Occurrence and molecular diversity of the Fit insect toxin locus in plant-beneficial pseudomonads

Détails

ID Serval
serval:BIB_8ABE4E7E6208
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Occurrence and molecular diversity of the Fit insect toxin locus in plant-beneficial pseudomonads
Périodique
IOBC/WPRS Bulletin
Auteur(s)
Ruffner B., Péchy-Tarr M., Keel C., Maurhofer M.
ISSN
978-92-9067-219-7
ISSN-L
1027-3115
Statut éditorial
Publié
Date de publication
2009
Volume
45
Pages
251-254
Langue
anglais
Résumé
The application of plant-beneficial pseudomonads provides a promising alternative to chemical pest management in agriculture. The fact that Pseudomonas fluorescens CHA0 and Pf-5, both well-known biocontrol agents of fungal root diseases, exhibit also potent insecticidal activity is of particular interest, as these plant-beneficial bacteria naturally colonize the rhizosphere of important crop plants. Insecticidal activity in these strains depends on a novel locus encoding the production of a protein toxin termed Fit (for P. fluorescens insecticidal toxin). To gain a better understanding of the ecological relevance of the Pseudomonas anti-insect activity, we have begun to investigate the occurrence and molecular diversity of the Fit toxin genes among root-associated pseudomonads. To this end, we have screened a large world-wide collection of fluorescent Pseudomonas sp. isolated from the roots of different plant species using molecular fingerprinting techniques. The strains are already well characterized for exoproduct patterns and disease-suppressive ability and are currently being tested for insecticidal activity in a greater wax moth larvae assay system.
Création de la notice
04/03/2009 16:51
Dernière modification de la notice
03/03/2018 19:10
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