Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UCB |
Texto Completo: | http://twingo.ucb.br:8080/jspui/handle/10869/467 https://repositorio.ucb.br:9443/jspui/handle/123456789/7648 |
Resumo: | To determine the range of gene activities associated with leaf senescence, we have identified genes that show preferential transcript accumulation during this developmental stage. The mRNA levels of a diverse array of gene products increases during leaf senescence, including a protease, a ribosomal protein, two cinnamyl alcohol dehydrogenases, a nitrilase and glyoxalase II. Two of the genes identified are known to be pathogen-induced. The senescence specificity of each gene was determined by characterization of transcript accumulation during leaf development and in different tissues. The increased expression of nitrilase in senescent leaves is paralleled by an increase in free indole-3-acetic acid (IAA) levels. Additionally, we have demonstrated that the induction of defense-related genes during leaf senescence is pathogen-independent and that salicylic acid accumulation is not essential for this induction. Our data indicate that the induction of certain genes involved in plant defense responses is a component of the leaf senescence program. |
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Quirino, Betania FerrazNormanly, JenniferAmasino, Richard M.2016-10-10T03:52:13Z2016-10-10T03:52:13Z1999QUIRINO, Betania Ferraz; NORMANLY, Jennifer; AMASINO, Richard M. Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes. Plant Molecular Biology, v. 40, n. 2, p. 267-278, 1999.1674412http://twingo.ucb.br:8080/jspui/handle/10869/467https://repositorio.ucb.br:9443/jspui/handle/123456789/7648To determine the range of gene activities associated with leaf senescence, we have identified genes that show preferential transcript accumulation during this developmental stage. The mRNA levels of a diverse array of gene products increases during leaf senescence, including a protease, a ribosomal protein, two cinnamyl alcohol dehydrogenases, a nitrilase and glyoxalase II. Two of the genes identified are known to be pathogen-induced. The senescence specificity of each gene was determined by characterization of transcript accumulation during leaf development and in different tissues. The increased expression of nitrilase in senescent leaves is paralleled by an increase in free indole-3-acetic acid (IAA) levels. Additionally, we have demonstrated that the induction of defense-related genes during leaf senescence is pathogen-independent and that salicylic acid accumulation is not essential for this induction. Our data indicate that the induction of certain genes involved in plant defense responses is a component of the leaf senescence program.Made available in DSpace on 2016-10-10T03:52:13Z (GMT). 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dc.title.pt_BR.fl_str_mv |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes |
title |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes |
spellingShingle |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes Quirino, Betania Ferraz Defense Gene expression Leaf senescence Nitrilase Pathogen-free Salicylic acid |
title_short |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes |
title_full |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes |
title_fullStr |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes |
title_full_unstemmed |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes |
title_sort |
Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes |
author |
Quirino, Betania Ferraz |
author_facet |
Quirino, Betania Ferraz Normanly, Jennifer Amasino, Richard M. |
author_role |
author |
author2 |
Normanly, Jennifer Amasino, Richard M. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Quirino, Betania Ferraz Normanly, Jennifer Amasino, Richard M. |
dc.subject.por.fl_str_mv |
Defense Gene expression Leaf senescence Nitrilase Pathogen-free Salicylic acid |
topic |
Defense Gene expression Leaf senescence Nitrilase Pathogen-free Salicylic acid |
dc.description.abstract.por.fl_txt_mv |
To determine the range of gene activities associated with leaf senescence, we have identified genes that show preferential transcript accumulation during this developmental stage. The mRNA levels of a diverse array of gene products increases during leaf senescence, including a protease, a ribosomal protein, two cinnamyl alcohol dehydrogenases, a nitrilase and glyoxalase II. Two of the genes identified are known to be pathogen-induced. The senescence specificity of each gene was determined by characterization of transcript accumulation during leaf development and in different tissues. The increased expression of nitrilase in senescent leaves is paralleled by an increase in free indole-3-acetic acid (IAA) levels. Additionally, we have demonstrated that the induction of defense-related genes during leaf senescence is pathogen-independent and that salicylic acid accumulation is not essential for this induction. Our data indicate that the induction of certain genes involved in plant defense responses is a component of the leaf senescence program. |
dc.description.version.pt_BR.fl_txt_mv |
Sim |
dc.description.status.pt_BR.fl_txt_mv |
Publicado |
description |
To determine the range of gene activities associated with leaf senescence, we have identified genes that show preferential transcript accumulation during this developmental stage. The mRNA levels of a diverse array of gene products increases during leaf senescence, including a protease, a ribosomal protein, two cinnamyl alcohol dehydrogenases, a nitrilase and glyoxalase II. Two of the genes identified are known to be pathogen-induced. The senescence specificity of each gene was determined by characterization of transcript accumulation during leaf development and in different tissues. The increased expression of nitrilase in senescent leaves is paralleled by an increase in free indole-3-acetic acid (IAA) levels. Additionally, we have demonstrated that the induction of defense-related genes during leaf senescence is pathogen-independent and that salicylic acid accumulation is not essential for this induction. Our data indicate that the induction of certain genes involved in plant defense responses is a component of the leaf senescence program. |
publishDate |
1999 |
dc.date.issued.fl_str_mv |
1999 |
dc.date.accessioned.fl_str_mv |
2016-10-10T03:52:13Z |
dc.date.available.fl_str_mv |
2016-10-10T03:52:13Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
status_str |
publishedVersion |
format |
article |
dc.identifier.citation.fl_str_mv |
QUIRINO, Betania Ferraz; NORMANLY, Jennifer; AMASINO, Richard M. Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes. Plant Molecular Biology, v. 40, n. 2, p. 267-278, 1999. |
dc.identifier.uri.fl_str_mv |
http://twingo.ucb.br:8080/jspui/handle/10869/467 https://repositorio.ucb.br:9443/jspui/handle/123456789/7648 |
dc.identifier.issn.none.fl_str_mv |
1674412 |
identifier_str_mv |
QUIRINO, Betania Ferraz; NORMANLY, Jennifer; AMASINO, Richard M. Diverse range of gene activity during arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes. Plant Molecular Biology, v. 40, n. 2, p. 267-278, 1999. 1674412 |
url |
http://twingo.ucb.br:8080/jspui/handle/10869/467 https://repositorio.ucb.br:9443/jspui/handle/123456789/7648 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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Universidade Católica de Brasília (UCB) |
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UCB |
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UCB |
reponame_str |
Repositório Institucional da UCB |
collection |
Repositório Institucional da UCB |
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