Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1993 Sep;103(1):15-19.
doi: 10.1104/pp.103.1.15.

Genetic Evidence That the Red-Absorbing Form of Phytochrome B Modulates Gravitropism in Arabidopsis thaliana

E. Liscum  1 , R. P. Hangarter
Affiliations

Genetic Evidence That the Red-Absorbing Form of Phytochrome B Modulates Gravitropism in Arabidopsis thaliana

E. Liscum et al. Plant Physiol. 1993 Sep.

Abstract

Hypocotyls of dark-grown Arabidopsis seedlings exhibit strong negative gravitropism, whereas in red light, gravitropism is strongly reduced. Red/far-red light-pulse experiments and analysis of specific phytochrome-deficient mutants indicate that the red-absorbing (Pr) form of phytochrome B regulates normal hypocotyl gravitropism in darkness, and depletion of Pr by photoconversion to the far-red-absorbing form attenuates hypocotyl gravitropism. These studies provide genetic evidence that the Pr form of phytochrome has an active function in plant development.

PubMed Disclaimer

References

    1. Plant Physiol. 1987;83:241-3 - PubMed
    1. Plant Cell. 1989 Sep;1(9):867-880 - PubMed
    1. Plant Physiol. 1985 Jan;77(1):248-51 - PubMed
    1. Plant Physiol. 1992 Sep;100(1):267-71 - PubMed
    1. Planta. 1989;177:185-97 - PubMed