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Molecular interactions between wheat and cereal aphid (Sitobion avenae): Analysis of changes to the wheat proteome

Lookup NU author(s): Dr Natalie Ferry, Stylianos Stavroulakis, Susanna Guan, Gillian Davison, Dr Rachel Down, Professor Angharad MR GatehouseORCiD


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Aphids are major insect pests of cereal crops, acting as virus vectors as well as causing direct damage. The responses of wheat to infestation by cereal aphid (Sitobion avenae) were investigated in a proteomic analysis. Approximately, 500 protein spots were reproducibly detected in the extracts from leaves of wheat seedlings after extraction and 2-DE. Sixty-seven spots differed significantly between control and infested plants following 24 h of aphid feeding, with 27 and 11 up-regulated, and 8 and 21 down-regulated, in local or systemic tissues, respectively. After 8 days, 80 protein spots differed significantly between control and aphid treatments with 13 and 18 up-regulated and 27 and 22 down-regulated in local or systemic tissues, respectively. As positive controls, plants were treated with salicylic acid or methyl jasmonate; 81 and 37 differentially expressed protein spots, respectively, were identified for these treatments. Approximately, 50% of differentially expressed protein spots were identified by PMF, revealing that the majority of proteins altered by aphid infestation were involved in metabolic processes and photosynthesis. Other proteins identified were involved in signal transduction, stress and defence, antioxidant activity, regulatory processes, and hormone responses. Responses to aphid attack at the proteome level were broadly similar to basal non-specific defence and stress responses in wheat, with evidence of down-regulation of insect-specific defence mechanisms, in agreement with the observed lack of aphid resistance in commercial wheat lines.

Publication metadata

Author(s): Ferry N, Stavroulakis S, Guan WZ, Davison GM, Bell HA, Weaver RJ, Down RE, Gatehouse JA, Gatehouse AMR

Publication type: Article

Publication status: Published

Journal: Proteomics

Year: 2011

Volume: 11

Issue: 10

Pages: 1985-2002

Print publication date: 18/04/2011

ISSN (print): 1615-9853

ISSN (electronic): 1615-9861

Publisher: Wiley - V C H Verlag GmbH & Co. KGaA


DOI: 10.1002/pmic.200900801


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Funder referenceFunder name
Yorkshire Agriculture Society
British Wheat Breeders
BB/E006280/1BBSRC (Crop Science Initiative)