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Vein regions important in wound-response electrical signaling. (A) The red highlight (‘excitation zone’) on the Arabidopsis leaf shows regions which must be bitten by insects in order to trigger leaf-to-leaf slow wave potential signaling (Kurenda et al., 2019). (B) The directions of the transpiration streams of two neighboring leaves are indicated with solid blue arrows. Insect damage triggers electrical signaling (dashed red arrows) which travels in the directions indicated.
