標題: Effects of gaIU Mutation on Pseudomonas syringae-Plant Interactions
作者: Deng, Wen-Ling
Lin, Yuan-Chun
Lin, Rong-Hwa
Wei, Chia-Fong
Huang, Yi-Chiao
Peng, Hwei-Ling
Huang, Hsiou-Chen
生物科技學系
Department of Biological Science and Technology
公開日期: 1-九月-2010
摘要: 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.
URI: http://dx.doi.org/10.1094/MPMI-23-9-1184
http://hdl.handle.net/11536/32256
ISSN: 0894-0282
DOI: 10.1094/MPMI-23-9-1184
期刊: MOLECULAR PLANT-MICROBE INTERACTIONS
Volume: 23
Issue: 9
起始頁: 1184
結束頁: 1196
顯示於類別:期刊論文


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