495 research outputs found
Immunoperoxidase technique using an anti-Leishmania (L.) chagasi hyperimmune serum in the diagnosis of culture-confirmed American tegumentary leishmaniasis
A presença de Microlobius foetidus causa alteraçÔess na defesa antioxidante de Urochloa decumbens?
Urochloa decumbens (Stapf) R. D. Webster (Poaceae) is an exotic species with has spread rapidly through the Cerrado area of Pantanal, Mato Grosso do Sul, Brazil. It has covered the soil aggressively turning it into cultivated pastures. Thus, it has become a challenge to protect native areas due its capacity of exclusion of native species. It has been observed that Microlobius foetidus (Jacq.) M.Sousa & G.Andrade species (Fabaceae) shows a dominant pattern over the development of U. decumbens. This work shows that M. foetidus interfere on the natural growth of U. decumbens within 10 m ratio. Between 15 and 20 m, it was observed an increase of Importance Value index (IVI) and Relative cover (RC) values. It was also observed a variation on the antioxidant defense system of U. decumbens within 10m ratio from M. foetidus. The enzymes superoxide dismutase, catalase and peroxidase present higher levels of activity then those found for glutathione reductase. This data indicates that M. foetidus may have an effect on U. decumbens, increase the activity of antioxidant enzymes. This effect probably happens as means to neutralize the toxic effects of the oxygen generated due to the presence of allelochemicals, which increases oxidative stress. © 2015, Instituto Internacional de Ecologia. All Rights Reserved
Turbidimetry as an alternative method to determine the rating curve of suspended sediments
Efeito do tamanho da semente, subtrato ambiente na produção de mudas de Copernicia Hospita Martius
Infestação natural de fĂȘmeas bovinas de corte por ectoparasitas na RegiĂŁo Sudeste do Brasil
Avaliação genética de touros usando produção em lactaçÔes completas ou parciais projetadas: 3. Confiabilidade e ganhos genéticos
Tree and shrub species of the Atlantic Forest on the slopes of Marambaia Island, Rio de Janeiro, Brazil
Adaptabilidade e estabilidade de genótipos eretos de amendoim cultivados nas regiÔes Nordeste e Centro-Oeste
- âŠ