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Role of g -Aminobutyrate and g -Hydroxybutyrate in Plant Communication

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Plant-Environment Interactions

Part of the book series: Signaling and Communication in Plants ((SIGCOMM))

Abstract

The neurotransmitters gamma-aminobutyrate (GABA) and gamma-hydroxybutyrate (GHB) are found in virtually all prokaryotic and eukaryotic organisms. The physiological roles of these metabolites in plants are not yet clear, but both readily accumulate in response to stress through a combination of biochemical and transcriptional processes. GABA accumulation has been associated with the appearance of extracellular GABA, and evidence is available for a role of extracellular GABA in communications between plants and animals, fungi, bacteria or other plants, although the mechanisms by which GABA functions in communication appear to be diverse. As yet there is no evidence from plants of GHB receptors, GHB signaling or extracellular GHB, although the level of the quorum-sensing signal in Agrobacterium is known to be modulated by GHB.

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Acknowledgments

The authors acknowledge research support from the Natural Science and Engineering Research Council of Canada and the Ontario Ministry of Agriculture and Food to B.J.S., and the Centre National de la Recherche Scientifique to D.F.

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Authors and Affiliations

  1. Department of Plant Agriculture, Bovey Bldg., Rm 4237, University of Guelph Guelph, ON, Canada, N1G 2W1

    Barry J. Shelp & Wendy L. Allan

  2. Institut des Sciences du Végétal, Centre National de la Recherche Scientifique, Gif-sur-Yvette, 91 198, France

    Denis Faure

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  1. Barry J. Shelp
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  2. Wendy L. Allan
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  3. Denis Faure
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Correspondence to Barry J. Shelp .

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    Shelp, B.J., Allan, W.L., Faure, D. (2009). Role of g -Aminobutyrate and g -Hydroxybutyrate in Plant Communication. In: Balu¿ka, F. (eds) Plant-Environment Interactions. Signaling and Communication in Plants. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89230-4_4

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