Date of Award
6-2018
Degree Name
Master of Science
Department
Biological Sciences
First Advisor
Dr. Jian Yao
Second Advisor
Dr. Yan Lu
Third Advisor
Dr. Todd Barkman
Keywords
Plant, pathology, signaling, salicylate, jasmonate
Access Setting
Masters Thesis-Open Access
Abstract
The jasmonic (JA) and salicylic acid (SA) signaling systems regulate diverse plant developmental processes and immune responses. Due to the opposite end-goals of various pathogen-response pathways, a certain level of antagonism between the JA and SA pathways is required. However, over-suppression of any single pathway would leave a plant susceptible to invasion by a specific class of pathogen. We investigate the regulation of crosstalk between the JA- and SA-mediated immune pathways and how the dilemma of specific susceptibility may be avoided. Manipulation of Arabidopsis thaliana genotypes was utilized to determine the effects of protein knockout on pathogen-specific susceptibility and resistance. The effects of hormone treatment on protein concentration and the effects of protein knockout on the plant transcriptome were investigated as well. Loss of the plant U-box protein 25/26 increased susceptibility of plants to necrotrophic pathogen Pectobacterium carotovorum, indicating that this protein is instrumental in regulation of immune pathways required for optimization of fitness.
Recommended Citation
Rowland, Dustin C., "Plant U-Box Proteins 25 and 26 are Involved in Regulation of Crosstalk Between Salicylate and Jasmonate Signaling Pathways" (2018). Masters Theses. 3700.
https://scholarworks.wmich.edu/masters_theses/3700