Detection of sentinel bacteria in mangrove sediments contaminated with heavy metals.

Fernández‐Cadena, Juan Carlos; Ruiz-Fernández, Paula; Fernández-Ronquillo, T.E.; Dı́ez, Beatriz; Trefault, Nicole; Andrade, Santiago; Iglesia, Rodrigo De la

doi:10.1016/j.marpolbul.2019.110701

Cited by 42 publications

(13 citation statements)

References 53 publications

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“…On the other hand, the relative abundance of Sulfurovum, Anaerolineae and Ruminococcaceae increases with higher copper levels in the investigated sediments. Consistently with our results, an increase has been found in literature in metal contaminated environments including mangrove sediments and hydrothermal vents for Sulfurovum (Nakagawa et al, 2007;Fernández-Cadena et al, 2020), river sediments, soils, and coastal sediments for Anaerolineae (Sun et al, 2013;Yin et al, 2015;Meng et al, 2019), as well as barrier for mine tailings for Ruminococcaceae (Zhang et al, 2019).…”

Section: Discussionsupporting

confidence: 93%

Impacts of Anthropogenic Pollutants on Benthic Prokaryotic Communities in Mediterranean Touristic Ports

et al. 2020

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Ports and marinas are central nodes in transport network and play a strategic role in coastal development. They receive pollution from land-based sources, marine traffic and port infrastructures on one side and constitute a potential pollution source for the adjacent coastal areas on the other. The aim of the present study was to evaluate the effects of organic and inorganic co-contamination on the prokaryotic communities in sediments from three Mediterranean ports. The structure and composition of the bacterial and archaeal communities were assessed by targeted metagenomic analysis of the 16S rRNA gene, and the links of prokaryotic communities with environmental and pollution variables were investigated. The harbors presented pronounced site-specificity in the environmental properties and pollution status. Consistently, the structure of archaeal and bacterial communities in surface sediments exhibited a strong spatial variation among the three investigated ports. On the contrary, a wide overlap in composition of prokaryotic assemblages among sites was found, but local variation in the community composition and loss of prokaryotic diversity was highlighted in a heavily impacted port sector near a shipyard. We provided evidences that organic matter, metals and PAHs as well as temperature and salinity play a strong role in structuring benthic bacterial communities significantly contributing to the understanding of their responses to anthropogenic perturbations in marine coastal areas. Among metals, copper was recognized as strongly associated with the observed changes in bacterial assemblages. Overall, this study provides the first assessment of the effects exerted by multiple organic and inorganic contaminations on benthic prokaryotes in ports over a large spatial scale and designates bacterial community as a candidate tool for the monitoring of the sediment quality status in harbors.

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Section: Discussionsupporting

confidence: 93%

Impacts of Anthropogenic Pollutants on Benthic Prokaryotic Communities in Mediterranean Touristic Ports

et al. 2020

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“…Besaury et al suggested that Archaea, such as the Crenarcheota, have a greater resistance to copper contamination due to their ability to sequestrate or pump out copper; this study also found Crenarchaeota flourishing in their copper-contaminated samples [ 24 ]. Members of the order Campylobacterales (phylum Epsilonbacteraeota) were also found at higher abundances in HiHi and 3MC sediments; some of its members, including the genus Sulfurovum , have been found in sulfide- and hydrocarbon-rich sediments similar to muck [ 90 ] as well as metal-contaminated sediments [ 91 , 92 ]. ( Fig 6A and 6B ; S4D and S5D Figs).…”

