title: Mutations in a gene for plastid ribosomal protein S6-like protein reveal a novel developmental process required for the correct organization of lateral root meristem in Arabidopsis.
abstract: Arabidopsis rfc3 mutants have previously been isolated with an altered fatty acid composition of membrane lipids. In this study, rfc3 was found to have a sucrose-conditional defect in the patterning of distal elements in the lateral root meristem. By utilizing this feature, a sucrose-sensitive process important for lateral root development was localized to the growing portion of rfc3 primary root. Because lateral root formation occurs at a later stage, this finding suggests the existence of an RFC3-dependent, non-primordium autonomous signal playing a role in the organization of lateral root meristem. Map-based cloning of RFC3 gene revealed that it encodes a plastid-localized ribosomal protein S6-like protein and provides a potential link between control of plastid gene expression and LR development.
authors.affiliation: Department of Biology, Kyushu University, Fukuoka 812-8581, Japan.
authors.forename: Gorou
authors.initials: G
authors.lastname: Horiguchi
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kodama
authors.forename: Koh
authors.initials: K
authors.lastname: Iba
mesh_terms: D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development; D029681:Arabidopsis Proteins / Q000235:genetics* / Q000378:metabolism; D005966:Glucuronidase / Q000235:genetics / Q000378:metabolism; D049452:Green Fluorescent Proteins; D008164:Luminescent Proteins / Q000235:genetics / Q000378:metabolism; D018519:Meristem / Q000235:genetics / Q000254:growth & development*; D008969:Molecular Sequence Data; D009154:Mutation; D018517:Plant Roots / Q000235:genetics / Q000254:growth & development*; D018087:Plastids / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D038601:Ribosomal Protein S6 / Q000235:genetics* / Q000378:metabolism; D012269:Ribosomal Proteins / Q000235:genetics* / Q000378:metabolism; D013395:Sucrose / Q000378:metabolism
chemical_list: D029681:Arabidopsis Proteins; D008164:Luminescent Proteins; C473373:RFC3 protein, Arabidopsis; D011993:Recombinant Fusion Proteins; D038601:Ribosomal Protein S6; D012269:Ribosomal Proteins; D049452:Green Fluorescent Proteins; D013395:Sucrose; D005966:Glucuronidase