OPDA-Ile - a new JA-Ile-independent signal?

Plant Signal Behav. 2016 Nov;11(11):e1253646. doi: 10.1080/15592324.2016.1253646.

Abstract

Expression takes place for most of the jasmonic acid (JA)-induced genes in a COI1-dependent manner via perception of its conjugate JA-Ile in the SCFCOI1-JAZ co-receptor complex. There are, however, numerous genes and processes, which are preferentially induced COI1-independently by the precursor of JA, 12-oxo-phytodienoic acid (OPDA). After recent identification of the Ile-conjugate of OPDA, OPDA-Ile, biological activity of this compound could be unequivocally proven in terms of gene expression. Any interference of OPDA, JA, or JA-Ile in OPDA-Ile-induced gene expression could be excluded by using different genetic background. The data suggest individual signaling properties of OPDA-Ile. Future studies for analysis of an SCFCOI1-JAZ co-receptor-independent route of signaling are proposed.

Keywords: 12-oxo-phytodienoic acid (OPDA); JA-Ile perception; OPDA-Ile-induced gene expression; SCFCOI1-JAZ coreceptor complex; jasmonic acid (JA); jasmonoyl-isoleucine (JA-Ile).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arabidopsis / metabolism
  • Arabidopsis Proteins / metabolism
  • Cyclopentanes / metabolism*
  • Fatty Acids, Unsaturated / metabolism
  • Isoleucine / analogs & derivatives*
  • Isoleucine / metabolism
  • Oxylipins / metabolism
  • Plant Growth Regulators / metabolism
  • Signal Transduction / physiology

Substances

  • Arabidopsis Proteins
  • Cyclopentanes
  • Fatty Acids, Unsaturated
  • Oxylipins
  • Plant Growth Regulators
  • jasmonoyl-isoleucine
  • Isoleucine
  • 12-oxophytodienoic acid
  • jasmonic acid