Skip Navigation


Plant and Cell Physiology Advance Access originally published online on February 2, 2005
Plant and Cell Physiology 2005 46(2):317-323; doi:10.1093/pcp/pci038
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
46/2/317    most recent
pci038v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (7)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Correll, M. J.
Right arrow Articles by Kiss, J. Z.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Correll, M. J.
Right arrow Articles by Kiss, J. Z.
Agricola
Right arrow Articles by Correll, M. J.
Right arrow Articles by Kiss, J. Z.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

JSPP © 2005

The Roles of Phytochromes in Elongation and Gravitropism of Roots

Melanie J. Correll1 and John Z. Kiss2

Department of Botany, Miami University, Oxford, OH 45056, U.S.A.

2 Corresponding author: E-mail, kissjz{at}muohio.edu; Fax, +1-513-529-4243.

Gravitropic orientation and the elongation of etiolated hypocotyls are both regulated by red light through the phytochrome family of photoreceptors. The importance of phytochromes A and B (phyA and phyB) in these red light responses has been established through studies using phy mutants. To identify the roles that phytochromes play in gravitropism and elongation of roots, we studied the effects of red light on root elongation and then compared the gravitropic curvature from roots of phytochrome mutants of Arabidopsis (phyA, phyB, phyD and phyAB) with wild type. We found that red light inhibits root elongation approximately 35% in etiolated seedlings and that this response is controlled by phytochromes. Roots from dark- and light-grown double mutants (phyAB) and light-grown phyB seedlings have reduced elongation rates compared with wild type. In addition, roots from these seedlings (dark/light-grown phyAB and light-grown phyB) have reduced rates of gravitropic curvature compared with wild type. These results demonstrate roles for phytochromes in regulating both the elongation and gravitropic curvature of roots.

1 Present address: Agricultural and Biological Engineering Department, University of Florida, Gainesville, FL 32611, U.S.A.

Received July 1, 2004; Accepted December 5, 2004
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Plant Physiol.Home page
H. E. Boccalandro, S. N. De Simone, A. Bergmann-Honsberger, I. Schepens, C. Fankhauser, and J. J. Casal
PHYTOCHROME KINASE SUBSTRATE1 Regulates Root Phototropism and Gravitropism
Plant Physiology, January 1, 2008; 146(1): 108 - 115.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
M. L. Molas, J. Z. Kiss, and M. J. Correll
Gene profiling of the red light signalling pathways in roots
J. Exp. Bot., September 1, 2006; 57(12): 3217 - 3229.
[Abstract] [Full Text] [PDF]


Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.