Ophiobolin B, a sesterterpene metabolite of Helminthosporium oryzae, inhibits proton extrusion from maize coleoptiles. Ophiobolin B inhibits fusicoccin (FC) promoted proton extrusion, potassium uptake and cell enlargement. The MIC values with the antifungal effect of Ophiobolins B on different zygomycetes is 25–50 μg/mL. References: Gianani L, et al. Effects of ophiobolin B on cell enlargement and H(+)/K (+) exchange in maize coleoptile tissues. Planta. 1979 Jan;146(3):271-4. [2]. Krizsán K, et al. Effect of the sesterterpene-type metabolites, ophiobolins A and B, on zygomycetes fungi. FEMS Microbiol Lett. 2010 Dec;313(2):135-40.

纯度：≥98%

CAS：5601-74-1