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

Article

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

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

ERA Journal ID5246
Article CategoryArticle
AuthorsJohnson, Scott N. (Author), Benefer, Carly M. (Author), Frew, Adam (Author), Griffiths, Bryan S. (Author), Hartley, Susan E. (Author), Karley, Alison J. (Author), Rasmann, Sergio (Author), Schumann, Mario (Author), Sonnemann, Illja (Author) and Robert, Christelle A. M. (Author)
Journal TitleApplied Soil Ecology
Journal Citation108, pp. 96-107
Number of Pages12
Year2016
PublisherElsevier
Place of PublicationNetherlands
ISSN0929-1393
1873-0272
Digital Object Identifier (DOI)https://doi.org/10.1016/j.apsoil.2016.07.017
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0929139316302116?via%3Dihub
Abstract

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.

Keywordsecological applications; belowground herbivores; rhizosphere; root-feeding insects; root herbivory; soils
ANZSRC Field of Research 2020410603. Soil biology
310899. Plant biology not elsewhere classified
410404. Environmental management
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Byline AffiliationsWestern Sydney University
Plymouth University, United Kingdom
University of Western Sydney
SRUC Crop and Soil Systems Research Group, Scotland
University of York, United Kingdom
James Hutton Institute, United Kingdom
University of Neuchatel, Switzerland
Georg August University of Gottingen, Germany
University of Bern, Switzerland
Institution of OriginUniversity of Southern Queensland
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