Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-0114104-133335

Document Typethesis
Author NameGurses, Serdar Abidin
TitleRole of HFR1 in Shade Avoidance and Phytochrome A Signaling
DepartmentChemistry & Biochemistry
  • Craig D. Fairchild, Advisor
  • Keywords
  • phytochrome
  • shade avoidance
  • microarray
  • HFR1
  • Date of Presentation/Defense2004-01-13
    Availability unrestricted


    Phytochromes are the photoreceptors mainly responsible for the detection of red and far-red (FR) light and the following responses. HFR1 is a basic helix-loop-helix type putative transcription factor involved in Phytochrome A signaling pathway. First we look at the early phenotype of mutant seedlings lacking a functional HFR1 gene and we show that auxin is involved in the increased hypocotyl phenotype of these seedlings. Northern blots and RT-PCRs showed that ATHB-2, a gene involved in shade avoidance is regulated by HFR1 under FR light. Microarray experiments were performed to find the genes that are early targets of regulation by HFR1.

  • Serdar.pdf

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