title: Penium margaritaceum as a model organism for cell wall analysis of expanding plant cells.
abstract: The growth of a plant cell encompasses a complex set of subcellular components interacting in a highly coordinated fashion. Ultimately, these activities create specific cell wall structural domains that regulate the prime force of expansion, internally generated turgor pressure. The precise organization of the polymeric networks of the cell wall around the protoplast also contributes to the direction of growth, the shape of the cell, and the proper positioning of the cell in a tissue. In essence, plant cell expansion represents the foundation of development. Most studies of plant cell expansion have focused primarily upon late divergent multicellular land plants and specialized cell types (e.g., pollen tubes, root hairs). Here, we describe a unicellular green alga, Penium margaritaceum (Penium), which can serve as a valuable model organism for understanding cell expansion and the underlying mechanics of the cell wall in a single plant cell.
authors.affiliation: Department of Plant and Environmental Sciences, Faculty ofScience, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Copenhagen, Denmark.
authors.forename: Maja G
authors.initials: MG
authors.lastname: Rydahl
authors.forename: Jonatan U
authors.initials: JU
authors.lastname: Fangel
authors.forename: Maria Dalgaard
authors.initials: MD
authors.lastname: Mikkelsen
authors.forename: I Elisabeth
authors.initials: IE
authors.lastname: Johansen
authors.forename: Amanda
authors.initials: A
authors.lastname: Andreas
authors.forename: Jesper
authors.initials: J
authors.lastname: Harholt
authors.forename: Peter
authors.initials: P
authors.lastname: Ulvskov
authors.forename: Bodil
authors.initials: B
authors.lastname: Jørgensen
authors.forename: David S
authors.initials: DS
authors.lastname: Domozych
authors.forename: William G T
authors.initials: WG
authors.lastname: Willats
mesh_terms: D018929:Cell Culture Techniques; D002473:Cell Wall / Q000378:metabolism* / Q000648:ultrastructure; D000460:Chlorophyta / Q000033:anatomy & histology / Q000166:cytology* / Q000254:growth & development / Q000378:metabolism; D046529:Microscopy, Electron, Transmission; D008954:Models, Biological; D059828:Plant Cells / Q000378:metabolism / Q000648:ultrastructure*; D011523:Protoplasts