title: Abiotic stresses induce different localizations of anthocyanins in Arabidopsis.
abstract: Anthocyanins are induced in plants in response to abiotic stresses such as drought, high salinity, excess light, and cold, where they often correlate with enhanced stress tolerance. Numerous roles have been proposed for anthocyanins induced during abiotic stresses including functioning as ROS scavengers, photoprotectants, and stress signals. We have recently found different profiles of anthocyanins in Arabidopsis (Arabidopsis thaliana) plants exposed to different abiotic stresses, suggesting that not all anthocyanins have the same function. Here, we discuss these findings in the context of other studies and show that anthocyanins induced in Arabidopsis in response to various abiotic stresses have different localizations at the organ and tissue levels. These studies provide a basis to clarify the role of particular anthocyanin species during abiotic stress.
authors.affiliation: a Center for Applied Plant Sciences (CAPS); The Ohio State University ; Columbus , OH USA.
authors.forename: Nik
authors.initials: N
authors.lastname: Kovinich
authors.forename: Gilbert
authors.initials: G
authors.lastname: Kayanja
authors.forename: Alexandra
authors.initials: A
authors.lastname: Chanoca
authors.forename: Marisa S
authors.initials: MS
authors.lastname: Otegui
authors.forename: Erich
authors.initials: E
authors.lastname: Grotewold
mesh_terms: D065638:Absorption, Radiation; D000872:Anthocyanins / Q000378:metabolism*; D017360:Arabidopsis / Q000187:drug effects / Q000502:physiology*; D008027:Light; D008278:Magnesium Sulfate / Q000494:pharmacology; D013312:Stress, Physiological / Q000187:drug effects
chemical_list: D000872:Anthocyanins; D008278:Magnesium Sulfate
keywords: A11, cyanidin 3-O-[2-(2-(sinapoyl)xylosyl)-6-O-(4(glucosyl)-p-coumaroyl)glucoside]5-[6-O-(malonyl)glucoside]; A5, cyanidin 3-O-[2-xylosyl-6-O-(4(glucosyl)-p-coumaroyl)]5-[6-O-(malonyl)glucoside]; AIC, anthocyanin induction condition; Arabidopsis; C3G, cyanidin 3-O-glucoside; Col, Columbia-0; HPLC-PDA, extinction coefficient, ϵ; ROS, reactive oxygen species; abiotic stress; anthocyanin; high performance liquid chromatography- photodiode array detection; localization