Conjac is a perennial herbaceous species belonging to Amorphophallus Blume and has been widely distributed throughout the mountainous areas in Southwest China. Because the corm is rich of polysaccharides, conjac has high value in both agriculture and industry. The soft-rot disease of conjac caused by Erwinia carotovora subsp. carotovora has become one of the most serious diseases in conjac, which even causes destructive damage of the crop sometimes. However, the host resistance has not been identifi...