title: Airborne signals from salt-stressed Arabidopsis plants trigger salinity tolerance in neighboring plants.
abstract: Plants have evolved sophisticated defense mechanisms to overcome their sessile nature. One remarkable strategy is the inter-plant communication mediated by volatile organic compounds (VOCs). Quantity and quality of plant VOCs are intricately regulated by biotic and abiotic stresses, and the alterations facilitate plant community to optimize their growth, development, and endogenous physiology to environmental fluctuations. Here, we report that Arabidopsis thaliana plants that experience high salinity emit VOCs and trigger induction of high salt resistance in neighboring plants. VOC emission of emitter plants is likely correlative to the plant damages to high salt, and VOC-fumigated receiver plants acquire high salt tolerance. The VOC-induced stress tolerance is independent of conventional abscisic acid (ABA) and salt stress signaling pathways. Together, this study demonstrates that salt-induced Arabidopsis VOCs are relevant in priming stress tolerance in neighboring plants. In addition, it also provides insight into how VOCs elicit stress responses in plant community.
authors.affiliation: Department and Research Center of Bioactive Material Sciences; Chonbuk National University; Jeonju, Korea.
authors.forename: Kyounghee
authors.initials: K
authors.lastname: Lee
authors.affiliation: Department and Research Center of Bioactive Material Sciences; Chonbuk National University; Jeonju, Korea; Department of Chemistry and Research Institute of Physics and Chemistry; Chonbuk National University; Jeonju, Korea.
authors.forename: Pil Joon
authors.initials: PJ
authors.lastname: Seo
mesh_terms: D017360:Arabidopsis / Q000502:physiology*; D054712:Salinity; D055049:Salt Tolerance; D055549:Volatile Organic Compounds
chemical_list: D055549:Volatile Organic Compounds
keywords: Arabidopsis; chemical ecology; priming; salt stress; volatile organic compound