Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/87993 |
Resumo: | When plants are exposed to stressful environmental conditions, the production of Reactive Oxygen Species (ROS) increases and can cause significant damage to the cells. Antioxidant defenses, which can detoxify ROS, are present in plants. A major hydrogen peroxide detoxifying system in plant cells is the ascorbate-glutathione cycle, in which, ascorbate peroxidase (APX) enzymes play a key role catalyzing the conversion of H2O2 into H2O, using ascorbate as a specific electron donor. Different APX isoforms are present in distinct subcellular compartments, such as chloroplasts, mitochondria, peroxisome, and cytosol. The expression ofAPX genes is regulated in response to biotic and abiotic stresses as well as during plant development. The APX responses are directly involved in the protection of plant cells against adverse environmental conditions. Furthermore, mutant plants APX genes showed alterations in growth, physiology and antioxidant metabolism revealing those enzymes involvement in the normal plant development. |
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Caverzan, AndréiaPassaia, GiseleRosa, Sílvia BarcellosRibeiro, Carolina WernerLazzarotto, FernandaMargis-Pinheiro, Márcia2014-02-28T01:50:54Z20121415-4757http://hdl.handle.net/10183/87993000876400When plants are exposed to stressful environmental conditions, the production of Reactive Oxygen Species (ROS) increases and can cause significant damage to the cells. Antioxidant defenses, which can detoxify ROS, are present in plants. A major hydrogen peroxide detoxifying system in plant cells is the ascorbate-glutathione cycle, in which, ascorbate peroxidase (APX) enzymes play a key role catalyzing the conversion of H2O2 into H2O, using ascorbate as a specific electron donor. Different APX isoforms are present in distinct subcellular compartments, such as chloroplasts, mitochondria, peroxisome, and cytosol. The expression ofAPX genes is regulated in response to biotic and abiotic stresses as well as during plant development. The APX responses are directly involved in the protection of plant cells against adverse environmental conditions. Furthermore, mutant plants APX genes showed alterations in growth, physiology and antioxidant metabolism revealing those enzymes involvement in the normal plant development.application/pdfengGenetics and molecular biology. Vol. 35, n. 4 supl (Dec. 2012), p. 1011-1019Estresse abióticoAntioxidantesPeroxidaseAscorbatoascorbate peroxidaseantioxidant systemreactive oxygen speciesabiotic stressmutant plantsPlant responses to stresses : role ascorbate peroxidase in the antioxidant protectioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000876400.pdf000876400.pdfTexto completo (inglês)application/pdf772969http://www.lume.ufrgs.br/bitstream/10183/87993/1/000876400.pdfaca92c94d7a998cb05fd83302ebd72ccMD51TEXT000876400.pdf.txt000876400.pdf.txtExtracted Texttext/plain47588http://www.lume.ufrgs.br/bitstream/10183/87993/2/000876400.pdf.txt52a8fca384505643f31f05a3d168d9fdMD52THUMBNAIL000876400.pdf.jpg000876400.pdf.jpgGenerated Thumbnailimage/jpeg1894http://www.lume.ufrgs.br/bitstream/10183/87993/3/000876400.pdf.jpg5a411d3481755d97580a5f8aa9a3bd6aMD5310183/879932021-07-09 04:36:45.51788oai:www.lume.ufrgs.br:10183/87993Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-07-09T07:36:45Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection |
title |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection |
spellingShingle |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection Caverzan, Andréia Estresse abiótico Antioxidantes Peroxidase Ascorbato ascorbate peroxidase antioxidant system reactive oxygen species abiotic stress mutant plants |
title_short |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection |
title_full |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection |
title_fullStr |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection |
title_full_unstemmed |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection |
title_sort |
Plant responses to stresses : role ascorbate peroxidase in the antioxidant protection |
author |
Caverzan, Andréia |
author_facet |
Caverzan, Andréia Passaia, Gisele Rosa, Sílvia Barcellos Ribeiro, Carolina Werner Lazzarotto, Fernanda Margis-Pinheiro, Márcia |
author_role |
author |
author2 |
Passaia, Gisele Rosa, Sílvia Barcellos Ribeiro, Carolina Werner Lazzarotto, Fernanda Margis-Pinheiro, Márcia |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Caverzan, Andréia Passaia, Gisele Rosa, Sílvia Barcellos Ribeiro, Carolina Werner Lazzarotto, Fernanda Margis-Pinheiro, Márcia |
dc.subject.por.fl_str_mv |
Estresse abiótico Antioxidantes Peroxidase Ascorbato |
topic |
Estresse abiótico Antioxidantes Peroxidase Ascorbato ascorbate peroxidase antioxidant system reactive oxygen species abiotic stress mutant plants |
dc.subject.eng.fl_str_mv |
ascorbate peroxidase antioxidant system reactive oxygen species abiotic stress mutant plants |
description |
When plants are exposed to stressful environmental conditions, the production of Reactive Oxygen Species (ROS) increases and can cause significant damage to the cells. Antioxidant defenses, which can detoxify ROS, are present in plants. A major hydrogen peroxide detoxifying system in plant cells is the ascorbate-glutathione cycle, in which, ascorbate peroxidase (APX) enzymes play a key role catalyzing the conversion of H2O2 into H2O, using ascorbate as a specific electron donor. Different APX isoforms are present in distinct subcellular compartments, such as chloroplasts, mitochondria, peroxisome, and cytosol. The expression ofAPX genes is regulated in response to biotic and abiotic stresses as well as during plant development. The APX responses are directly involved in the protection of plant cells against adverse environmental conditions. Furthermore, mutant plants APX genes showed alterations in growth, physiology and antioxidant metabolism revealing those enzymes involvement in the normal plant development. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012 |
dc.date.accessioned.fl_str_mv |
2014-02-28T01:50:54Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/87993 |
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1415-4757 |
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000876400 |
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1415-4757 000876400 |
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http://hdl.handle.net/10183/87993 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Genetics and molecular biology. Vol. 35, n. 4 supl (Dec. 2012), p. 1011-1019 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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