Journal Article

Changes in phenols composition and activity of phenylalanine-ammonia lyase in apples after fungal infections

Opatova, H.,Vysoka Skola Chemicko-technologicka, Prague (Czech Republic). Ustav Konzervace Potravin a Technologie Masa, Schovankova, J.,Vysoka Skola Chemicko-technologicka, Prague (Czech Republic). Ustav Konzervace Potravin a Technologie Masa

2011

Overview

The defensive reaction of apple cultivar Idared was studied after inoculation with three different pathogens (Penicillium expansum, Monilinia fructigena, Gloeosporium spp.). Changes in phenolic concentrations and activity of phenylalanine-ammonia lyase were determined after 7, 14, and 21 days after the inoculation. Significant differences were discovered in the progress of rotting after the inoculation. The increase in phenols concentrations and in phenylalanine-ammonia lyase activity varied in the place of fungal attack, in the tissues around rotten zone and in the healthy part. The response to the infection was different in the fruit peel and flesh. Very good correlation was found between the activity of phenylalanine-ammonia lyase and total phenol concentration (r = 0.76-0.98).

• Publisher: Czech Academy of Agricultural Sciences (CAAS),Czech Academy of Agricultural Sciences
• Subject: ACIDE CAFEIQUE / ACIDE CHLOROGENIQUE / ACIDO CAFEICO / ACIDO CLOROGENICO / ACTIVIDAD ENZIMATICA / ACTIVITE ENZYMATIQUE / AGENT PATHOGENE / ALMACENAMIENTO / Ammonia / AMONIO FENILALANINA LIASA / APPLES / CAFFEIC ACID / CATECHIN / CATECHINE / CATEQUINA / CHLOROGENIC ACID / COMPOSE PHENOLIQUE / COMPUESTOS FENOLICOS / CONTENIDO FENOLICO / Cultivars / DEFENCE MECHANISMS / DURACION / DURATION / DUREE / ENFERMEDADES DE LAS PLANTAS / ENZYME ACTIVITY / ESPECTROMETRIA / EXPERIMENTAL INFECTION / fruit peels / fungal pathogens / Fungi / GLOEOSPORIUM / http://www.fao.org/aos/agrovoc#c_2412 / http://www.fao.org/aos/agrovoc#c_25446 / http://www.fao.org/aos/agrovoc#c_2604 / http://www.fao.org/aos/agrovoc#c_29522 / http://www.fao.org/aos/agrovoc#c_31796 / http://www.fao.org/aos/agrovoc#c_32441 / http://www.fao.org/aos/agrovoc#c_3280 / http://www.fao.org/aos/agrovoc#c_33791 / http://www.fao.org/aos/agrovoc#c_33963 / http://www.fao.org/aos/agrovoc#c_35269 / http://www.fao.org/aos/agrovoc#c_36179 / http://www.fao.org/aos/agrovoc#c_36534 / http://www.fao.org/aos/agrovoc#c_3879 / http://www.fao.org/aos/agrovoc#c_4473 / http://www.fao.org/aos/agrovoc#c_4555 / http://www.fao.org/aos/agrovoc#c_541 / http://www.fao.org/aos/agrovoc#c_5630 / http://www.fao.org/aos/agrovoc#c_5772 / http://www.fao.org/aos/agrovoc#c_5773 / http://www.fao.org/aos/agrovoc#c_5962 / http://www.fao.org/aos/agrovoc#c_6667 / http://www.fao.org/aos/agrovoc#c_7283 / http://www.fao.org/aos/agrovoc#c_7427 / http://www.fao.org/aos/agrovoc#c_7566 / INFECCION EXPERIMENTAL / INFECTION EXPERIMENTALE / INOCULACION / INOCULATION / LIASAS / LYASE / LYASES / MALADIE DES PLANTES / Malus domestica / MALUS PUMILA / MANZANA / MECANISME DE DEFENSE / MECANISMOS DE DEFENSA / MONILINIA / Monilinia fructigena / ORGANISMOS PATOGENOS / PATHOGENS / PENICILLIUM EXPANSUM / PHENOLIC COMPOUNDS / PHENOLIC CONTENT / Phenols / Phenylalanine / PHENYLALANINE AMMONIA LYASE / PLANT DISEASES / PLANT RESPONSE / PODREDUMBRES / POMME / postharvest rot / POURRITURE / REPONSE DE LA PLANTE / RESPUESTA DE LA PLANTA / ROTS / SINTOMAS / SPECTROMETRIE / SPECTROMETRY / STOCKAGE / STORAGE / SYMPTOME / SYMPTOMS / TENEUR EN PHENOLS