title: A NOR-associated repetitive element present in the genome of two Salmo species (Salmo salar and Salmo trutta).
abstract: A repetitive element was isolated from the genome of Atlantic salmon. Nucleotide sequence analysis revealed the existence of variant monomers that range in length from approximately 200 to 230 bp. Repeat monomers contain regions of cryptic simplicity, internal repetition, and long direct repeats with deletions and insertions between individual units. The repetitive element was shown to have a tandem unit arrangement and was estimated to occupy between two and three percent of the Atlantic salmon genome. Southern blot analysis revealed the repetitive element to be unique to Atlantic salmon and brown trout species. In situ hybridization analysis showed this element to be localized at the main nucleolar organizer region bearing chromosomes of Atlantic salmon (Salmo salar), AS cell line (derived from S. salar), and brown trout (Salmo trutta).
authors.affiliation: Departamento de Biología Fundamental, Universidad de Santiago de Compostela, Lugo, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Abuín
authors.forename: C
authors.initials: C
authors.lastname: Clabby
authors.forename: P
authors.initials: P
authors.lastname: Martínez
authors.forename: U
authors.initials: U
authors.lastname: Goswami
authors.forename: F
authors.initials: F
authors.lastname: Flavin
authors.forename: N P
authors.initials: NP
authors.lastname: Wilkins
authors.forename: J A
authors.initials: JA
authors.lastname: Houghton
authors.forename: R
authors.initials: R
authors.lastname: Powell
authors.forename: L
authors.initials: L
authors.lastname: Sánchez
mesh_terms: D000818:Animals; D001483:Base Sequence; D015139:Blotting, Southern; D002460:Cell Line; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D017124:Conserved Sequence; D005399:Fishes / Q000235:genetics; D017404:In Situ Hybridization, Fluorescence; D008969:Molecular Sequence Data; D009697:Nucleolus Organizer Region / Q000235:genetics*; D012091:Repetitive Sequences, Nucleic Acid; D012474:Salmon / Q000235:genetics*; D017422:Sequence Analysis, DNA; D014337:Trout / Q000235:genetics*