Abstract
Parsley cells recognize the fungal plant pathogen Phytophthora sojae through a plasma membrane receptor. A pathogen-derived oligopeptide elicitor binds to this receptor and thereby stimulates a multicomponent defense response through sequential activation of ion channels and an oxidative burst. An elicitor-responsive mitogen-activated protein (MAP) kinase was identified that acts downstream of the ion channels but independently or upstream of the oxidative burst. Upon receptor-mediated activation, the MAP kinase is translocated to the nucleus where it might interact with transcription factors that induce expression of defense genes.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Amino Acid Sequence
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Amphotericin B / pharmacology
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Anthracenes / pharmacology
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Calcium-Calmodulin-Dependent Protein Kinases / chemistry
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Calcium-Calmodulin-Dependent Protein Kinases / genetics
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Calcium-Calmodulin-Dependent Protein Kinases / metabolism*
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Cell Nucleus / enzymology
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Cells, Cultured
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Enzyme Activation
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Fungal Proteins / pharmacology*
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Ion Channels / drug effects
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Ion Channels / metabolism
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Membrane Glycoproteins / pharmacology*
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Molecular Sequence Data
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Onium Compounds / pharmacology
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Peptide Fragments / pharmacology
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Phosphorylation
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Phytophthora / metabolism
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Plants / enzymology*
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Plants / genetics
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Plants / microbiology
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Respiratory Burst / drug effects
Substances
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Anthracenes
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Fungal Proteins
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Ion Channels
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Membrane Glycoproteins
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Onium Compounds
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Peptide Fragments
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elicitor protein, Phytophthora megasperma
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diphenyleneiodonium
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9-anthroic acid
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Amphotericin B
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Calcium-Calmodulin-Dependent Protein Kinases