94 documents found, page 1 of 10
The Overexpression of an EnvZ-like Protein Improves the Symbiotic Performance o...
da-Silva, José Rodrigo; Menéndez, Esther; Oliveira, Solange; Alexandre, AnaThe two-component signal transduction system EnvZ/OmpR is described to mediate response to osmotic stress, although it regulates genes involved in other processes such as virulence, fatty acid uptake, exopolysaccharide production, peptide transportation, and flagella production. Considering that some of these processes are known to be important for a successful symbiosis, the present study addresses the effects...
Evaluation of Phenolic Compounds, Antioxidant Activity and Bioaccessibility in ...
Guiné, Raquel P. F.; Gonçalves, Fernando Jorge; Oliveira, Solange; Correia, PaulaThis work evaluated phenolic compounds in Physalis peruviana as well as their antioxidant activity and bioaccessibility, using an in vitro model of the gastrointestinal system. Three combinations of solvents were evaluated for the extraction of phenolic com- pounds. All other chemical components, their antioxidant activity and bioaccessibility were evaluated using established methods. P. peruviana is rich in fi...
First isolation and genotyping of Toxoplasma gondii in a free-living giant ante...
Pena, Hilda Fátima Jesus; Ferrari, Vinícius Matheus [UNESP]; Aires, Luiz Paulo Nogueira; Soares, Herbert Sousa; Oliveira, Solange; Alves, Bruna FariasMade available in DSpace on 2020-12-12T02:24:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-04-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); The protozoan parasite Toxoplasma gondii can infect virtually all warm-blooded animals worldwide but little is known of its infection in the endangered giant anteaters (Myr...
Diversity and Functionality of Culturable Endophytic Bacterial Communities in C...
Brigido, Clarisse; Singh, Sakshi; Menéndez, Esther; Tavares, Maria; Félix, M.-R.; Oliveira, Solange; Carvalho, MárioThe aims of this study were to isolate, identify and characterize culturable endophytic bacteria from chickpea (Cicer arietinum L.) roots grown in different soils. In addition, the effects of rhizobial inoculation, soil and stress on the functionality of those culturable endophytic bacterial communities were also investigated. Phylogenetic analysis based on partial 16S rRNA gene sequences revealed that the endo...
Mediterranean Native Leguminous Plants: A Reservoir of Endophytic Bacteria with...
Brigido, Clarisse; Mendez, Esther; Paço, Ana; Glick, Bernard; Belo, A.D.F.; Félix, Maria do Rosário; Oliveira, Solange; Carvalho, MárioBacterial endophytes, a subset of a plant’s microbiota, can facilitate plant growth by a number of different mechanisms. The aims of this study were to assess the diversity and functionality of endophytic bacterial strains from internal root tissues of native legume species grown in two distinct sites in South of Portugal and to evaluate their ability to promote plant growth. Here, 122 endophytic bacterial isol...
DNA Barcoding and Morphological Identification of Benthic Nematodes Assemblages...
Avó, Ana Patrícia; Daniell, Tim; Neilson, Roy; Oliveira, Solange; Branco, Jordana; Adão, HelenaConcerns regarding the status of marine ecosystems have increased in part due to traditional and emerging human activities in marine waters, driving a demand for approaches with high sample throughput capability to improve ecosystem monitoring. Nematodes are already used as indicator species in biodiversity assessments and biomonitoring of terrestrial and marine systems, with molecular approaches offering the o...
Ocorrências de anticorpos anti-Toxoplasma gondii, Neospora spp. e Sarcocystis n...
Oliveira, Solange; Silva, Natalia Quadros Bessa; Silveira, Iara; Labruna, Marcelo Bahia; Gennari, Solange Maria; PENA, Hilda Fátima JesusSerum samples from 116 horses and 47 dogs from the municipality of Paulicéia, in the state of São Paulo, Brazil, were examined for anti-Toxoplasma gondii, -Neospora spp. and -Sarcocystis neurona antibodies by means of the indirect fluorescent antibody test (IFAT). The results showed that only one horse was seropositive for T. gondii (0.9%) and anti-Neospora spp. antibodies were detected in three out of the 116 ...
Analysis of some chemical components, phenolic compounds and antioxidant activi...
Correia, Paula; Guiné, Raquel; Gonçalves, Fernando; Oliveira, SolangePhysalis peruviana L. is appreciated for its organoleptic characteristics, besides being rich in many beneficial compounds. Because its characteristics are yet not fully understood, the present work aimed at studying some of its chemical properties and bioactive phenols and the corresponding antioxidant activity. For obtaining the phenolic extracts three methods with different combinations of extracting solvent...
Development of molecular approaches to assess the diversity and abundance of ma...
Avó, Ana patrícia; Daniell, Tim; Nielson, Roy; Oliveira, Solange; Adão, HelenaIn Europe, the concerns with the status of marine ecosystems have increased, and the Marine Directive has as main goal the achievement of Good Environmental Status (GES) of EU marine waters by 2020. Molecular tools are seen as promising and emerging approaches to improve ecosystem monitoring, and have led ecology into a new era, representing perhaps the most source of innovation in marine monitoring techniques....
Global transcriptional response to salt shock of the plant microsymbiont Mesorh...
Laranjo, Marta; Alexandre, Ana; Oliveira, SolangeSoil salinity affects rhizobia both as free-living bacteria and in symbiosis with the host. The aim of this study was to examine the transcriptional response of the Lotus microsymbiont Mesorhizobium loti MAFF303099 to salt shock. Changes in the transcriptome of bacterial cells subjected to a salt shock of 10% NaCl for 30 min were analyzed. From a total of 7231 protein-coding genes, 385 were found to be differen...