Effect of Erwinia amylovora infection on peroxidase enzyme activity in resistant apple cultivars | Zendy

Kenneth Kasa | Zendy; M. Hevesi | Zendy; M. Tóth | Zendy; É. Stefanovits-Bányai | Zendy

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Effect of Erwinia amylovora infection on peroxidase enzyme activity in resistant apple cultivars

Author(s) -

Kenneth Kasa,

M. Hevesi,

M. Tóth,

É. Stefanovits-Bányai

Publication year - 2004

Publication title -

international journal of horticultural science

Language(s) - English

Resource type - Journals

eISSN - 2676-931X

pISSN - 1585-0404

DOI - 10.31421/ijhs/10/3/503

Subject(s) - fire blight , erwinia , cultivar , peroxidase , point of delivery , enzyme assay , horticulture , blight , biology , enzyme , botany , bacteria , biochemistry , genetics

Two apple cultivars that display enhanced resistance to fire blight (causal agent: Erwinia amylovora) were selected. The aim of the present study was to characterize the peroxidase (POD) enzyme activity of `Szemes alma' (a historical cultivar) and MR-03, (a Hungarian multiresistant hybrid of 'Prima') and compare them to susceptible 'Jonathan M 40' and resistant 'Remo' controls. Peroxides enzyme activity during E. amylovora infections was investigated in artificially infected apple shoots. Increases in enzyme activities were observed in a `Jonathan M40' and in 'Remo', MR-03, `Szemes alma' cultivars. There was a consistent relationship between total enzyme activity and fire blight disease severity. High activity of the peroxidase was positively correlated with the degree of resistance to fire blight. A general hypothesis that POD activity is related to fire blight susceptibility/resistance is supported by our results.

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