Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://iawa-website.org/IAWA%20J%20pdf's/29.no.1-4.2008/%20%2069-77.pdf http://hdl.handle.net/11449/17354 |
Resumo: | The origin and structure are described of the secondary protective tissue in the stem of Erythorxylum tortuosum Mart., a fire tolerant shrubby species common in Brazilian cerrado. The highly tortuous stems are covered with thick bark which is more developed at the base of the stem. After fire in the cerrado, rhytidome fragments of the burned stem flake off, revealing newly formed cork. The first periderm appears near of the terminal buds and is iniated by periclinal divisions in subepidermal cells giving rise to radial rows of cells. The first phellogen is discernible only after the differentiation of the several radial rows of cork cells. Other phellogens have their origin in successively deeper layers of the cortex. The sucessive periderms are discontinuous around the circumference. The collapsed cells with phenolic substances and the accumulated dead cells cause the formation of discontinuous blackish lines, which delimit the sucessive periderms in the rhytidome. The rhytidome contains large quantities of sclereids developed from cell wall thickening of cortex cells. The occurrence of periderm, in the young parts of the stem and of rhytidome in the older parts represents pyrophytic characteristics and may explain, in part, the fire tolerance of this species. |
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Repositório Institucional da UNESP |
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spelling |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerradobarkcerradoErythroxylum tortuosumfire tolerant speciesperidermrhytidomestemThe origin and structure are described of the secondary protective tissue in the stem of Erythorxylum tortuosum Mart., a fire tolerant shrubby species common in Brazilian cerrado. The highly tortuous stems are covered with thick bark which is more developed at the base of the stem. After fire in the cerrado, rhytidome fragments of the burned stem flake off, revealing newly formed cork. The first periderm appears near of the terminal buds and is iniated by periclinal divisions in subepidermal cells giving rise to radial rows of cells. The first phellogen is discernible only after the differentiation of the several radial rows of cork cells. Other phellogens have their origin in successively deeper layers of the cortex. The sucessive periderms are discontinuous around the circumference. The collapsed cells with phenolic substances and the accumulated dead cells cause the formation of discontinuous blackish lines, which delimit the sucessive periderms in the rhytidome. The rhytidome contains large quantities of sclereids developed from cell wall thickening of cortex cells. The occurrence of periderm, in the young parts of the stem and of rhytidome in the older parts represents pyrophytic characteristics and may explain, in part, the fire tolerance of this species.Univ Estadual Paulista, Dept Bot, BR-18618000 Botucatu, SP, BrazilUniv Estadual Paulista, Dept Bot, BR-18618000 Botucatu, SP, BrazilInt Assoc Wood AnatomistsUniversidade Estadual Paulista (Unesp)Alonso, Alexandre Antonio [UNESP]Machado, Silvia Rodrigues [UNESP]2014-05-20T13:48:44Z2014-05-20T13:48:44Z2008-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article69-77http://iawa-website.org/IAWA%20J%20pdf's/29.no.1-4.2008/%20%2069-77.pdfIawa Journal. Leiden: Int Assoc Wood Anatomists, v. 29, n. 1, p. 69-77, 2008.0928-1541http://hdl.handle.net/11449/17354WOS:0002535440000072653496390637757Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIawa Journal1.9030,771info:eu-repo/semantics/openAccess2021-10-22T18:27:24Zoai:repositorio.unesp.br:11449/17354Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:04:42.615929Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado |
title |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado |
spellingShingle |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado Alonso, Alexandre Antonio [UNESP] bark cerrado Erythroxylum tortuosum fire tolerant species periderm rhytidome stem |
title_short |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado |
title_full |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado |
title_fullStr |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado |
title_full_unstemmed |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado |
title_sort |
Stem protective tissue in Erythroxylum tortuosum (Erythroxylaceae), a fire tolerant species from cerrado |
author |
Alonso, Alexandre Antonio [UNESP] |
author_facet |
Alonso, Alexandre Antonio [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 |
Alonso, Alexandre Antonio [UNESP] Machado, Silvia Rodrigues [UNESP] |
dc.subject.por.fl_str_mv |
bark cerrado Erythroxylum tortuosum fire tolerant species periderm rhytidome stem |
topic |
bark cerrado Erythroxylum tortuosum fire tolerant species periderm rhytidome stem |
description |
The origin and structure are described of the secondary protective tissue in the stem of Erythorxylum tortuosum Mart., a fire tolerant shrubby species common in Brazilian cerrado. The highly tortuous stems are covered with thick bark which is more developed at the base of the stem. After fire in the cerrado, rhytidome fragments of the burned stem flake off, revealing newly formed cork. The first periderm appears near of the terminal buds and is iniated by periclinal divisions in subepidermal cells giving rise to radial rows of cells. The first phellogen is discernible only after the differentiation of the several radial rows of cork cells. Other phellogens have their origin in successively deeper layers of the cortex. The sucessive periderms are discontinuous around the circumference. The collapsed cells with phenolic substances and the accumulated dead cells cause the formation of discontinuous blackish lines, which delimit the sucessive periderms in the rhytidome. The rhytidome contains large quantities of sclereids developed from cell wall thickening of cortex cells. The occurrence of periderm, in the young parts of the stem and of rhytidome in the older parts represents pyrophytic characteristics and may explain, in part, the fire tolerance of this species. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 2014-05-20T13:48:44Z 2014-05-20T13:48:44Z |
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://iawa-website.org/IAWA%20J%20pdf's/29.no.1-4.2008/%20%2069-77.pdf Iawa Journal. Leiden: Int Assoc Wood Anatomists, v. 29, n. 1, p. 69-77, 2008. 0928-1541 http://hdl.handle.net/11449/17354 WOS:000253544000007 2653496390637757 |
url |
http://iawa-website.org/IAWA%20J%20pdf's/29.no.1-4.2008/%20%2069-77.pdf http://hdl.handle.net/11449/17354 |
identifier_str_mv |
Iawa Journal. Leiden: Int Assoc Wood Anatomists, v. 29, n. 1, p. 69-77, 2008. 0928-1541 WOS:000253544000007 2653496390637757 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Iawa Journal 1.903 0,771 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
69-77 |
dc.publisher.none.fl_str_mv |
Int Assoc Wood Anatomists |
publisher.none.fl_str_mv |
Int Assoc Wood Anatomists |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808129390115028992 |