence of soil history and feedbacks. Their suitability as management tools, current limitations for their application, and the opportunities for development are evaluated. We identify opportunities for synergy between these aspects of rhizosphere ecology, such as mycorrhizal fungi negatively affecting pests at the root-interface but also increasing plant uptake of silicon, which is also known to reduce herbivory. Finally, we set out research priorities for developing potential novel management strategies.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Biotic Interactions

UniBE Contributor:

Robert, Christelle Aurélie Maud

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0929-1393

Publisher:

Elsevier

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

21 Dec 2016 08:43

Last Modified:

28 Feb 2018 10:42

Publisher DOI:

10.1016/j.apsoil.2016.07.017

Uncontrolled Keywords:

Ecological applications; Belowground herbivores; Rhizosphere; Root-feeding insects; Root herbivory; Soils

BORIS DOI:

10.7892/boris.90561

URI:

https://boris.unibe.ch/id/eprint/90561

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