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, 46 (4), 333-40

Benzothiadiazole (BTH) Induces Resistance to Pepper Golden Mosaic Virus (PepGMV) in Pepper (Capsicum Annuum L.)

Benzothiadiazole (BTH) Induces Resistance to Pepper Golden Mosaic Virus (PepGMV) in Pepper (Capsicum Annuum L.)

D L Trejo-Saavedra et al. Biol Res.

Abstract

Pepper is an economically important crop in many countries around the world but it is susceptible to many diseases. In Mexico, diseases caused by bipartite begomoviruses have emerged as important problems in pepper. Several control strategies have been explored wiht little success; most of them are based on the avoidance of virus transmission and the breeding for resistance. Abiotic inducers can act at various points in the signaling pathways involved in disease resistance, providing long-lasting, wide-spectrum resistance. Benzothiadiazole (BTH) shares the property of activating the systemic acquired resistance pathway downstream from the SA signaling. In this work, resistance to PepGMV infection was induced in pepper plants by activating the SA pathway using BTH treatment. The resistance was characterized by evaluating symptom appearance, virus accumulation and viral movement. Our results showed that BTH could be an attractive alternative to induce geminivirus resistance in pepper plants without a significant damage of the fruit quality and productivity.

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