Salicylic acid and its location in response to biotic and abiotic stress

► RUBISCO-NahG-GFP was targeted to plastids in Arabidopsis thaliana plants. ► SA was decreased after UV in Rubisco-NahG-GFP plants. ► SA was decreased after pathogen inoculation in Rubisco-NahG-GFP plants. ► Thus, SA is localized in chloroplasts.