Karyotypes, heterochromatin, and physical mapping of 18S-26S rDNA in Cactaceae

dc.creatorPenas, MLL
dc.creatorUrdampilleta, JD
dc.creatorBernardello, G
dc.creatorForni-Martins, ER
dc.date2009
dc.date2014-11-16T09:05:53Z
dc.date2015-11-26T17:24:15Z
dc.date2014-11-16T09:05:53Z
dc.date2015-11-26T17:24:15Z
dc.date.accessioned2018-03-29T00:11:33Z
dc.date.available2018-03-29T00:11:33Z
dc.identifierCytogenetic And Genome Research. Karger, v. 124, n. 1, n. 72, n. 80, 2009.
dc.identifier1424-8581
dc.identifier1424-859X
dc.identifierWOS:000265563700009
dc.identifier10.1159/000200090
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/60933
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/60933
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/60933
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1284034
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionKaryotype analyses in members of the four Cactaceae subfamilies were performed. Numbers and karyotype formula obtained were: Pereskioideae = Pereskia aculeata (2n = 22; 10 m + 1 sm), Maihuenioideae = Maihuenia patagonica (2n = 22, 9 m + 2 sm; 2n = 44, 18 m + 4 sm), Opuntioideae = Cumulopuntia recurvata (2n = 44; 20 m + 2 sm), Cactoideae = Acanthocalycium spiniflorum (2n = 22; 10 m + 1 sm), Echinopsis tubiflora (2n = 22; 10 m + 1 sm), Trichocereus candicans (2n = 22, 22 m). Chromosomes were small, the average chromosome length was 2.3 mu m. Diploid species and the tetraploid C. recurvata had one terminal satellite, whereas the remaining tetraploid species showed four satellited chromosomes. Karyotypes were symmetrical. No CMA(-)/DAPI(+) bands were detected, but CMA(+)/DAPI(-) bands associated with NOR were always found. Pericentromeric heterochromatin was found in C. recurvata, A. spiniflorum, and the tetraploid cytotype of M. patagonica. The locations of the 18S-26S rDNA sites in all species coincided with CMA(+)/DAPI(-) bands; the same occurred with the sizes and numbers of signals for each species. This technique was applied for the first time in metaphase chromosomes in cacti. NOR-bearing pair no.1 may be homeologous in all species examined. In Cactaceae, the 18S-26S loci seem to be highly conserved. Copyright (C) 2009 S. Karger AG, Basel
dc.description124
dc.description1
dc.description72
dc.description80
dc.description'Consejo Nacional de Investigaciones Cientificas y Tecnicas' (CONICET, Argentina)
dc.descriptionFONCYT
dc.description'Universidad Nacional de Cordoba' (SECyT, Argentina)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherKarger
dc.publisherBasel
dc.publisherSuíça
dc.relationCytogenetic And Genome Research
dc.relationCytogenet. Genome Res.
dc.rightsfechado
dc.rightshttp://www.karger.com/Services/RightsPermissions
dc.sourceWeb of Science
dc.subjectIn-situ Hybridization
dc.subjectGenus Echinocereus Cactaceae
dc.subjectNucleolus Organizing Regions
dc.subjectWestern North-america
dc.subjectNuclear Ribosomal Dna
dc.subjectChromosome-numbers
dc.subject45s Rdna
dc.subjectGenetic-relationships
dc.subjectInsitu Hybridization
dc.subjectCapsicum Solanaceae
dc.titleKaryotypes, heterochromatin, and physical mapping of 18S-26S rDNA in Cactaceae
dc.typeArtículos de revistas


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