Induction of resistance in pepper against Verticillium dahliae by the application of PO212
- Lois, Marta
- José Díaz Varela Doktorvater/Doktormutter
- Javier Veloso Freire Co-Doktorvater
Universität der Verteidigung: Universidade da Coruña
Fecha de defensa: 10 von Dezember von 2019
- Inmaculada Larena Präsident/in
- Néstor Carrillo Barral Sekretär/in
- Paula Baptista Vocal
Art: Dissertation
Zusammenfassung
The biological control agent (BCA) Penicillium rubens (formerly Penicillium oxalicum) strain 212 (PO212) was employed as inducer of resistance in pepper (Capsicum annuum L.) against the vascular pathogen Verticillium dahliae Kleb. PO212 protected pepper plants against V. dahliae. The observed induced resistance in pepper involves cell wall reinforcement with an increase in lignin as well as other defenses as PR proteins. Signaling of the defense response triggered in pepper or tomato by PO212 is mediated by hydrogen peroxide, salicylic acid, ethylene and jasmonic acid. Induced resistance is one of the mechanisms by which PO212 protects pepper against V. dahliae. The combination of PO212 with the fungal BCAs known as arbuscular mycorrhizal fungi (AMF) can improve biological control effectiveness. Soil suppressiveness to V. dahliae and the oomycete Phytophthora capsici in pepper greenhouses appears to be related with AMF community.