The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1086/685446 http://hdl.handle.net/11449/178031 |
Resumo: | Premise of research. In Apocynaceae, nonarticulated laticifers have been recorded in most species studied. Interpretation of the mode of development of laticifers, whether articulated or nonarticulated, is controversial, possibly because of the rapid changes that occur in the early differentiation stages of the structures. Here, we describe laticifers in the embryo, seedling, and plant of Tabernaemontana catharinensis A.DC. (Apocynaceae), aiming to understand the structure and developmental mechanism of the laticifer system. Methodology. We prepared samples of mature embryos, 20-d-old seedlings, and 80-d-old plants of T. catharinensis according to conventional light microscopy techniques for anatomical and histochemical analysis. Pivotal results. Articulated anastomosing laticifers with intrusive growth, producing proteins, lipids, and terpenes, are present from mature embryos. Alkaloids are present in the laticifer protoplast of the older portions of the stem. Laticifers of the primary system originate from the ground meristem and procambium, and those of the secondary system originate from the vascular cambium toward the secondary phloem. In the embryo, laticifers are found in the ground meristem and procambium but do not occur in the promeristem; the nodal region exhibits lateral projections between laticifers and ground meristem cells. In seedlings and plants, laticifers are immersed in the parenchyma tissue and associated with the primary and secondary phloem of the root and shoot systems. The anatomical evidence suggests the incorporation of meristematic and parenchyma cells within the laticifer system. Conclusions. The laticifer system of T. catharinensis has a complex structure and developmental mechanism involving protoplast fusion, the addition of cells, and intrusive growth. We recorded, for the first time, the occurrence of intrusive growth associated with articulated anastomosing laticifers in a member of Apocynaceae. Our findings highlight the importance of detailed anatomical analysis to properly classify laticifers and to access their origin and development. |
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Repositório Institucional da UNESP |
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The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for ApocynaceaeInducing actionIntrusive growthLaticifersOntogenyPremise of research. In Apocynaceae, nonarticulated laticifers have been recorded in most species studied. Interpretation of the mode of development of laticifers, whether articulated or nonarticulated, is controversial, possibly because of the rapid changes that occur in the early differentiation stages of the structures. Here, we describe laticifers in the embryo, seedling, and plant of Tabernaemontana catharinensis A.DC. (Apocynaceae), aiming to understand the structure and developmental mechanism of the laticifer system. Methodology. We prepared samples of mature embryos, 20-d-old seedlings, and 80-d-old plants of T. catharinensis according to conventional light microscopy techniques for anatomical and histochemical analysis. Pivotal results. Articulated anastomosing laticifers with intrusive growth, producing proteins, lipids, and terpenes, are present from mature embryos. Alkaloids are present in the laticifer protoplast of the older portions of the stem. Laticifers of the primary system originate from the ground meristem and procambium, and those of the secondary system originate from the vascular cambium toward the secondary phloem. In the embryo, laticifers are found in the ground meristem and procambium but do not occur in the promeristem; the nodal region exhibits lateral projections between laticifers and ground meristem cells. In seedlings and plants, laticifers are immersed in the parenchyma tissue and associated with the primary and secondary phloem of the root and shoot systems. The anatomical evidence suggests the incorporation of meristematic and parenchyma cells within the laticifer system. Conclusions. The laticifer system of T. catharinensis has a complex structure and developmental mechanism involving protoplast fusion, the addition of cells, and intrusive growth. We recorded, for the first time, the occurrence of intrusive growth associated with articulated anastomosing laticifers in a member of Apocynaceae. Our findings highlight the importance of detailed anatomical analysis to properly classify laticifers and to access their origin and development.Departamento de Botânica Instituto de Biociências Univ Estadual Paulista (UNESP)Departamento de Botânica Instituto de Biociências UNESPDepartamento de Botânica Instituto de Biociências Univ Estadual Paulista (UNESP)Departamento de Botânica Instituto de Biociências UNESPUniversidade Estadual Paulista (Unesp)Canaveze, Yve [UNESP]Machado, Silvia Rodrigues [UNESP]2018-12-11T17:28:18Z2018-12-11T17:28:18Z2016-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article458-467application/pdfhttp://dx.doi.org/10.1086/685446International Journal of Plant Sciences, v. 177, n. 5, p. 458-467, 2016.1058-5893http://hdl.handle.net/11449/17803110.1086/6854462-s2.0-849692534472-s2.0-84969253447.