Bacterial community structure in freshwater springs infested with the invasive plant species Hydrilla verticillata

Gordon-Bradley, Nadine; Li, N.; Williams, Henry N.

doi:10.1007/s10750-014-1988-0

Cited by 7 publications

(3 citation statements)

References 48 publications

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“…This indicated that the water bacterial communities in the LL and LX urban lakes had higher carbon source utilization ability. Community-level physiological profiles (CLPPs) tests have been previously employed to determine differences in metabolic fingerprints in bacterial communities in the water [ 8 ] and sediment [ 12 ] of urban water source reservoir and springs [ 33 ]. Similarly, a study conducted by Gordon-Bradley et al [ 33 ] also suggested that carbon sources utilization profiles of freshwater spring water bacterial communities during blooming and non-blooming stages changed significantly, while carbohydrates and polymers were most utilized during the non-blooming stage.…”

Section: Resultsmentioning

confidence: 99%

Water Bacterial and Fungal Community Compositions Associated with Urban Lakes, Xi’an, China

Zhang

Wang

Chen

et al. 2018

IJERPH

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Urban lakes play a vital role in the sustainable development of urbanized areas. In this freshwater ecosystem, massive microbial communities can drive the recycling of nutrients and regulate the water quality. However, water bacterial and fungal communities in the urban lakes are not well understood. In the present work, scanning electron microscopy (SEM) was combined with community level physiological profiles (CLPPs) and Illumina Miseq sequence techniques to determine the diversity and composition of the water bacterial and fungal community in three urban lakes, namely Xingqing lake (LX), Geming lake (LG) and Lianhu lake (LL), located in Xi’an City (Shaanxi Province, China). The results showed that these three lakes were eutrophic water bodies. The highest total nitrogen (TN) was observed in LL, with a value of 12.1 mg/L, which is 2 times higher than that of LG. The permanganate index (CODMn) concentrations were 21.6 mg/L, 35.4 mg/L and 28.8 mg/L in LG, LL and LX, respectively (p < 0.01). Based on the CLPPs test, the results demonstrated that water bacterial communities in the LL and LX urban lakes had higher carbon source utilization ability. A total of 62,742 and 55,346 high quality reads were grouped into 894 and 305 operational taxonomic units (OTUs) for bacterial and fungal communities, respectively. Water bacterial and fungal community was distributed across 14 and 6 phyla. The most common phyla were Proteobacteriaand Cyanobacteria. Cryptomycota was particularly dominant in LL, while Chytridiomycota and Entomophthormycota were the most abundant fungal phyla, accounting for 95% of the population in the LL and 56% in the LG. Heat map and redundancy analysis (RDA) highlighted the dramatic differences of water bacterial communities among three urban lakes. Meanwhile, the profiles of fungal communities were significantly correlated with the water quality parameters (e.g., CODMn and total nitrogen, TN). Several microbes (Legionella sp. and Streptococcus sp.) related to human diseases, such as infectious diseases, were also found. The results from this study provides useful information related to the water quality and microbial community compositions harbored in the aquatic ecosystems of urban lakes.

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Section: Resultsmentioning

confidence: 99%

Water Bacterial and Fungal Community Compositions Associated with Urban Lakes, Xi’an, China

Zhang

Wang

Chen

et al. 2018

IJERPH

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“…Similarly, experiments conducted in ponds showed that dense monotypic stands of hydrilla (Hydrilla verticillata) changed the taxa composition of invertebrate assemblages compared with macrophyte multi-species treatments, although both treatments did not differ in regard to invertebrate taxa richness (Theel et al, 2008). Hydrilla likely impacts microbes as well, with shifts of metabolic profiles and phylogenetic structure of bacterial communities as density of hydrilla increases (Gordon-Bradley et al, 2015).…”

