Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)

Grindelia is a genus with a complex evolutionary history with reticulate evolution. We studied the karyotype, fluorescent banding, and fluorescence in situ hybridization (FISH) using 18–5.8–26 S and 5 S ribosomal DNA probes to survey karyotypic diversity of South American Grindelia species. Chromoso...

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Detalles Bibliográficos
Autores principales:	Moreno, N.C., Stiefkens, L., Las Peñas, M.L., Bartoli, A., Tortosa, R., Bernardello, G.
Formato:	INPR
Materias:	Grindelia heterochromatin karyotype polyploidy ribosomal genes
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_11263504_v_n_p1_Moreno
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_11263504_v_n_p1_Moreno
record_format	dspace
spelling	todo:paper_11263504_v_n_p1_Moreno2023-10-03T16:06:41Z Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae) Moreno, N.C. Stiefkens, L. Las Peñas, M.L. Bartoli, A. Tortosa, R. Bernardello, G. Grindelia heterochromatin karyotype polyploidy ribosomal genes Grindelia is a genus with a complex evolutionary history with reticulate evolution. We studied the karyotype, fluorescent banding, and fluorescence in situ hybridization (FISH) using 18–5.8–26 S and 5 S ribosomal DNA probes to survey karyotypic diversity of South American Grindelia species. Chromosome basic numbers were x = 6 (with several ploidy levels: 2x, 4x, and 6x). All the Grindelia studied conserved the patterns of CG-rich heterochromatin and 18-5.8-26 S rDNA. The third m sat-chromosome pair was homeologous in Grindelia. Chromosome variation, although not always large, accompanied the evolutionary divergence of the taxa studied. The Grindelia studied formed two species groups: (1) G. globularifolia and G. pulchella var. pulchella, (2) G. buphthalmoides, G. cabrerae var. alatocarpa and var. cabrerae, G. chiloensis, G. orientalis, and G. prostrata. These groups do not show any morphological affinities and their phylogenetic relationships are not clearly resolved, suggesting that these groups have recently diverged. © 2016 Società Botanica Italiana INPR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11263504_v_n_p1_Moreno
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Grindelia heterochromatin karyotype polyploidy ribosomal genes
spellingShingle	Grindelia heterochromatin karyotype polyploidy ribosomal genes Moreno, N.C. Stiefkens, L. Las Peñas, M.L. Bartoli, A. Tortosa, R. Bernardello, G. Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)
topic_facet	Grindelia heterochromatin karyotype polyploidy ribosomal genes
description	Grindelia is a genus with a complex evolutionary history with reticulate evolution. We studied the karyotype, fluorescent banding, and fluorescence in situ hybridization (FISH) using 18–5.8–26 S and 5 S ribosomal DNA probes to survey karyotypic diversity of South American Grindelia species. Chromosome basic numbers were x = 6 (with several ploidy levels: 2x, 4x, and 6x). All the Grindelia studied conserved the patterns of CG-rich heterochromatin and 18-5.8-26 S rDNA. The third m sat-chromosome pair was homeologous in Grindelia. Chromosome variation, although not always large, accompanied the evolutionary divergence of the taxa studied. The Grindelia studied formed two species groups: (1) G. globularifolia and G. pulchella var. pulchella, (2) G. buphthalmoides, G. cabrerae var. alatocarpa and var. cabrerae, G. chiloensis, G. orientalis, and G. prostrata. These groups do not show any morphological affinities and their phylogenetic relationships are not clearly resolved, suggesting that these groups have recently diverged. © 2016 Società Botanica Italiana
format	INPR
author	Moreno, N.C. Stiefkens, L. Las Peñas, M.L. Bartoli, A. Tortosa, R. Bernardello, G.
author_facet	Moreno, N.C. Stiefkens, L. Las Peñas, M.L. Bartoli, A. Tortosa, R. Bernardello, G.
author_sort	Moreno, N.C.
title	Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)
title_short	Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)
title_full	Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)
title_fullStr	Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)
title_full_unstemmed	Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)
title_sort	karyotypes, heterochromatin distribution and rdna patterns in south american grindelia (asteraceae)
url	http://hdl.handle.net/20.500.12110/paper_11263504_v_n_p1_Moreno
work_keys_str_mv	AT morenonc karyotypesheterochromatindistributionandrdnapatternsinsouthamericangrindeliaasteraceae AT stiefkensl karyotypesheterochromatindistributionandrdnapatternsinsouthamericangrindeliaasteraceae AT laspenasml karyotypesheterochromatindistributionandrdnapatternsinsouthamericangrindeliaasteraceae AT bartolia karyotypesheterochromatindistributionandrdnapatternsinsouthamericangrindeliaasteraceae AT tortosar karyotypesheterochromatindistributionandrdnapatternsinsouthamericangrindeliaasteraceae AT bernardellog karyotypesheterochromatindistributionandrdnapatternsinsouthamericangrindeliaasteraceae
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Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae)

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