Meiotic behavior and DNA content in alloplasmic lines of maize

The cytoplasm of Zea mays ssp. mexicana (teosinte) affects several inherited traits when combined with genotypes of maize (Zea mays ssp. mays). The meiotic behavior and the total DNA content of four lines of maize with teosinte cytoplasm were compared with those of the parental lines. The results ob...

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Autores principales:	Poggio, L., Rosato, M., Naranjo, C.A.
Formato:	JOUR
Materias:	Alloplasmy DNA content Maize Meiotic behavior Nuclear-cytoplasmic interaction Teosinte Zea mays ssp. mexicana anaphase DNA analysis genome maize meiosis plant breeding plant genetics plant genome prophase Zea mays
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_08312796_v40_n5_p723_Poggio
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_08312796_v40_n5_p723_Poggio
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spelling	todo:paper_08312796_v40_n5_p723_Poggio2023-10-03T15:40:13Z Meiotic behavior and DNA content in alloplasmic lines of maize Poggio, L. Rosato, M. Naranjo, C.A. Alloplasmy DNA content Maize Meiotic behavior Nuclear-cytoplasmic interaction Teosinte Zea mays ssp. mexicana anaphase DNA analysis genome maize meiosis plant breeding plant genetics plant genome prophase Zea mays Zea mays The cytoplasm of Zea mays ssp. mexicana (teosinte) affects several inherited traits when combined with genotypes of maize (Zea mays ssp. mays). The meiotic behavior and the total DNA content of four lines of maize with teosinte cytoplasm were compared with those of the parental lines. The results obtained suggest that the cytoplasm of teosinte promotes an increase in total nuclear DNA content, perhaps through an increase of highly repetitive DNA in the knob zones. The analysis of meiotic behavior indicates that the cytoplasm of teosinte can alter the spatial distribution of the genomes, since two groups of five bivalents each were observed at a high frequency. During prophase I - anaphase I, each group of five bivalents behaves in a slightly asynchronous way with respect to the other group and, moreover, two nucleoli were observed in 10% of the cells. These results suggest that the cytoplasm of teosinte could induce changes affecting genomic structure and function in some maize genotypes. These changes are of potential importance for breeding programs and evolutionary studies. Fil:Poggio, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rosato, M. 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_08312796_v40_n5_p723_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	Alloplasmy DNA content Maize Meiotic behavior Nuclear-cytoplasmic interaction Teosinte Zea mays ssp. mexicana anaphase DNA analysis genome maize meiosis plant breeding plant genetics plant genome prophase Zea mays Zea mays
spellingShingle	Alloplasmy DNA content Maize Meiotic behavior Nuclear-cytoplasmic interaction Teosinte Zea mays ssp. mexicana anaphase DNA analysis genome maize meiosis plant breeding plant genetics plant genome prophase Zea mays Zea mays Poggio, L. Rosato, M. Naranjo, C.A. Meiotic behavior and DNA content in alloplasmic lines of maize
topic_facet	Alloplasmy DNA content Maize Meiotic behavior Nuclear-cytoplasmic interaction Teosinte Zea mays ssp. mexicana anaphase DNA analysis genome maize meiosis plant breeding plant genetics plant genome prophase Zea mays Zea mays
description	The cytoplasm of Zea mays ssp. mexicana (teosinte) affects several inherited traits when combined with genotypes of maize (Zea mays ssp. mays). The meiotic behavior and the total DNA content of four lines of maize with teosinte cytoplasm were compared with those of the parental lines. The results obtained suggest that the cytoplasm of teosinte promotes an increase in total nuclear DNA content, perhaps through an increase of highly repetitive DNA in the knob zones. The analysis of meiotic behavior indicates that the cytoplasm of teosinte can alter the spatial distribution of the genomes, since two groups of five bivalents each were observed at a high frequency. During prophase I - anaphase I, each group of five bivalents behaves in a slightly asynchronous way with respect to the other group and, moreover, two nucleoli were observed in 10% of the cells. These results suggest that the cytoplasm of teosinte could induce changes affecting genomic structure and function in some maize genotypes. These changes are of potential importance for breeding programs and evolutionary studies.
format	JOUR
author	Poggio, L. Rosato, M. Naranjo, C.A.
author_facet	Poggio, L. Rosato, M. Naranjo, C.A.
author_sort	Poggio, L.
title	Meiotic behavior and DNA content in alloplasmic lines of maize
title_short	Meiotic behavior and DNA content in alloplasmic lines of maize
title_full	Meiotic behavior and DNA content in alloplasmic lines of maize
title_fullStr	Meiotic behavior and DNA content in alloplasmic lines of maize
title_full_unstemmed	Meiotic behavior and DNA content in alloplasmic lines of maize
title_sort	meiotic behavior and dna content in alloplasmic lines of maize
url	http://hdl.handle.net/20.500.12110/paper_08312796_v40_n5_p723_Poggio
work_keys_str_mv	AT poggiol meioticbehavioranddnacontentinalloplasmiclinesofmaize AT rosatom meioticbehavioranddnacontentinalloplasmiclinesofmaize AT naranjoca meioticbehavioranddnacontentinalloplasmiclinesofmaize
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Meiotic behavior and DNA content in alloplasmic lines of maize

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