First published online July 28, 2009; 10.1105/tpc.108.061507
The Plant Cell 21:2143-2162 (2009)
© 2009 American Society of Plant Biologists
The High Light Response in Arabidopsis Involves ABA Signaling between Vascular and Bundle Sheath Cells[W]
Gregorio Galvez-Valdiviesoa,1,
Michael J. Fryera,1,
Tracy Lawsona,
Katie Slatterya,
William Trumanb,
Nicholas Smirnoffb,
Tadao Asamic,
William J. Daviesd,
Alan M. Jonese,
Neil R. Bakera and
Philip M. Mullineauxa,2
a Department of Biological Sciences, University of Essex, Colchester CO4 3SQ, United Kingdom
b School of Biosciences, University of Exeter, Exeter EX4 4QD, United Kingdom
c Department of Applied Biological Chemistry, University of Tokyo, Bunkyo, Tokyo 113-8657, Japan
d Department of Biological Sciences, Lancaster Environment Centre, University of Lancaster, Lancaster LA1 4YQ, United Kingdom
e Departments of Biology and Pharmacology, University of North Carolina, Chapel Hill, North Carolina 27599-3280
2 Address correspondence to mullin{at}essex.ac.uk.
Previously, it has been shown that Arabidopsis thaliana leaves exposed to high light accumulate hydrogen peroxide (H2O2) in bundle sheath cell (BSC) chloroplasts as part of a retrograde signaling network that induces ASCORBATE PEROXIDASE2 (APX2). Abscisic acid (ABA) signaling has been postulated to be involved in this network. To investigate the proposed role of ABA, a combination of physiological, pharmacological, bioinformatic, and molecular genetic approaches was used. ABA biosynthesis is initiated in vascular parenchyma and activates a signaling network in neighboring BSCs. This signaling network includes the G subunit of the heterotrimeric G protein complex, the OPEN STOMATA1 protein kinase, and extracellular H2O2, which together coordinate with a redox-retrograde signal from BSC chloroplasts to activate APX2 expression. High light–responsive genes expressed in other leaf tissues are subject to a coordination of chloroplast retrograde signaling and transcellular signaling activated by ABA synthesized in vascular cells. ABA is necessary for the successful adjustment of the leaf to repeated episodes of high light. This process involves maintenance of photochemical quenching, which is required for dissipation of excess excitation energy.
This article has been cited by other articles:
|
|
|
|
 
M. M. Mubarakshina, B. N. Ivanov, I. A. Naydov, W. Hillier, M. R. Badger, and A. Krieger-Liszkay
Production and diffusion of chloroplastic H2O2 and its implication to signalling
J. Exp. Bot.,
July 1, 2010;
(2010)
erq171v1.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
S. Ito, N. Kitahata, M. Umehara, A. Hanada, A. Kato, K. Ueno, K. Mashiguchi, J. Kyozuka, K. Yoneyama, S. Yamaguchi, et al.
A New Lead Chemical for Strigolactone Biosynthesis Inhibitors
Plant Cell Physiol.,
July 1, 2010;
51(7):
1143 - 1150.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
D. De Vleesschauwer, Y. Yang, C. Vera Cruz, and M. Hofte
Abscisic Acid-Induced Resistance against the Brown Spot Pathogen Cochliobolus miyabeanus in Rice Involves MAP Kinase-Mediated Repression of Ethylene Signaling
Plant Physiology,
April 1, 2010;
152(4):
2036 - 2052.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
A. Dabrowska
A novel seven-transmembrane protein may be a receptor involved in high-light stress signalling and response in Arabidopsis
Bioscience Horizons,
March 1, 2010;
3(1):
49 - 56.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
T. Maruta, A. Tanouchi, M. Tamoi, Y. Yabuta, K. Yoshimura, T. Ishikawa, and S. Shigeoka
Arabidopsis Chloroplastic Ascorbate Peroxidase Isoenzymes Play a Dual Role in Photoprotection and Gene Regulation under Photooxidative Stress
Plant Cell Physiol.,
February 1, 2010;
51(2):
190 - 200.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
