-The researchers proved the mechanisms of their antagonistic bacteria and suggested that:
-The Pseudomonas sp. KA19 can produce siderophore.
-The siderophore will catch ferrous and form a ferric-sidoropore complex which is unavailable to Xcc but Pseudomonas KA19 can use this complex.
-The Bacillus sp. SE cannot produce siderophore but can produce autolysins and lactonase which can digest Xcc cell wall.
-That is why we apply both antagonistic bacteria in the same pot, the disease incidence and Xcc population is significantly decrease.