A phytopathogen that causes kiwifruit bacterial bleeding canker disease

Pseudomonas syringae pv. actinidiae (Psa) is a gram-negative phytopathogen that causes kiwifruit bacterial bleeding canker disease. Kiwifruit bacterial bleeding canker disease is a lethal disease to kiwifruit production and once infected, the pathogen can disseminate rapidly, psa was predicted to pose a major threat to global kiwifruit production. It is important to study the phytopathogen.