Biofilm formation is determinant in tomato rhizosphere colonization by Bacillus velezensis FZB42 - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

Biofilm formation is determinant in tomato rhizosphere colonization by Bacillus velezensis FZB42

Jovana Deravel
  • Fonction : Auteur
François Krier
  • Fonction : Auteur
  • PersonId : 779659
  • IdRef : 181071924
Max Béchet
  • Fonction : Auteur
  • PersonId : 1338688
  • IdRef : 117628980
Marc Ongena
Philippe Jacques
  • Fonction : Auteur
  • PersonId : 769358
  • IdRef : 079561535

Résumé

In this work, the behavior in tomato rhizosphere of Bacillus velezensis FZB42 was analyzed taking into account the surfactin production, the use of tomato roots exudate as substrates, and the biofilm formation. B. velezensis FZB42 and B. amyloliquefaciens S499 have a similar capability to colonize tomato rhizosphere. Little difference in this colonization was observed with surfactin non producing B. velezensis FZB42 mutant strains. B. velezensis is able to grow in the presence of root exudate and used preferentially sucrose, maltose, glutamic, and malic acids as carbon sources. A mutant enable to produce exopolysaccharide (EPS-) was constructed to demonstrate the main importance of biofilm formation on rhizosphere colonization. This mutant had completely lost its ability to form biofilm whatever the substrate present in the culture medium and was unable to efficiently colonize tomato rhizosphere.
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Dates et versions

hal-02737716 , version 1 (02-06-2020)

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Citer

Ameen Al-Ali, Jovana Deravel, François Krier, Max Béchet, Marc Ongena, et al.. Biofilm formation is determinant in tomato rhizosphere colonization by Bacillus velezensis FZB42. 3rd Biennial International Congress on Natural Products and Biocontrol, Sep 2016, Perpignan, France. pp.11, ⟨10.1007/s11356-017-0469-1⟩. ⟨hal-02737716⟩

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