Please use this identifier to cite or link to this item: http://repositorio.ufc.br/handle/riufc/63515
Type: Artigo de Periódico
Title: Metagenomic analysis of sediments under seaports influence in the Equatorial Atlantic Ocean
Authors: Tavares, Tallita Cruz Lopes
Normando, Leonardo Ribeiro Oliveira
Vasconcelos, Ana Tereza Ribeiro de
Gerber, Alexandra Lehmkuhl
Agnez-Lima, Lucymara Fassarella
Melo, Vânia Maria Maciel
Keywords: Seaports;Microbiomes;Pyrosequencing;Bacteria
Issue Date: 2016
Publisher: Science of the Total Environment
Citation: TAVARES, Tallita Cruz Lopes et al. Metagenomic analysis of sediments under seaports influence in the Equatorial Atlantic Ocean. Science of the Total Environment, [s. l.], v. 557, p. 888–900, 2016.
Abstract: Maritime ports are anthropogenic interventions capable of causing serious alterations in coastal ecosystems. In this study, we examined the benthic microbial diversity and community structure under the influence of two maritime ports, Mucuripe (MUC) and Pecém (PEC), at Equatorial Atlantic Ocean in Northeast Brazil. Those seaports differ in architecture, time of functioning, cargo handling and contamination. The microbiomes from MUC and PEC were also compared in silico to 11 other globally distributed marine microbiomes. The comparative analysis of operational taxonomic units (OTUs) retrieved by PCR-DGGE showed that MUC presents greater richness and β diversity of Bacteria and Archaea than PEC. In line with these results, metagenomic analysis showed that MUC and PEC benthic microbial communities share the main common bacterial phyla found in coastal environments, although can be distinguish by greater abundance of Cyanobacteria in MUC and Deltaproteobacteria in PEC. Both ports differed in Archaea composition, being PEC port sediments dominated by Thaumarchaeota. The microbiomes showed little divergence in their potential metabolic pathways, although shifts on the microbial taxonomic signatures involved in nitrogen and sulphur metabolic pathways were observed. The comparative analysis of different benthic marine metagenomes from Brazil, Australia and Mexico grouped them by the geographic location rather than by the type of ecosystem, although at phylum level seaport sediments share a core microbiome constituted by Proteobacteria, Cyanobacteria, Actinobacteria, Tenericuteres, Firmicutes, Bacteriodetes and Euryarchaeota. Our results suggest that multiple physical and chemical factors acting on sediments as a result of at least 60 years of port operation play a role in shaping the benthic microbial communities at taxonomic level, but not at functional level.
URI: http://www.repositorio.ufc.br/handle/riufc/63515
Access Rights: Acesso Aberto
Appears in Collections:DBIO - Artigos publicados em revista científica

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