OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Characterization of the Interaction Between the Bacterial Wilt Pathogen Ralstonia solanacearum and the Model Legume Plant Medicago truncatula

Vailleau, Fabienne and Sartorel, Elodie and Jardinaud, Marie-Françoise and Chardon, Fabien and Genin, Stéphane and Huguet, Thierry and Gentzbittel, Laurent and Petitprez, Michel Characterization of the Interaction Between the Bacterial Wilt Pathogen Ralstonia solanacearum and the Model Legume Plant Medicago truncatula. (2007) Molecular Plant Microbe Interactions, vol. 2 (n° 2). pp. 159-167. ISSN 0894-0282

[img] (Document in English)

PDF - Depositor and staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
393kB

Official URL: http://dx.doi.org/10.1094/MPMI-20-2-0159

Abstract

The soilborne pathogen Ralstonia solanacearum is the causal agent of bacterial wilt and attacks more than 200 plant species, including some legumes and the model legume plant Medicago truncatula. We have demonstrated that M. truncatula accessions Jemalong A17 and F83005.5 are sus- ceptible to R. solanacearum and, by screening 28 R. solana- cearum strains on the two M. truncatula lines, differential interactions were identified. R. solanacearum GMI1000 infected Jemalong A17 line, and disease symptoms were dependent upon functional hrp genes. An in vitro root in- oculation method was employed to demonstrate that R. solanacearum colonized M. truncatula via the xylem and intercellular spaces. R. solanacearum multiplication was restricted by a factor greater than 1 × 105 in the resistant line F83005.5 compared with susceptible Jemalong A17. Genetic analysis of recombinant inbred lines from a cross between Jemalong A17 and F83005.5 revealed the presence of major quantitative trait loci for bacterial wilt resistance located on chromosome 5. The results indicate that the root pathosystem for M. truncatula will provide useful traits for molecular analyses of disease and resistance in this model plant species.

Item Type:Article
Additional Information:The original publication is available on http://apsjournals.apsnet.org/loi/mpmi
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Institut National de la Recherche Agronomique - INRA
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Statistics:download
Deposited By: Laurent GENTZBITTEL

Repository Staff Only: item control page