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Beneficial effects of Enterobacter cloacae and Pseudomonas mendocina for biocontrol of Meloidogyne incognita with the endospore-forming bacterium Pasteuria penetrans

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Two rhizosphere bacteria, Enterobacter cloacae and Pseudomonas mendocina, were isolated from the rhizosphere of tomato plants growing in a soil heavily infested with both root-knot nematodes and the parasitoid endospore-forming bacterium Pasteuria penetrans. Bacteria E. cloacae and P. mendocina stimulated plant growth, inhibited the reproduction of the root knot nematode Meloidogyne incognita, and increased the attachment of the endospores of P. penetrans on the nematodes in vitro. E. cloacae significantly increased the reproduction of P. penetrans in plant roots. Consequently, the introduction of such bacteria in soils, or cultural practices aimed to increase the activity of native strains of these bacteria, could greatly contribute to the efficiency of nematode biocontrol with P. penetrans.

Stimulation de l'activite antagoniste de Pasteuria penetrans envers Meloidogyne incognita par Enterobacter cloacae et Pseudomonas mendocina - Deux bacteries rhizospheriques, Enterobacter cloacae et Pseudomonas mendocina, ont ete isolees a partir de la rhizosphere de plants de tomate preleves dans un sol tres infeste par des nematodes a galles et l'actinomycete Pasteuria penetrans. Les deux souches bacteriennes ont stimule la croissance de la plante, inhibe le developpement du nematode Meloidogyne incognita et augmente in vitro l'attachement des spores de P. penetrans sur la cuticule des nematodes. E. cloacae a significativement stimule la multiplication de P. penetrans dans les racines. En consequence, l'utilisation de telles bacteries pourrait ameliorer de maniere importante l'efficacite de P. penetrans contre les nematodes du genre Meloidogyne.

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/content/journals/10.1163/156854199507901
1999-02-01
2016-12-04

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