| Title: | Potato Virus Y infection hinders potato defence response and renders plants more vulnerable to Colorado potato beetle attack |
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| Authors: | ID Petek, Marko (Author)
ID Rotter, Ana (Author)
ID Kogovšek, Polona (Author)
ID Baebler, Špela (Author)
ID Mithöfer, Axel (Author)
ID Gruden, Kristina (Author) |
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| Files: |  PDF - Presentation file, download (959,76 KB)
MD5: 99D53380FC84FD7FE200020CB342CF4A
 URL - Source URL, visit https://doi.org/10.1111/mec.12932
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  NIB - National Institute of Biology
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| Abstract: | In the field, plants are challenged by more than one biotic stressor at the same time. In this study, the molecular interactions between potato (Solanum tuberosum L.), Colorado potato beetle (Leptinotarsa decemlineata Say; CPB) and Potato virus YNTN (PVYNTN) were investigated through analyses of gene expression in the potato leaves and the gut of the CPB larvae, and of the release of potato volatile compounds. CPB larval growth was enhanced when reared on secondary PVYNTN-infected plants, which was linked to decreased accumulation of transcripts associated with the antinutritional properties of potato. In PVYNTN-infected plants, ethylene signalling pathway induction and induction of auxin response transcription factors were attenuated, while no differences were observed in jasmonic acid (JA) signalling pathway. Similarly to rearing on virus-infected plants, CPB larvae gained more weight when reared on plants silenced in JA receptor gene (coi1). Although herbivore-induced defence mechanism is regulated predominantly by JA, response in coi1-silenced plants only partially corresponded to the one observed in PVYNTN-infected plants, confirming the role of other plant hormones in modulating this response. The release of β-barbatene and benzyl alcohol was different in healthy and PVYNTN-infected plants before CPB larvae infestation, implicating the importance of PVYNTN infection in plant communication with its environment. This was reflected in gene expression profiles of neighbouring plants showing different degree of defence response. This study thus contributes to our understanding of plant responses in agro-ecosystems. |
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| Keywords: | insect midgut transcriptional response, gene expression, plant defence, volatile organic compounds, potato |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 22.09.2014 |
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| Year of publishing: | 2014 |
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| Number of pages: | str. 5378-5391 |
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| Numbering: | Vol. 23, no. 21 |
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| PID: | 20.500.12556/DiRROS-20008  |
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| UDC: | 581.2 |
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| ISSN on article: | 0962-1083 |
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| DOI: | 10.1111/mec.12932 |
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| COBISS.SI-ID: | 3215695 |
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| Publication date in DiRROS: | 02.08.2024 |
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| Views: | 332 |
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| Downloads: | 187 |
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| Metadata: |    |
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