Modified phytopathogenic bacterial strains and their application for the screening of molecules useful for the protection of cultures.

摘要

The invention concerns strains of pseudomonas solanacearum, pseudomonas syringae, xanthomonas campestris or erwinia amyloyora, characterised in that they include at least one coding sequence of a reporter gene under the control of a hrp promoter gene, said sequence coding for a protein expressing a biological or enzymatic activity capable of being partially or totally repressed in the presence of molecules capable of interfering with the expression of the hrp gene, said strains not having, either naturally or after preliminary treatment, activity expressed by the coding sequence of the reporter gene.