In vitro antagonistic activity of fungi isolated from sclerotia on potato tubers against Rhizoctonia solani

Authors : Erkol DEMİRCİ, Elif DANE, Cafer EKEN

Pages : 457-462

View : 19 | Download : 9

Publication Date : 2011-12-01

Article Type : Research Paper

Abstract :Forty-five fungal isolates were obtained from sclerotia of Rhizoctonia solani on potato tubers in Erzurum, Turkey. The interaction between fungal isolates and R. solani was studied in dual culture technique. Some fungal isolates affected R. solani by antibiosis and/or parasitism. Results of the antagonism tests showed that Acremonium sp., Gliocladium viride, Paecilomyces marquandii, Paecilomyces sulphurellus, Penicillium camemberti, Penicillium expansum, Penicillium frequentans insert ignore into journalissuearticles values(ME-50);, Penicillium nigricans, Penicillium olsonii, Penicillium phialosporum, Sporothrix sp. insert ignore into journalissuearticles values(MCY-4);, Sporothrix schenckii, and Verticillium dahliae isolates produced an inhibition zone in front of the R. solani colony to a varying degree. Trichoderma harzianum isolates were able to overgrow the mycelium of R. solani. Physical colony contact was observed between the remaining 21 fungal isolates and R. solani. Furthermore, coiling of hyphae of Acremonium sp., Acremonium strictum, Gliocladium catenulatum, G. viride, and T. harzianum around those of R. solani was commonly observed.
Keywords : Key words Biocontrol, potato, antibiosis, parasitism, Rhizoctonia solani