Journal
MOLECULAR PLANT-MICROBE INTERACTIONS
Volume 23, Issue 9, Pages 1184-1196Publisher
AMER PHYTOPATHOLOGICAL SOC
DOI: 10.1094/MPMI-23-9-1184
Keywords
-
Funding
- NSC [NSC93-2317-B-005-009, NSC94-2317-B-005-012]
Ask authors/readers for more resources
Bacterial galU coding for a uridine diphosphate-glucose pyrophosphorylase plays an important role in carbohydrates biosynthesis, including synthesis of lipopolysaccharides (LPS), membrane-derived oligosaccharides, and capsular polysaccharides. In this study, we characterized the galU mutant of Pseudomonas syringae pv. syringae 61 (Psy61), a necrotizing plant pathogen whose pathogenicity depends on a functional type III secretion system (T3SS), and showed that the Psy61 gall] mutant had reduced biofilm formation ability, was nomnotile, and had an assembled T3SS structure but failed to elicit hypersensitive response in resistant plants and necrotic lesions in susceptible plants. Moreover, the defective LPS and other pathogenassociated molecular patterns (PAMPs) on the surface of the Psy61 galU mutant were capable of inducing PAMPtriggered immunity, which severely compromised the ability of the Psy61 gall] mutant to survive in planta. Our results demonstrated that the complete LPS protected plant-pathogenic bacteria from host innate immunity, similar to what was found in animal pathogens, prior to the translocation of T3S effectors and bacterial multiplication.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available