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Science 310 (5745): 71-73

Copyright © 2005 by the American Association for the Advancement of Science

G Proteins Go Green: A Plant G Protein Signaling FAQ Sheet

Sarah M. Assmann

Abstract: Plants, like animals, use signal transduction pathways based on heterotrimeric guanine nucleotide–binding proteins (G proteins) to regulate many aspects of development and cell signaling. Some components of G protein signaling are highly conserved between plants and animals and some are not. This Viewpoint compares key aspects of G protein signal transduction in plants and animals and describes the current knowledge of this system in plants, the questions that still await exploration, and the value of research on plant G proteins to scientists who do not study plants. Pathways in Science's Signal Transduction Knowledge Environment Connections Maps database provide details about the emerging roles of G proteins in several cellular processes of plants.

Biology Department, Pennsylvania State University, 208 Mueller Laboratory, University Park, PA 16802, USA.

E-mail: sma3{at}

Boolean modeling of transcriptome data reveals novel modes of heterotrimeric G-protein action.
S. Pandey, R.-S. Wang, L. Wilson, S. Li, Z. Zhao, T. E. Gookin, S. M. Assmann, and R. Albert (2014)
Mol Syst Biol 6, 372
   Abstract »    Full Text »    PDF »
Abscisic Acid-Responsive Guard Cell Metabolomes of Arabidopsis Wild-Type and gpa1 G-Protein Mutants.
X. Jin, R.-S. Wang, M. Zhu, B. W. Jeon, R. Albert, S. Chen, and S. M. Assmann (2013)
PLANT CELL 25, 4789-4811
   Abstract »    Full Text »    PDF »
Role and Interrelationship of G{alpha} Protein, Hydrogen Peroxide, and Nitric Oxide in Ultraviolet B-Induced Stomatal Closure in Arabidopsis Leaves.
J.-M. He, X.-G. Ma, Y. Zhang, T.-F. Sun, F.-F. Xu, Y.-P. Chen, X. Liu, and M. Yue (2013)
Plant Physiology 161, 1570-1583
   Abstract »    Full Text »    PDF »
Ca2+-dependent GTPase, Extra-large G Protein 2 (XLG2), Promotes Activation of DNA-binding Protein Related to Vernalization 1 (RTV1), Leading to Activation of Floral Integrator Genes and Early Flowering in Arabidopsis.
J. B. Heo, S. Sung, and S. M. Assmann (2012)
J. Biol. Chem. 287, 8242-8253
   Abstract »    Full Text »    PDF »
The {alpha}-subunit of the heterotrimeric G-protein affects jasmonate responses in Arabidopsis thaliana.
H. Okamoto, C. Gobel, R. G. Capper, N. Saunders, I. Feussner, and M. R. Knight (2009)
J. Exp. Bot. 60, 1991-2003
   Abstract »    Full Text »    PDF »
Abscisic Acid Receptors: Multiple Signal-perception Sites.
X.-F. Wang and D.-P. Zhang (2008)
Ann. Bot. 101, 311-317
   Abstract »    Full Text »    PDF »
Response to Comment on "A G Protein Coupled Receptor Is a Plasma Membrane Receptor for the Plant Hormone Abscisic Acid".
X. Liu, Y. Yue, W. Li, and L. Ma (2007)
Science 318, 914d
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Heterotrimeric G Protein {gamma} Subunits Provide Functional Selectivity in G{beta}{gamma} Dimer Signaling in Arabidopsis.
Y. Trusov, J. E. Rookes, K. Tilbrook, D. Chakravorty, M. G. Mason, D. Anderson, J.-G. Chen, A. M. Jones, and J. R. Botella (2007)
PLANT CELL 19, 1235-1250
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A G Protein-Coupled Receptor Is a Plasma Membrane Receptor for the Plant Hormone Abscisic Acid.
X. Liu, Y. Yue, B. Li, Y. Nie, W. Li, W.-H. Wu, and L. Ma (2007)
Science 315, 1712-1716
   Abstract »    Full Text »    PDF »
The G{alpha} Protein Controls a pH-Dependent Signal Path to the Induction of Phytoalexin Biosynthesis in Eschscholzia californica.
K. Viehweger, W. Schwartze, B. Schumann, W. Lein, and W. Roos (2006)
PLANT CELL 18, 1510-1523
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A bifurcating pathway directs abscisic acid effects on stomatal closure and opening in Arabidopsis..
G. Mishra, W. Zhang, F. Deng, J. Zhao, and X. Wang (2006)
Science 312, 264-266
   Abstract »    Full Text »    PDF »

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