Pollution Impacts on Bacterioplankton Diversity in a Tropical Urban Coastal Lagoon System

Sallôto, Gigliola Rhayd Boechat; Cardoso, Alexander Machado; Coutinho, Felipe H.; Pinto, Leonardo Henriques; Vieira, Ricardo P.; Chaia, Catia; Lima, J. L. F.; Albano, Rodolpho Mattos; Martins, Orlando B.; Clementino, Maysa M.

doi:10.1371/journal.pone.0051175

Cited by 20 publications

(17 citation statements)

References 40 publications

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“…Another problem is the contamination of natural environments with antibiotic resistant E. coli strains, and its impact on economic and health aspects (El Rahman, El-Wafa, & Ibrahim, 2015). Salloto et al (2012) reported that 5.7% of all infectious diseases on the planet are related to the use of lowquality water. In developing countries, there is an estimate that 80% of all diseases and more than a third of deaths are caused by the consumption of contaminated water (Dhanya, Anitha, & Dhanashree, 2013).…”

Section: Resultsmentioning

confidence: 99%

Insights into multiple use water enterobacteria from the Brazilian semi-arid: the first approach by pyrosequencing

Neto

Regali-Seleghim

Araújo

et al. 2019

Acta Sci. Biol. Sci.

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Thousands of people living in semi-arid regions face problems of drought and loss of water quality. In addition, high incidence of acute diarrheal diseases related to water consumption has been responsible for a high number of deaths and high economic costs for human health. Many of the diseases can be caused by the presence of enterobacteria in reservoirs that serve for multiple purposes. This study aimed to confirm the presence of potentially harmful bacteria, which was highlighted in other articles, and to reveal non-identified genera by culture-dependent methods and pyrosequencing. Twenty-three genera of the Enterobacteriaceae family were detected, with emphasis on Escherichia genus and confirmation of the presence of species such as Salmonella enterica and Enterobacter cloacae. The abundance of heterotrophic prokaryotes and the physical and chemical data show an expected average for this type of environment due to the numbers historically presented in previous articles. The unprecedented detection of the presence of some potentially pathogenic species can alert and raise awareness of the populations that use stored water in the semi-arid regions. Consequently, as a result of the peculiar characteristics of reservoirs under this climate influence, there is a cosmopolitanism of enterobacteria that may be related to the alarming numbers of infections from Waterborne Diseases.

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Section: Resultsmentioning

confidence: 99%

Insights into multiple use water enterobacteria from the Brazilian semi-arid: the first approach by pyrosequencing

Neto

Regali-Seleghim

Araújo

et al. 2019

Acta Sci. Biol. Sci.

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“…Members of the Acinetobacter genus are commonly cultured in the laboratory or associated with soil or animals and are not often detected in 16S rRNA gene surveys of freshwater (Zwart et al 2002;Newton et al 2011). Previous studies in tropical pristine freshwater environments also found Acinetobacter-related sequences (Ghai et al 2011;Salloto et al 2012).…”

Section: Resultsmentioning

confidence: 99%

Environmental diversity of bacteria in a warm monomictic tropical freshwater lake

et al. 2015

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The phylogenetic diversity of freshwater bacteria, particularly in tropical lakes, has not been thoroughly investigated. Here, we employed a cloning-and sequencing-based analysis of the 16S rRNA gene to investigate the composition of bacterial communities from the upper (UW, 0 m depth) and bottom (BW, 7 m depth) waters of a tropical unstratified freshwater lake. A diverse bacterial community was found by phylogenetic analysis, with more diversity in BW than UW. Five phyla (OP11, OD1, Deinococcus-Thermus, Elusimicrobia, and Planctomycetes) were specifically found in BW. Chloroflexi was only found in UW, with four phyla (Proteobacteria, Actinobacteria, Firmicutes, and Bacteroidetes) that were common in both the UW and BW. Unclassified bacteria were also found. LIBSHUFF analysis revealed that the composition of the bacterial community changed markedly between the UW and BW, despite the water circulation. Proteobacteria, especially Alphaproteobacteria, were dominant community members. Although Actinobacteria, Betaproteobacteria, and Bacteroidetes are thought to be the most abundant groups of freshwater bacterioplankton, they were not dominant in our samples. Conversely, poorly characterized groups, such as OP11 and OD1, were enriched in our samples. This study revealed that members of taxa previously described as typical for freshwater had low representation in this tropical freshwater lake. Altogether, the considerable proportion of poorly described phyla together with the high proportion of bacterial sequences from novel species suggests distinct ecological features of these communities from Carioca Lake. These data add significant new information regarding bacteria that inhabit tropical freshwater lakes and may have implications for the typical signature of bacteria in freshwater.

