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CYTOKININ PRODUCTION BY ECTOMYCORRHIZAL FUNGI

1982; Wiley; Volume: 91; Issue: 1 Linguagem: Inglês

10.1111/j.1469-8137.1982.tb03292.x

1469-8137

Prokof'eva Ng, Anthony L. J. Cole, Paula E. Jameson, James A. McWha,

Plant Pathogens and Fungal Diseases

SUMMARY The mycorrhizal fungi Rhizopogon luteolus Fr. and Nordh, Boletus elegans Schum. ex. Fr. and Suillus tuteus L. ex Fr., were investigated for cytokinin production in vitro. Culture filtrates in which the fungi had been growing for at least 2 weeks showed cytokinin activity when purified and bioassayed using soybean callus tissues. The cytokinin activity in the culture filtrate increased with longer periods of incubation. A potent inhibitor of callus growth from Boletus elegans culture filtrate which masks cytokinin activity is discussed.