Physical Mapping Of 35s Rrna Genes And Genome Size Variation In Polyploid Series Of Sisyrinchium Micranthum And S-rosulatum (iridaceae: Iridoideae)

dc.creatorTacuatia
dc.creatorL. O.; Kaltchuk-Santos
dc.creatorE.; Souza-Chies
dc.creatorT. T.; Eggers
dc.creatorL.; Forni-Martins
dc.creatorE. R.; Pustahija
dc.creatorF.; Robin
dc.creatorO.; Siljak-Yakovlev
dc.creatorS.
dc.date2017
dc.datejun
dc.date2017-11-13T13:15:19Z
dc.date2017-11-13T13:15:19Z
dc.date.accessioned2018-03-29T05:52:53Z
dc.date.available2018-03-29T05:52:53Z
dc.identifierPlant Biosystems. Taylor & Francis Ltd, v. 151, p. 403 - 413, 2017.
dc.identifier1126-3504
dc.identifier1724-5575
dc.identifierWOS:000399481200005
dc.identifier10.1080/11263504.2016.1179691
dc.identifierhttp://www.tandfonline.com/doi/abs/10.1080/11263504.2016.1179691?journalCode=tplb20
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/327335
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1364360
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionSisyrinchium micranthum and S. rosulatum are part of a species complex in which S. micranthum displays considerable morphological variation. S. rosulatum is a tetraploid species, whereas S. micranthum plants may present three different ploidy levels (2x, 4x, and 6x), so that polyploidy might have an important role in the diversification of this group. Notwithstanding, most cytogenetic studies on these species are based on chromosome counting. Aiming to understand how polyploidy may have impacted the genomes of these species, the DNA content of 184 specimens was estimated; fluorochrome banding with chromomycin A(3) and fluorescent in situ hybridization using an 18S-5.8S-26S ribosomal DNA (rDNA) probe were also performed. The results showed a reduction in monoploid genome size (1Cx), as well as in the number of heterochromatin bands and rDNA sites per monoploid genome, from diploids to polyploids. Additionally, intraspecific and within-ploidy variations in genome size and number of rDNA sites were observed. The source of varying structure in genome organization of these plants may be the multiple independent formations of polyploids along with an ongoing diploidization process. However, the intraspecific and within-ploidy polymorphisms indicate genetic mechanisms other than genome duplication and diploidization to be important to the genome evolution of these taxa.
dc.description151
dc.description3
dc.description403
dc.description413
dc.descriptionConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [477533/2009-4]
dc.descriptionCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior
dc.descriptionComite Francais d'Evaluation de La Cooperation Universitaire avec le Bresil (CAPES-COFECUB) [550/07]
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageEnglish
dc.publisherTaylor & Francis Ltd
dc.publisherAbingdon
dc.relationPlant Biosystems
dc.rightsfechado
dc.sourceWOS
dc.subjectFish
dc.subjectFluorochrome Banding
dc.subjectMonoploid Genome Size
dc.subjectNuclear Dna Content
dc.subjectPolyploidy
dc.subjectRdna
dc.titlePhysical Mapping Of 35s Rrna Genes And Genome Size Variation In Polyploid Series Of Sisyrinchium Micranthum And S-rosulatum (iridaceae: Iridoideae)
dc.typeArtículos de revistas


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