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“…The emergence of antimicrobial-resistant bacteria in aquatic environments has increased considerably (Miyake et al, 2003). During the last 25 years in Brazil, resistant bacteria have already been identified in river waters (De Mondino et al, 1995;Souza et al, 2000;Falcão et al, 2004), lakes and ponds; (De Mondino et al, 1995;Falcão et al, 2004;Pontes et al, 2009;Salloto et al, 2012) and in the sea (De Mondino et al, 1995;Falcão et al, 2004;Cardonha et al, 2004;De Oliveira and Pinhata, 2008;De Oliveira et al, 2010). Bacteria were also identified in sewage treatment stations (Prado et al, 2008;Souza et al, 2000;Ribeiro, 2011), in the water of tanks used for aquaculture (Hirsch et al, 2006;Pereira Júnior et al, 2006;Lima et al, 2006;Ribeiro et al, 2010;Ribeiro, 2011;Resende et al, 2012) and, even more worryingly, in drinking water (Silva et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

“…Human exposure to this contaminated water, such as by ingesting drinking water or during recreational activities, is a significant route for intestinal pathogens (Cardonha et al, 2004 Environmental contamination is directly linked to population growth. To the extent that the population grows, anthropogenic impacts affect lakes, rivers and coastal ecosystems, mainly due to the discharge of sewage and chemical compounds, such as pesticides, in addition to hormones and antibiotics that are widely used in human and veterinary clinical practice (Salloto et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

“…In most of the studies published during the investigation period, the Gram-negative bacteria were the most prevalent microorganisms, almost all of them belonging to the Enterobacteriaceae family, which contains the group of coliforms (De Mondino et al, 1995;Souza et al, 2000;Falcão et al, 2004;Lima et al, 2006;Pereira Júnior et al, 2006;Hirsch et al, 2006;Scoaris et al, 2008;Prado et al, 2008;Silva et al, 2008;Pontes et al, 2009;Ribeiro et al, 2010;Rebouças et al, 2011;Ribeiro, 2011;Resende et al, 2012;Salloto et al, 2012), however, Gram-positive bacteria were also isolated (De Oliveira and Pinhata, 2008;Oliveira et al, 2010;Salloto et al, 2012). The Enterococcus spp.…”

Section: Resultsmentioning

confidence: 99%

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Antimicrobial resistance in bacteria isolated from aquatic environments in Brazil: a systematic review

Nascimento¹,

Araújo²

2014

Rev. ambiente água

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This article discusses antibiotic resistance in bacteria isolated from aquatic environments in Brazil, taking into account isolation sites, the main reported antimicrobial agents, the genes involved in resistance, the most prevalent bacterial genera and species, and the main mechanisms of resistance. This review is based upon specialized literature, consulting published scientific articles selected from the SciELO, PubMed and LILACS databases. Based upon the inclusion criteria, we selected 21 articles, most (61.6%) were from PubMed, with the highest prevalence for work done in the Southeast region (71.4%) in freshwater environments (71.4%), and the major focus on farm ponds (28.6%). Gram-negative bacteria are the most studied (71.4%) and the Aeromonas spp. was the one found most frequently (19.0%). The most frequently used antimicrobials were chloramphenicol (81.0%), gentamicin (76.2%), sulpha/trimethroprim (71.4%), ampicillin (61.9%) and tetracycline (71.4%); and the ones with higher prevalence of resistance were chloramphenicol (58.8%), sulpha/trimethroprim (78.5%) and ampicillin (84.6%). It was found that studies on resistance in other aquatic environments have not yet been conducted in Brazil, especially in the North and Northeast regions, where irregular rainfall distribution leads to the use of reservoirs as supply sources during the dry season, highlighting concerns regarding the quality, contamination and maintenance of these resources, as the water is intended for human use or for production purposes. Resistência antimicrobiana em bactérias isoladas de ambientes aquáticos no Brasil: uma revisão sistemática RESUMOEste artigo tem como objetivo discutir a resistência antimicrobiana em bactérias isoladas de ambientes aquáticos no Brasil, levando em conta os locais de isolamento, os principais agentes antimicrobianos relatados, os genes envolvidos na resistência, os gêneros e espécies bacterianas mais prevalentes e os principais mecanismos de resistência presentes. Trata-se de uma revisão bibliográfica sistemática baseada em literatura especializada por meio de consulta a artigos científicos publicados e selecionados através de busca em bancos de dados 240 Ermeton Duarte do Nascimento et al.

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Pollution Impacts on Bacterioplankton Diversity in a Tropical Urban Coastal Lagoon System

Cited by 20 publications

References 40 publications

Insights into multiple use water enterobacteria from the Brazilian semi-arid: the first approach by pyrosequencing

Insights into multiple use water enterobacteria from the Brazilian semi-arid: the first approach by pyrosequencing

Environmental diversity of bacteria in a warm monomictic tropical freshwater lake

Antimicrobial resistance in bacteria isolated from aquatic environments in Brazil: a systematic review

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