Bacteria having nematicidal activity and their agricultural use

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 1/20 (2006.01) A01N 63/00 (2006.01)

Patent

CA 2218299

New bacterial strains of the species B. firmus and B. cereus have been found, which possess a nematicidal activity. The bacteria and their active mutants are used for controlling nematode infestation of various plants. The strains have been deposited and given the accession numbers CNCM I-1582 and CNCM I- 1562, respectively. Furthermore, a composition containing the strains or spores therefrom, as an active ingredient and carrier is disclosed. In addition a method for controlling plant-pathogenic nematodes, such as those nematodes capable of producing root-knot disease are also disclosed.

Nouvelles souches de bactéries de l'espèce B. Firmus, ayant une action nématicide. Les bactéries et leurs mutants actifs sont utilisées pour juguler l'attaque de différentes plantes par les nématodes. Ces souches ont été déposées et ont reçu les numéros d'enregistrement CNCM 1-1556 et CNCM 1-1562, respectivement. Est également décrite une composition contenant les souches ou les spores issues de ces souches, comme ingrédient actif et véhicule. L'invention concerne par ailleurs un procédé d'élimination des nématodes phytopathogènes, notamment ceux qui peuvent produire les galles.

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