title: Integration of calcium and ABA signaling.
abstract: Abiotic stresses simultaneously trigger an increase in the level of the plant hormone abscisic acid (ABA) and in the concentration of cytosolic calcium. Subsequent signaling cascades convey stomata regulation and transcriptional responses. Increasing evidence points to direct interrelations of both signaling systems on multiple levels of information processing. In this context, protein phosphatases 2Cs of the clade A appear to function as master regulators of both ABA and calcium signaling. In this review, we focus on informative examples for convergence of ABA and calcium signaling on common target proteins and discuss emerging concepts, consequences and open questions about the integration of calcium and ABA signaling.
authors.affiliation: Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149 Münster, Germany.
authors.forename: Kai H
authors.initials: KH
authors.lastname: Edel
authors.affiliation: Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149 Münster, Germany; College of Science, King Saud University, Riyadh 11451, Saudi Arabia. Electronic address: jkudla@uni-muenster.de.
authors.forename: Jörg
authors.initials: J
authors.lastname: Kudla
mesh_terms: D000040:Abscisic Acid / Q000378:metabolism*; D002118:Calcium / Q000378:metabolism*; D010937:Plant Growth Regulators / Q000378:metabolism*; D018521:Plant Physiological Phenomena; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D015398:Signal Transduction; D013312:Stress, Physiological
chemical_list: D010937:Plant Growth Regulators; D010940:Plant Proteins; D000040:Abscisic Acid; D002118:Calcium