Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Capsule production"”.
-
Cellular Dynamics and Disease Outcome of Type 3 Streptococcus pneumoniae Clinical Isolates Differ Between Strains
… known serotypes and each one producing a unique capsule, there is still much more to be studied. The Etiology of Pneumonia in the Community (EPIC) study conducted by the CDC observed the burden of hospitalizations caused by pneumonia while determining the organism responsible. One of the most …
-
Investigation of Pantoea stewartii Quorum-Sensing Controlled Regulators and Genes Important for Infection of Corn
… two major virulence factors of P. stewartii, capsule production and surface motility. However, the function and integration of EsaR downstream targets in P. stewartii were still largely undefined. Moreover, only a draft genome of a reference strain of P. stewartii was publicly available for …
-
Acute Toxicity and Sub-Lethal Effects of Non-Point Source Pollutants on Invertebrates
… was a significant decrease in egg capsule production by I. obsoleta following exposure to concentrations as low as 50 µg L-1. Within the RCERR, animals from Sites 4, 5, and 6 were observed to have significant differences with respect to fecundity, condition index, and/or ECOD …
-
Physiological characterisation of the neonatal meningitic bacterium Cronobacter sakazakii
… revealed more OMPs than non-CC4 at pH 3.5. Capsule production assays showed that most of the C. sakazakii CC4 and non-CC4 strains produced mucoid capsules when cultured on milk agar. The motility of the tested strains was associated with the presence of the fliRQPON flagellar genes. An …
-
Investigation of the quorum-sensing regulon in the corn pathogen Pantoea stewartii
… to and inactivates EsaR, causing derepression of capsule production. EsaR is a member of the LuxR family of QS-dependent transcriptional factors. Most LuxR homologs are unstable and/or insoluble in the absence of AHL which has hindered structural studies. Chapter Two describes the changes in the …
-
Analysis of the Quorum Sensing Regulons of Vibrio parahaemolyticus BB22 and Pantoea stewartii subspecies stewartii
… the quorum-sensing regulator EsaR. RcsA controls capsule production, while LrhA controls motility and adhesion in P. stewartii. The regulons of rcsA and lrhA were defined by RNA-Seq, which also revealed multi-level control of rcsA gene expression (Chapter 5). Tight coordinated and temporal control …
-
In planta studies of the corn pathogen Pantoea stewartii subsp. stewartii and applications of a corn-based industrial byproduct
… were performed on all strains to determine their capsule production and motility phenotypes. Taken together, it was seen that iscR is important for colonization capabilities in planta, both NsrR and IscR act as regulators, and lrp is important for full disease capabilities, perhaps due to reduced …
-
Evaluating protein-protein interactions of CpsA, a virulence factor in Group B Streptococcus
… to its ability to produce a polysaccharide capsule. CpsA has been recognized as an integral part of capsule synthesis as well as having a role in transcriptional regulation. We hypothesize that protein-protein interactions with CpsA play a role in virulence and may be required for CpsA …
-
Pasteurella multocida biofilm formation, and the interrelationship of P. multocida with Histophilus somni in a polymicrobial biofilm during bovine respiratory disease
… from bite wounds. The glycosaminoglycan capsule (CPS) of P. multocida is an essential virulence factor, protecting the bacterium from host defenses. However, chronic infections such as bovine respiratory disease (BRD) and avian cholera may be associated with biofilm formation. Biofilm …