Data/hora: 01/06/2024 00:42:35

Provedor de dados: | 42
País: | Brazil
Título: | Effects of atmospheric pollutants on somatic and germ cells of Tradescantia pallida (Rose) D.R. HUNT cv. purpurea
Autores: | CRISPIM,BRUNO A.; SPÓSITO,JULIANA C.V.; MUSSURY,ROSILDA M.; SENO,LEONARDO O.; GRISOLIA,ALEXÉIA B.
Data: | 2014-12-01
Ano: | 2014
Palavras-chave: | Biomonitoring; Leaf anatomy; Air pollution; Micronuclei.
Resumo: | Anatomical alterations in leaves and DNA damage in cells caused by the accumulation of atmospheric pollutants can be measured by epidermal leaf analyses and Tradescantia micronuclei assay with early pollen tetrad cells. The present study examined the feasibility of using somatic and germ cells of Tradescantia pallida for biomonitoring purposes in the city of Dourados, state of Mato Grosso do Sul (MS), Brazil. Stomatal, micronucleus and epidermal leaf analyses were performed, using standard methodologies, on plants growing at three locations during six different time periods. Tradescantia micronuclei data were analyzed using SAS 9.2 software package and stomatal data were analyzed using SANEST software. Analyses of stomatal characteristics and micronuclei examination in T. pallida were found to be an efficient tool for monitoring atmospheric pollution. The micronucleus assay suggested that the number of micronuclei in early pollen tetrad cells was related to the intensity of vehicular traffic. Increased number of epidermal cells and stomata and increased stomatal density observed at locations with greater vehicular traffic are likely physiological responses of those plants to the increased gas exchange in highly polluted environments.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401899
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201420140338
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.86 n.4 2014
Fonte: | info:eu-repo/semantics/openAccess