Artículo
Abstract:
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
Registro:
| Documento: | Artículo |
| Título: | Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae) |
| Autor: | Moreno, N.C.; Stiefkens, L.; Las Peñas, M.L.; Bartoli, A.; Tortosa, R.; Bernardello, G. |
| Filiación: | Instituto Multidisciplinario de Biología Vegetal, CONICET-UNC, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina Facultad de Ciencias Exactas, Físicas y Naturales, UNC, Argentina Facultad de Agronomía, UBA, Argentina |
| Palabras clave: | Grindelia; heterochromatin; karyotype; polyploidy; ribosomal genes |
| Año: | 2016 |
| Página de inicio: | 1 |
| Página de fin: | 9 |
| DOI: | http://dx.doi.org/10.1080/11263504.2016.1265611 |
| Título revista: | Plant Biosystems |
| Título revista abreviado: | Plant Biosyst. |
| ISSN: | 11263504 |
| CODEN: | GBOIA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11263504_v_n_p1_Moreno |
Citas:
---------- APA ----------
Moreno, N.C., Stiefkens, L., Las Peñas, M.L., Bartoli, A., Tortosa, R. & Bernardello, G. (2016) . Karyotypes, heterochromatin distribution and rDNA patterns in South American Grindelia (Asteraceae). Plant Biosystems, 1-9.http://dx.doi.org/10.1080/11263504.2016.1265611
---------- CHICAGO ----------
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)" . Plant Biosystems (2016) : 1-9.http://dx.doi.org/10.1080/11263504.2016.1265611
---------- MLA ----------
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)" . Plant Biosystems, 2016, pp. 1-9.http://dx.doi.org/10.1080/11263504.2016.1265611
---------- VANCOUVER ----------
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). Plant Biosyst. 2016:1-9.http://dx.doi.org/10.1080/11263504.2016.1265611
