Title page for ETD etd-05042010-145729


Type of Document Dissertation
Author Waller, LaChelle Monique
URN etd-05042010-145729
Title Transcriptional profiling of potential regulatory factors modulating defense mechanisms in soybean during Phytophthora sojae infection
Degree PhD
Department Interdisciplinary
Advisory Committee
Advisor Name Title
Tyler, Brett M. Committee Chair
Hoeschele, Ina Committee Member
Maroof, M. A. Saghai Committee Member
McDowell, John M. Committee Member
Keywords
  • Transcriptional Profiling
  • Quantitative Resistance
  • Regulatory Factors
Date of Defense 2010-04-08
Availability unrestricted
Abstract
Quantitative resistance is controlled by multiple genes and has been shown to be a durable form of resistance to pathogens affecting cultivated crops including soybeans (Glycine max L. Merr). Root rot of soybean caused by Phytophthora sojae ranks among the most damaging soybean diseases. Quantitative resistance has proven durable in soybean against P. sojae, however the molecular mechanisms underlying this form of resistance are still unknown. The objective of this project is to gain insight into molecular basis of quantitative resistance in the soybean-P. sojae pathosystem. The approach was to use global transcriptional profiling based on microarray technology to identify genes that were differentially expressed in four cultivars of soybeans with varying levels of quantitative resistance at different time points during infection by P. sojae. Our results provide a better understanding of the potential regulatory factors that may contribute to quantitative resistance during early hours of P. sojae infection.

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