(+)-Sorokinianin is a phytotoxic fungal metabolite originally isolated from B. sorokiniana.1 It inhibits germination of barley (H. vulgare) seeds when used at a concentration of 300 µM. (+)-Sorokinianin is cytotoxic to protoplasts isolated from barley first leaves (IC50 = 150 µM).
1.Nakajima, H., Isomi, K., and Hamasaki, T.Sorokinianin: A novel phytotoxin produced by the phytopathogenic fungus Bipolaris sorokinianaTetrahedron Lett.35(51)9597-9600(1994)