Journal
PLANT SIGNALING & BEHAVIOR
Volume 4, Issue 8, Pages 746-749Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.4.8.9111
Keywords
glycerol-3-phosphate; glycerol metabolism; defense; signaling
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Funding
- USDA-NRI [200403287, 2006-01854]
- NSF [0421914, 0749731]
- Kentucky Science and Engineering Foundation [622RDE-006]
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Conversion of glycerol to glycerol-3-phosphate (G3P) is one of the highly conserved steps of glycerol metabolism in evolutionary diverse organisms. In plants, G3P is produced either via the glycerol kinase (GK)-mediated phosphorylation of glycerol, or via G3P dehydrogenase (G3Pdh)-mediated reduction of dihydroxyacetone phosphate (DHAP). We have recently shown that G3P levels contribute to basal resistance against the hemibiotrophic pathogen, Colletotrichum higginsianum. Since a mutation in the GLY1-encoded G3Pdh conferred more susceptibility compared to a mutation in the GLI1-encoded GK, we proposed that GLY1 is the major contributor of the total G3P pool that participates in defense against C. higginsianum.
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