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Plant Sciences0,798info:eu-repo/semantics/openAccess2023-12-23T06:16:28Zoai:repositorio.unesp.br:11449/178031Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:05:01.452885Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae |
title |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae |
spellingShingle |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae Canaveze, Yve [UNESP] Inducing action Intrusive growth Laticifers Ontogeny |
title_short |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae |
title_full |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae |
title_fullStr |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae |
title_full_unstemmed |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae |
title_sort |
The occurrence of intrusive growth associated with articulated laticifers in Tabernaemontana catharinensis A.DC., a new record for Apocynaceae |
author |
Canaveze, Yve [UNESP] |
author_facet |
Canaveze, Yve [UNESP] Machado, Silvia Rodrigues [UNESP] |
author_role |
author |
author2 |
Machado, Silvia Rodrigues [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Canaveze, Yve [UNESP] Machado, Silvia Rodrigues [UNESP] |
dc.subject.por.fl_str_mv |
Inducing action Intrusive growth Laticifers Ontogeny |
topic |
Inducing action Intrusive growth Laticifers Ontogeny |
description |
Premise of research. In Apocynaceae, nonarticulated laticifers have been recorded in most species studied. Interpretation of the mode of development of laticifers, whether articulated or nonarticulated, is controversial, possibly because of the rapid changes that occur in the early differentiation stages of the structures. Here, we describe laticifers in the embryo, seedling, and plant of Tabernaemontana catharinensis A.DC. (Apocynaceae), aiming to understand the structure and developmental mechanism of the laticifer system. Methodology. We prepared samples of mature embryos, 20-d-old seedlings, and 80-d-old plants of T. catharinensis according to conventional light microscopy techniques for anatomical and histochemical analysis. Pivotal results. Articulated anastomosing laticifers with intrusive growth, producing proteins, lipids, and terpenes, are present from mature embryos. Alkaloids are present in the laticifer protoplast of the older portions of the stem. Laticifers of the primary system originate from the ground meristem and procambium, and those of the secondary system originate from the vascular cambium toward the secondary phloem. In the embryo, laticifers are found in the ground meristem and procambium but do not occur in the promeristem; the nodal region exhibits lateral projections between laticifers and ground meristem cells. In seedlings and plants, laticifers are immersed in the parenchyma tissue and associated with the primary and secondary phloem of the root and shoot systems. The anatomical evidence suggests the incorporation of meristematic and parenchyma cells within the laticifer system. Conclusions. The laticifer system of T. catharinensis has a complex structure and developmental mechanism involving protoplast fusion, the addition of cells, and intrusive growth. We recorded, for the first time, the occurrence of intrusive growth associated with articulated anastomosing laticifers in a member of Apocynaceae. Our findings highlight the importance of detailed anatomical analysis to properly classify laticifers and to access their origin and development. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-01 2018-12-11T17:28:18Z 2018-12-11T17:28:18Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1086/685446 International Journal of Plant Sciences, v. 177, n. 5, p. 458-467, 2016. 1058-5893 http://hdl.handle.net/11449/178031 10.1086/685446 2-s2.0-84969253447 2-s2.0-84969253447.pdf |
url |
http://dx.doi.org/10.1086/685446 http://hdl.handle.net/11449/178031 |
identifier_str_mv |
International Journal of Plant Sciences, v. 177, n. 5, p. 458-467, 2016. 1058-5893 10.1086/685446 2-s2.0-84969253447 2-s2.0-84969253447.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Plant Sciences 0,798 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
458-467 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129281641938944 |