22 documents found, page 1 of 3
Metagenomic analysis of sediments under seaports influence in the Equatorial At...
Tavares, Tallita Cruz Lopes; Normando, Leonardo Ribeiro Oliveira; Vasconcelos, Ana Tereza Ribeiro de; Gerber, Alexandra LehmkuhlMaritime ports are anthropogenic interventions capable of causing serious alterations in coastal ecosystems. In this study, we examined the benthic microbial diversity and community structure under the influence of two maritime ports, Mucuripe (MUC) and Pecém (PEC), at Equatorial Atlantic Ocean in Northeast Brazil. Those seaports differ in architecture, time of functioning, cargo handling and contamination. The...
Symbiodinium diversity associated with zoanthids (Cnidaria: Hexacorallia) in No...
Rabelo, Emanuelle Fontenele; Rocha, Lidianne Leal; Colares, Geórgia Barguil; Bomfim, Tatiana Araújo; Nogueira, Vanessa Lúcia RodriguesSome marine animals have a dynamic mutualistic association involving heterotrophic coral animals (hosts) and autotrophic dinoflagellate endosymbionts in the genus Symbiodinium, known as zooxanthellae, which are directly involved in their physiology. Currently, there is limited knowledge of the Symbiodinium diversity associated with zoanthids from the Brazilian coast. Hence, this study assessed the diversity of ...
Symbiodinium diversity associated with zoanthids (Cnidaria: Hexacorallia) in No...
Rabelo, Emanuelle Fontenele; Rocha, Lidianne Leal; Colares, Geórgia Barguil; Bomfim, Tatiana Araújo; Nogueira, Vanessa Lúcia RodriguesSome marine animals have a dynamic mutualistic association involving heterotrophic coral animals (hosts) and autotrophic dinoflagellate endosymbionts in the genus Symbiodinium, known as zooxanthellae, which are directly involved in their physiology. Currently, there is limited knowledge of the Symbiodinium diversity associated with zoanthids from the Brazilian coast. Hence, this study assessed the diversity of ...
Biosurfactant production by Pseudomonas aeruginosa MSIC02 in cashew apple juice...
Rocha, Maria Valderez Ponte; Mendes, Jocélia de Sousa; Giro, Maria Estela Aparecida; Melo, Vânia Maria Maciel; Gonçalves, Luciana Rocha BarrosIn this work, the production of biosurfactants from cashew apple juice by P. aeruginosa MSIC02 was investigate by carrying out a 24 full factorial experimental design, using temperature, glucose concentration from cashew apple juice, phosphorous concentration and cultivation time as variables. The response variable was the percentage of reduction in surface tension in the cell-free culture medium, since it indi...
Unique crystal structure of a novel surfactant protein from the foam nest of th...
Hissa, Denise Cavalcante; Bezerra, Gustavo Arruda; Birner-Gruenberger, Ruth; Silva, Luciano Paulino; Usón, Isabel; Gruber, KarlBreeding by releasing eggs into stable biofoams ("foam nests") is a peculiar reproduction mode within anurans, fish, and tunicates; not much is known regarding the biochemistry or molecular mechanisms involved. Lv-ranaspumin (Lv-RSN-1) is the predominant protein from the foam nest of the frog Leptodactylus vastus. This protein shows natural surfactant activity, which is assumed to be crucial for stabilizing foa...
Novel surfactant proteins are involved in the structure and stability of foam n...
Hissa, Denise Cavalcante; Vasconcelos, Ilka Maria; Carvalho, Ana Fontenele Urano; Nogueira, Vanessa Lúcia Rodrigues; Cascon, PauloMany amphibians lay their eggs in foam nests, which allow the eggs to be deposited out of the water. Analysis of some of these foam nests has revealed that they are a rich source of proteins with unusual primary structures and remarkable surfactant activity, named ranaspumins. The aim of this work was to study the foam nests of the frog Leptodactylus vastus in order to obtain information regarding their composi...
The relationship between seaweed diet and purple fluid production in Aplysia da...
Bezerra, Luis Ernesto Arruda; Carvalho, Ana de Fátima Fontenele Urano; Barreira, Luciana Aires; Nogueira, Vanessa Lúcia RodriguesAplysia dactylomela is a large marine opisthobranch gastropod, which inhabits shallow tropical shoreline regions, eats red and green algae, and releases a purple ink when disturbed. Many functions have been proposed for this secretion and although there is no consensus on this, some of its constituents are believed to be derived from the red algal diet, it may provide the snail with a substantial survival advan...
Chitosan enhances the antimicrobial photodynamic inactivation mediated by Photo...
de Souza, Cheyenne Marçal [UNESP]; Garcia, Maíra Terra [UNESP]; de Barros, Patrícia Pimentel [UNESP]; Pedroso, Lara Luise Castro [UNESP]Made available in DSpace on 2021-06-25T11:05:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Chitosan (CS), a biopolymer with intrinsic antimicrobial activity, can increase antimicrobial photodynamic inactivation (aPDI). The aim of this study was to evaluate the capacity of CS to potentiate the efficacy of Photoditazine® (PDZ)...
Avaliação do potencial de bactérias para degradar derivados do petróleo e produ...
Maciel, Inês Maria Cals Theophilo; Melo, Vânia Maria MacielThe present research work describes the evaluation of the potential by two bacteria strains isolated from the oil polluted ef uent, for degrading petroleum derivatives and producing biosurfactants, preliminarily identi ed as Acinetobacter spp. and Bacillus spp. Their biodegradation potential was assessed by their being cultivated in mineral broth containing glycerol, gasoline, kerosene or diesel as the only sou...
Biologia populacional da lesma-do-mar Aplysia dactylomela Rang, 1828 em duas pr...
Bezerra, Luis Ernesto Arruda; Carvalho, Ana Fontenele Urano; Matthews-Cascon, Helena; Melo, Vânia Maria MacielThis work describes the population biology of the sea hare, Aplysia dactylomela, at two beaches in Ceará State, Brazil. Their habitats were monthly examined for one-year period, at low tide during daytime and the number, size, spawning and breeding behavior were registered. Feeding habits were determined by observation of seaweed species consumed in the field and by dissecting and examining the gut contents of ...