Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae)
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Botany |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000200004 |
Resumo: | The female gametophyte has a monosporic origin and a Polygonum type development. The female gametophyte growth consumes a large part of the neighboring nucellar cells and, in the micropylar region, part of the nucellar epidermis and internal integument. The mature gametophyte is composed of only four cells due to the ephemeral characteristic of the antipodals. The synergids are pear-shaped cells with the formation of filiform apparatus. Their nuclei lie in the micropylar region and large vacuoles in the chalazal region, while the egg cell presents an opposite polarization. The central cell accumulates starch grains and the two polar nuclei approach the egg. Occasional development of two gametophytes was recorded. The closest to the micropyle develops fully, while the chalazal one remained in the tetranucleated stage. The embryological characters of A. latifolia are compared with those of other taxa within the Leguminosae, and the reproductive importance of multiple gametophyte formation for this species was discussed. |
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Brazilian Journal of Botany |
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Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae)Adesmiaembryo sacembryologyfemale gametophyteLeguminosaeThe female gametophyte has a monosporic origin and a Polygonum type development. The female gametophyte growth consumes a large part of the neighboring nucellar cells and, in the micropylar region, part of the nucellar epidermis and internal integument. The mature gametophyte is composed of only four cells due to the ephemeral characteristic of the antipodals. The synergids are pear-shaped cells with the formation of filiform apparatus. Their nuclei lie in the micropylar region and large vacuoles in the chalazal region, while the egg cell presents an opposite polarization. The central cell accumulates starch grains and the two polar nuclei approach the egg. Occasional development of two gametophytes was recorded. The closest to the micropyle develops fully, while the chalazal one remained in the tetranucleated stage. The embryological characters of A. latifolia are compared with those of other taxa within the Leguminosae, and the reproductive importance of multiple gametophyte formation for this species was discussed.Sociedade Botânica de São Paulo2004-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000200004Brazilian Journal of Botany v.27 n.2 2004reponame:Brazilian Journal of Botanyinstname:Sociedade Botânica de São Paulo (SBSP)instacron:SBSP10.1590/S0100-84042004000200004info:eu-repo/semantics/openAccessMoço,Maria C.C.Mariath,Jorge E.A.eng2004-09-10T00:00:00Zoai:scielo:S0100-84042004000200004Revistahttps://www.scielo.br/j/rbb/ONGhttps://old.scielo.br/oai/scielo-oai.phpbrazbot@gmail.com||brazbot@gmail.com1806-99590100-8404opendoar:2004-09-10T00:00Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP)false |
dc.title.none.fl_str_mv |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) |
title |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) |
spellingShingle |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) Moço,Maria C.C. Adesmia embryo sac embryology female gametophyte Leguminosae |
title_short |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) |
title_full |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) |
title_fullStr |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) |
title_full_unstemmed |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) |
title_sort |
Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae) |
author |
Moço,Maria C.C. |
author_facet |
Moço,Maria C.C. Mariath,Jorge E.A. |
author_role |
author |
author2 |
Mariath,Jorge E.A. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Moço,Maria C.C. Mariath,Jorge E.A. |
dc.subject.por.fl_str_mv |
Adesmia embryo sac embryology female gametophyte Leguminosae |
topic |
Adesmia embryo sac embryology female gametophyte Leguminosae |
description |
The female gametophyte has a monosporic origin and a Polygonum type development. The female gametophyte growth consumes a large part of the neighboring nucellar cells and, in the micropylar region, part of the nucellar epidermis and internal integument. The mature gametophyte is composed of only four cells due to the ephemeral characteristic of the antipodals. The synergids are pear-shaped cells with the formation of filiform apparatus. Their nuclei lie in the micropylar region and large vacuoles in the chalazal region, while the egg cell presents an opposite polarization. The central cell accumulates starch grains and the two polar nuclei approach the egg. Occasional development of two gametophytes was recorded. The closest to the micropyle develops fully, while the chalazal one remained in the tetranucleated stage. The embryological characters of A. latifolia are compared with those of other taxa within the Leguminosae, and the reproductive importance of multiple gametophyte formation for this species was discussed. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-06-01 |
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=S0100-84042004000200004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000200004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-84042004000200004 |
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.27 n.2 2004 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_ |
1754734838516023296 |