Thallus structure and isidium development in two Parmeliaceae species (lichenized Ascomycota)

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dc.contributor.authorBarbosa, Suzana Bissacot [UNESP]
dc.contributor.authorMachado, Silvia Rodrigues [UNESP]
dc.contributor.authorMarcelli, Marcelo Pinto
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInst Bot
dc.date.accessioned2014-05-20T13:48:39Z
dc.date.available2014-05-20T13:48:39Z
dc.date.issued2009-07-01
dc.description.abstract(Thallus structure and isidium development in two Parmeliaceae species (lichenized Ascomycota)). Conventional techniques for structural studies under light microscope and scanning electron microscope were employed to describe and compare the histology of thallus and isidia development in Parmotrema tinctorum and Parmelinopsis minarum. Although presenting layers typical of the heteromerous structure of Parmeliaceae lichens, the studied species have very distinct anatomical details including: the type of upper cortex, medulla thickness, hyphal orientation pattern and distinct strata in this layer, variations of crystal shape, color, location and degree of association with medullary hyphae, rhizines thickness and covering by a cortical layer. Isidium formation starts with cortical cell proliferation, which results in a small protuberance on the thallus surface, followed by the photobiont cell proliferation. Medullary hyphal intrusions occur only after the formation of this protuberance. In this stage medullary hyphae grow, ramifying or not inside the protuberance. In a posterior stage, the isidium base becomes constricted, which facilitates its detachment from the thallus. (C) 2009 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationInst Bot, Secao Micol & Liquenol, BR-01061970 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-18618000 Botucatu, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 00/12469-3
dc.format.extent536-542
dc.identifierhttp://dx.doi.org/10.1016/j.micron.2009.04.004
dc.identifier.citationMicron. Oxford: Pergamon-Elsevier B.V. Ltd, v. 40, n. 5-6, p. 536-542, 2009.
dc.identifier.doi10.1016/j.micron.2009.04.004
dc.identifier.issn0968-4328
dc.identifier.lattes2653496390637757
dc.identifier.urihttp://hdl.handle.net/11449/17321
dc.identifier.wosWOS:000267515800004
dc.language.isoeng
dc.publisherPergamon-Elsevier B.V. Ltd
dc.relation.ispartofMicron
dc.relation.ispartofjcr1.728
dc.relation.ispartofsjr0,624
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAnatomyen
dc.subjectIsidiaen
dc.subjectOntogenyen
dc.subjectParmotrema tinctorumen
dc.subjectParmelinopsis minarumen
dc.titleThallus structure and isidium development in two Parmeliaceae species (lichenized Ascomycota)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderPergamon-Elsevier B.V. Ltd
unesp.author.lattes2653496390637757
unesp.author.orcid0000-0002-0065-1933[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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