ORIGINAL ARTICLE
Potential of oyster mushrooms for the biocontrol of sugar beet nematode (Heterodera schachtii)
 
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Department of Plant Pathology, College of Agriculture, Tarbiat Modares University, P.O. Box: 14115-336, Tehran, Iran
CORRESPONDING AUTHOR
Parisa Palizi
Department of Plant Pathology, College of Agriculture, Tarbiat Modares University, P.O. Box: 14115-336, Tehran, Iran
 
Journal of Plant Protection Research 2009;49(1):27–33
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ABSTRACT
The potential of oyster mushrooms to attack and kill sugar beet cyst nematode (Heterodera schachtii) was studied. The ability of Pleurotus ostreatus, P. sajor-caju, P. florida, P. flabellatus, P. ostreatus (sporeless) , P. eryngi and Hypsizygus ulmarius to prey on the cyst nematode was confirmed. Nematodes were inoculated on water agar plates on which a single sparse fungal colony of one of the above mentioned fungi was grown. Nematodes were quickly immobilized after inoculation the plates with each Pleurotus species, with mortality of about 96%, 72%, 55%, 52%, 20%, 23% and 62%, respectively. Nematicidal activities of culture filtrates of Pleurotusspecies and H. ulmarius against H. schachtii were also studied in vitro. Extracts of P. ostreatus could paralyse 90% of nematodes whereas P. eryngii could paralyse only 50% of nematodes. The efficacy of old mushroom compost from cultures of P. ostreatus and P. sajor-cajuin controlling cysts on sugar beet (Beta vulgaris ICI) were studied under greenhouse conditions. The results showed that 100 and 200 grams of mushroom compost per 3 kilogram/pot could significantly control cysts, reducing more than 85% cysts in soil. Presence of cysts on the roots and larvae inside roots were compared with the control treatment.
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
 
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