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Bacterial diversity in relatively pristine and anthropogenically-influenced mangrove ecosystems (Goa, India)

DRS at CSIR-National Institute of Oceanography

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Title Bacterial diversity in relatively pristine and anthropogenically-influenced mangrove ecosystems (Goa, India)
 
Creator Fernandes, S.O.
Kirchman, D.L.
Michotey, V.D.
Bonin, P.C.
LokaBharathi, P.A.
 
Subject AQUATIC COMMUNITIES::Benthos
AQUATIC COMMUNITIES::Mangrove
MICROBIOLOGY::General
GEOLOGY AND GEOPHYSICS::Sediments and sedimentation
AQUATIC POLLUTION::Characteristics, behaviour and fate
 
Description 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
 
Date 2017-09-27T13:06:15Z
2017-09-27T13:06:15Z
2014
 
Type Journal Article
 
Identifier Brazilian Journal of Microbiology, vol.45(4); 2014; 1161-1171
http://drs.nio.org/drs/handle/2264/5161
 
Language en
 
Rights Copyright [2014]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Sociedade Brasileira de Microbiologia