Rapid transmission of oxidative and nitrosative stress signals from roots to shoots in Arabidopsis

Ricardo Capone, Budhi Sagar Tiwari, Alex Levine*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Protein kinases play a central role in signal transduction pathways in eukaryotes. A highly conserved group of kinases, termed mitogen-activated- protein kinases (MAPKs) was shown to mediate many diverse stress responses. In plants, MAPKs were shown to function in resistance responses to many biotic and abiotic stresses. Here, we show that exposure of Arabidopsis roots to hydrogen peroxide or to nitric oxide resulted in rapid activation of protein kinases in the shoots that exhibited MAPK properties. The same pattern of kinases was induced by direct injection of these compounds into leaves, indicating accurate long-distance transmission of H2O2 and NO signals. These results are important for the understanding of redox signal transmission from the rhizosphere throughout the plant. Crown

Original languageAmerican English
Pages (from-to)425-428
Number of pages4
JournalPlant Physiology and Biochemistry
Volume42
Issue number5
DOIs
StatePublished - May 2004

Keywords

  • Arabidopsis
  • MAP kinase
  • Nitric oxide
  • Oxidative stress
  • ROS
  • SNP
  • Sodium nitroprusside
  • mitogen activated protein kinase
  • p38 kinase
  • reactive oxygen species
  • sodium nitroprusside

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