Identifying aphid resistance in the ancestral wheat Triticum monococcum under field conditions.

A - Papers appearing in refereed journals

Simon, A. L., Caulfield, J. C., Hammond-Kosack, K. E., Field, L. M. and Aradottir, G. I. 2021. Identifying aphid resistance in the ancestral wheat Triticum monococcum under field conditions. Scientific Reports. 11, p. 13495. https://doi.org/10.1038/s41598-021-92883-9

AuthorsSimon, A. L., Caulfield, J. C., Hammond-Kosack, K. E., Field, L. M. and Aradottir, G. I.
Abstract

Wheat is an economically, socially, and nutritionally important crop, however, aphid infestation can often reduce wheat yield through feeding and virus transmission. Through field phenotyping, we investigated aphid resistance in ancestral wheat Triticum monococcum (L.). Aphid (Rhopalosiphum padi (L.), Sitobion avenae (F.) and Metopolophium dirhodum (Wlk.)) populations and natural enemy presence (parasitised mummified aphids, ladybird adults and larvae and lacewing eggs and larvae) on two naturally susceptible wheat varieties, Triticum aestivum (L.) var. Solstice and T. monococcum MDR037, and three potentially resistant genotypes T. monococcum MDR657, MDR045 and MDR049 were monitored across three years of field trials. Triticum monococcum MDR045 and MDR049 had smaller aphid populations, whereas MDR657 showed no resistance. Overall, natural enemy presence was positively correlated with aphid populations; however, MDR049 had similar natural enemy presence to MDR037 which is susceptible to aphid infestation. It is hypothesised that alongside reducing aphid population growth, MDR049 also confers indirect resistance by attracting natural enemies. The observed resistance to aphids in MDR045 and MDR049 has strong potential for introgression into commercial wheat varieties, which could have an important role in Integrated Pest Management strategies to reduce aphid populations and virus transmission.

Year of Publication2021
JournalScientific Reports
Journal citation11, p. 13495
Digital Object Identifier (DOI)https://doi.org/10.1038/s41598-021-92883-9
Web address (URL)https://www.nature.com/articles/s41598-021-92883-9
Open accessPublished as ‘gold’ (paid) open access
FunderDepartment of Environment, Food and Rural Affairs
Funder project or codeThe Wheat Genetic Improvement Network (WGIN) - Improving the environmental footprint of farming through crop genetics and targeted traits analysis
BBSRC [Check]
Publisher's version
Output statusPublished
Publication dates
Online29 Jun 2021
PublisherNature Publishing Group
ISSN2045-2322

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