IITAA

O Instituto de Investigação e Tecnologia da Agronomia e Meio Ambiente (IITAA) desenvolve trabalho de investigação com o objetivo de perseguir estudos em diversas áreas, como a caracterização / previsão do clima insular e os efeitos das mudanças globais em comunidades do oceano para os to... Ler mais »

PUBLICAÇÕES

Unravelling treasures from the natural heritage of Azores: genetic richness of microorganisms from extreme environments

Tecnologias Alimentares e Saúde

Download

Referência

Cristina Riquelme, António Louvado, Rita Varela, Maria de Lurdes Enes Dapkevicius. Unravelling treasures from the natural heritage of Azores: genetic richness of microorganisms from extreme environments. I Congresso de Ciência e Desenvolvimento dos Açores. Crise, território e paisagem. 26-27th July 2013.

Resumo

Bacterial secondary metabolites are an important source of natural products with
considerable effects on health, nutrition and economy of human societies. The search for compounds such as antibiotics has increasingly gained relevance with the rise in bacterial resistance. Microorganisms from extreme environments are especially valuable as reservoirs for novel bioactive compounds for various biotechnological applications.
Biogeographic isolation, accessibility to sites with extreme conditions, and their
immense bacterial diversity, make the Azores an excellent scenario to screen for the presence of interesting compounds. We aimed at detecting the presence of antibiotic-producing bacteria in volcanic cavities and fumarole fields of the Azores.
The obtained isolates were grown and purified in conditions resembling those of the sampling location. They were characterized on the basis of their morphological and physiological characters. Antimicrobial activity screening was performed against human pathogens by the cross-streak assay. For the isolates with larger antimicrobial spectra, antimicrobial activity was confirmed by the well-assay test and their taxonomic identity was assessed by sequencing of the 16S rRNA gene.
Isolates displaying antimicrobial activity against at least one of the pathogens under study were found in all sampling locations. Actinobacteria, Firmicutes and
Proteobacteria were the most represented phyla among the isolates of interest. Azorean extreme environments are home to a vast diversity of bacteria, from which molecules that are useful from the biotechnological point of view can be obtained. The economic value of Azorean natural resources needs to be better understood and duly promoted.

Sbado, 27 Julho, 2013

Equipa

Maria de Lurdes Nunes Enes Dapkevicius
Membro Integrado com contrato
Cristina Riquelme Gabriel
Investigador Colaborador (Outros)
Ana Rita Boura Varela
Antigo membro

    Ver todas as publicações

 
Web Development: Via Oceânica, 2009
English