Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400008 |
Resumo: | The Abnc strain of A. nidulans carries the bncA1 gene (binucleated conidia), which induces the formation of binucleate and trinucleate conidia, displaying a chromosome I duplicated area and shifted to the chromosome II (I->II), and bringing forth genetic instability with degenerated sectors. This work has considered in a cytological level the conidiogenesis of the deteriorated variants isolated from the Abnc strain of A. nidulans, observing the event at the level of structural alterations, which composes the conidiophore, and the variations in the number of sterigmata and conidia nuclei. Cytogenetic analyses of conidiogenesis were accomplished in predetermined periods, under Giemsa stain, to observe the nuclei and analysis through the Scanning Electronic Microscopy, and also the structures that composes the conidiophore. The analyzed, deteriorated variants presented alterations in the cell-foot, metulae and phialides structure, conidiophore number and conidias reduction, and the formation of secondary conidiophores. These alterations can be related to genes for the development, bristle, and activities of NIMA e NINXcdc2 (involved in morphogenesis regulatory cycle) that induce the expression of brislte, establishing the link to the regulation and expression of the genes control throughout the conidiophore development. |
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Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulansbristleconidiophoredevelopmental mutantsThe Abnc strain of A. nidulans carries the bncA1 gene (binucleated conidia), which induces the formation of binucleate and trinucleate conidia, displaying a chromosome I duplicated area and shifted to the chromosome II (I->II), and bringing forth genetic instability with degenerated sectors. This work has considered in a cytological level the conidiogenesis of the deteriorated variants isolated from the Abnc strain of A. nidulans, observing the event at the level of structural alterations, which composes the conidiophore, and the variations in the number of sterigmata and conidia nuclei. Cytogenetic analyses of conidiogenesis were accomplished in predetermined periods, under Giemsa stain, to observe the nuclei and analysis through the Scanning Electronic Microscopy, and also the structures that composes the conidiophore. The analyzed, deteriorated variants presented alterations in the cell-foot, metulae and phialides structure, conidiophore number and conidias reduction, and the formation of secondary conidiophores. These alterations can be related to genes for the development, bristle, and activities of NIMA e NINXcdc2 (involved in morphogenesis regulatory cycle) that induce the expression of brislte, establishing the link to the regulation and expression of the genes control throughout the conidiophore development.Escola Superior de Agricultura "Luiz de Queiroz"2004-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400008Scientia Agricola v.61 n.4 2004reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162004000400008info:eu-repo/semantics/openAccessGiancoli,Ágata Cristiane HuppertPizzirani-Kleiner,Aline Aparecidaeng2004-11-09T00:00:00Zoai:scielo:S0103-90162004000400008Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2004-11-09T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans |
title |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans |
spellingShingle |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans Giancoli,Ágata Cristiane Huppert bristle conidiophore developmental mutants |
title_short |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans |
title_full |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans |
title_fullStr |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans |
title_full_unstemmed |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans |
title_sort |
Conidiogenesis of deteriorated variant of the strain Abnc of Aspergillus nidulans |
author |
Giancoli,Ágata Cristiane Huppert |
author_facet |
Giancoli,Ágata Cristiane Huppert Pizzirani-Kleiner,Aline Aparecida |
author_role |
author |
author2 |
Pizzirani-Kleiner,Aline Aparecida |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Giancoli,Ágata Cristiane Huppert Pizzirani-Kleiner,Aline Aparecida |
dc.subject.por.fl_str_mv |
bristle conidiophore developmental mutants |
topic |
bristle conidiophore developmental mutants |
description |
The Abnc strain of A. nidulans carries the bncA1 gene (binucleated conidia), which induces the formation of binucleate and trinucleate conidia, displaying a chromosome I duplicated area and shifted to the chromosome II (I->II), and bringing forth genetic instability with degenerated sectors. This work has considered in a cytological level the conidiogenesis of the deteriorated variants isolated from the Abnc strain of A. nidulans, observing the event at the level of structural alterations, which composes the conidiophore, and the variations in the number of sterigmata and conidia nuclei. Cytogenetic analyses of conidiogenesis were accomplished in predetermined periods, under Giemsa stain, to observe the nuclei and analysis through the Scanning Electronic Microscopy, and also the structures that composes the conidiophore. The analyzed, deteriorated variants presented alterations in the cell-foot, metulae and phialides structure, conidiophore number and conidias reduction, and the formation of secondary conidiophores. These alterations can be related to genes for the development, bristle, and activities of NIMA e NINXcdc2 (involved in morphogenesis regulatory cycle) that induce the expression of brislte, establishing the link to the regulation and expression of the genes control throughout the conidiophore development. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162004000400008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.61 n.4 2004 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1748936459313741824 |