title: Hypervariable plastid locus variation and intron evolution in the Anacamptis palustris lineage.
abstract: Data on the organization of a hypervariable chloroplast locus in the Anacamptis palustris (Orchidaceae) lineage are provided and used to infer the pattern of molecular evolution in this group. A large survey of sequence variation in A. palustris and allied taxa reveals several repeat types differing in number and organization that occur in the same plastid region. The resulting repeat type network suggests that at least seven different minisatellite loci evolved near each other in the tRNALEU intron and indicates the presence of at least three main phyletic lines in the A. palustris lineage.
authors.affiliation: Dipartimento di Biologia Vegetale, Università degli Studi di Napoli Federico II, Via Foria, 223, I-80139 Naples, Italy. cozzolin@unina.it
authors.forename: Salvatore
authors.initials: S
authors.lastname: Cozzolino
authors.forename: Donata
authors.initials: D
authors.lastname: Cafasso
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Pellegrino
authors.forename: Aldo
authors.initials: A
authors.lastname: Musacchio
authors.forename: Alex
authors.initials: A
authors.lastname: Widmer
mesh_terms: D001483:Base Sequence; D002965:Classification; D004247:DNA / Q000737:chemistry / Q000378:metabolism; D019143:Evolution, Molecular; D017343:Genes, Plant; D014644:Genetic Variation; D007438:Introns; D018598:Minisatellite Repeats / Q000235:genetics; D008969:Molecular Sequence Data; D029595:Orchidaceae / Q000235:genetics* / Q000378:metabolism; D018087:Plastids / Q000737:chemistry / Q000378:metabolism; D012356:RNA, Transfer, Leu / Q000378:metabolism; D013997:Time Factors
chemical_list: D012356:RNA, Transfer, Leu; D004247:DNA