Inhibition of chlamydospore production in Fusarium oxysporum by ammonia and high ion concentrations

Inhibition of chlamydospore production in Fusarium oxysporum by ammonia and high ion concentrations

1985

REP.G1459

NH4Cl in a Tris-HCl buffered sol. inhibited chlamydospore production in germinated macroconidia of F. oxysporum. KCl, CaCl2 and buffer at higher concn were also inhibitory but to a lesser extent. At fixed concn of NH4Cl and KCl mixed at different ratios, chlamydospore production decreased with increasing NH3/NH4+. This effect was stronger at pH 8.5 than at pH 7.5, suggesting that NH3 is the active component.

v.31:508-512, CANADIAN JOURNAL OF MICROBIOLOGY

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