Plant Physiol. Drug Metab Dispos
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
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 PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Robson, PRH.
Right arrow Articles by Smith, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Robson, PRH.
Right arrow Articles by Smith, H.
Agricola
Right arrow Articles by Robson, PRH.
Right arrow Articles by Smith, H.

PLANT PHYSIOLOGY , Vol 110, Issue 1 211-216, Copyright © 1996 by American Society of Plant Biologists

DEVELOPMENT AND GROWTH REGULATION

Genetic and Transgenic Evidence That Phytochromes A and B Act to Modulate the Gravitropic Orientation of Arabidopsis thaliana Hypocotyls

PRH. Robson and H. Smith
Department of Botany, University of Leicester, Leicester, LE1 7RH, United Kingdom

Hypocotyls of Arabidopsis thaliana exhibit negative gravitropism in the dark, growing against the gravity vector. The direction of growth is randomized in red light (R). In single mutants lacking either phytochrome A or B randomization of hypocotyl orientation in R is retained. However, a double mutant lacks this response, indicating that either phytochrome A or B is capable of inducing randomization and phytochrome A and B are the only phytochromes involved in this process. The induction of randomization was confirmed using lines that express to different levels PHYA and PHYB cDNAs. Overexpression of PHYA cDNAs induced randomization of hypocotyl orientation in the dark. Dark randomization was also seen in the phyB-1 mutant but not in two other phyB alleles, suggesting that dark randomization in the phyB-1 line may be due to a second mutation. When germination was induced by gibberellin, rather than exposure to brief white light, randomization in the dark associated with phytochrome A overproduction was not observed but was retained in the phyB-1 mutant. Overexpression of PHYB cDNAs induced a light-dependent randomization of hypocotyl orientation that responded to R:far-red light ratio. We conclude that the default situation in Arabidopsis hypocotyls is, therefore, negative gravitropism, and either phytochrome A or phytochrome B can mediate randomization.


This article has been cited by other articles:


Home page
 Plant Physiol.Home page
I. Schepens, H. E. Boccalandro, C. Kami, J. J. Casal, and C. Fankhauser
PHYTOCHROME KINASE SUBSTRATE4 Modulates Phytochrome-Mediated Control of Hypocotyl Growth Orientation
Plant Physiology, June 1, 2008; 147(2): 661 - 671.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
J. D. Mayfield, K. M. Folta, A.-L. Paul, and R. J. Ferl
The 14-3-3 Proteins {micro} and {upsilon} Influence Transition to Flowering and Early Phytochrome Response
Plant Physiology, December 1, 2007; 145(4): 1692 - 1702.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
J. Rosler, I. Klein, and M. Zeidler
Arabidopsis fhl/fhy1 double mutant reveals a distinct cytoplasmic action of phytochrome A
PNAS, June 19, 2007; 104(25): 10737 - 10742.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
K. A. Oliverio, M. Crepy, E. L. Martin-Tryon, R. Milich, S. L. Harmer, J. Putterill, M. J. Yanovsky, and J. J. Casal
GIGANTEA Regulates Phytochrome A-Mediated Photomorphogenesis Independently of Its Role in the Circadian Clock
Plant Physiology, May 1, 2007; 144(1): 495 - 502.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
T. J. Emborg, J. M. Walker, B. Noh, and R. D. Vierstra
Multiple Heme Oxygenase Family Members Contribute to the Biosynthesis of the Phytochrome Chromophore in Arabidopsis
Plant Physiology, March 1, 2006; 140(3): 856 - 868.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
E. Mano, G. Horiguchi, and H. Tsukaya
Gravitropism in Leaves of Arabidopsis thaliana (L.) Heynh.
Plant Cell Physiol., February 1, 2006; 47(2): 217 - 223.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
R. Lin and H. Wang
Two Homologous ATP-Binding Cassette Transporter Proteins, AtMDR1 and AtPGP1, Regulate Arabidopsis Photomorphogenesis and Root Development by Mediating Polar Auxin Transport
Plant Physiology, June 1, 2005; 138(2): 949 - 964.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
M. J. Correll and J. Z. Kiss
The Roles of Phytochromes in Elongation and Gravitropism of Roots
Plant Cell Physiol., February 1, 2005; 46(2): 317 - 323.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
E. Oh, J. Kim, E. Park, J.-I. Kim, C. Kang, and G. Choi
PIL5, a Phytochrome-Interacting Basic Helix-Loop-Helix Protein, Is a Key Negative Regulator of Seed Germination in Arabidopsis thaliana
PLANT CELL, November 1, 2004; 16(11): 3045 - 3058.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
M. Ohgishi, K. Saji, K. Okada, and T. Sakai
Functional analysis of each blue light receptor, cry1, cry2, phot1, and phot2, by using combinatorial multiple mutants in Arabidopsis
PNAS, February 24, 2004; 101(8): 2223 - 2228.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
K. A. Franklin and G. C. Whitelam
Light signals, phytochromes and cross-talk with other environmental cues
J. Exp. Bot., January 2, 2004; 55(395): 271 - 276.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
J. Z. Kiss, J. L. Mullen, M. J. Correll, and R. P. Hangarter
Phytochromes A and B Mediate Red-Light-Induced Positive Phototropism in Roots
Plant Physiology, March 1, 2003; 131(3): 1411 - 1417.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
J. Digby and R.D. Firn
Light modulation of the gravitropic set-point angle (GSA)
J. Exp. Bot., February 1, 2002; 53(367): 377 - 381.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
M.-S. Soh, Y.-M. Kim, S.-J. Han, and P.-S. Song
REP1, a Basic Helix-Loop-Helix Protein, Is Required for a Branch Pathway of Phytochrome A Signaling in Arabidopsis
PLANT CELL, November 1, 2000; 12(11): 2061 - 2074.
[Abstract] [Full Text]

Home page
 Genes Dev.Home page
C. D. Fairchild, M. A. Schumaker, and P. H. Quail
HFR1 encodes an atypical bHLH protein that acts in phytochrome A signal transduction
Genes & Dev., September 15, 2000; 14(18): 2377 - 2391.
[Abstract] [Full Text]

Home page
 Plant Physiol.Home page
B. L. Montgomery, K.-C. Yeh, M. W. Crepeau, and J. C. Lagarias
Modification of Distinct Aspects of Photomorphogenesis via Targeted Expression of Mammalian Biliverdin Reductase in Transgenic Arabidopsis Plants
Plant Physiology, October 1, 1999; 121(2): 629 - 640.
[Abstract] [Full Text]

Home page
 FASEB J.Home page
R. RANJEVA, A. GRAZIANA, and C. MAZARS
Plant graviperception and gravitropism: a newcomer's view
FASEB J, May 1, 1999; 13(9001): 135 - 141.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
Q Tian and J. Reed
Control of auxin-regulated root development by the Arabidopsis thaliana SHY2/IAA3 gene
Development, January 2, 1999; 126(4): 711 - 721.
[Abstract] [PDF]

Home page
 Plant Physiol.Home page
S. Vitha, M. Yang, J. Z. Kiss, and F. D. Sack
Light Promotion of Hypocotyl Gravitropism of a Starch-Deficient Tobacco Mutant Correlates with Plastid Enlargement and Sedimentation
Plant Physiology, February 1, 1998; 116(2): 495 - 502.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1996 by the American Society of Plant Biologists