Mateille Thierry auteur aut IRD Fould S. auteur aut IRD Dabire K. R. auteur aut IRD Diop M. T. auteur aut IRD Ndiaye S. auteur aut IRD text journalArticle eng text/pdf born digital access Root-knot nematodes belonging to the Meloidogyne genus are ubiquitous plant-parasitic pests, especially on vegetables. The Pasteuria penetrans bacterium is an obligate parasite of nematodes, parasitizing most of the Meloidogyne species. Spatial distributions of Meloidogyne javanica populations infested or not by R penetrans and of bacterial populations were studied in a vegetable plot naturally infested by these organisms. It was observed that distributions of M. javanica populations, of populations infested by P. penetrans, and of free bacteria Populations were not overlapped. Soil factors involved were investigated. Soil texture and water flow in porosity are concerned, as they directly influence the level of the pool of bacteria and then the chances of both organisms to meet. The soil solution has a direct effect on the attachment of the bacterium on the nematode cuticle. specialized Biocontrol Meloidogyne javanica Plant-parasitic nematodes Pasteuria penetrans Porosity Soil solution Texture 074 076 41 2 303-308 2009 0038-0717 https://www.documentation.ird.fr/hor/fdi:010044311 10.1016/j.soilbio.2008.11.006 0038-0717 [F B010044311] https://www.documentation.ird.fr/hor/fdi:010044311 https://www.documentation.ird.fr/intranet/publi/2009/03/010044311.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2009-04-08 2017-08-23 fdi:010044311 fre