Browsing by Author "Deng, Wen-Ling"

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Effects of gaIU Mutation on Pseudomonas syringae-Plant Interactions
(2010-09-01)
Deng, Wen-Ling
;
Lin, Yuan-Chun
;
Lin, Rong-Hwa
;
Wei, Chia-Fong
;
Huang, Yi-Chiao
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.
SETTING STANDARDS FOR GREEN: AN ANALYSIS OF TAIWAN GREEN HOTEL RATING PROGRAM
(2012)
Shieh, Hwai-Shuh
;
Deng, Wen-Ling
;
管理科學系
;
Department of Management Science
This study first focuses on Taiwan's newly implemented green hotel evaluation scheme, the "Regulatory Standards for Accrediting Green Hotels" and introduces the latest advancement and development in the field. Then, we compare this program with 7 well-known green hotel rating programs. Similar to other programs, Taiwanese is also strong in environmental protection. However, there are two significant differences of Taiwan's rating program: certification not by NGO, and no symbolized rating sign. No matter what kind of rating programs, the results of this study show that almost all of the rating programs' criteria get very little involvement in ecological conservation, so we suggest that rating programs would be made more effective by adding factors of ecological conservation. Surveys should also be conducted on an ongoing basis to clarify and incorporate ecological viewpoints and to keep green hotel rating systems updated. These measures should also enhance the hotel buildings being compatible with the local environment, and the concept of food miles.