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dc.contributor.author
Chiarini, Franco Ezequiel
dc.contributor.author
Moreno, Natalia Cecilia
dc.contributor.author
More, Marcela
dc.contributor.author
Barboza, Gloria Estela
dc.date.available
2017-09-14T19:47:35Z
dc.date.issued
2016-09
dc.identifier.citation
Chiarini, Franco Ezequiel; Moreno, Natalia Cecilia; More, Marcela; Barboza, Gloria Estela; Chromosomal changes and recent diversification in the Andean genus Jaborosa (Solanaceae); Oxford University Press; Botanical Journal of The Linnean Society; 183; 1; 9-2016; 57-74
dc.identifier.issn
0024-4074
dc.identifier.uri
http://hdl.handle.net/11336/24293
dc.description.abstract
With the purpose of discussing the evolutionary dynamics of the karyotypes and their relationship with key geological events, CMA/DAPI banding and FISH techniques were applied to metaphase chromosomes of 13 Jaborosa species plus Sclerophylax spinescens, and the resulting characters were reconstructed onto a dated phylogenetic tree. Jaborosa presents a distinctive evolutionary pathway at the chromosomal level in respect to its sister clades, the Hyoscyameae, Lycium and Sclerophylax. The divergence of the common ancestor of Jaborosa involved an increase in chromosome size, with a slight rise in the amount of heterochromatin and chromosomal asymmetry, all these changes taking place at the diploid level. Variation in the number and position of rDNA sites showed profuse chromosomal rearrangements, such as duplications and transpositions. Contrasting evolution of the 5S and 18-5.8-26S rDNA seems to have occurred, with the 5S site being more stable than the 18-5.8-26S. The diversification of Jaborosa seems to be correlated with the most recent uplifts in the Andes in central South America and the establishment of the Patagonian steppe: the genus colonized these biomes and at the same time underwent a remarkable chromosomal and morphological differentiation. Although some characters were seen to be homoplastic, the combination of chromosome markers employed here allowed species discrimination.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Andes
dc.subject
Jaborosa
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Fluorescence in Situ Hybridization
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Heterochromatin
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Karyotype
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Phylogeny
dc.subject.classification
Bioquímica y Biología Molecular
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Chromosomal changes and recent diversification in the Andean genus Jaborosa (Solanaceae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-01T17:59:17Z
dc.identifier.eissn
1095-8339
dc.journal.volume
183
dc.journal.number
1
dc.journal.pagination
57-74
dc.journal.pais
Reino Unido
dc.journal.ciudad
Oxford
dc.description.fil
Fil: Chiarini, Franco Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
dc.description.fil
Fil: Moreno, Natalia Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
dc.description.fil
Fil: More, Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
dc.description.fil
Fil: Barboza, Gloria Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
dc.journal.title
Botanical Journal of The Linnean Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/boj.12493
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/botlinnean/article-abstract/183/1/57/2857477/Chromosomal-changes-and-recent-diversification-in


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