9 documents found, page 1 of 1
Environmental and sanitary conditions of guanabara bay, Rio de Janeiro
Fistarol, Giovanna O.; Coutinho, Felipe H.; Moreira, Ana Paula B.; Venas, Tainá; Cánovas, Alba; Paula Junior, Sérgio E. M. de; Coutinho, RicardoGuanabara Bay is the second largest bay in the coast of Brazil, with an area of 384 km2. In its surroundings live circa 16 million inhabitants, out of which 6 million live in Rio de Janeiro city, one of the largest cities of the country, and the host of the 2016 Olympic Games. Anthropogenic interference in Guanabara Bay area started early in the XVI century, but environmental impacts escalated from 1930, when t...
Phylogenetic and functional diversity of metagenomic libraries of phenol degrad...
Silva, Cynthia C.; Hayden, Helen; Sawbridge, Tim; Mele, Pauline; Kruger, Ricardo Henrique; Rodrigues, Marili V. N.; Costa, Gustavo G. L.In petrochemical refinery wastewater treatment plants (WWTP), different concentrations of pollutant compounds are received daily in the influent stream, including significant amounts of phenolic compounds, creating propitious conditions for the development of particular microorganisms that can rapidly adapt to such environment. In the present work, the microbial sludge from a refinery WWTP was enriched for phen...
Exercise induction of gut microbiota modifications in obese, non-obese and hype...
Petriz, Bernardo A.; Castro, Alinne Pereira de; Almeida, Jeeser A.; Gomes, Clarissa P. C.; Fernandes, Gabriel R.; Kruger, Ricardo HenriqueBackground: Obesity is a multifactor disease associated with cardiovascular disorders such as hypertension. Recently, gut microbiota was linked to obesity pathogenesisand shown to influence the host metabolism. Moreover, several factors such as host-genotype and life-style have been shown to modulate gut microbiota composition. Exercise is a well-known agent used for the treatment of numerous pathologies, such ...
Seasonal effects in a lake sediment archaeal community of the brazilian savanna
Rodrigues, Thiago; Catão, Elisa Caldeira Pires; Bustamante, Mercedes Maria da Cunha; Quirino, Betânia Ferraz; Kruger, Ricardo HenriqueThe Cerrado is a biome that corresponds to 24% of Brazil’s territory. Only recently microbial communities of this biome have been investigated. Here we describe for the first time the diversity of archaeal communities from freshwater lake sediments of the Cerrado in the dry season and in the transition period between the dry and rainy seasons, when the first rains occur. Gene libraries were constructed, using A...
Soil acidobacterial 16S rRNA gene sequences reveal subgroup level differences b...
Catão, Elisa Caldeira Pires; Lopes, Fabyano Alvares Cardoso; Araújo, Janaína Fernandes de; Castro, Alinne Pereira de; Barreto, Cristiane Chaves16S rRNA sequences from the phylum Acidobacteria have been commonly reported from soil microbial communities, including those from the Brazilian Savanna (Cerrado) and the Atlantic Forest biomes, two biomes that present contrasting characteristics of soil and vegetation. Using 16S rRNA sequences, the present work aimed to study acidobacterial diversity and distribution in soils of Cerrado savanna and two Atlanti...
Diversity and antimicrobial potential of culturable heterotrophic bacteria asso...
Rua, Cintia P. J.; Trindade-Silva, Amaro E.; Appolinario, Luciana R.; Venas, Tainá M.; Garcia, Gizele D.; Carvalho, Lucas S.; Lima, AlinneMarine sponges are the oldest Metazoa, very often presenting a complex microbial consortium. Such is the case of the marine sponge Arenosclera brasiliensis, endemic to Rio de Janeiro State, Brazil. In this investigation we characterized the diversity of some of the culturable heterotrophic bacteria living in association with A. brasiliensis and determined their antimicrobial activity. The genera Endozoicomonas ...
Microbial diversity in cerrado biome (neotropical savanna) soils
Castro, Alinne Pereira de; Silva, Maria Regina Silveira Sartori da; Quirino, Betânia Ferraz; Bustamante, Mercedes Maria da CunhaThe Cerrado, the largest savanna region in South America, is located in central Brazil. Cerrado physiognomies, which range from savanna grasslands to forest formations, combined with the highly weathered, acidic clay Cerrado soils form a unique ecoregion. In this study, high-throughput sequencing of ribosomal RNA genes was combined with shotgun metagenomic analysis to explore the taxonomic composition and poten...
Archaeal community changes associated with cultivation of Amazon Forest soil wi...
Tupinambá, Daiva Domenech; Cantão, Maurício Egídio; Costa, Ohana Yonara Assis; Bergmann, Jessica Carvalho; Kruger, Ricardo Henrique; Kyaw, Cynthia MariaThis study compared soil archaeal communities of the Amazon forest with that of an adjacent area under oil palm cultivation by 16S ribosomal RNA gene pyrosequencing. Species richness and diversity were greater in native forest soil than in the oil palm-cultivated area, and 130 OTUs (13.7%) were shared between these areas. Among the classified sequences, Thaumarchaeota were predominant in the native forest, wher...
Microbial community profile and water quality in a protected area of the caatin...
Lopes, Fabyano Alvares Cardoso; Catão, Elisa Caldeira Pires; Santana, Renata Henrique; Cabral, Anderson de Souza; Paranhos, RodolfoThe Caatinga is a semi-arid biome in northeast Brazil. The Paraguaçú River is located in the Caatinga biome, and part of its course is protected by the National Park of Chapada Diamantina (PNCD). In this study we evaluated the effect of PNCD protection on the water quality and microbial community diversity of this river by analyzing water samples obtained from points located inside and outside the PNCD in both ...