Journal of Phytopathology (2010) 158, 132-136

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Hideki Takahashi, Shu Hase, Yoshinori Kanayama and Shigehito Takenaka (2010)
Identification of a protein that interacts with LeATL6 ubiquitin-protein ligase E3 upregulated in tomato treated with elicitin-like cell wall proteins of Pythium oligandrum
Journal of Phytopathology 158 (2), 132-136
Abstract: The expression of LeATL6, which encodes RING-H2 zinc finger ubiquitin-protein ligase E3, is highly induced in tomato roots treated with the elicitin-like cell wall protein fraction (CWP) from the non-pathogenic oomycete Pythium oligandrum, which enhances resistance to pathogens through a jasmonic acid (JA)-dependent signalling pathway. In this study, the role of LeATL6 for CWP-induced defence response was further analysed. To screen the putative target protein of LeATL6 for the CWP-induced defence mechanism in tomato, we used a yeast two-hybrid system to screen five clones encoding a protein that interacts with LeATL6. Four clones had a function associated with the ubiquitin-proteasome system. Another positive clone encoded a protein sharing homology with S-adenosylmethionine decarboxylase (SAMDC). In CWP-treated tomato roots, SAMDC activity was clearly suppressed. Thus, the interaction of SAMDC with LeATL6 and the decreased SAMDC activity may be associated with JA-dependent induced resistance in tomato treated with P. oligandrum.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Hideki Takahashi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
resistance/tolerance/defence of host
Research topic(s) for beneficials or antagonists:
molecular biology - genes

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Pythium oligandrum (antagonist)