The SAM kinase pathway: An integrated circuit for stress signaling in plants

Irute Meskiene, Wilco Ligterink, Laszlo Bögre, Claudia Jonak, Stefan Kiegerl, Judit Balog, Staffan Eklöf, Gustav Ammerer, Heribert Hirt*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Mitogen-activated protein (MAP) kinases are universal transducers of extracellular signals in all eukaryotes. Multiple MAPK pathways exist in each organism that are differentially activated by a variety of stimuli including chemical as well as physical factors. We have characterized the stress-activated MAP kinase (SAMK) pathway in plants that is involved in mediating touch, drought, cold, and wounding. The SAMK pathway is activated by a posttranslational mechanism, but inactivation requires de novo expression of gene(s). One of these genes is MP2C encoding a protein phosphatase type 2C that is able to inactivate the SAMK pathway. MP2C expression itself is regulated by the SAMK pathway and constitutes a negative feedback mechanism for resetting the pathway.

Original languageEnglish (US)
Pages (from-to)339-344
Number of pages6
JournalJournal of Plant Research
Volume111
Issue number1102
StatePublished - Jun 1998
Externally publishedYes

Keywords

  • Map kinase
  • Protein phosphatase 2c
  • Signal transduction
  • Stress

ASJC Scopus subject areas

  • Plant Science

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