Up-regulation of pathogenesis-related proteins in the apoplast of Malus domestica after application of a non-pathogenic bacterium

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Kürkcüoglu, S.; Piotrowski, M.; Gau, A.E.: Up-regulation of pathogenesis-related proteins in the apoplast of Malus domestica after application of a non-pathogenic bacterium. In: Zeitschrift für Naturforschung - Section C Journal of Biosciences 59 (2004), Nr. 11-12, S. 843-848. DOI: https://doi.org/10.1515/znc-2004-11-1213

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Abstract: 
The intercellular washing fluid (IWF) of Malus domestica cv. Holsteiner Cox before and after application of the non-pathogenic bacterium Pseudomonas fluorescens Bk3 to the leaves was investigated in a comparative manner. SDS-PAGE in combination with ESI Q-ToF mass spectrometry, and homology search in relevant data bases revealed the highly up-regulated expression of several pathogenesis-related plant proteins in the apoplast of the leaves treated with P. fluorescens. These proteins were β-1,3-glucanase, chitinase, thaumatin-like protein, ribonuclease-like protein, and a hevein-like protein. Moreover, a 9 kDa non-specific lipid transfer protein was significantly reduced after the application of P. fluorescens. The possible relevance of a pre-treatment of apple cultivars with the non-pathogenic bacterium P. fluorescens Bk3, as an alternative method to the treatment with fungicides, for increasing the resistance of susceptible apple cultivars against an infection with the fungus Venturia inaequalis is discussed.
License of this version: CC BY-NC-ND 3.0
Document Type: article
Publishing status: publishedVersion
Issue Date: 2004
Appears in Collections:Naturwissenschaftliche Fakultät

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1 image of flag of Germany Germany 36 85.71%
2 image of flag of United States United States 2 4.76%
3 image of flag of China China 2 4.76%
4 image of flag of Taiwan Taiwan 1 2.38%
5 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 1 2.38%

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