Abstract
The hypothesis that rapid [gamma]-aminobutyrate (GABA) accumulation is a plant defense against phytophagous insects was investigated. Increasing GABA levels in a synthetic diet from 1.6 to 2.6 [mu]mol g-1 fresh weight reduced the growth rates, developmental rates, and survival rates of cultured Choristoneura rosaceana cv Harris larvae. Simulation of the mechanical damage resulting from phytophagous activity increased soybean (Glycine max L.) leaf GABA 10- to 25-fold within 1 to 4 min. Pulverizing leaf tissue resulted in a value of 2.15 ([plus or minus]0.11 SE) [mu]mol GABA g-1 fresh weight.
Full Text
The Full Text of this article is available as a PDF (437.6 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Arazi T., Baum G., Snedden W. A., Shelp B. J., Fromm H. Molecular and biochemical analysis of calmodulin interactions with the calmodulin-binding domain of plant glutamate decarboxylase. Plant Physiol. 1995 Jun;108(2):551–561. doi: 10.1104/pp.108.2.551. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Breitkreuz K. E., Shelp B. J. Subcellular Compartmentation of the 4-Aminobutyrate Shunt in Protoplasts from Developing Soybean Cotyledons. Plant Physiol. 1995 May;108(1):99–103. doi: 10.1104/pp.108.1.99. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Carroll A. D., Fox G. G., Laurie S., Phillips R., Ratcliffe R. G., Stewart G. R. Ammonium Assimilation and the Role of [gamma]-Aminobutyric Acid in pH Homeostasis in Carrot Cell Suspensions. Plant Physiol. 1994 Oct;106(2):513–520. doi: 10.1104/pp.106.2.513. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Casida J. E. Insecticide action at the GABA-gated chloride channel: recognition, progress, and prospects. Arch Insect Biochem Physiol. 1993;22(1-2):13–23. doi: 10.1002/arch.940220104. [DOI] [PubMed] [Google Scholar]
- Crawford L. A., Bown A. W., Breitkreuz K. E., Guinel F. C. The Synthesis of [gamma]-Aminobutyric Acid in Response to Treatments Reducing Cytosolic pH. Plant Physiol. 1994 Mar;104(3):865–871. doi: 10.1104/pp.104.3.865. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Irving S. N., Osborne M. P., Wilson R. G. Virtual absence of L-glutamate from the haemoplasm of arthropod blood. Nature. 1976 Sep 30;263(5576):431–433. doi: 10.1038/263431a0. [DOI] [PubMed] [Google Scholar]
- Snedden W. A., Arazi T., Fromm H., Shelp B. J. Calcium/Calmodulin Activation of Soybean Glutamate Decarboxylase. Plant Physiol. 1995 Jun;108(2):543–549. doi: 10.1104/pp.108.2.543. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wallace W., Secor J., Schrader L. E. Rapid Accumulation of gamma-Aminobutyric Acid and Alanine in Soybean Leaves in Response to an Abrupt Transfer to Lower Temperature, Darkness, or Mechanical Manipulation. Plant Physiol. 1984 May;75(1):170–175. doi: 10.1104/pp.75.1.170. [DOI] [PMC free article] [PubMed] [Google Scholar]