Section: Impacts Of Invasive Speciesmentioning

confidence: 97%

Aquatic invasive species: challenges for the future

et al. 2015

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Humans have effectively transported thousands of species around the globe and, with accelerated trade; the rate of introductions has increased over time. Aquatic ecosystems seem at particular risk from invasive species because of threats to biodiversity and human needs for water resources. Here, we review some known aspects of aquatic invasive species (AIS) and explore several new questions. We describe impacts of AIS, factors limiting their dispersal, and the role that humans play in transporting AIS. We also review the characteristics of species that should be the greatest threat for future invasions, including those that pave the way for invasions by other species (''invasional meltdown''). Susceptible aquatic communities, such as reservoirs, may serve as stepping stones for invasions of new landscapes. Some microbes disperse long distance, infect new hosts and grow in the external aquatic medium, a process that has consequences for human health. We also discuss the interaction between species invasions and other human impacts (climate change, landscape conversion), as well as the possible connection of invasions with regime shifts in lakes. Since many invaders become permanent features of the environment, we discuss how humans live with invasive species, and conclude with questions for future research.

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“…Carbon substrate utilization pro ling has great potential as a technique to evaluate the quality of different sources of water bodies [45]. This technique has previously been employed for analyzing the metabolic ngerprints of microbial communities [2,[46][47][48][49]. We have observed a different carbon utilization pattern for each water samples.…”

Section: Discussionmentioning

confidence: 99%

Microbiome divergence across four major Indian riverine water ecosystems impacted by anthropogenic contamination: A comparative metagenomic analysis

Regar¹,

Kamthan²,

Gaur³

et al. 2020

Preprint

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Background Indian rivers are a major source of livelihood as river water is used for drinking, agriculture, and religious purposes to a large population. In this study, we report comparative microbial structures and functional potential of four major rivers of India, namely Ganga, Narmada, Cauvery, and Gomti. Comparative microbiome study of these geographically distinct rivers was performed using the samples collected from the source to the downstream sites of each river. We employed metagenomic approach to comprehensively determine the taxonomic and functional potential of river microbiome. Results In this study, we report the pollution influences on microbial composition and functional potential of four distantly located rivers. Results revealed significant microbial diversity in contaminated locations as compared to the upstream samples. A total number of 37 bacterial phyla were detected out of which Proteobacteria, Actinobacteria, Bacteroidetes, Planctomycetes, and Verrucomicrobia were abundant. Microbial diversity in respect to anthropogenic activities revealed the prevalence of Acidobacteria, Actinobacteria, Verrucomicrobia, Firmicutes, and Nitrospirae phyla, whereas a decline in Proteobacteria and Bacteroides. Virulent and temperate bacteriophages were found high in Ganga when compared to others. Interestingly, the abundance of bacteriophage decreased with increasing pollution load in the river Ganga, unlike in other rivers. The carbon utilization studies indicated a correlation with functional genes occurred in metal contaminated sites. Ganga water has relatively higher trace elements at pristine-upstream than in the Narmada and Cauvery, indicating its origin from Himalayan rocky mountains and also both Ganga and Cauvery rivers found to harbour a large number of metal resistance genes. Conclusion Our findings indicate a correlation between pollution and the microbiome composition. The insights obtained suggest the role of high abundance of microbial communities with implications for human health and demonstrate the functional capabilities contributed by the microbial communities. Among the four rivers studied, the distinctiveness of Ganga in comparison to others, particularly upstream of Ganga revealed a highly dynamic microbial structure. Bhagirathi and Alaknanda confluence to form Ganga, the microbiome revealed that Alaknanda has the foremost contribution to Ganga with respect to microbial community, bacteriophages, and the type of trace elements and heavy metals detected.

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Bacterial community structure in freshwater springs infested with the invasive plant species Hydrilla verticillata

Cited by 7 publications

References 48 publications

Water Bacterial and Fungal Community Compositions Associated with Urban Lakes, Xi’an, China

Water Bacterial and Fungal Community Compositions Associated with Urban Lakes, Xi’an, China

Aquatic invasive species: challenges for the future

Microbiome divergence across four major Indian riverine water ecosystems impacted by anthropogenic contamination: A comparative metagenomic analysis

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