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A nematicidal toxin fromPleurotus ostreatus NRRL 3526

O C Kwok1, R Plattner, D Weisleder

  • 1National Center for Agricultural Utilization Research, USDA-Agricultural Research Service-Midwest Area, 1815 North University Street, 61604, Peoria, Illinois.

Journal of Chemical Ecology
|November 21, 2013
PubMed

Insights

A novel nematicidal toxin was isolated from the oyster mushroom, Pleurotus ostreatus. This potent compound, trans-2-decenedioic acid, effectively immobilizes nematodes, offering a potential biological control agent.

Area of Science:

  • Mycology
  • Biochemistry
  • Nematology

Background:

  • Nematodes cause significant agricultural damage.
  • Biological control agents offer sustainable alternatives to chemical nematicides.
  • Pleurotus ostreatus is known for producing bioactive compounds.

Purpose of the Study:

  • To isolate and identify a nematicidal toxin from Pleurotus ostreatus.
  • To evaluate the efficacy of the purified toxin against nematodes.

Main Methods:

  • Cultivation of Pleurotus ostreatus on wheat straw.
  • Purification of the active nematicidal compound.
  • Nematode immobilization assays using Panagrellus redivivus.

Main Results:

  • A nematicidal toxin was successfully purified from Pleurotus ostreatus.
  • The toxin, identified as trans-2-decenedioic acid, immobilized 95% of Panagrellus redivivus at 300 ppm within 1 hour.
  • Immobilized nematodes showed no recovery after treatment.

Conclusions:

  • Trans-2-decenedioic acid is a potent nematicidal compound produced by Pleurotus ostreatus.
  • This toxin demonstrates potential as a biological control agent for nematode management.

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