Bacterial chemoattraction towards jasmonate plays a role in the entry of Dickeya dadantii through wounded tissues
| Autor: | Maria, Antunez-Lamas, Ezequiel, Cabrera, Emilia, Lopez-Solanilla, Roberto, Solano, Pablo, González-Melendi, Jose Manuel, Chico, Ian, Toth, Paul, Birch, Leighton, Pritchard, Leighton, Prichard, Hui, Liu, Pablo, Rodriguez-Palenzuela |
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| Rok vydání: | 2009 |
| Předmět: |
Iron-Sulfur Proteins
Virulence Virulence Factors Chemotaxis Arabidopsis Cyclopentanes Gene Expression Regulation Bacterial Plants Chicory Plant Leaves Repressor Proteins Carbon-Sulfur Lyases Magnoliopsida RNA Bacterial Bacterial Proteins Enterobacteriaceae Genes Bacterial Mutation Gene Regulatory Networks Oxylipins Genome Bacterial Plant Diseases Signal Transduction |
| Zdroj: | Molecular microbiology. 74(3) |
| ISSN: | 1365-2958 |
| Popis: | Jasmonate is a key signalling compound in plant defence that is synthesized in wounded tissues. In this work, we have found that this molecule is also a strong chemoattractant for the phythopathogenic bacteria Dickeya dadantii (ex-Erwinia chysanthemi). Jasmonic acid induced the expression of a subset of bacterial genes possibly involved in virulence/survival in the plant apoplast and bacterial cells pre-treated with jasmonate showed increased virulence in chicory and Saintpaulia leaves. We also showed that tissue wounding induced bacterial spread through the leaf surface. Moreover, the jasmonate-deficient aos1 Arabidopsis thaliana mutant was more resistant to bacterial invasion by D. dadantii than wild-type plants. These results are consistent with the hypothesis that sensing jasmonic acid by this bacterium helps the pathogen to ingress inside plant tissues. |
| Databáze: | OpenAIRE |
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