Amorphophallus is a monocotyledonous perennial herb. Konjac glucomannan which is rich in the corm has been applied widely in food, medicine, chemistry and agriculture industry. Soft rot disease is the main disease of Amorphophallus, which has greatly affected Amorphophallus production, becoming a holdback of Amorphophallus industry development. The pathogen of Amorphophallus soft rot disease is Erwinia carotovora subsp carotovora (Ecc). Besides Amorphophallus, this pathogen could also cause soft rot diseas...