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Communication dans un congrès

HrpL negatively regulates flagellar system in Erwinia amylovora

Abstract : Several previous works seem to indicate that flagellar and hrp genes of Erwinia amylovora are counter-regulated. In the present paper, this hypothesis is confirmed by the analysis of several parameters linked to flagella synthesis in E. amylovora grown in hrp- or non hrp-inducing conditions. Moreover, amongst the various hrp mutants tested, the hrpL regulatory mutant only was more motile, produced more flagellins and showed more flagella than the wild-type strain when cultivated on a hrp-inducing medium. A plasmid carrying hrpL introduced into a hrpL mutant decreased its motility and flagellin production. These results strongly suggest that flagellar synthesis of E. amylovora is under the negative control of HrpL, a positive regulator of hrp genes.
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Communication dans un congrès
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https://hal.inrae.fr/hal-02756636
Déposant : Migration Prodinra <>
Soumis le : mercredi 3 juin 2020 - 23:11:33
Dernière modification le : vendredi 12 juin 2020 - 10:43:26

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  • HAL Id : hal-02756636, version 1
  • PRODINRA : 16334

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Sophie Cesbron, Marie-Noelle Brisset, Michel Tharaud, J Pierre Paulin. HrpL negatively regulates flagellar system in Erwinia amylovora. 10. International Workshop on Fire Blight, Jul 2004, Bologna, Italy. ⟨hal-02756636⟩

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