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ALVES,EDENISE SEGALA; GIUSTI,PAULA MATTOS; DOMINGOS,MARISA; SALDIVA,PAULO H.N.; GUIMARÃES,ELIANE T.; LOBO,DÉBORA J.A.. |
Estudos epidemiológicos mostram uma relação entre a poluição aérea em centros urbanos e a taxa de doenças respiratórias na sua população. Em São Paulo, a concentração dos principais poluentes aéreos é monitorada pela CETESB porém, tais dados não dão idéia do risco ao qual a população está sujeita; plantas bioindicadoras podem dar idéia deste risco. O clone híbrido 4430 de Tradescantia vem sendo utilizado em bioensaios (Trad-MCN, Trad-SH) que avaliam o efeito genotóxico de várias substâncias. Não há registros das potencialidades de bioindicação relativas à estrutura das folhas do clone. Este estudo objetivou estabelecer o padrão estrutural da folha do clone e verificar se existem características anatômicas afetadas pela poluição, que podem ser utilizadas... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Urban air pollution; Tradescantia; Clone 4430; Leaf anatomy; Biomonitoring. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000500012 |
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Novoa,María C; Arambarri,Ana M. |
In this paper we examine the leaf-blade anatomy of: Commelina erecta L. var. erecta f. erecta, Tradescantia fluminensis Vell., Tripogandra diuretica (Mart.) Handlos, and T. glandulosa (Seub.) Rohweder. These species grow in the coastal region of the Río de la Plata (Argentina) where they are used as ophthalmic, diuretic, antirheumatic, sudorific, and digestive. The aim of this study was to establish diagnostic features in order to deepen knowledge of these medicinal species and thus, get a valuable tool to establish their botanical identity. The leaves were prepared according to usual methods for light and scanning electron microscopes. Histochemical techniques to identify starch, lipophilic substances, mucilage, tannins, and oxalate salts were performed.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Commelina; Leaf-blade; Medicinal plant; Tradescantia; Tripogandra. |
Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000300002 |
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Ferreira,Maria Izildinha; Rodrigues,Geraldo Stachetti; Domingos,Marisa; Saldiva,Paulo Hilário do N.. |
The Tradescantia stamen hair mutation assay (Trad-SHM) was employed for assessing the environmental mutagenesis in two areas of São Paulo City. The study sites were defined as follows: 1) Celso Garcia Avenue, an industrial area on the outskirts of the urban center (Belém neighborhood), with an average daily traffic volume of 8,750 vehicles; 2) Doutor Arnaldo Avenue, in downtown area (Pinheiros neighborhood), with a mostly residential and business offices occupation, with an average daily traffic volume of 46,125 vehicles. The negative control (background) site is located in the city of Jaguariúna, 138 km from São Paulo, in an area of low atmospheric pollution. The mutation frequency observed for Belém was similar to the background for clone 4430, whereas... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pollution; Mutagenesis; Bioassay; Tradescantia. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200017 |
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Suyama,F.; Guimarães,E.T.; Lobo,D.-J.A.; Rodrigues,G.S.; Domingos,M.; Alves,E.S.; Carvalho,H.A.; Saldiva,P.H.N.. |
The Tradescantia micronucleus test is a sensitive bioassay for mutagenesis that may be employed both under field and laboratory conditions. This test has been standardized mostly on the basis of the results obtained with clone 4430. However, this clone is not well adapted to tropical weather, frequently showing problems with growth and flowering. In addition, it is attacked by parasites and insects, a fact that limits its use in field studies aiming at the biomonitoring of air pollution. In the city of São Paulo, Tradescantia pallida (Rose) Hunt. var. purpurea Boom is widely distributed as an ornamental plant in gardens and along roadsides and streets, mostly because of its natural resistance and its easy propagation. In this report, we present... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Tradescantia; Micronucleus; Environmental mutagenesis; Clastogenesis; X-Radiation; Pollution biomonitoring. |
Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000100018 |
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