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Abstract:

The activity of nucleolar organizer regions (NORs) and the presence of ribosomal DNA (rDNA) zones were studied in two Triticum x Thinopyrum hybrids: a hexaploid hybrid with 2n = 42 chromosomes, named trigopiro SH16 INTA, and a decaploid hybrid with 2n = 56 chromosomes, named trigopiro Don Noé INTA. The use of the pTa71 probe revealed the presence of 10 rDNA signals in both hybrids, whereas the Ag-NORs technique showed 10 signals in SH16 and 8 in Don Noé. We concluded that all trigopiro SH16 INTA NORs are active and that the activity of one NOR pair of trigopiro Don Noé INTA is suppressed. Therefore, the amphiplasty phenomenon is present in trigopiro Don Noé INTA but not in trigopiro SH16 INTA. © 2016 Società Botanica Italiana.

Registro:

Documento: Artículo
Título:Nucleolar activity in Triticum x Thinopyrum hybrids with different ploidy level
Autor:Fradkin, M.; Greizerstein, E.J.; Ferrari, M.R.; Poggio, L.
Filiación:Cátedra de Mejoramiento Genético, Facultad de Ciencias Agrarias, Universidad Nacional de Lomas de Zamora (UNLZ), Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Laboratorio de Citogenética y Evolución, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA)–CONICET, Argentina
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Argentina
Palabras clave:Ag-NOR; in situ hybridization; pTa71; Thinopyrum; Triticum
Año:2017
Volumen:151
Número:6
Página de inicio:996
Página de fin:1001
DOI: http://dx.doi.org/10.1080/11263504.2016.1218973
Título revista:Plant Biosystems
Título revista abreviado:Plant Biosyst.
ISSN:11263504
CODEN:GBOIA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11263504_v151_n6_p996_Fradkin

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Citas:

---------- APA ----------
Fradkin, M., Greizerstein, E.J., Ferrari, M.R. & Poggio, L. (2017) . Nucleolar activity in Triticum x Thinopyrum hybrids with different ploidy level. Plant Biosystems, 151(6), 996-1001.
http://dx.doi.org/10.1080/11263504.2016.1218973
---------- CHICAGO ----------
Fradkin, M., Greizerstein, E.J., Ferrari, M.R., Poggio, L. "Nucleolar activity in Triticum x Thinopyrum hybrids with different ploidy level" . Plant Biosystems 151, no. 6 (2017) : 996-1001.
http://dx.doi.org/10.1080/11263504.2016.1218973
---------- MLA ----------
Fradkin, M., Greizerstein, E.J., Ferrari, M.R., Poggio, L. "Nucleolar activity in Triticum x Thinopyrum hybrids with different ploidy level" . Plant Biosystems, vol. 151, no. 6, 2017, pp. 996-1001.
http://dx.doi.org/10.1080/11263504.2016.1218973
---------- VANCOUVER ----------
Fradkin, M., Greizerstein, E.J., Ferrari, M.R., Poggio, L. Nucleolar activity in Triticum x Thinopyrum hybrids with different ploidy level. Plant Biosyst. 2017;151(6):996-1001.
http://dx.doi.org/10.1080/11263504.2016.1218973