Data/hora: 06/06/2024 03:30:06

Provedor de dados: | 58
País: | Brazil
Título: | Bacterial diversity in relatively pristine and anthropogenically-influenced mangrove ecosystems (Goa, India)
Autores: | Fernandes,Sheryl Oliveira; Kirchman,David L.; Michotey,Valérie D.; Bonin,Patricia C.; LokaBharathi,P.A.
Data: | 2014-12-01
Ano: | 2014
Palavras-chave: | Bacteria; Denitrification; Diversity; Mangroves; Sediments.
Resumo: | To appreciate differences in benthic bacterial community composition at the relatively pristine Tuvem and the anthropogenically-influenced Divar mangrove ecosystems in Goa, India, parallel tag sequencing of the V6 region of 16S rDNA was carried out. We hypothesize that availability of extraneously-derived anthropogenic substrates could act as a stimulatant but not a deterrent to promote higher bacterial diversity at Divar. Our observations revealed that the phylum Proteobacteria was dominant at both locations comprising 43-46% of total tags. The Tuvem ecosystem was characterized by an abundance of members belonging to the class Deltaproteobacteria (21%), ~ 2100 phylotypes and 1561 operational taxonomic units (OTUs) sharing &amp;gt; 97% similarity. At Divar, the Gammaproteobacteria were ~ 2x higher (17%) than at Tuvem. A more diverse bacterial community with &amp;gt; 3300 phylotypes and &amp;gt; 2000 OTUs mostly belonging to Gammaproteobacteria and a significantly higher DNT (n = 9, p &lt; 0.001, df = 1) were recorded at Divar. These findings suggest that the quantity and quality of pollutants at Divar are perhaps still at a level to maintain high diversity. Using this technique we could show higher diversity at Divar with the possibility of Gammaproteobacteria contributing to modulating excess nitrate.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400006
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822014000400006
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.45 n.4 2014
Fonte: | info:eu-repo/semantics/openAccess