Occurrence of secretory structures in underground systems of seven Asteraceae species


Autoria(s): APPEZZATO-DA-GLORIA, Beatriz; HAYASHI, Adriana H.; CURY, Graziela; SOARES, Marli K. M.; ROCHA, Roseli
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

18/10/2012

18/10/2012

2008

Resumo

In contrast with the abundance of anatomical studies of secretory structures on aerial vegetative organs of Asteraceae species, the information about secretory structures on thickened subterranean organs is sparse. The aim of this study was to investigate the occurrence of secretory structures on thickened and nonthickened subterranean organs of seven Asteraceae species from three tribes: Eupatorieae (Chromolaena squalida and Gyptis lanigera), Vernonieae (Chresta sphaerocephala, Lessingianthus bardanoides, L. glabratus and Orthopappus angustifolius), and Plucheeae (Pterocaulon angustifolium). The specimens were collected in areas of cerrado, from the State of Sao Paulo, Brazil. All species of the tribe Vernonieae studied exhibited endodermic cells, other than the epithelial cells of the canal, with secretory activity in the roots. In C. sphaerocephala roots, two types of endodermic cell were found, but only one had secretory activity. Secretory canals were found in the tuberous and nontuberous roots of all studied species. These data agree with the results from the literature for Asteraceae species. Here, we describe for the first time in Asteraceae the presence of secretory idioblasts in C. sphaerocephala. Secretory trichomes are present in the Orthopappus angustifolius rhizophore. Histochemical tests have shown that all types of secretory structure possess substances containing lipids. (C) 2008 The Linnean Society of London.

FAPESP Fundacao de Amparo a Pesquisa do Estado de Sao Paulo TAPESP)[00/12469-3]

Coordenacao de Aperfeicoa-mento de Pessoal de Nivel Superior (CAPES)

Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)

Identificador

BOTANICAL JOURNAL OF THE LINNEAN SOCIETY, v.157, n.4, p.789-796, 2008

0024-4074

http://producao.usp.br/handle/BDPI/18907

10.1111/j.1095-8339.2008.00823.x

http://dx.doi.org/10.1111/j.1095-8339.2008.00823.x

Idioma(s)

eng

Publicador

BLACKWELL PUBLISHING

Relação

Botanical Journal of the Linnean Society

Direitos

restrictedAccess

Copyright BLACKWELL PUBLISHING

Palavras-Chave #canals #Compositae #idioblasts #light microscopy #lipid substances #roots #secretion #secretory endoderm #trichomes #xylopodium #GLANDULAR TRICHOMES #VEGETATIVE ORGANS #ANATOMY #HISTOCHEMISTRY #ULTRASTRUCTURE #COMPOSITAE #MORPHOLOGY #ONTOGENY #DENSITY #Plant Sciences
Tipo

article

original article

publishedVersion