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SPA1: A Protein Involved with Photoresponses Incited by Red and Green Light

McCoshum, Shaun Michael
http://rave.ohiolink.edu/etdc/view?acc_num=miami1249975178

Abstract Details

2009, Master of Science, Miami University, Botany.
Plants respond to different qualities and quantities of light through photoreceptors, which lead to a cascade of genes being turned on and off. Phytochrome A is a photoreceptor that is active in plant development from seed germination to flowering and triggers the phytochrome A pathway. The SPA1 protein is specific to the phytochrome A pathway and is a negative regulator of phyA. By exposing plants to various light treatments, we found spa1 plants have enhanced positive phototropic responses of roots to red light. We also report that red and green light pulses interrupt phototropic responses of hypocotyls to blue light via SPA1. From these findings, we conclude that PHYA is responsible for positive phototropic responses of roots, and that the SPA1 protein is a key protein in crosstalk between photoreceptor pathways.
John Z. Kiss, PhD (Advisor)
Richard Moore, PhD (Committee Member)
Michael Vincent, PhD (Committee Member)
51 p.
Botany
Photoreceptor pathway; PHYA; phytochrome A; SPA1; Supressor of Phytochrome A; Red; green; blue; light; crosstalk

Recommended Citations

Citations

  • McCoshum, S. M. (2009). SPA1: A Protein Involved with Photoresponses Incited by Red and Green Light [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1249975178

    APA Style (7th edition)

  • McCoshum, Shaun. SPA1: A Protein Involved with Photoresponses Incited by Red and Green Light. 2009. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1249975178.

    MLA Style (8th edition)

  • McCoshum, Shaun. "SPA1: A Protein Involved with Photoresponses Incited by Red and Green Light." Master's thesis, Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1249975178

    Chicago Manual of Style (17th edition)

miami1249975178
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© 2009, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.