The role of the parenchyma sheath and PCD during the development of oil cavities in Pterodon pubescens (Leguminosae-Papilionoideae)

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorRodrigues, Tatiane Maria
dc.creatordos Santos, Daniela Carvalho
dc.creatorMachado, Silvia Rodrigues
dc.date2014-05-20T13:48:37Z
dc.date2016-10-25T17:01:23Z
dc.date2014-05-20T13:48:37Z
dc.date2016-10-25T17:01:23Z
dc.date2011-07-01
dc.date.accessioned2017-04-05T20:59:23Z
dc.date.available2017-04-05T20:59:23Z
dc.identifierComptes Rendus Biologies. Paris: Elsevier France-editions Scientifiques Medicales Elsevier, v. 334, n. 7, p. 535-543, 2011.
dc.identifier1631-0691
dc.identifierhttp://hdl.handle.net/11449/17303
dc.identifierhttp://acervodigital.unesp.br/handle/11449/17303
dc.identifier10.1016/j.crvi.2011.04.005
dc.identifierWOS:000293673300006
dc.identifierhttp://dx.doi.org/10.1016/j.crvi.2011.04.005
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/863813
dc.descriptionPterodon pubescens cavities are constituted by lumen and uniseriated epithelium surrounded by multiseriate parenchyma sheath. We studied the development of secretory cavities, including the role of parenchyma sheath, using light and transmission electron microscopy. A Tunel assay was performed to verify whether programmed cell death (PCD) occurs during the process. The lumen is formed by schizogeny and lysigeny occur in later developmental stages of the secretory cavities. Ultrastructurally, epithelial cells in later developmental stages become dark and with sinuous walls: the protoplast becomes retracted and the cytoplasm shows low organelle definition. Degenerated cells are released toward the lumen. Our results showed that PCD occurs during later developmental stages of cavities and plays a critical role in functioning of these glands. New cells originated from the parenchyma sheath differentiate into secretory cells and replace those degenerated ones. This fact associated to PCD guarantees epithelium renovation during the secretory cycle and the maintenance of secretory activity of cavities. (C) 2011 Acadamie des sciences. Published by Elsevier Masson SAS. All rights reserved.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.publisherElsevier France-editions Scientifiques Medicales Elsevier
dc.relationComptes Rendus: Biologies
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEpithelium renovation
dc.subjectOil cavity
dc.subjectParenchyma sheath
dc.subjectProgrammed cell death
dc.subjectPterodon pubescens
dc.titleThe role of the parenchyma sheath and PCD during the development of oil cavities in Pterodon pubescens (Leguminosae-Papilionoideae)
dc.typeOtro


Este ítem pertenece a la siguiente institución