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Quantitative Peptidomics Study Reveals That a Wound-Induced Peptide from PR-1 Regulates Immune Signaling in Tomato

Quantitative Peptidomics Study Reveals That a Wound-Induced Peptide from PR-1 Regulates Immune Signaling in Tomato
Chen, Ying-LanLee, Chi-YingCheng, Kai-TanChang, Wei-HungHuang, Rong-NanNam, Hong GilChen, Yet-Ran
DGIST Authors
Nam, Hong Gil
Issue Date
Plant Cell, 26(10), 4135-4148
Article Type
AcetatesAcetic Acid DerivativeAmino Acid SequenceChemistryChromatography, LiquidCyclopentane DerivativeCyclopentanesDisease ResistanceDNA MicroarrayDrug EffectsGeneticsHost-Pathogen InteractionsHost Pathogen InteractionImmunologyJasmonic Acid Methyl EsterLiquid ChromatographyLycopersicon EsculentumMechanical StressMetabolismMicrobiologyMolecular GeneticsMolecular Sequence DataOligonucleotide Array Sequence AnalysisOxylipinOxylipinsPathogenesis-Related Proteins, PlantPeptidePeptidesPhysiologyPhytohormonePlant DiseasePlant DiseasesPlant Growth RegulatorsPlant LeafPlant LeavesPlant ProteinsProteomeProteomicsPseudomonas SyringaeReverse Transcriptase-Polymerase Chain ReactionStress, MechanicalTandem Mass SpectrometryTomatoTranscriptomeVegetable Protein
Many important cell-to-cell communication events in multicellular organisms are mediated by peptides, but only a few peptides have been identified in plants. In an attempt to address the difficulties in identifying plant signaling peptides, we developed a novel peptidomics approach and used this approach to discover defense signaling peptides in plants. In addition to the canonical peptide systemin, several novel peptides were confidently identified in tomato (Solanum lycopersicum) and quantified to be induced by both wounding and methyl jasmonate (MeJA). A wounding or wounding plus MeJA-induced peptide derived from the pathogenesis-related protein 1 (PR-1) family was found to induce significant antipathogen and minor antiherbivore responses in tomato. This study highlights a role for PR-1 in immune signaling and suggests the potential application of plant endogenous peptides in efforts to defeat biological threats in crop production. As PR-1 is highly conserved across many organisms and the putative peptide from At-PR1 was also found to be bioactive in Arabidopsis thaliana, our results suggest that this peptide may be useful for enhancing resistance to stress in other plant species. © 2014 American Society of Plant Biologists. All rights reserved.
American Society of Plant Biologists
Related Researcher
  • Author Nam, Hong Gil CBRG(Complex Biology Research Group)
  • Research Interests Plant Aging and Life History; Systems Biology; Complexbiology; Comparative Aging Research
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Department of New BiologyCBRG(Complex Biology Research Group)1. Journal Articles

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