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Articles

PHENOLIC PROFILE AND PEROXIDASE ACTIVITY IN APPLE LEAVES AFTER ERWINIA AMYLOVORA INFECTION AND BTH TREATMENT

Article number
896_72
Pages
489 – 494
Language
English
Abstract
BTH (S-methylbenzo-1,2,3-thiadiazole-7-carbothiate) in the commercial preparation BION is an elicitor for resistance to fire blight (Erwinia amylovora) in apple.
We determined the activity of ferulic acid (POX-f) peroxidase, phenolic acids and flavonoids in apple leaves treated with BTH before inoculation with E. amylovora. BTH treatment changed the response in plant-pathogen interaction by influencing POX-f activity and metabolism of phenols.
Phenolic acids, rutin and phloretin may be involved in defensive reactions of apple leaves against E. amylovora. BTH also enhanced the levels of chlorogenic and o-coumaric acids more than infection by the pathogen alone and decreased phloridzin content.
A decline of phloretin after BTH treatment was observed.
BTH changed phenol synthesis and induced POX-f, phloridzin, rutin, chlorogenic and o-coumaric acids for enhanced resistance of apple to E. amylovora.

Publication
XII International Workshop on Fire Blight
Authors
M. Sklodowska, E. Gajewska, E. Kuzniak, M. Wielanek, A. Mikiciński, P. Sobiczewski
Keywords
fire blight, Malus, ferulic acid-peroxidase, phenolic acids, flavonoids, S-methylbenzo-1,2,3-thiadiazole-7-carbothiate
Full text
https://doi.org/10.17660/ActaHortic.2011.896.72
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