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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
Summary
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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