Section: Discussionmentioning

confidence: 99%

Defining the sediment prokaryotic communities of the Indian River Lagoon, FL, USA, an Estuary of National Significance

et al. 2020

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The Indian River Lagoon, located on the east coast of Florida, USA, is an Estuary of National Significance and an important economic and ecological resource. The Indian River Lagoon faces several environmental pressures, including freshwater discharges through the St. Lucie Estuary; accumulation of anoxic, fine-grained, organic-rich sediment; and metal contamination from agriculture and marinas. Although the Indian River Lagoon has been well-studied, little is known about its microbial communities; thus, a two-year 16S amplicon sequencing study was conducted to assess the spatiotemporal changes of the sediment bacterial and archaeal groups. In general, the Indian River Lagoon exhibited a prokaryotic community that was consistent with other estuarine studies. Statistically different communities were found between the Indian River Lagoon and St. Lucie Estuary due to changes in porewater salinity causing microbes that require salts for growth to be higher in the Indian River Lagoon. The St. Lucie Estuary exhibited more obvious prokaryotic seasonality, such as a higher relative abundance of Betaproteobacteriales in wet season and a higher relative abundance of Flavobacteriales in dry season samples. Distance-based linear models revealed these communities were more affected by changes in total organic matter and copper than changes in temperature. Anaerobic prokaryotes, such as Campylobacterales, were more associated with high total organic matter and copper samples while aerobic prokaryotes, such as Nitrosopumilales, were more associated with low total organic matter and copper samples. This initial study fills the knowledge gap on the Indian River Lagoon bacterial and archaeal communities and serves as important data for future studies to compare to determine possible future changes due to human impacts or environmental changes.

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“…It is well established that heavy metal pollution can inhibit microbial activities and consequently affect the microbial community structure in the contaminated soils [13]. However, detailed research work linking microbial characteristics with heavy metal contamination in mangrove soils has been so far limited to tropical areas [10]. In this study, we investigated the characteristics of the bacterial community in subtropical mangrove soils that were contaminated by heavy metals in a mangrove wetland adjacent to a megacity with a population of 12.53 million people.…”

Section: Site Description and Sampling Methodsmentioning

confidence: 99%

“…There have been increasing research interests in microbiomes in mangrove soils by using next-generation sequencing in recent years [6,7]. Available reports showed that the structure of microbial community in mangrove soils tended to change in response to variations in environmental conditions such as vegetation type [8], water salinity and tidal flooding [9], pollution [7,10] and nutrient supply status [11].…”

Section: Introductionmentioning

confidence: 99%

Spatial and Temporal Variation in Microbial Diversity and Community Structure in a Contaminated Mangrove Wetland

Ting

Cai

et al. 2020

Applied Sciences

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Field and laboratory investigations were conducted to characterize bacterial diversity and community structure in a badly contaminated mangrove wetland adjacent to the metropolitan area of a megacity in subtropical China. Next-generation sequencing technique was used for sequencing the V4-V5 region of the 16s rRNA gene on the Illumina system. Collectively, Proteobacteria, Chloroflexi, Planctomycetes, Actinobacteria and Bacteroidetes were the predominant phyla identified in the investigated soils. A significant spatial variation in bacterial diversity and community structure was observed for the investigated mangrove soils. Heavy metal pollution played a key role in reducing the bacterial diversity. The spatial variation in soil-borne heavy metals shaped the spatial variation in bacterial diversity and community structure in the study area. Other environmental factors such as total carbon and total nitrogen in the soils that are affected by seasonal change in temperature could also influence the bacterial abundance, diversity and community structure though the temporal variation was relatively weaker, as compared to spatial variation. The bacterial diversity index was lower in the investigated site than in the comparable reference site with less contaminated status. The community structure in mangrove soils at the current study site was, to a remarkable extent, different from those in the tropical mangrove wetlands around the world.

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Detection of sentinel bacteria in mangrove sediments contaminated with heavy metals.

Cited by 42 publications

References 53 publications

Impacts of Anthropogenic Pollutants on Benthic Prokaryotic Communities in Mediterranean Touristic Ports

Impacts of Anthropogenic Pollutants on Benthic Prokaryotic Communities in Mediterranean Touristic Ports

Defining the sediment prokaryotic communities of the Indian River Lagoon, FL, USA, an Estuary of National Significance

Spatial and Temporal Variation in Microbial Diversity and Community Structure in a Contaminated Mangrove Wetland

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