The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis

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The present review summarizes our classical and molecular cytogenetic investigations in the genus Zea. The results obtained from the meiotic behavior analysis of Zea species and hybrids, confirm the amphiploid nature of all species in the genus, with a basic number of x = 5 chromosomes. All species...

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Autores principales: Poggio, L., Gonzalez, G., Confalonieri, V., Comas, C., Naranjo, C.A.
Formato: JOUR
Materias:
plant DNA
chromosome
cytogenetics
fluorescence in situ hybridization
gene sequence
genomic in situ hybridization
maize
molecular evolution
nonhuman
plant reproduction
priority journal
review
stem cell
zygote
DNA, Plant
Genome, Plant
In Situ Hybridization
In Situ Hybridization, Fluorescence
Zea mays
Tripsacum
Zea perennis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14248581_v109_n1-3_p259_Poggio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_14248581_v109_n1-3_p259_Poggio
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spelling todo:paper_14248581_v109_n1-3_p259_Poggio2023-10-03T16:13:46Z The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis Poggio, L. Gonzalez, G. Confalonieri, V. Comas, C. Naranjo, C.A. plant DNA chromosome cytogenetics fluorescence in situ hybridization gene sequence genomic in situ hybridization maize molecular evolution nonhuman plant reproduction priority journal review stem cell zygote DNA, Plant Genome, Plant In Situ Hybridization In Situ Hybridization, Fluorescence Zea mays Tripsacum Zea mays Zea perennis The present review summarizes our classical and molecular cytogenetic investigations in the genus Zea. The results obtained from the meiotic behavior analysis of Zea species and hybrids, confirm the amphiploid nature of all species in the genus, with a basic number of x = 5 chromosomes. All species with 2n = 20 are diploidized allotetraploids, whereas Z. perennis (2n = 40) is an allooctoploid with four genomes somewhat divergent from one another. These analyses also revealed the existence of postzygotic reproductive isolation among Zea species. Our studies using genomic in situ hybridization (GISH) provide evidence about the evolutionary relationships among maize and its allied species, and reveal remarkable genomic divergences. Particularly, knob sequences were not completely shared between taxa previously considered to be closely related. Our data strongly suggest that the teosinte Z. mays parviglumis is not the only progenitor of cultivated maize. Introgression of Tripsacum into cultivated maize cannot be discarded. Copyright © 2005 S. Karger AG, Basel. Fil:Poggio, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gonzalez, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Confalonieri, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Comas, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Naranjo, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14248581_v109_n1-3_p259_Poggio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic plant DNA
chromosome
cytogenetics
fluorescence in situ hybridization
gene sequence
genomic in situ hybridization
maize
molecular evolution
nonhuman
plant reproduction
priority journal
review
stem cell
zygote
DNA, Plant
Genome, Plant
In Situ Hybridization
In Situ Hybridization, Fluorescence
Zea mays
Tripsacum
Zea mays
Zea perennis
spellingShingle plant DNA
chromosome
cytogenetics
fluorescence in situ hybridization
gene sequence
genomic in situ hybridization
maize
molecular evolution
nonhuman
plant reproduction
priority journal
review
stem cell
zygote
DNA, Plant
Genome, Plant
In Situ Hybridization
In Situ Hybridization, Fluorescence
Zea mays
Tripsacum
Zea mays
Zea perennis
Poggio, L.
Gonzalez, G.
Confalonieri, V.
Comas, C.
Naranjo, C.A.
The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis
topic_facet plant DNA
chromosome
cytogenetics
fluorescence in situ hybridization
gene sequence
genomic in situ hybridization
maize
molecular evolution
nonhuman
plant reproduction
priority journal
review
stem cell
zygote
DNA, Plant
Genome, Plant
In Situ Hybridization
In Situ Hybridization, Fluorescence
Zea mays
Tripsacum
Zea mays
Zea perennis
description The present review summarizes our classical and molecular cytogenetic investigations in the genus Zea. The results obtained from the meiotic behavior analysis of Zea species and hybrids, confirm the amphiploid nature of all species in the genus, with a basic number of x = 5 chromosomes. All species with 2n = 20 are diploidized allotetraploids, whereas Z. perennis (2n = 40) is an allooctoploid with four genomes somewhat divergent from one another. These analyses also revealed the existence of postzygotic reproductive isolation among Zea species. Our studies using genomic in situ hybridization (GISH) provide evidence about the evolutionary relationships among maize and its allied species, and reveal remarkable genomic divergences. Particularly, knob sequences were not completely shared between taxa previously considered to be closely related. Our data strongly suggest that the teosinte Z. mays parviglumis is not the only progenitor of cultivated maize. Introgression of Tripsacum into cultivated maize cannot be discarded. Copyright © 2005 S. Karger AG, Basel.
format JOUR
author Poggio, L.
Gonzalez, G.
Confalonieri, V.
Comas, C.
Naranjo, C.A.
author_facet Poggio, L.
Gonzalez, G.
Confalonieri, V.
Comas, C.
Naranjo, C.A.
author_sort Poggio, L.
title The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis
title_short The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis
title_full The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis
title_fullStr The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis
title_full_unstemmed The genome organization and diversification of maize and its allied species revisited: Evidences from classical and FISH-GISH cytogenetic analysis
title_sort genome organization and diversification of maize and its allied species revisited: evidences from classical and fish-gish cytogenetic analysis
url http://hdl.handle.net/20.500.12110/paper_14248581_v109_n1-3_p259_Poggio
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