title: Involvement of secondary messengers and small organic molecules in auxin perception and signaling.
abstract: Auxin is a major phytohormone involved in most aspects of plant growth and development. Generally, auxin is perceived by three distinct receptors: TRANSPORT INHIBITOR RESISTANT1-Auxin/INDOLE ACETIC ACID, S-Phase Kinase-Associated Protein 2A and AUXIN-BINDING PROTEIN1. The auxin perception is regulated by a variety of secondary messenger molecules, including nitric oxide, reactive oxygen species, calcium, cyclic GMP, cyclic AMP, inositol triphosphate, diacylglycerol and by physiological pH. In addition, some small organic molecules, including inositol hexakisphosphate, yokonolide B, p-chlorophenoxyisobutyric acid, toyocamycin and terfestatin A, are involved in auxin signaling. In this review, we summarize and discuss the recent progress in understanding the functions of these secondary messengers and small organic molecules, which are now thoroughly demonstrated to be pervasive and important in auxin perception and signal transduction.
authors.affiliation: Institute of Cell Biology, School of Life Sciences, Lanzhou University, Lanzhou, 73000, China, didw12@lzu.edu.cn.
authors.forename: Dong-Wei
authors.initials: DW
authors.lastname: Di
authors.forename: Caiguo
authors.initials: C
authors.lastname: Zhang
authors.forename: Guang-Qin
authors.initials: GQ
authors.lastname: Guo
mesh_terms: D029681:Arabidopsis Proteins / Q000378:metabolism; D002118:Calcium / Q000378:metabolism; D004075:Diglycerides / Q000378:metabolism; D050684:E2F Transcription Factors / Q000378:metabolism; D044783:F-Box Proteins / Q000378:metabolism; D007210:Indoleacetic Acids / Q000378:metabolism*; D009569:Nitric Oxide / Q000378:metabolism; D010937:Plant Growth Regulators / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism*; D010944:Plants / Q000378:metabolism*; D017382:Reactive Oxygen Species / Q000378:metabolism; D011956:Receptors, Cell Surface / Q000378:metabolism; D015398:Signal Transduction
chemical_list: D029681:Arabidopsis Proteins; D004075:Diglycerides; D050684:E2F Transcription Factors; C514752:E2FC protein, Arabidopsis; D044783:F-Box Proteins; D007210:Indoleacetic Acids; D010937:Plant Growth Regulators; D010940:Plant Proteins; D017382:Reactive Oxygen Species; D011956:Receptors, Cell Surface; C528951:SKP2A protein, Arabidopsis; C083846:auxin-binding protein 1; D009569:Nitric Oxide; D002118:Calcium