title: Characterization of a highly repeated DNA sequence family in five species of the genus Eulemur.
abstract: The karyotypes of Eulemur species exhibit a high degree of variation, as a consequence of the Robertsonian fusion and/or centromere fission. Centromeric and pericentromeric heterochromatin of eulemurs is constituted by highly repeated DNA sequences (including some telomeric TTAGGG repeats) which have so far been investigated and used for the study of the systematic relationships of the different species of the genus Eulemur. In our study, we have cloned a set of repetitive pericentromeric sequences of five Eulemur species: E. fulvus fulvus (EFU), E. mongoz (EMO), E. macaco (EMA), E. rubriventer (ERU), and E. coronatus (ECO). We have characterized these clones by sequence comparison and by comparative fluorescence in situ hybridization analysis in EMA and EFU. Our results showed a high degree of sequence similarity among Eulemur species, indicating a strong conservation, within the five species, of these pericentromeric highly repeated DNA sequences.
authors.affiliation: Dipartimento di Biologia, Università di Bari, Via Amendola 165/a, 70126 Bari, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Ventura
authors.forename: M
authors.initials: M
authors.lastname: Boniotto
authors.forename: M F
authors.initials: MF
authors.lastname: Cardone
authors.forename: L
authors.initials: L
authors.lastname: Fulizio
authors.forename: N
authors.initials: N
authors.lastname: Archidiacono
authors.forename: M
authors.initials: M
authors.lastname: Rocchi
authors.forename: S
authors.initials: S
authors.lastname: Crovella
mesh_terms: D000818:Animals; D001483:Base Sequence; D015139:Blotting, Southern; D002478:Cells, Cultured; D004247:DNA / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D015245:Deoxyribonuclease BamHI / Q000378:metabolism; D017404:In Situ Hybridization, Fluorescence; D007900:Lemur / Q000235:genetics*; D008969:Molecular Sequence Data; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics*; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D013045:Species Specificity
chemical_list: D004247:DNA; D015245:Deoxyribonuclease BamHI