Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex

Turnera sidoides is an autopolyploid complex of obligate outcrossing perennial herbs. It includes five subspecies and five morphotypes in which diploid to octoploid cytotypes were found. Based on phenetic analyses of the complex and karyotype data of polyploid cytotypes, it has been hypothesized tha...

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Autores principales:	Roggero Luque, Juan Manuel, Moreno, Ercilia María Sara, Kovalsky, Ivana Evelín, Seijo, José Guillermo, Solís Neffa, Viviana Griselda
Formato:	Artículo
Lenguaje:	Inglés
Publicado:	Natl research council Canada-n R C research press 2021
Materias:	Diploid Chromosome differentiation Turnera sidoides
Acceso en línea:	http://repositorio.unne.edu.ar/handle/123456789/30299
Aporte de:	RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste

id	I48-R184-123456789-30299
record_format	dspace
institution	Universidad Nacional del Nordeste
institution_str	I-48
repository_str	R-184
collection	RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language	Inglés
topic	Diploid Chromosome differentiation Turnera sidoides
spellingShingle	Diploid Chromosome differentiation Turnera sidoides Roggero Luque, Juan Manuel Moreno, Ercilia María Sara Kovalsky, Ivana Evelín Seijo, José Guillermo Solís Neffa, Viviana Griselda Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
topic_facet	Diploid Chromosome differentiation Turnera sidoides
description	Turnera sidoides is an autopolyploid complex of obligate outcrossing perennial herbs. It includes five subspecies and five morphotypes in which diploid to octoploid cytotypes were found. Based on phenetic analyses of the complex and karyotype data of polyploid cytotypes, it has been hypothesized that morphological and chromosome differentiation of T. sidoides occurred at the diploid level. To test this hypothesis, we present the first detailed chromosome analysis of diploid populations of three subspecies and four morphotypes. CMA+/DAPI− bands were restricted to secondary constrictions (except in the andino morphotype) and varied in number and position among taxa. By contrast, DAPI staining was uniform in all the materials investigated. The number and position of 45S rDNA loci were coincident with the CMA+/DAPI− bands associated with secondary constrictions. Only one pair of 5S rDNA loci was detected in all the taxa (except in subsp. holosericea), but its position was variable. The identified chromosome markers varied among the three subspecies analyzed, but they were more conserved among the morphotypes of subsp. pinnatifida. Cluster analysis of these chromosome markers supports the current taxonomic arrangement of diploids and demonstrates that structural chromosome changes would have led or accompanied the initial differentiation of T. sidoides at the diploid level.
format	Artículo
author	Roggero Luque, Juan Manuel Moreno, Ercilia María Sara Kovalsky, Ivana Evelín Seijo, José Guillermo Solís Neffa, Viviana Griselda
author_facet	Roggero Luque, Juan Manuel Moreno, Ercilia María Sara Kovalsky, Ivana Evelín Seijo, José Guillermo Solís Neffa, Viviana Griselda
author_sort	Roggero Luque, Juan Manuel
title	Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
title_short	Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
title_full	Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
title_fullStr	Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
title_full_unstemmed	Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
title_sort	evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
publisher	Natl research council Canada-n R C research press
publishDate	2021
url	http://repositorio.unne.edu.ar/handle/123456789/30299
work_keys_str_mv	AT roggeroluquejuanmanuel evidenceoftheoccurrenceofstructuralchromosomechangesattheinitialdiploiddiversificationoftheautopolyploidturnerasidoideslpassifloraceaecomplex AT morenoerciliamariasara evidenceoftheoccurrenceofstructuralchromosomechangesattheinitialdiploiddiversificationoftheautopolyploidturnerasidoideslpassifloraceaecomplex AT kovalskyivanaevelin evidenceoftheoccurrenceofstructuralchromosomechangesattheinitialdiploiddiversificationoftheautopolyploidturnerasidoideslpassifloraceaecomplex AT seijojoseguillermo evidenceoftheoccurrenceofstructuralchromosomechangesattheinitialdiploiddiversificationoftheautopolyploidturnerasidoideslpassifloraceaecomplex AT solisneffavivianagriselda evidenceoftheoccurrenceofstructuralchromosomechangesattheinitialdiploiddiversificationoftheautopolyploidturnerasidoideslpassifloraceaecomplex
bdutipo_str	Repositorios
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Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex

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