Journal of Nematology (2007) 39, p. 98 (Riga et al.)

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E. Riga, L. Lacey and N. Guerra (2007)
The potential of the fungus Muscodor albus as a bio-control agent against economically important plant-parasitic nematodes of potatoes in Washington State
Journal of Nematology 39 (1), 98-98
Abstract - Society of Nematologists 46th Annual Meeting San Diego, California July 28-August 1, 2007
Abstract: The following plant-parasitic root-knot nematodes, Meloidogyne chitwoodi and M. hapla, the stubby root nematode, Paratrichodorus allius, and the lesion nematode, Pratylenchus penetrans, are of great economic importance to the potato industry in the Pacific Northwest and specifically to Washington State. It is challenging to develop economically sustainable management strategies that will control all of the above species. The fungus Muscodor albus, which produces a mixture of antimicrobial volatile organic chemicals, was tested for its nematicidal and nematostasic activity against the plant-parasitic nematodes under laboratory (chamber) and greenhouse conditions. Juveniles were exposed to volatiles generated by M. albus rye grain culture for 72 hours in hermetically sealed 28.3 liter chambers at 24°C. The mean percent mortalities of nematode juveniles exposed to M. albus were 70% for M. chitwoodi, 83% for P. allius and 86% for P. penetrans in comparison to 3%, 11% and 7% of the untreated controls, respectively. Only 7% of M. hapla were killed by M. albus; however, the surviving juveniles displayed reduced movement and response to physical stimuli in comparison to the control, which is evidence of nematostasis. The greenhouse/nematode host pot study showed that M. albus applied at 0.5% and 1.0% w/w reduced all plant-parasitic nematodes species including M. hapla by 80-100% in comparison to the untreated controls.
Database assignments for author(s): Ekaterini Riga, Lawrence A. Lacey

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Meloidogyne chitwoodi Potato (Solanum tuberosum) U.S.A. (NW)
Meloidogyne hapla Potato (Solanum tuberosum) U.S.A. (NW)
Pratylenchus penetrans Potato (Solanum tuberosum) U.S.A. (NW)
Paratrichodorus allius Potato (Solanum tuberosum) U.S.A. (NW)
Muscodor albus (antagonist) Meloidogyne chitwoodi
Muscodor albus (antagonist) Pratylenchus penetrans
Muscodor albus (antagonist) Paratrichodorus allius