8 documents found, page 1 of 1
The vulnerability of indigenous populations: Water quality consumed by the Maxa...
Assis,Eliseu Miranda de; Santos,Emanuelle Marinho; Faria,Márcia Cristina da Silva; Rodrigues,Jairo Lisboa; Garcez,Anderson; Bomfeti,Cleide AparecidaAbstract Distributed in four villages with approximately 1800 individuals, the Maxakali people have the second largest indigenous population in the state of Minas Gerais, Brazil. This community’s water quality is usually evaluated according to its palatability, and whether it meets certain visual criteria. Thus, a descriptive study was carried out including samples of surface and groundwater consumed in four vi...
High concentrations of toxic metals in water consumed by the Maxakali indigenou...
Assis,Eliseu Miranda de; Souza,Maicon Junior dos Santos; Faria,Márcia Cristina da Silva; Rodrigues,Jairo Lisboa; Garcez,AndersonAbstract The Maxakali is the second largest indigenous population in the state of Minas Gerais, Brazil; and parasitic diseases are its main cause of death. Problems related to the quality of water consumed by this population, added to the absence of public sanitation services, aggravate the risk of illnesses due to several water-borne pathologies. Thus, the main purpose of this paper was to evaluate the water q...
The degradation of methylene blue dye by the strains of Pleurotus sp. with pote...
Maas,Adriele Santos Van Der; Silva,Nazareth Jordelina Ribeiro da; Costa,Alexandre Sylvio Vieira da; Barros,Aruana Rocha; Bomfeti,Cleide AparecidaAbstract Fungi have a large capacity to produce enzymes that are capable of degrading compounds. In this regard, soluble dyes are often used as a means of evaluating and selecting strains with potential for biodegradation. This study verified the capacity of the strains of Pleurotus sp. in degrading methylene blue dye, in order to identify the strains with potential for the bioremediation. For this reason, a to...
Cupriavidus necator strains: zinc and cadmium tolerance and bioaccumulation
Ferreira,Paulo Ademar Avelar; Bomfeti,Cleide Aparecida; Soares,Cláudio Roberto Fonsêca de Souza; Soares,Bruno Lima; Moreira,Fatima Maria de SouzaABSTRACT: Among soil microorganisms, the genus Cupriavidus has garnered particular scientific, economic and ecological interest because of its ability to fix nitrogen and tolerate high concentrations of metals. The aim of this study was to analyze four strains of Cupriavidus necator for their ability to tolerate and bioaccumulate cadmium and zinc. The tolerance of these strains to these metals was assessed in l...
Novel insights into the early stages of infection by oval conidia of Colletotri...
Souza-Paccola,Ednéia Aparecida de; Bomfeti,Cleide Aparecida; Tanaka,Francisco André Ossamu; Massola Junior,Nelson Sidnei; Colauto,Nelson BarrosAnthracnose, caused by Colletotrichum sublineolum Henn. ex Sacc. & Trotter, is one of the most important sorghum [Sorghum bicolor (L.) Moench] diseases in Brazil. This fungus exhibits conidial dimorphism, producing either falcate or oval conidia on solid and liquid media, respectively. We compared patterns of the initial infection events by these two types of conidia on sorghum leaves using light microscopy and...
Eficiência simbiótica de estirpes de Cupriavidus necator tolerantes a zinco, cá...
Ferreira,Paulo Ademar Avelar; Bomfeti,Cleide Aparecida; Silva Júnior,Romildo da; Soares,Bruno Lima; Soares,Cláudio Roberto Fonseca SousaO objetivo deste trabalho foi avaliar a tolerância de estirpes de Cupriavidus necator a zinco, cádmio, cobre e chumbo, além de determinar a eficiência simbiótica das estirpes mais tolerantes em associação a espécies leguminosas com potencial para revegetação. A tolerância foi testada em meio LB, suplementado com 2,5; 5,0; 7,5; 10; 12,5 e 15 mmol L-1 de ZnSO4.7H2O, CdSO4.8H2O, CuSO4.5H2O e PbCl2, respectivamente...
Exopolysaccharides produced by the symbiotic nitrogen-fixing bacteria of legumi...
Bomfeti,Cleide Aparecida; Florentino,Ligiane Aparecida; Guimarães,Ana Paula; Cardoso,Patrícia Gomes; Guerreiro,Mário CésarThe process of biological nitrogen fixation (BNF), performed by symbiotic nitrogen fixing bacteria with legume species, commonly known as α and β rhizobia, provides high sustainability for the ecosystems. Its management as a biotechnology is well succeeded for improving crop yields. A remarkable example of this success is the inoculation of Brazilian soybeans with Bradyrhizobium strains. Rhizobia produce a wide...
Avaliação de produtos químicos comerciais, in vitro e in vivo, no controle da d...
Bomfeti,Cleide Aparecida; Meirelles,Walter Fernandes; Souza-Paccola,Edneia Aparecida; Casela,Carlos Roberto; Ferreira,Alexandre da SilvaUma bactéria identificada como Pantoea ananatis foi recentemente isolada de lesões jovens da doença mancha branca do milho de plantas naturalmente infectadas. Esta bateria reproduziu sintomas semelhantes aos da doença quando inoculada em plantas de milho em casa de vegetação. Estudos anteriores realizados por outros autores demonstraram que o controle desta doença em condições de campo foi obtido pelo uso de fu...