Plant chemical signalling affecting aphid-plant interactions
Aphid-plant interaction are complex processes where much still remains to be explored. This project tested the capacity of aphid-infested barley, Hordeum vulgare (L.), to induce defencelike responses in neighbouring plants via chemical signals, making them less acceptable to the bird cherry-oat a...
| Autor principal: | |
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| Formato: | Second cycle, A1E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2009
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| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/285/ |
| _version_ | 1855570168903630848 |
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| author | Qvarfordt, Erika |
| author_browse | Qvarfordt, Erika |
| author_facet | Qvarfordt, Erika |
| author_sort | Qvarfordt, Erika |
| collection | Epsilon Archive for Student Projects |
| description | Aphid-plant interaction are complex processes where much still remains to be explored. This
project tested the capacity of aphid-infested barley, Hordeum vulgare (L.), to induce defencelike
responses in neighbouring plants via chemical signals, making them less acceptable to the
bird cherry-oat aphid Rhopalosiphum padi (L.). Chemicals released into the air or the
rhizospshere from infested plants can potentially act as defence-inducing signals in
neighbouring plants. Results showed that both volatiles and rhizospshere extracts from
infested plants can make receiving plants less acceptable to R. padi. Despite a range of
experiments, the decisive factors behind the rhizospshere interaction could not be identified;
however a hypothesis for future study is that soil micro-organisms play a role. Feeding by a
different aphid species, Myzus persicae (Sulzer), made barley plants more acceptable to R.
padi in settling tests. Aphids were attracted to the odour of M. persicae-infested plants and
settled more often on plants that had been exposed to M. persicae-infested plants. This
between-species interaction in aphids has not been previously reported. Further research is
needed to gain a deeper understanding of the importance of plant-plant chemical signalling in
aphid ecology, for example responses at the molecular level and effects on trophic
interactions. This project has however provided the first step for these investigations in this
study system. |
| format | Second cycle, A1E |
| id | RepoSLU285 |
| institution | Swedish University of Agricultural Sciences |
| language | swe Inglés |
| publishDate | 2009 |
| publishDateSort | 2009 |
| record_format | eprints |
| spelling | RepoSLU2852012-10-05T14:07:46Z https://stud.epsilon.slu.se/285/ Plant chemical signalling affecting aphid-plant interactions Qvarfordt, Erika Plant ecology Pests of plants Aphid-plant interaction are complex processes where much still remains to be explored. This project tested the capacity of aphid-infested barley, Hordeum vulgare (L.), to induce defencelike responses in neighbouring plants via chemical signals, making them less acceptable to the bird cherry-oat aphid Rhopalosiphum padi (L.). Chemicals released into the air or the rhizospshere from infested plants can potentially act as defence-inducing signals in neighbouring plants. Results showed that both volatiles and rhizospshere extracts from infested plants can make receiving plants less acceptable to R. padi. Despite a range of experiments, the decisive factors behind the rhizospshere interaction could not be identified; however a hypothesis for future study is that soil micro-organisms play a role. Feeding by a different aphid species, Myzus persicae (Sulzer), made barley plants more acceptable to R. padi in settling tests. Aphids were attracted to the odour of M. persicae-infested plants and settled more often on plants that had been exposed to M. persicae-infested plants. This between-species interaction in aphids has not been previously reported. Further research is needed to gain a deeper understanding of the importance of plant-plant chemical signalling in aphid ecology, for example responses at the molecular level and effects on trophic interactions. This project has however provided the first step for these investigations in this study system. 2009-06-18 Second cycle, A1E NonPeerReviewed application/pdf swe https://stud.epsilon.slu.se/285/1/qvarfordt_e_090622.pdf Qvarfordt, Erika, 2009. Plant chemical signalling affecting aphid-plant interactions . Second cycle, A1E. Uppsala: (LTJ, LTV) > Horticulture (until 121231) <https://stud.epsilon.slu.se/view/divisions/4810.html> urn:nbn:se:slu:epsilon-4-96 eng |
| spellingShingle | Plant ecology Pests of plants Qvarfordt, Erika Plant chemical signalling affecting aphid-plant interactions |
| title | Plant chemical signalling affecting aphid-plant
interactions |
| title_full | Plant chemical signalling affecting aphid-plant
interactions |
| title_fullStr | Plant chemical signalling affecting aphid-plant
interactions |
| title_full_unstemmed | Plant chemical signalling affecting aphid-plant
interactions |
| title_short | Plant chemical signalling affecting aphid-plant
interactions |
| title_sort | plant chemical signalling affecting aphid-plant
interactions |
| topic | Plant ecology Pests of plants |
| url | https://stud.epsilon.slu.se/285/ https://stud.epsilon.slu.se/285/ |