Effectiveness of a Peptide-rich Fraction from Xenorhabdus budapestensis Culture against Fire Blight Disease on Apple Blossoms

Authors

  • Dávid VOZIK University of Pannonia, Research Institute on Bioengineering, Membrane Technology and Energetics, Egyetem u. 10, H-8200, Veszprém (HU)
  • Katalin BÉLAFI-BAKÓ University of Pannonia, Research Institute on Bioengineering, Membrane Technology and Energetics, Egyetem u. 10, H-8200, Veszprém (HU)
  • Mária HEVESI Corvinus University of Budapest, Department of Pomology, Ménesi út 29-43, H-1118, Budapest (HU)
  • Erzsébet BÖSZÖRMÉNYI Semmelweis University, Department of Epidemiology, Vas u. 17, H-1088, Budapest (HU)
  • András FODOR University of Wisconsin-Madison, Department of Bacteriology, 1550 Linden Drive, Madison, Room 4526, WI 53507 (US)

DOI:

https://doi.org/10.15835/nbha4329997

Keywords:

agrobiologicals, antagonists, antimicrobial compounds, entomopathogenic bacteria, infection, prevention

Abstract

Erwinia amylovora is one of the most frequently occurred plant pathogenic bacterium. It causes necrosis and blight symptoms on host plants and it lead to considerable yield losses throughout the world on apple trees. There is no effective chemical treatment is currently available against fire blight. The purpose of the present study was to search a new, alternative control method. The evaluation of the plant protection potential of an enriched fraction of Xenorhabdus budapestensis cell-free conditioned media was investigated. Purified samples were tested in vitro and in planta against the phytopathogenic bacterium. A reproducible method for isolation of a peptide-rich fraction from Xenorhabdus cell-free conditioned media was established. The process resulted in 400 mg of dry sample prepared from three litres of Xenorhabdus cell culture. Significant correlation was found between the concentration of the purified preparation and the induced inactivation zones against Erwinia amylovora Ea1 in agar diffusion test method. The minimum inhibitory concentration and minimum bactericidal concentration of the purified fraction against Ea1 strain were 8 ;g/mL and 16 ;g/mL, respectively. In planta experiments were tested on an apple cultivar (‘Watson Jonathan’) susceptible to fire blight. The effective range of concentration was 62-200 μg/mL, while treatment with 300 μg/mL and larger amounts caused necrotic symptoms on the petals of flowers. Current study pointed to the effectiveness of the compounds produced by X. budapestensis against fire blight. The development of a commercially applicable formulation of these compounds would allow growers to effectively control fire blight in apple and pear orchards.

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Published

2015-12-07

How to Cite

VOZIK, D., BÉLAFI-BAKÓ, K., HEVESI, M., BÖSZÖRMÉNYI, E., & FODOR, A. (2015). Effectiveness of a Peptide-rich Fraction from Xenorhabdus budapestensis Culture against Fire Blight Disease on Apple Blossoms. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 43(2), 547–553. https://doi.org/10.15835/nbha4329997

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Section

Research Articles
CITATION
DOI: 10.15835/nbha4329997