Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

The nematicidal effects of the bacteria Pseudomonas oryzihabitans and Xenorhabdus nematophilus on the root-knot nematode Meloidogyne javanica

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Nematology
For more content, see Nematologica.

In two laboratory experiments and one pot experiment the influence of the bacterial symbionts Pseudomonas oryzihabitans from Steinernema abbasi and Xenorhabdus nematophilus from S. carpocapsae on the root-knot nematode Meloidogyne javanica was investigated. Exposure of egg masses of M. javanica to the bacteria and their metabolites resulted in reduced hatching of second stage juveniles (J2). J2 in contact with the bacteria and their metabolites exhibited disorientation and convulsive movements, but when they were washed and placed in fresh water, many regained normal movement. At dosages of 106 and 107 cells ml-1 mortality was 100% after 24 h exposure, Xenorhabdus being more toxic than Pseudomonas. In soil X. nematophilus was ineffective but P.oryzihabitans prevented invasion of J2 into tomato roots and there was evidence that the bacterium or its metabolites interfered with nematode development in galls. Overall, the results indicate that P.oryzihabitans may provide a possible control strategy for root-knot nematodes.

Action nématicide des bactéries Pseudomonas oryzihabitans et Xenorhabdus nematophilus sur le nématode Meloidogyne javanica - Les présentes recherches, au travers de deux expériences au laboratoire et d'une troisième en pots, ont concerné l'influence sur le nématode Meloidogyne javanica des symbiontes bactériens Pseudomonas oryzihinabitans, provenant de Steinernema abbasi, et Xenorhabdus nematophilus, de S. carpocapsae. L'exposition de masses d'œufs de M. javanica aux bactéries et à leurs métabolites a provoqué une diminution de l'éclosion des juvéniles de deuxième stade (J2). Les J2 en contact avec les bactéries et leurs métabolites se sont montrés désorientés et sujets à des mouvements convulsifs mais, après qu'ils aient été lavés et placés dans une eau pure, bon nombre d'entre eux ont recouvré des mouvements normaux. Aux doses de 106 et 107 cellules/ml-1 la mortalité était de 100% après une exposition de 24 h, Xenorhabdus s'étant révélé plus toxique que Pseudomonas . Dans le sol, Xenorhabdus s'est montré inefficace tandis que Pseudomonas empêchait la pénétration des J2 dans les racines de tomate; de plus, il semblerait évident que les bactéries ou leurs métabolites aient une influence sur le développement des nématodes dans les galles. Dans l'ensemble, les résultats indiquent que P.oryzihinabitans peut fournir une éventuelle stratégie de contrôle envers les Meloidogyne.

Affiliations: 1: Department of Entomology, 12 D. Mendeleev Str., Agricultural University, Plovdiv 4000, Bulgaria; 2: Department of Agriculture, The University of Reading, Earley Gate, P.O. Box 236, Reading, Berkshire, RG6 6AT,UK


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Nematology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation