Phenylalanine Ammonia Lyase Activity in Stem of Pepper (Capsicum annuum L.) Infected by Phytophthora capsici L.

Abstract

In this study, PAL activity in stems of pepper (Capsicum annuum L.) plants infected by the root rot pathogen Phytophthora capsici-22 in a resistant (PM-702) and two susceptible (Kahramanmaraş-Hot (KM-Hot) and Demre-8) cultivar were studied. The response of the PAL activity in the resistant cultivar was faster and higher than in the susceptible cultivars (p < 0.01). The increase in production of  PAL upon Phytophthora capsici-22 were higher in the infected plants compared to the non-infected (control) plants (p < 0.01) . An early induction of PAL was observed in the stems of three peppers infected with P.capsici within two days.

Keywords

• Capsicum annuum
• defence
• pepper
• phenylalanine ammonia lyase
• Phytophthora capsici

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