TY - JOUR T1 - Toxin Production and Pathogenicity Of Ceratocystis ULMI JF - Arboriculture & Urban Forestry (AUF) SP - 258 LP - 260 DO - 10.48044/jauf.1981.062 VL - 7 IS - 10 AU - Lawrence Pusey AU - Charles L. Wilson Y1 - 1981/10/01 UR - http://auf.isa-arbor.com/content/7/10/258.abstract N2 - Highly pathogenic isolates of Ceratocystis ulmi produced more toxin (cerato-ulmin) than less pathogenic ones. Toxin production may be a useful criterion for distinguishing aggressiveness among C. ulmi strains. ER -