24. The Role of Circadian Rhythms in Modulating Plant Pathogen Defenses

William Howard Butler University
Faculty Sponsor(s): Philip Villani Butler University
This research aims to study the relationship between plant defense and circadian rhythm in the moss Physcomitrella patens. After altering light periods to cause circadian disruption, peroxidase and hydrogen peroxide defense responses were analyzed to better understand how altered light periods influence P. patens ability to fight infection. It is hypothesized that altered light cycles will disrupt the circadian rhythm, leading to a decrease in the amount of peroxidase exported out of the cell, and a decrease in the concentration of hydrogen peroxide within the cell. Disrupting the light cycle for four and six days was found to decrease hydrogen peroxide concentrations within the cell. However, while light disruption for two and four also showed an increase in the amount of peroxidase inside the cell, the six-day trial did not, suggesting the signaling pathway for the release of peroxidase is more complicated than previously thought.
Poster Presentation

When & Where

Irwin Library 3rd Floor