Mateille Thierry, Fould S., Dabire K. R., Diop M. T., Ndiaye S. (2009). Spatial distribution of the nematode biocontrol agent Pasteuria penetrans as influenced by its soil habitat. Soil Biology and Biochemistry, 41 (2), p. 303-308. ISSN 0038-0717.
Titre du document
Spatial distribution of the nematode biocontrol agent Pasteuria penetrans as influenced by its soil habitat
Mateille Thierry, Fould S., Dabire K. R., Diop M. T., Ndiaye S.
Source
Soil Biology and Biochemistry, 2009,
41 (2), p. 303-308 ISSN 0038-0717
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.
Plan de classement
Biologie du sol [074]
;
Sciences du monde végétal [076]
