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Integrated strategies for the management of stem canker of Oilseed rape in Europe

Contract nr: FAIR-CT96-1669
Project nr: 1669
Project type: SC
Starting date: 01/01/1997
Duration: 48 months
Total cost: 2,403,000 EUR
EC Contribution: 1,629,000 EUR
Scientific Officer: Arnaud BORCHARD
Research topic: Plant health
Acronym: IMASCORE

Background:
Environment-friendly integrated control of a plant disease necessitates:
1) a good knowledge of the pathogen, including its interactions with the host plant(s) and population structure;
2) an understanding of the epidemiology and of the weather factors leading to damaging epidemics, in order to establish risk forecasting assays;
3) a diverse range of sources of resistance, an assessment of their efficiency under the most diverse situations allowing to predict their behaviour when submitted to different climates and populations of the pathogen.

Objectives:
The objective of the proposed four-year project is to address these points, proposing integrated strategies to control the most damaging disease of oilseed rape and vegetable Brassicas in Europe: the stem canker (also termed Phoma and black-leg disease of crucifers), caused by the fungal pathogen Leptosphaeria maculans (anamorph: Phoma lingam). This work will assess the efficiency of resistance currently available in oilseed rape under various situations, identify novel sources of resistance, and propose disease resistance strategies fitting specific European situations, i.e. France, Germany, the UK, Poland and Portugal.

Description:
A large number of L. Maculans isolates will be collected from diverse locations and crops in Europe. The collection will be analysed according to biological, biochemical and molecular criteria and compared to worldwide reference isolates. Simultaneously, a four-year epidemiological survey will be performed in parallel in the UK, France and Poland, both in field and controlled conditions. Any main races and/or species identified in the European survey will be used for epidemiological studies and for the screening for resistance in a collection of more than 700 accessions of B. oleracea, B. rapa and B. napus, including rare germplasm. The genetic analysis of the interactions will be performed on both the host and the pathogen, in order to understand the genetic control of the resistance and to standardise race nomenclature. PCR-based assays will be developed to design specific diagnosis tools that will allow recognition of all species, and probably races, involved in the stem canker disease and that will be used for further epidemiological studies. Finally, the efficiency of resistance sources will be assessed under field conditions. Novel and promising resistance sources will be included immediately in breeding programmes. The production of commercial varieties from new resistance sources will be enhanced using molecular markers of resistance genes for marker-assisted breeding, in conjunction with obtaining di-haploids and the use of rapid-cycling Brassicas. Such a programme can only be carried out through collaborative work using a common collection of isolates, numerous and rare accessions of Brassica, diverse field conditions, and using expertise in agrometeorology and epidemiology, biochemistry and molecular biology, and fungal and plant genetics. The proposed project groups together two teams involved in plant breeding, including a private company which will be in charge of further commercialisation of the results of this work, two teams specialised in epidemiological studies, and three teams specialising in the microbiology of L. maculans (characterisation, fungal genetics, interaction appraisal and molecular biology). This project specifically relates to task 4.4.1 (plant health). The expected results are:
1) risk forecasting methods using both the data regarding the structure of European populations and the epidemiology of the pathogen(s);
2) improved methods for identification and detection of the pathogens in seed lots or in planta;
3) characterisation of efficient resistance genes for an environment-friendly control of blackleg.
Integrating these goals, this program aims at suggesting long-term strategies for management of resistance.


Coordinator
Marie-Helene BALESDENT
I.N.R.A.
Route de Saint-Cyr
F-78026 Versailles Cedex
Tel.: +33 1 30 83 32 29
Fax: +33 1 30 83 31 95
E-mail: mhb@versailles.inra.fr


Partners

  • Annette PENAUD
    CETIOM - Centre Technique Interprofessionnel des Oleagineux metropolitains
    Av. Victor Hugo 174
    F-75116 Paris
    Tel.: +33 1 44 34 72 00
    Fax: +33 1 47 55 94 09
    E-mail: penaud@cetiom.fr

  • Malgorzata JEDRYCZKA
    Institute of Plant Genetics
    Polish Academy of Sciences
    Strzeszynska 34
    PL-60-479 Poznan
    Tel.: +48 61 23 35 11
    Fax: +48 61 23 36 71
    E-mail: mjed@igr.poznan.pl

  • Joao DIAS
    Universidade Tecnica de Lisboa
    Instituto Superior de Agronomia
    Tapada da Ajuda
    P-1399 Lisboa
    Tel.: +351 21 360 20 50
    Fax: +351 21 363 50 31
    E-mail: jsdias@isa.utl.pt

  • Bruce David Ledger FITT
    I.A.C.R.
    Harpenden
    UK-AL5 2JQ Hertfordshire
    Tel.: +44 1582 76 31 33
    Fax: +44 1582 76 09 81
    E-mail: bruce.fitt@bbsrc.ac.uk

  • Heiner BUSCH
    Deutsche Saatveredelung gmbh.
    Thüler Straße, 30
    D-33154 Salzkotten-Thule
    Tel.: +49 525 81 89 71
    Fax: +49 525 81 82 38
    E-mail: DSV.Thuele@t-online.de

  • Stanislas VEILLET
    Semences Cargill/Monsanto SAS
    B.P. 17
    F-28321 Toury
    Tel.: +33 2 37 90 10 17
    Fax: +33 2 37 90 69 09
    E-mail: STANISLAS.VEILLET@monsanto.com

  • Hans-Heinrich HOPPE
    Georg-August-Universität Göttingen
    Grisebachstraße, 6
    D-37077 Göttingen
    Tel.: +49 551 39 37 01
    Fax: +49 551 39 41 87


 
 
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