Plant Pathogenesis
Xanthomonas can infect a wide variety of species including pepper, rice, citrus, cotton, tomato, broccoli, cabbage, and soybeans. Some types of Xanthomonas cause localized leaf spot or leaf streak while others spread systemically and cause black rot or leaf blight disease. They inject a number of effector proteins, including TAL effectors, into the plant via their type iii secretion system. Xanthomonas infecton may be controlled with antibiotic Cefotaxime Sodium. It is claimed that the impurity D (defined in European Pharmacopeia) in the commercial grade of cefotaxime is toxic to the plants. A better grade of Cefotaxime Sodium with no impurity D is recommended.
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