Effect of Erwinia amylovora infection in biochemical changes of different pear fruits

K. Honty, M. Hevesi, M. Tóth, É Sárdi, E. Stefanovits-Banyai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this recent study we have investigated the consequences of E. amylovora infection of pear fruits. Inoculations were made with a mixture of pear isolates (Ea 21, 23; at a density of 5 × 108 cells/ml) collected from various growing regions of Hungary. The change of concentration in time of different carbohydrate fractions (mainly glucose, fructose and sucrose) in unripe pear fruits of different cultivars in connection with disease development was measured using the OPLC method. Peroxidase enzyme activity was also measured in the samples during the disease process. Samples (unripe fruit flesh cutouts - 1 cm 0) were taken from the inoculation point and neighboring tissues during seven day intervals. Host responses showed significant differences. We have concluded that among the three well-detectable carbohydrate fractions, glucose and sucrose were the best markers of the disease process. The concentration of glucose was higher in the susceptible uninfected control ('Max Red Bartlett') tissues than in the resistant ones ('Vicar of Winkfield') and it decreased after the infection in a different way. Increase in peroxidase enzyme activity started to occur on the first day after inoculation (DAI) in the susceptible cultivar, while the change was detectable only 2 DAI in resistant fruits. It was a suitable marker of the susceptible and resistant host responses.

Original languageEnglish
Title of host publicationActa Horticulturae
Pages879-884
Number of pages6
Volume800 PART 2
Publication statusPublished - 2008
Event10th International Pear Symposium - Peniche, Portugal
Duration: May 22 2007May 26 2007

Publication series

NameActa Horticulturae
Volume800 PART 2
ISSN (Print)05677572

Other

Other10th International Pear Symposium
CountryPortugal
CityPeniche
Period5/22/075/26/07

Fingerprint

Erwinia amylovora
pears
fruits
infection
glucose
peroxidase
sucrose
enzyme activity
carbohydrates
cultivars
Hungary
fructose
sampling
cells
tissues
methodology

Keywords

  • Bacterial infection
  • Erwinia amylovora
  • Glucose
  • Peroxidase
  • Resistant
  • Sucrose
  • Susceptible pear fruit

ASJC Scopus subject areas

  • Horticulture

Cite this

Honty, K., Hevesi, M., Tóth, M., Sárdi, É., & Stefanovits-Banyai, E. (2008). Effect of Erwinia amylovora infection in biochemical changes of different pear fruits. In Acta Horticulturae (Vol. 800 PART 2, pp. 879-884). (Acta Horticulturae; Vol. 800 PART 2).

Effect of Erwinia amylovora infection in biochemical changes of different pear fruits. / Honty, K.; Hevesi, M.; Tóth, M.; Sárdi, É; Stefanovits-Banyai, E.

Acta Horticulturae. Vol. 800 PART 2 2008. p. 879-884 (Acta Horticulturae; Vol. 800 PART 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Honty, K, Hevesi, M, Tóth, M, Sárdi, É & Stefanovits-Banyai, E 2008, Effect of Erwinia amylovora infection in biochemical changes of different pear fruits. in Acta Horticulturae. vol. 800 PART 2, Acta Horticulturae, vol. 800 PART 2, pp. 879-884, 10th International Pear Symposium, Peniche, Portugal, 5/22/07.
Honty K, Hevesi M, Tóth M, Sárdi É, Stefanovits-Banyai E. Effect of Erwinia amylovora infection in biochemical changes of different pear fruits. In Acta Horticulturae. Vol. 800 PART 2. 2008. p. 879-884. (Acta Horticulturae).
Honty, K. ; Hevesi, M. ; Tóth, M. ; Sárdi, É ; Stefanovits-Banyai, E. / Effect of Erwinia amylovora infection in biochemical changes of different pear fruits. Acta Horticulturae. Vol. 800 PART 2 2008. pp. 879-884 (Acta Horticulturae).
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