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Full-Text Articles in Pathogenic Microbiology
Analysis Of The Chondroitinase Operon Of Flavobacterium Columnare, Erin L. Sorlien
Analysis Of The Chondroitinase Operon Of Flavobacterium Columnare, Erin L. Sorlien
Senior Honors Projects
Analysis of the chondroitinase operon of Flavobacterium columnare
Erin Sorlien
Major
Cell and Molecular Biology, Chemistry
Advisor
Dr. David R. Nelson
Date
May 2, 2013
Keywords
Flavobacterium columnare, columnaris disease, chondroitin AC lyase, complementation, csl operon
Abstract
Flavobacterium columnare, an opportunistic bacterial pathogen of fish, is the causative agent of columnaris disease (CD). The bacterium is a Gram-negative rod that exhibits gliding motility and avidly forms biofilms. CD affects both wild and cultured freshwater fish, and continues to cause large economic losses to the fish farming industry. According to an investigation conducted by the National Animal Health Monitoring System, CD …
Detection Of Viable Microorganisms Using Propidium Monoazide, Erik J. Mcfarland, Adrian Ponce Dr.
Detection Of Viable Microorganisms Using Propidium Monoazide, Erik J. Mcfarland, Adrian Ponce Dr.
STAR Program Research Presentations
Propidium monoazide (PMA) is a molecular tool used to assess viability of microorganisms. Currently, PMA is thought to discern viability through membrane permeability; PMA enters only membrane compromised cells, irreversibly crosslinks to theirDNAand precipitates theDNAout of solution, preventing it from being amplified during polymerase chain reaction (PCR). Using PMA on a sample of live and dead microorganisms results in only theDNAof living organisms being amplified and identified. Therefore, a comparison ofPCRresults with and without PMA allows one to determine the live fraction and total population, respectively.
Current literature provides conflicting evidence as to the effectiveness of the technique. Our research …