Salicylic acid signaling inhibits apoplastic reactive oxygen species signaling.

ABSTRACT:

Background

Reactive oxygen species (ROS) are used by plants as signaling molecules during stress and development. Given the amount of possible challenges a plant face from their environment, plants need to activate and prioritize between potentially conflicting defense signaling pathways. Until recently, most studies on signal interactions have focused on phytohormone interaction, such as the antagonistic relationship between salicylic acid (SA)-jasmonic acid and cytokinin-auxin.

Results

In this study, we report an antagonistic interaction between SA signaling and apoplastic ROS signaling. Treatment with ozone (O3) leads to a ROS burst in the apoplast and induces extensive changes in gene expression and elevation of defense hormones. However, Arabidopsis thaliana dnd1 (defen

SUBMITTER: Xu E 

PROVIDER: S-EPMC4057906 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature