Unravelling mycorrhiza-induced wheat susceptibility to the English grain aphid Sitobion avenae

A - Papers appearing in refereed journals

Simon, A. L., Welham, P. A. D., Aradottir, G. I. and Gange, A. C. 2017. Unravelling mycorrhiza-induced wheat susceptibility to the English grain aphid Sitobion avenae. Scientific Reports. 7, p. 46497. https://doi.org/10.1038/srep46497

AuthorsSimon, A. L., Welham, P. A. D., Aradottir, G. I. and Gange, A. C.
Abstract

Arbuscular mycorrhizal (AM) fungi are root symbionts that can increase or decrease aphid growth rates and reproduction, but the reason by which this happens is unknown. To investigate the underlying mechanisms of this interaction, we examined the effect of AM fungi on the English Grain aphid (Sitobion avenae) development, reproduction, attraction, settlement and feeding behaviour on two naturally susceptible varieties Triticum aestivum (L.) variety Solstice and T. monococcum MDR037, and two naturally resistant lines, T. monococcum MDR045 and MDR049. Mycorrhizal colonisation increased the attractiveness of T. aestivum var. Solstice to aphids, but there was no effect on aphid development on this variety. Using the Electrical Penetration Graph (EPG) technique, we found that mycorrhizal colonisation increased aphid phloem feeding on T. monococcum MDR037 and MDR045, colonisation also increased growth rate and reproductive success of S. avenae on these varieties. Mycorrhizas increased vascular bundle size, demonstrating that these fungi can influence plant anatomy. We discuss if and how this could be related to an enhanced success rate in phloem feeding in two varieties. Overall, we present and discuss how mycorrhizal fungi can affect the feeding behaviour of S. avenae in wheat, inducing susceptibility in a resistant variety.

Year of Publication2017
JournalScientific Reports
Journal citation7, p. 46497
Digital Object Identifier (DOI)https://doi.org/10.1038/srep46497
PubMed ID28406246
PubMed Central IDPMC5390270
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
Department of Environment, Food and Rural Affairs
Funder project or codeWGIN
Wheat Improvement Strategic Programme
Enhancing diversity in UK wheat through a public sector prebreeding programme
Publisher's version
Copyright license
CC BY
Output statusPublished
Publication dates
Online13 Apr 2017
Publication process dates
Accepted17 Mar 2017
PublisherSpringer Nature
Nature Publishing Group
Copyright licenseCC BY
ISSN2045-2322

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