Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress

Detalhes bibliográficos
Autor(a) principal: Matos,Antônio César Batista
Data de Publicação: 2014
Outros Autores: Borges,Eduardo Euclydes de Lima e, Sekita,Marcelo Coelho
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of Seed Science
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372014000300002
Resumo: Seed germination is dependent on abiotic factors, temperature being one of the main ones, whose influence causes seed damage under extreme conditions. The aim of the present study was to investigate the effect of different temperatures during germination of D. nigra seeds and their physiological and biochemical implications. We assessed germination percentage and production of superoxide anion (O2-) and hydrogen peroxide (H2O2) in seeds subjected to temperatures of 5, 15, 25, 35 and 45 ºC for different periods of time. Hydration is promoted at 45 ºC and inhibited at 5ºC, without germination in either, whereas it is minimal at 15 °C and at a maximum level at 25 °C. Superoxide production increases at higher temperatures (25 and 35 ºC) after 72 hours of hydration, coinciding with the beginning of radicle protrusion. Production of hydrogen peroxide decreases at all temperatures, except for 5 ºC, with values near each other at temperatures of 15, 25, and 35 ºC, where there was radicle protrusion.
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spelling Production of reactive oxygen species in Dalbergia nigra seeds under thermal stressforestphysiologybiochemistryrosewoodSeed germination is dependent on abiotic factors, temperature being one of the main ones, whose influence causes seed damage under extreme conditions. The aim of the present study was to investigate the effect of different temperatures during germination of D. nigra seeds and their physiological and biochemical implications. We assessed germination percentage and production of superoxide anion (O2-) and hydrogen peroxide (H2O2) in seeds subjected to temperatures of 5, 15, 25, 35 and 45 ºC for different periods of time. Hydration is promoted at 45 ºC and inhibited at 5ºC, without germination in either, whereas it is minimal at 15 °C and at a maximum level at 25 °C. Superoxide production increases at higher temperatures (25 and 35 ºC) after 72 hours of hydration, coinciding with the beginning of radicle protrusion. Production of hydrogen peroxide decreases at all temperatures, except for 5 ºC, with values near each other at temperatures of 15, 25, and 35 ºC, where there was radicle protrusion.ABRATES - Associação Brasileira de Tecnologia de Sementes2014-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372014000300002Journal of Seed Science v.36 n.3 2014reponame:Journal of Seed Scienceinstname:Associação Brasileira de Tecnologia de Sementes (ABRATES)instacron:ABRATES10.1590/2317-1545v36n3973info:eu-repo/semantics/openAccessMatos,Antônio César BatistaBorges,Eduardo Euclydes de Lima eSekita,Marcelo Coelhoeng2014-10-03T00:00:00Zoai:scielo:S2317-15372014000300002Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=2317-1537&lng=en&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||abrates@abrates.org.br2317-15452317-1537opendoar:2014-10-03T00:00Journal of Seed Science - Associação Brasileira de Tecnologia de Sementes (ABRATES)false
dc.title.none.fl_str_mv Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
title Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
spellingShingle Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
Matos,Antônio César Batista
forest
physiology
biochemistry
rosewood
title_short Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
title_full Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
title_fullStr Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
title_full_unstemmed Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
title_sort Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
author Matos,Antônio César Batista
author_facet Matos,Antônio César Batista
Borges,Eduardo Euclydes de Lima e
Sekita,Marcelo Coelho
author_role author
author2 Borges,Eduardo Euclydes de Lima e
Sekita,Marcelo Coelho
author2_role author
author
dc.contributor.author.fl_str_mv Matos,Antônio César Batista
Borges,Eduardo Euclydes de Lima e
Sekita,Marcelo Coelho
dc.subject.por.fl_str_mv forest
physiology
biochemistry
rosewood
topic forest
physiology
biochemistry
rosewood
description Seed germination is dependent on abiotic factors, temperature being one of the main ones, whose influence causes seed damage under extreme conditions. The aim of the present study was to investigate the effect of different temperatures during germination of D. nigra seeds and their physiological and biochemical implications. We assessed germination percentage and production of superoxide anion (O2-) and hydrogen peroxide (H2O2) in seeds subjected to temperatures of 5, 15, 25, 35 and 45 ºC for different periods of time. Hydration is promoted at 45 ºC and inhibited at 5ºC, without germination in either, whereas it is minimal at 15 °C and at a maximum level at 25 °C. Superoxide production increases at higher temperatures (25 and 35 ºC) after 72 hours of hydration, coinciding with the beginning of radicle protrusion. Production of hydrogen peroxide decreases at all temperatures, except for 5 ºC, with values near each other at temperatures of 15, 25, and 35 ºC, where there was radicle protrusion.
publishDate 2014
dc.date.none.fl_str_mv 2014-09-01
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=S2317-15372014000300002
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2317-1545v36n3973
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 ABRATES - Associação Brasileira de Tecnologia de Sementes
publisher.none.fl_str_mv ABRATES - Associação Brasileira de Tecnologia de Sementes
dc.source.none.fl_str_mv Journal of Seed Science v.36 n.3 2014
reponame:Journal of Seed Science
instname:Associação Brasileira de Tecnologia de Sementes (ABRATES)
instacron:ABRATES
instname_str Associação Brasileira de Tecnologia de Sementes (ABRATES)
instacron_str ABRATES
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reponame_str Journal of Seed Science
collection Journal of Seed Science
repository.name.fl_str_mv Journal of Seed Science - Associação Brasileira de Tecnologia de Sementes (ABRATES)
repository.mail.fl_str_mv ||abrates@abrates.org.br
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