title: Plant phosphoinositides-complex networks controlling growth and adaptation.
abstract: Plants differ in many ways from mammals or yeast. However, plants employ phosphoinositides for the regulation of essential cellular functions as do all other eukaryotes. In recent years the plant phosphoinositide system has been linked to the control of cell polarity. Phosphoinositides are also implicated in plant adaptive responses to changing environmental conditions. The current understanding is that plant phosphoinositides control membrane trafficking, ion channels and the cytoskeleton in similar ways as in other eukaryotic systems, but adapted to meet plant cellular requirements and with some plant-specific features. In addition, the formation of soluble inositol polyphosphates from phosphoinositides is important for the perception of important phytohormones, as the relevant receptor proteins contain such molecules as structural cofactors. Overall, the essential nature of phosphoinositides in plants has been established. Still, the complexity of the phosphoinositide networks in plant cells is only emerging and invites further study of its molecular details. This article is part of a special issue entitled Phosphoinositides.
authors.affiliation: Department of Cellular Biochemistry, Institute for Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, 06120 Halle (Saale), Germany.
authors.forename: Mareike
authors.initials: M
authors.lastname: Heilmann
authors.affiliation: Department of Cellular Biochemistry, Institute for Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, 06120 Halle (Saale), Germany. Electronic address: ingo.heilmann@biochemtech.uni-halle.de.
authors.forename: Ingo
authors.initials: I
authors.lastname: Heilmann
mesh_terms: D000222:Adaptation, Physiological; D001692:Biological Transport; D016764:Cell Polarity; D003599:Cytoskeleton / Q000378:metabolism / Q000648:ultrastructure; D053263:Gene Regulatory Networks; D007473:Ion Channels / Q000235:genetics / Q000378:metabolism; D010716:Phosphatidylinositols / Q000378:metabolism*; D049294:Phospholipid Transfer Proteins / Q000235:genetics / Q000378:metabolism*; D017853:Phosphotransferases (Alcohol Group Acceptor) / Q000235:genetics / Q000378:metabolism*; D059828:Plant Cells / Q000378:metabolism*; D063245:Plant Development; D010937:Plant Growth Regulators / Q000378:metabolism; D015398:Signal Transduction; D010738:Type C Phospholipases / Q000235:genetics / Q000378:metabolism*
chemical_list: D007473:Ion Channels; D010716:Phosphatidylinositols; D049294:Phospholipid Transfer Proteins; D010937:Plant Growth Regulators; D017853:Phosphotransferases (Alcohol Group Acceptor); D010738:Type C Phospholipases
keywords: Cell polarity; Cytoskeleton; Membrane trafficking; Phytohormones; Regulatory lipids; Stress adaptation