Browse by author
Lookup NU author(s): Dr Natalie Ferry, Stylianos Stavroulakis, Susanna Guan, Gillian Davison, Dr Rachel Down, Professor Angharad MR GatehouseORCiD
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
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.
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
URL: http://dx.doi.org/10.1002/pmic.200900801
DOI: 10.1002/pmic.200900801
Altmetrics provided by Altmetric
