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Chromosome and genome size variation in Luzula (Juncaceae), a genus with holocentric chromosomes
chromosomal evolution
chromosome numbers
chromosome size
endopolyploidy
holokinetic chromosomes
karyotype evolution
molecular phylogeny
polyploidy
The present study examines chromosome and genome size evolution in Luzula (woodrush; Juncaceae), a monocot genus with holocentric chromosomes. Detailed karyotypes and genome size estimates were obtained for seven Luzula spp., and these were combined with additional data from the literature to enable a comprehensive cytological analysis of the genus. So that the direction of karyotype and genome size changes could be determined, the cytological data were superimposed onto a phylogenetic tree based on the trnL-F and internal transcribed spacer (ITS) DNA regions. Overall, Luzula shows considerable cytological variation both in terms of chromosome number (2n = 6–66) and genome size (15-fold variation; 2C = 0.56–8.51 pg; 547.7–8322.8 Mb). In addition, there is considerable diversity in the genomic mechanisms responsible, with the range of karyotypes arising via agmatoploidy (chromosome fission), symploidy (chromosome fusion) and/or polyploidy accompanied, in some cases, by the amplification or elimination of DNA. Viewed in an evolutionary framework, no broad trend in karyotype or genome evolution was apparent across the genus; instead, different mechanisms of karyotype evolution appear to be operating in different clades. It is clear that Luzula exhibits considerable genomic flexibility and tolerance to large, genome-scale changes.
cris.lastimport.scopus | 2024-04-07T14:11:37Z | |
dc.abstract.en | The present study examines chromosome and genome size evolution in Luzula (woodrush; Juncaceae), a monocot genus with holocentric chromosomes. Detailed karyotypes and genome size estimates were obtained for seven Luzula spp., and these were combined with additional data from the literature to enable a comprehensive cytological analysis of the genus. So that the direction of karyotype and genome size changes could be determined, the cytological data were superimposed onto a phylogenetic tree based on the trnL-F and internal transcribed spacer (ITS) DNA regions. Overall, Luzula shows considerable cytological variation both in terms of chromosome number (2n = 6–66) and genome size (15-fold variation; 2C = 0.56–8.51 pg; 547.7–8322.8 Mb). In addition, there is considerable diversity in the genomic mechanisms responsible, with the range of karyotypes arising via agmatoploidy (chromosome fission), symploidy (chromosome fusion) and/or polyploidy accompanied, in some cases, by the amplification or elimination of DNA. Viewed in an evolutionary framework, no broad trend in karyotype or genome evolution was apparent across the genus; instead, different mechanisms of karyotype evolution appear to be operating in different clades. It is clear that Luzula exhibits considerable genomic flexibility and tolerance to large, genome-scale changes. | pl |
dc.affiliation | Wydział Biologii i Nauk o Ziemi : Instytut Botaniki | pl |
dc.contributor.author | Bożek, Monika - 145331 | pl |
dc.contributor.author | Leitch, Andrew R. | pl |
dc.contributor.author | Leitch, Ilia J. | pl |
dc.contributor.author | Záveská Drábková, Lenka | pl |
dc.contributor.author | Kuta, Elżbieta - 129801 | pl |
dc.date.accessioned | 2016-03-08T11:58:49Z | |
dc.date.available | 2016-03-08T11:58:49Z | |
dc.date.issued | 2012 | pl |
dc.date.openaccess | 36 | |
dc.description.accesstime | po opublikowaniu | |
dc.description.number | 4 | pl |
dc.description.physical | 529-541 | pl |
dc.description.version | ostateczna wersja wydawcy | |
dc.description.volume | 170 | pl |
dc.identifier.doi | 10.1111/j.1095-8339.2012.01314.x | pl |
dc.identifier.eissn | 1095-8339 | pl |
dc.identifier.issn | 0024-4074 | pl |
dc.identifier.uri | http://ruj.uj.edu.pl/xmlui/handle/item/21960 | |
dc.language | eng | pl |
dc.language.container | eng | pl |
dc.rights | Dodaję tylko opis bibliograficzny | * |
dc.rights.licence | OTHER | |
dc.rights.uri | * | |
dc.share.type | otwarte czasopismo | |
dc.subject.en | chromosomal evolution | pl |
dc.subject.en | chromosome numbers | pl |
dc.subject.en | chromosome size | pl |
dc.subject.en | endopolyploidy | pl |
dc.subject.en | holokinetic chromosomes | pl |
dc.subject.en | karyotype evolution | pl |
dc.subject.en | molecular phylogeny | pl |
dc.subject.en | polyploidy | pl |
dc.subtype | Article | pl |
dc.title | Chromosome and genome size variation in Luzula (Juncaceae), a genus with holocentric chromosomes | pl |
dc.title.journal | Botanical Journal of the Linnean Society | pl |
dc.type | JournalArticle | pl |
dspace.entity.type | Publication |