Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1139/cjb-2018-0220 http://hdl.handle.net/11449/199464 |
Resumo: | Gelatinous fibers (G-layer) occur widely in various organs and plant tissues of both primary and secondary origin, but they are best known in tension wood. Here, we describe the occurrence, distribution patterns, and structural features of G-fibers in non-woody species of xerophytes and hydrophytes in Brazilian Cerrado (dry soil) and Chaco (wet or periodically waterlogged soils). G-fibers were present in all of the studied species, but were more abundant and more developed in xerophytes. They were associated with the phloem of leaves and primary stems and with the xylem of three xerophytic species that exhibited incipient secondary growth. The G-layer was non-lignified and characterized by greater thickness, lower density, and loose appearance in relation to the secondary layers. Under a transmission electron microscope, G-fibers displayed two secondary parietal layers (S1 and S2) in Prosopis rubriflora Hassle. (xerophyte), three secondary layers (S1, S2, and S3) in Eriosema campestre Benth. var. campestre (xerophyte), and a single secondary layer (S1) in Ludwigia leptocarpa Nutt. (hydrophyte). In P. rubriflora, mature G-fibers exhibited a loose-appearing electron-lucent region (transition zone) between G-and S-layers (secondary layers). In addition to mechanical support, this study suggests the involvement of G-fibers in water storage. |
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Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic speciesAnatomyCerradoChacoG-layerUltrastructureGelatinous fibers (G-layer) occur widely in various organs and plant tissues of both primary and secondary origin, but they are best known in tension wood. Here, we describe the occurrence, distribution patterns, and structural features of G-fibers in non-woody species of xerophytes and hydrophytes in Brazilian Cerrado (dry soil) and Chaco (wet or periodically waterlogged soils). G-fibers were present in all of the studied species, but were more abundant and more developed in xerophytes. They were associated with the phloem of leaves and primary stems and with the xylem of three xerophytic species that exhibited incipient secondary growth. The G-layer was non-lignified and characterized by greater thickness, lower density, and loose appearance in relation to the secondary layers. Under a transmission electron microscope, G-fibers displayed two secondary parietal layers (S1 and S2) in Prosopis rubriflora Hassle. (xerophyte), three secondary layers (S1, S2, and S3) in Eriosema campestre Benth. var. campestre (xerophyte), and a single secondary layer (S1) in Ludwigia leptocarpa Nutt. (hydrophyte). In P. rubriflora, mature G-fibers exhibited a loose-appearing electron-lucent region (transition zone) between G-and S-layers (secondary layers). In addition to mechanical support, this study suggests the involvement of G-fibers in water storage.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Ministério da Ciência e TecnologiaUniversidade Estadual PaulistaFederal University of Mato Grosso do Sul – UFMS Center of Biological and Health SciencesSão Paulo State University – UNESP Institute of Biosciences Department of Botany and Centro de Microscopia EletrônicaUNESP – Universidade Estadual Paulista Instituto de Biociências (Campus de Botucatu) Departamento de Botânica, R. Prof. Dr. Antônio Celso Wagner Zanin, 250, Bairro: Distrito de Rubião JuniorSão Paulo State University – UNESP Institute of Biosciences Department of Botany and Centro de Microscopia EletrônicaUNESP – Universidade Estadual Paulista Instituto de Biociências (Campus de Botucatu) Departamento de Botânica, R. Prof. Dr. Antônio Celso Wagner Zanin, 250, Bairro: Distrito de Rubião JuniorCNPq: 02657/ 2011-8CAPES: 1386382Ministério da Ciência e Tecnologia: 470649/2008-9Universidade Federal de Mato Grosso do Sul (UFMS)Universidade Estadual Paulista (Unesp)Piva, Tayeme Cristina [UNESP]Machado, Silvia Rodrigues [UNESP]Scremin-Dias, Edna2020-12-12T01:40:36Z2020-12-12T01:40:36Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article529-536http://dx.doi.org/10.1139/cjb-2018-0220Botany, v. 97, n. 10, p. 529-536, 2019.1916-2804http://hdl.handle.net/11449/19946410.1139/cjb-2018-02202-s2.0-85072949707Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBotanyinfo:eu-repo/semantics/openAccess2024-04-11T19:33:51Zoai:repositorio.unesp.br:11449/199464Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:32:10.573450Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species |
title |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species |
spellingShingle |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species Piva, Tayeme Cristina [UNESP] Anatomy Cerrado Chaco G-layer Ultrastructure |
title_short |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species |
title_full |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species |
title_fullStr |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species |
title_full_unstemmed |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species |
title_sort |
Anatomical and ultrastructural studies on gelatinous fibers in the organs of non-woody xerophytic and hydrophytic species |
author |
Piva, Tayeme Cristina [UNESP] |
author_facet |
Piva, Tayeme Cristina [UNESP] Machado, Silvia Rodrigues [UNESP] Scremin-Dias, Edna |
author_role |
author |
author2 |
Machado, Silvia Rodrigues [UNESP] Scremin-Dias, Edna |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Mato Grosso do Sul (UFMS) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Piva, Tayeme Cristina [UNESP] Machado, Silvia Rodrigues [UNESP] Scremin-Dias, Edna |
dc.subject.por.fl_str_mv |
Anatomy Cerrado Chaco G-layer Ultrastructure |
topic |
Anatomy Cerrado Chaco G-layer Ultrastructure |
description |
Gelatinous fibers (G-layer) occur widely in various organs and plant tissues of both primary and secondary origin, but they are best known in tension wood. Here, we describe the occurrence, distribution patterns, and structural features of G-fibers in non-woody species of xerophytes and hydrophytes in Brazilian Cerrado (dry soil) and Chaco (wet or periodically waterlogged soils). G-fibers were present in all of the studied species, but were more abundant and more developed in xerophytes. They were associated with the phloem of leaves and primary stems and with the xylem of three xerophytic species that exhibited incipient secondary growth. The G-layer was non-lignified and characterized by greater thickness, lower density, and loose appearance in relation to the secondary layers. Under a transmission electron microscope, G-fibers displayed two secondary parietal layers (S1 and S2) in Prosopis rubriflora Hassle. (xerophyte), three secondary layers (S1, S2, and S3) in Eriosema campestre Benth. var. campestre (xerophyte), and a single secondary layer (S1) in Ludwigia leptocarpa Nutt. (hydrophyte). In P. rubriflora, mature G-fibers exhibited a loose-appearing electron-lucent region (transition zone) between G-and S-layers (secondary layers). In addition to mechanical support, this study suggests the involvement of G-fibers in water storage. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T01:40:36Z 2020-12-12T01:40:36Z |
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/10.1139/cjb-2018-0220 Botany, v. 97, n. 10, p. 529-536, 2019. 1916-2804 http://hdl.handle.net/11449/199464 10.1139/cjb-2018-0220 2-s2.0-85072949707 |
url |
http://dx.doi.org/10.1139/cjb-2018-0220 http://hdl.handle.net/11449/199464 |
identifier_str_mv |
Botany, v. 97, n. 10, p. 529-536, 2019. 1916-2804 10.1139/cjb-2018-0220 2-s2.0-85072949707 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Botany |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
529-536 |
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 |
|
_version_ |
1808129215646662656 |