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Red-light effects on blue-light based phototropism in roots and hypocotyls.

Sindelar, Timothy John
http://rave.ohiolink.edu/etdc/view?acc_num=miami1376237085

Abstract Details

2013, Master of Science, Miami University, Botany.
The aim of this research was to clarify the involvement of red-light effects of blue-light phototropism in roots and hypocotyls of Arabidopsis seedlings. In contrast to the effects in shoots, we found that red light inhibits blue-light-based phototropism in seedling roots in the Landsberg ecotype. Our studies show that PHYA and PHYB play a role in inhibition of blue-light phototropism in roots of Landsberg seedlings. However, attenuation of blue-light phototropism was not seen in roots of Columbia ecotype seedlings. Roots of the Columbia seedlings displayed a significant enhancement of blue-light phototropism by red light pretreatment. Inhibition of blue-light phototropism also was observed in roots of C24 ecotype seedlings, and this inhibition was not seen in a transgenic strain deficient in all phytochromes in the root only. These data suggest a difference exists in tropism dependent on ecotype, and that phytochromes are involved in blue-light root phototropism attenuation for applicable ecotypes.
John Kiss (Advisor)
Richard Edelmann (Committee Co-Chair)
58 p.
Botany
Phototropism; Arabidopsis; Red-light phototropism; Blue-light phototropism; Tropism;

Recommended Citations

Citations

  • Sindelar, T. J. (2013). Red-light effects on blue-light based phototropism in roots and hypocotyls. [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376237085

    APA Style (7th edition)

  • Sindelar, Timothy. Red-light effects on blue-light based phototropism in roots and hypocotyls. 2013. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1376237085.

    MLA Style (8th edition)

  • Sindelar, Timothy. "Red-light effects on blue-light based phototropism in roots and hypocotyls." Master's thesis, Miami University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376237085

    Chicago Manual of Style (17th edition)

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© 2013, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.