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A tentative explanation of the distribution, on Reunion island, of bacterial wilt caused by either Biovar 2 or Biovar 3 of Ralstonia solanacearum

Nicole J.F., Cheron Jean-Jacques, Girard Jean-Claude, Luisetti Jacques. 1998. A tentative explanation of the distribution, on Reunion island, of bacterial wilt caused by either Biovar 2 or Biovar 3 of Ralstonia solanacearum. In : Bacterial wilt Disease : molecular and ecological aspects = [Flétrissement bactérien : aspects moléculaires et écologiques]. Prior P. (ed.), Allen C. (ed.), Elphinstone J. (ed.). Berlin : Springer, pp. 343-350. International bacterial wilt symposium. 2, Gosier, Guadeloupe, 22 June 1997/27 June 1997.

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Autre titre : Tentative d'explication de la distribution, sur l'île de la Réunion, du flétrissement bactérien causé par Biovar 2 ou Biovar 2 de Ralstonia solanacearum

Abstract : In the Reunion Island, the distribution of race 1 and race 3 strains of #Ralstonia solanacearum# as determined by the wilting of susceptible plants, is clearly connected with the altitude of cropped areas, so that the temperature could be considered as the main discriminant factor. Experiments were performed in a controlled environnient chamber in order to test the hypothesis of a discriminant effect of the temperature on the multiplication in tomato seedlings of two representative strains and on the issued wilting rate. Results indicate that temperature could be responsible for the lack of biovar 3 strains in cool areas but not for the very low frequency of bacterial wilt caused by biovar 2 strains recorded in warm areas. Co-inoculations of both strains point out a rather weak competitiveness of the biovar 2 strain that could be the starting point of a more complicated explanation. (Résumé d'auteur)

Mots-clés Agrovoc : Solanum lycopersicum, Bacteria, Flétrissement, Distribution géographique, Facteur du milieu, Température, Ralstonia solanacearum

Mots-clés géographiques Agrovoc : Réunion

Classification Agris : H20 - Plant diseases

Auteurs et affiliations

  • Nicole J.F.
  • Cheron Jean-Jacques, CIRAD-FLHOR-PRH (REU)
  • Girard Jean-Claude, CIRAD-CA-Canne à sucre (REU)
  • Luisetti Jacques

Source : Cirad - Agritrop (https://agritrop.cirad.fr/391302/)

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