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Daniel J. Leybourne
Researcher at University of Dundee
Publications - 19
Citations - 153
Daniel J. Leybourne is an academic researcher from University of Dundee. The author has contributed to research in topics: Aphid & Rhopalosiphum padi. The author has an hindex of 6, co-authored 16 publications receiving 85 citations. Previous affiliations of Daniel J. Leybourne include ADAS & James Hutton Institute.
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Journal ArticleDOI
The price of protection: a defensive endosymbiont impairs nymph growth in the bird cherry-oat aphid, Rhopalosiphum padi.
Daniel J. Leybourne,Daniel J. Leybourne,Jorunn I. B. Bos,Jorunn I. B. Bos,Tracy A. Valentine,Alison J. Karley +5 more
TL;DR: It is suggested that deploying resistance traits in barley will favor the fittest R. padi genotypes, but symbiont‐infected individuals will be favored when parasitoids are abundant, although these aphids will not achieve optimal performance on a poor quality host plant.
Journal ArticleDOI
Defence gene expression and phloem quality contribute to mesophyll and phloem resistance to aphids in wild barley.
Daniel J. Leybourne,Daniel J. Leybourne,Tracy A. Valentine,Jean Robertson,Estefania Perez‐Fernandez,Angela M Main,Alison J. Karley,Jorunn I. B. Bos,Jorunn I. B. Bos +8 more
TL;DR: It is found that partial resistance in Hsp5 to R. padi extends to two other aphid pests of grasses, and plant traits that may contribute to broad-spectrum partial resistance to aphids in barley are highlighted.
Journal ArticleDOI
A fitness cost resulting from Hamiltonella defensa infection is associated with altered probing and feeding behaviour in Rhopalosiphum padi.
Daniel J. Leybourne,Daniel J. Leybourne,Tracy A. Valentine,Jorunn I. B. Bos,Jorunn I. B. Bos,Alison J. Karley +5 more
TL;DR: This study provides the first demonstration of mechanisms at the aphid–plant interface contributing to physiological effects of endosymbiont infection on aphid fitness, through altered feeding processes on different quality host plants.
Journal ArticleDOI
Plant resistance in different cell layers affects aphid probing and feeding behaviour during non-host and poor-host interactions.
Carmen Escudero-Martinez,Carmen Escudero-Martinez,Daniel J. Leybourne,Daniel J. Leybourne,Jorunn I. B. Bos,Jorunn I. B. Bos +5 more
TL;DR: The data suggest that plant resistance to aphids in non-host and poor-host interactions with these aphid species likely resides in different plant cell layers, and future work will take into account specific cell layers where resistances are based to improve crop resistance.
Journal ArticleDOI
Drought has negative consequences on aphid fitness and plant vigor: Insights from a meta-analysis.
Daniel J. Leybourne,Daniel J. Leybourne,Katharine F. Preedy,Tracy A. Valentine,Jorunn I. B. Bos,Jorunn I. B. Bos,Alison J. Karley +6 more
TL;DR: In this article, the authors used qualitative and quantitative synthesis techniques to determine whether drought stress has a negative, positive or null effect on aphid fitness and examined these effects in relation to (a) aphid biology, (b) geographical region, and (c) host plant biology.