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OtherGENE REGULATION AND MOLECULAR GENETICS
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Two Methyl Jasmonate-Insensitive Mutants Show Altered Expression of AtVsp in Response to Methyl Jasmonate and Wounding

S. Berger, E. Bell, J. E. Mullet
S. Berger
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E. Bell
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J. E. Mullet
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Published June 1996. DOI: https://doi.org/10.1104/pp.111.2.525

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Abstract

Jasmonates are plant signal molecules that are derived from lipids through the action of lipoxygenase. Jasmonates regulate gene expression during plant development and in response to water deficit, wounding, and pathogen elicitors. The signal transduction chain that mediates jasmonate action was investigated by isolating and studying two methyl jasmonate (MeJA)-insensitive mutants of Arabidopsis thaliana. The recessive mutants, jin1 and jin4, are nonallelic and neither corresponds to coi1, a previously identified MeJA-insensitive mutant. Both mutants showed reduced sensitivity to MeJA-mediated root growth inhibition as well as reduced MeJA induction of AtVsp in leaves. Expression of AtVsp in flowers was not altered in the mutants. Furthermore, MeJA modulation of the jasmonate-responsive lipoxygenase and phenylalanine ammonia lyase genes was not altered in the mutants. jin4 plants exhibited increased sensitivity to abscisic acid in seed germination assays, whereas jin1 plants showed wild-type sensitivity. Neither mutant showed altered sensitivity to ethylene in hypocotyl growth inhibition assays. jin1 and jin4 identify genes that modulate the response of AtVsp to MeJA in leaves of A. thaliana.

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Two Methyl Jasmonate-Insensitive Mutants Show Altered Expression of AtVsp in Response to Methyl Jasmonate and Wounding
S. Berger, E. Bell, J. E. Mullet
Plant Physiology Jun 1996, 111 (2) 525-531; DOI: 10.1104/pp.111.2.525

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Two Methyl Jasmonate-Insensitive Mutants Show Altered Expression of AtVsp in Response to Methyl Jasmonate and Wounding
S. Berger, E. Bell, J. E. Mullet
Plant Physiology Jun 1996, 111 (2) 525-531; DOI: 10.1104/pp.111.2.525
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Plant Physiology
Vol. 111, Issue 2
Jun 1996
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More in this TOC Section

  • Molecular Characterization of an Arabidopsis Gene Encoding Hydroperoxide Lyase, a Cytochrome P-450 That Is Wound Inducible
  • Characterization of Two Glutamate Decarboxylase cDNA Clones from Arabidopsis
  • Premature Polyadenylation at Multiple Sites within aBacillus thuringiensis Toxin Gene-Coding Region
Show more GENE REGULATION AND MOLECULAR GENETICS

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