EFFECT OF PURPLE LETTUCE AQUEOUS EXTRACT IN CYTOGENETICS ACTIVITY OF LETTUCE ROOT UNDER SALT STRESS

Autores

DOI:

https://doi.org/10.31512/vivencias.v16i31.218

Resumo

Salinity can affect cell division and cause chromosomal abnormalities such as the formation of micronuclei, chromosome stickiness, c-mitosis and multipolar anaphases. Plants react to salt stress with morphological, biochemical, physiological, cellular and molecular adjustments. The aim of this study was to evaluate the effect of different leaf extract concentrations of purple lettuce on the cytogenetic activity of lettuce roots, cv. Regina, from seeds subjected to salt stress. Four extract concentrations of purple lettuce (0, 50, 100 and 150 g lettuce leaves L-1 water)and five concentrations of sodium chloride (0, 30, 60, 90 and 120 mM) were tested, constituting 20 treatments, with distilled water for a negative control. The analyses were of mitotic index (MI), phase index of mitosis (prophase, metaphase, anaphase and telophase) and the presence of chromosomal aberrations. Salt reduces the mitotic index and all index phases of the lettuce roots. The purple lettuce extract does not affect the mitotic index, reduces the cell index in prophase and increases the cells in telophase of lettuce roots. The purple lettuce extract and salt cause chromosomal abnormalities in lettuce root cells; however, a smaller number of mutations is found by applying 100 g L-1 extract.

Biografia do Autor

Cristiane Deuner, Universidade Federal de Pelotas, Pelotas, RS, Brasil

Program in Science and Seed Technology, Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas,Pelotas, Rio Grande do Sul, Brazil

Alison Munhos, Universidade Federal de Pelotas, Pelotas, RS, Brasil

Department of Ecology, Zoology and Genetics, Biology Institute, Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil

Vera Lúcia Bobrowski, Universidade Federal de Pelotas, Pelotas, RS, Brasil

Department of Ecology, Zoology and Genetics, Biology Institute, Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil

Sidnei Deuner, Universidade Federal de Pelotas, Pelotas, RS, Brasil

Department of Botany, Biology Institute, Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil

Andréia da Silva Almeida, Universidade Federal de Pelotas, Pelotas, RS, Brasil

Program in Science and Seed Technology, Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas,Pelotas, Rio Grande do Sul, Brazil

Geri Eduardo Meneghello, Universidade Federal de Pelotas, Pelotas, RS, Brasil

Program in Science and Seed Technology, Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas,Pelotas, Rio Grande do Sul, Brazil

Publicado

2020-06-29

Como Citar

Deuner, C., Munhos, A., Bobrowski, V. L., Deuner, S., Almeida, A. da S., & Meneghello, G. E. (2020). EFFECT OF PURPLE LETTUCE AQUEOUS EXTRACT IN CYTOGENETICS ACTIVITY OF LETTUCE ROOT UNDER SALT STRESS. Vivências, 16(31), 123-136. https://doi.org/10.31512/vivencias.v16i31.218

Edição

Seção

ARTIGOS DE FLUXO CONTÍNUO