Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze.

Detalhes bibliográficos
Autor(a) principal: Astarita,Landro V.
Data de Publicação: 2003
Outros Autores: Handro,Walter, Floh,Eny I.S.
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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spelling 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
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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
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