Plant Physiol. Journal of Pharmacology and Experimental Therapeutics
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

First published online November 26, 2003; 10.1104/pp.103.024372

Plant Physiology 133:1464-1470 (2003)
© 2003 American Society of Plant Biologists

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
133/4/1464    most recent
pp.103.024372v1
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 Related articles in Plant Physiol.
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
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 Web of Science (18)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Folta, K. M.
Right arrow Articles by Spalding, E. P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Folta, K. M.
Right arrow Articles by Spalding, E. P.
Agricola
Right arrow Articles by Folta, K. M.
Right arrow Articles by Spalding, E. P.

Primary Inhibition of Hypocotyl Growth and Phototropism Depend Differently on Phototropin-Mediated Increases in Cytoplasmic Calcium Induced by Blue Light1

Kevin M. Folta2,*, Erin J. Lieg, Tessa Durham and Edgar P. Spalding

Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin 53706

The phototropin photoreceptors transduce blue-light signals into several physiological and developmental responses in plants. A transient rise in cytoplasmic calcium (Ca2+) that begins within seconds of phototropin 1 (phot1) excitation is believed to be an important element in the transduction pathways leading to one or more of the phot1-dependent responses. The goal of the present work was to determine whether the Ca2+ response was necessary for (a) the inhibition of hypocotyl elongation that develops within minutes of the irradiation, and (b) hypocotyl phototropism (curved growth of the stem in response to asymmetric illumination). After determining that pulses of light delivering photon fluences of between 1 and 1,000 µmol m-2 induced growth inhibition mediated by phot1 without significant interference from other photosensory pathways, the effect of blocking the Ca2+ rise was assessed. Treatment of seedlings with a Ca2+ chelator prevented the rise in cytoplasmic Ca2+ and prevented phot1-mediated growth inhibition. However, the same chelator treatment did not impair phot1-mediated phototropism. Thus, it appears that the early, transient rise in cytoplasmic Ca2+ is an important intermediary process in at least one but not all phot1-signaling pathways.

Article, publication date, and citation information can be found at www.plantphysiol.org/cgi/doi/10.1104/pp.103.024372.

1 This work was supported by the National Science Foundation (grant no. IBN-9974585).

2 Present address: Horticultural Sciences Department, P.O. Box 110690, 1301 Fifield Hall, University of Florida, Gainesville, FL 32611.

* Corresponding author; e-mail kfolta{at}mail.ifas.ufl.edu; fax 352-392-5653.

Received March 30, 2003; returned for revision May 26, 2003; accepted August 13, 2003.


Related articles in Plant Physiol.:

Light Signaling
Edgar P. Spalding
Plant Physiol. 2003 133: 1417-1419. [Full Text]  



This article has been cited by other articles:


Home page
 Plant Cell PhysiolHome page
A. Harada and K.-i. Shimazaki
Measurement of Changes in Cytosolic Ca2+ in Arabidopsis Guard Cells and Mesophyll Cells in Response to Blue Light
Plant Cell Physiol., February 1, 2009; 50(2): 360 - 373.
[Abstract] [Full Text] [PDF]

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 CellHome page
X. Chen, W.-H. Lin, Y. Wang, S. Luan, and H.-W. Xue
An Inositol Polyphosphate 5-Phosphatase Functions in PHOTOTROPIN1 Signaling in Arabidopis by Altering Cytosolic Ca2+
PLANT CELL, February 1, 2008; 20(2): 353 - 366.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
G. Wu and E. P. Spalding
Separate functions for nuclear and cytoplasmic cryptochrome 1 during photomorphogenesis of Arabidopsis seedlings
PNAS, November 20, 2007; 104(47): 18813 - 18818.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
K. M. Folta and S. A. Maruhnich
Green light: a signal to slow down or stop
J. Exp. Bot., September 1, 2007; 58(12): 3099 - 3111.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
X. Zhang, A. Takemiya, T. Kinoshita, and K.-i. Shimazaki
Nitric Oxide Inhibits Blue Light-Specific Stomatal Opening Via Abscisic Acid Signaling Pathways in Vicia Guard Cells
Plant Cell Physiol., May 1, 2007; 48(5): 715 - 723.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
C. W. Whippo and R. P. Hangarter
Phototropism: Bending towards Enlightenment.
PLANT CELL, May 1, 2006; 18(5): 1110 - 1119.
[Full Text] [PDF]

Home page
 Plant Physiol.Home page
S. L. DeBlasio, D. L. Luesse, and R. P. Hangarter
A Plant-Specific Protein Essential for Blue-Light-Induced Chloroplast Movements
Plant Physiology, September 1, 2005; 139(1): 101 - 114.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
E. B. Tucker, M. Lee, S. Alli, V. Sookhdeo, M. Wada, T. Imaizumi, M. Kasahara, and P. K. Hepler
UV-A Induces Two Calcium Waves in Physcomitrella patens
Plant Cell Physiol., August 1, 2005; 46(8): 1226 - 1236.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
K. M. Folta
Green Light Stimulates Early Stem Elongation, Antagonizing Light-Mediated Growth Inhibition
Plant Physiology, July 1, 2004; 135(3): 1407 - 1416.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2003 by the American Society of Plant Biologists