Potato Virus Y infection hinders potato defence response and renders plants more vulnerable to Colorado potato beetle attack
Povzetek
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.
Ključne besede
insect midgut transcriptional response;gene expression;plant defence;volatile organic compounds;potato;
Podatki
| Jezik: | Angleški jezik |
|---|---|
| Leto izida: | 2014 |
| Tipologija: | 1.01 - Izvirni znanstveni članek |
| Organizacija: | NIB - Nacionalni inštitut za biologijo |
| UDK: | 581.2 |
| COBISS: |
3215695
|
| ISSN: | 0962-1083 |
| Št. ogledov: | 26 |
| Št. prenosov: | 22 |
| Ocena: | 0 (0 glasov) |
| Metapodatki: |
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Ostali podatki
| Sekundarne ključne besede: | Leptinotarsa decemlineata;Solanum tuberosum; |
|---|---|
| Strani: | str. 5378-5391 |
| Letnik: | ǂVol. ǂ23 |
| Zvezek: | ǂno. ǂ21 |
| Čas izdaje: | 2014 |
| DOI: | 10.1111/mec.12932 |
| ID: | 24644273 |
Priporočena dela:
Potato Virus Y infection hinders potato defence response and renders plants more vulnerable to Colorado potato beetle attack
2014,
ni podatka o podnaslovu
ǂA ǂmodel species for agricultural pest genomics
2018,
ǂthe ǂgenome of the Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)