Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze.
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , |
Tipo de documento: | Relatório |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Botany |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000200003 |
Resumo: | Changes in the polyamine content were analyzed in different embryo developmental stages and tissues during seed development in the conifer Araucaria angustifolia (Bert.) O. Ktze. Free polyamine contents varied according to the tissue and stage of embryo development, the highest levels occurring in the embryonic axis at the early stages, when putrescine and spermidine were most abundant. The levels of spermidine were higher from the stage where cotyledons arise, whereas putrescine decreases. The putrescine/spermine+spermidine ratio was higher during the initial phases of seed development, corresponding to cell multiplication and elongation, with a decrease in the final stages, corresponding to stabilization of the dry matter content. |
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Brazilian Journal of Botany |
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Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze.Araucaria angustifoliaembryogenesispolyaminesChanges in the polyamine content were analyzed in different embryo developmental stages and tissues during seed development in the conifer Araucaria angustifolia (Bert.) O. Ktze. Free polyamine contents varied according to the tissue and stage of embryo development, the highest levels occurring in the embryonic axis at the early stages, when putrescine and spermidine were most abundant. The levels of spermidine were higher from the stage where cotyledons arise, whereas putrescine decreases. The putrescine/spermine+spermidine ratio was higher during the initial phases of seed development, corresponding to cell multiplication and elongation, with a decrease in the final stages, corresponding to stabilization of the dry matter content.Sociedade Botânica de São Paulo2003-06-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000200003Brazilian Journal of Botany v.26 n.2 2003reponame:Brazilian Journal of Botanyinstname:Sociedade Botânica de São Paulo (SBSP)instacron:SBSP10.1590/S0100-84042003000200003info:eu-repo/semantics/openAccessAstarita,Landro V.Handro,WalterFloh,Eny I.S.eng2004-04-22T00:00:00Zoai:scielo:S0100-84042003000200003Revistahttps://www.scielo.br/j/rbb/ONGhttps://old.scielo.br/oai/scielo-oai.phpbrazbot@gmail.com||brazbot@gmail.com1806-99590100-8404opendoar:2004-04-22T00:00Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP)false |
dc.title.none.fl_str_mv |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. |
title |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. |
spellingShingle |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. Astarita,Landro V. Araucaria angustifolia embryogenesis polyamines |
title_short |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. |
title_full |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. |
title_fullStr |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. |
title_full_unstemmed |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. |
title_sort |
Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze. |
author |
Astarita,Landro V. |
author_facet |
Astarita,Landro V. Handro,Walter Floh,Eny I.S. |
author_role |
author |
author2 |
Handro,Walter Floh,Eny I.S. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Astarita,Landro V. Handro,Walter Floh,Eny I.S. |
dc.subject.por.fl_str_mv |
Araucaria angustifolia embryogenesis polyamines |
topic |
Araucaria angustifolia embryogenesis polyamines |
description |
Changes in the polyamine content were analyzed in different embryo developmental stages and tissues during seed development in the conifer Araucaria angustifolia (Bert.) O. Ktze. Free polyamine contents varied according to the tissue and stage of embryo development, the highest levels occurring in the embryonic axis at the early stages, when putrescine and spermidine were most abundant. The levels of spermidine were higher from the stage where cotyledons arise, whereas putrescine decreases. The putrescine/spermine+spermidine ratio was higher during the initial phases of seed development, corresponding to cell multiplication and elongation, with a decrease in the final stages, corresponding to stabilization of the dry matter content. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/report |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
report |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000200003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000200003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-84042003000200003 |
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 |
Sociedade Botânica de São Paulo |
publisher.none.fl_str_mv |
Sociedade Botânica de São Paulo |
dc.source.none.fl_str_mv |
Brazilian Journal of Botany v.26 n.2 2003 reponame:Brazilian Journal of Botany instname:Sociedade Botânica de São Paulo (SBSP) instacron:SBSP |
instname_str |
Sociedade Botânica de São Paulo (SBSP) |
instacron_str |
SBSP |
institution |
SBSP |
reponame_str |
Brazilian Journal of Botany |
collection |
Brazilian Journal of Botany |
repository.name.fl_str_mv |
Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP) |
repository.mail.fl_str_mv |
brazbot@gmail.com||brazbot@gmail.com |
_version_ |
1754734838185721856 |