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Hamza M. A., Tazi H., Fossati Odile, Moukhli A., Hicham L., Ferji Z., Roussos Sevastianos, El Mousadik A., Boubaker H., Mateille Thierry. (2020). May passive dispersal of fungal enemies with native substrates in olive nurseries help to control phytonematodes ?. Biotechnologie Agronomie Société et Environnement, 24 (1), p. 37-45. ISSN 1370-6233.

Titre du document
May passive dispersal of fungal enemies with native substrates in olive nurseries help to control phytonematodes ?
Année de publication
2020
Type de document
Article référencé dans le Web of Science WOS:000518156200004
Auteurs
Hamza M. A., Tazi H., Fossati Odile, Moukhli A., Hicham L., Ferji Z., Roussos Sevastianos, El Mousadik A., Boubaker H., Mateille Thierry
Source
Biotechnologie Agronomie Société et Environnement, 2020, 24 (1), p. 37-45 ISSN 1370-6233
Description of the subject. In Morocco, expanding agricultural sector under "Morocco Green Plan" will also introduce plant diseases and plant parasitic nematodes (PPN). Soil substrate used in most of the olive nurseries is potentially inhabited by PPN and natural enemies. Objectives. This work assessed the co-occurrence of PPN and nematophagous fungi (NF) in substrates and potential of NF to suppress PPN. Method. The diversity of PPN and NF genera was characterized in 305 substrate samples, isolated from 25 olive nurseries and functional activity (nematicidal and enzymatic) of NF was evaluated. Results. High PPN diversity was detected in the isolated samples and substrates were differentiated by NF activity. Global partition between PPN and NF diversity patterns confirmed prey-predator antagonism. Moreover, PPN-NF patterns depend on the fungal survival (saprophytes vs obligate parasites) and antagonism (predation vs toxicity) processes. However, even the NF strains with maximum fitness (growth, sporulation, enzymatic activity) were not inevitably the most effective against PPN. Consequently, it was hypothesized that predation and competition could be an adaptation process of NF to overcome environmental stress and exploit alternative or supplementary nutrient sources. Conclusions. The use of diverse native NF from cultivated and wild soils offer future prospects for the development of PPN management strategies in olive nurseries.
Plan de classement
Biologie du sol [074] ; Sciences du monde végétal [076] ; Biotechnologies [084]
Description Géographique
MAROC
Localisation
Fonds IRD [F B010077997]
Identifiant IRD
fdi:010077997
Contact