Metagenoma de comunidades microbianas expostas à radiação natural e a metais
Many species have specialized to live in the most varied existing environments showing the remarkable adaptability of the microbial world the most diverse physicochemical conditions. Environments exposed to natural radiation and metals are scarce around the world, presenting a microbiota still u...
Na minha lista:
| Autor principal: | |
|---|---|
| Outros Autores: | |
| Formato: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
|
| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/19511 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: | Many species have specialized to live in the most varied existing
environments showing the remarkable adaptability of the microbial world the
most diverse physicochemical conditions. Environments exposed to natural
radiation and metals are scarce around the world, presenting a microbiota still
unknown. With a total number estimated between 4 and 6 x 1030 microrganisms
on earth, they constitute an enormous biological and genetic pool to be
explored. Metagenomic approach independent of cultivation, provides a new
form to access to the potential genomic environmental samples becoming a
powerful tool for the elucidation of ecological functions, metabolic profiles, as
well as to identify new biomolecules. In this context, the genetic material of
environmental soil and water samples from Açude Boqueirao Parelhas-RN,
under the influence of natural radiation and the presence of metals, was
extracted, pirosequencing and the generated sequences were analyzed by
bioinformatics programs (MG-RAST and STAMP). Taxonomic comparative
profiles of both samples showed high abundance of Domain Bacteria, followed
by a small portion attributable to Eucaryota Domains, Archaea and Viruses.
Proteobacteria, Actinobacteria and Bacterioidetes phyla showed the greater
dominance in both samples. Important genera and species associated with
resistance to various stressors found in region were observed. Sequences
related to oxidative and heat stress, DNA replication and repair, and resistance
to toxic compounds were observed, suggesting a significant relationship
between the microbiota and their metabolic profile, influenced by regional
environmental variables. The results of this study add valuable and unpublished
data on the composition of microbial communities in these regions |
|---|