Parasexuality in asexual development mutants of Aspergillus nidulans

The parasexual cycle with parameiosis has been characterized previously by the occurrence of genetic recombination and haploidization inside heterokaryotic hyphae prior to conidial formation. The aim of current research was to characterize, through genetic and cytological analyses, an asexual develo...

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Autores principales:	ALEXANDRINO BECKER,TÂNIA CRISTINA, ALVES DE CASTRO-PRADO,MARIALBA A
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2006
Materias:	parasexual cycle conidiation mutants mitotic recombination haploid recombinants
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000200012
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spelling	oai:scielo:S0716-976020060002000122006-07-25Parasexuality in asexual development mutants of Aspergillus nidulansALEXANDRINO BECKER,TÂNIA CRISTINAALVES DE CASTRO-PRADO,MARIALBA A parasexual cycle conidiation mutants mitotic recombination haploid recombinants The parasexual cycle with parameiosis has been characterized previously by the occurrence of genetic recombination and haploidization inside heterokaryotic hyphae prior to conidial formation. The aim of current research was to characterize, through genetic and cytological analyses, an asexual development mutant strain of A. nidulans and to use it to obtain parameiotic segregants. Analyses showed the medusa phenotype of the B84 strain, whose mutant allele was mapped in the chromosome I. The heterokaryons B84(med)//G422(med+) and B84(med)//G839(brl) were formed in liquid MM+2% CM and inoculated in the appropriate selective media. Two mitotic segregant groups were obtained: aneuploids and haploid stable recombinants. Mitotic segregants, wild-types, and developmental mutants, which did not produce new visible mitotic sectors in the presence of Benomyl and which showed normal meiotic behavior during the sexual cycle, were classified as parameioticsinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.39 n.2 20062006-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000200012en10.4067/S0716-97602006000200012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	parasexual cycle conidiation mutants mitotic recombination haploid recombinants
spellingShingle	parasexual cycle conidiation mutants mitotic recombination haploid recombinants ALEXANDRINO BECKER,TÂNIA CRISTINA ALVES DE CASTRO-PRADO,MARIALBA A Parasexuality in asexual development mutants of Aspergillus nidulans
description	The parasexual cycle with parameiosis has been characterized previously by the occurrence of genetic recombination and haploidization inside heterokaryotic hyphae prior to conidial formation. The aim of current research was to characterize, through genetic and cytological analyses, an asexual development mutant strain of A. nidulans and to use it to obtain parameiotic segregants. Analyses showed the medusa phenotype of the B84 strain, whose mutant allele was mapped in the chromosome I. The heterokaryons B84(med)//G422(med+) and B84(med)//G839(brl) were formed in liquid MM+2% CM and inoculated in the appropriate selective media. Two mitotic segregant groups were obtained: aneuploids and haploid stable recombinants. Mitotic segregants, wild-types, and developmental mutants, which did not produce new visible mitotic sectors in the presence of Benomyl and which showed normal meiotic behavior during the sexual cycle, were classified as parameiotics
author	ALEXANDRINO BECKER,TÂNIA CRISTINA ALVES DE CASTRO-PRADO,MARIALBA A
author_facet	ALEXANDRINO BECKER,TÂNIA CRISTINA ALVES DE CASTRO-PRADO,MARIALBA A
author_sort	ALEXANDRINO BECKER,TÂNIA CRISTINA
title	Parasexuality in asexual development mutants of Aspergillus nidulans
title_short	Parasexuality in asexual development mutants of Aspergillus nidulans
title_full	Parasexuality in asexual development mutants of Aspergillus nidulans
title_fullStr	Parasexuality in asexual development mutants of Aspergillus nidulans
title_full_unstemmed	Parasexuality in asexual development mutants of Aspergillus nidulans
title_sort	parasexuality in asexual development mutants of aspergillus nidulans
publisher	Sociedad de Biología de Chile
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000200012
work_keys_str_mv	AT alexandrinobeckertaniacristina parasexualityinasexualdevelopmentmutantsofaspergillusnidulans AT alvesdecastropradomarialbaa parasexualityinasexualdevelopmentmutantsofaspergillusnidulans
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Parasexuality in asexual development mutants of Aspergillus nidulans

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