The plant NADPH oxidase RBOHD mediates rapid systemic signaling in response to diverse stimuli

Gad Miller, Karen Schlauch, Rachel Tam, Diego Cortes, Miguel A. Torres, Vladimir Shulaev, Jeffery L. Dangl, Ron Mittler

Research output: Contribution to journalArticlepeer-review

860 Scopus citations

Abstract

Cell-to-cell communication and long-distance signaling play a key role in the response of plants to pests, mechanical wounding, and extreme environmental conditions. Here, we report on a rapid systemic signal in Arabidopsis thaliana that traveled at a rate of 8.4 centimeters per minute and was dependent on the respiratory burst oxidase homolog D (RbohD) gene. Signal propagation was accompanied by the accumulation of reactive oxygen species (ROS) in the extracellular spaces between cells and was inhibited by the suppression of ROS accumulation at locations distant from the initiation site. The rapid systemic signal was triggered by wounding, heat, cold, high-intensity light, and salinity stresses. Our results reveal the profound role that ROS play in mediating rapid, long-distance, cell-to-cell propagating signals in plants.

Original languageEnglish
Pages (from-to)ra45
JournalScience Signaling
Volume2
Issue number84
DOIs
StatePublished - 18 Aug 2009
Externally publishedYes

Funding

FundersFunder number
National Science Foundation0639964
National Center for Research ResourcesP20RR016464

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