Bacterial diversity in relatively pristine and anthropogenically-influenced mangrove ecosystems (Goa, India)
AUTOR(ES)
Fernandes, Sheryl Oliveira, Kirchman, David L., Michotey, Valérie D., Bonin, Patricia C., LokaBharathi, P.A.
FONTE
Braz. J. Microbiol.
DATA DE PUBLICAÇÃO
2014-12
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 > 97% similarity. At Divar, the Gammaproteobacteria were ~ 2x higher (17%) than at Tuvem. A more diverse bacterial community with > 3300 phylotypes and > 2000 OTUs mostly belonging to Gammaproteobacteria and a significantly higher DNT (n = 9, p < 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.
Documentos Relacionados
- Religiosos em armas: o motim dos agostinhos da Congregação da Índia Oriental (Goa, 1638)
- Geospatial analysis of the effects of tsunami on coral and mangrove ecosystems of Mayabunder in Andaman Islands, India
- Cyanobacteria in mangrove ecosystems: isolation, morphology and genetic diversity
- Democracia e dominação: uma discussão (via Índia) com referência à América Latina (Brasil)
- Study of pandrug and heavy metal resistance among E. coli from anthropogenically influenced Delhi stretch of river Yamuna