Plant defense responses induced by phytoseiid predatory mites
The ability of phytoseiids for inducing plant defensive responses was studied. First, the activation of citrus defense pathways in two rootstocks with different resistance to Tetranychus urticae, Citrus aurantium and C. reshni, was analysed. Metabolomic analyses showed that the jasmonic acid, salicy...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/667321 |
| Acceso en línea: | http://hdl.handle.net/10803/667321 http://dx.doi.org/10.6035/14104.2019.241465 |
| Access Level: | acceso abierto |
| Palabra clave: | Tetranychus urticae Euseius stipulatus Neoseiulus californicus Phytoseiulus persimilis Volátiles de planta Defensa inducida Agricultura, ramaderia, pesca, silvicultura i veterinària 631 632 |
| Sumario: | The ability of phytoseiids for inducing plant defensive responses was studied. First, the activation of citrus defense pathways in two rootstocks with different resistance to Tetranychus urticae, Citrus aurantium and C. reshni, was analysed. Metabolomic analyses showed that the jasmonic acid, salicylic acid and flavonoids defense pathways were modified depending on plant genotype and phytoseiid diet specialization. Second, attraction and repellence of volatiles released by citrus infested by phytoseiids was studied. This depended on the species of the predator triggering these responses. We also carried out choice tests without plants and observed that phytoseiids were repellent for T. urticae. Furthermore, the volatiles released by each phytoseiid were characterized and included different organic compounds from green leaf volatiles to monoterpenes. Finally, the reproduction of the three phytoseiids when feeding on T. urticae obtained from two different rootstocks was studied. We concluded that phytoseiids can induce different plant defensive responses. |
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