Production of reactive oxygen species in Dalbergia nigra seeds under thermal stress
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
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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Journal of Seed Science |
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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 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372014000300002 |
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 |
institution |
ABRATES |
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 |
_version_ |
1754212982012772352 |