Auxin transport - shaping the plant.
Plant growth is marked by its adaptability to continuous changes in environment. A regulated, differential distribution of auxin underlies many adaptation processes including organogenesis, meristem patterning and tropisms. In executing its multiple roles, auxin displays some characteristics of both a hormone and a morphogen. Studies on auxin transport, as well as tracing the intracellular movement of its molecular components, have suggested a possible scenario to explain how growth plasticity is conferred at the cellular and molecular level. The plant perceives stimuli and changes the subcellular position of auxin-transport components accordingly. These changes modulate auxin fluxes, and the newly established auxin distribution triggers the corresponding developmental response.
Friml
Jirí
J
Zentrum für Molekularbiologie der Pflanzen, Universität Tübingen, Auf der Morgenstelle 3, Germany. jiri.friml@zmbp.uni-tuebingen.de
D000222:Adaptation, Physiological / Q000502:physiology; D017360:Arabidopsis / Q000254:growth & development / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000378:metabolism; D001692:Biological Transport / Q000502:physiology; D007150:Immunohistochemistry; D007210:Indoleacetic Acids / Q000378:metabolism*; D018519:Meristem / Q000166:cytology / Q000502:physiology; D009024:Morphogenesis / Q000502:physiology; D063245:Plant Development; D010937:Plant Growth Regulators / Q000378:metabolism; D010944:Plants / Q000378:metabolism; D021381:Protein Transport / Q000502:physiology; D015398:Signal Transduction / Q000502:physiology; D018523:Tropism / Q000502:physiology
D029681:Arabidopsis Proteins; D007210:Indoleacetic Acids; C449300:PIN3 protein, Arabidopsis; D010937:Plant Growth Regulators