Structural and Functional Changes of Groundwater Bacterial Community During Temperature and pH Disturbances

Song, Yuhao; Mao, Guannan; Gao, Guanghai; Bartlam, Mark; Wang, Yingying

doi:10.1007/s00248-019-01333-7

Cited by 21 publications

(13 citation statements)

References 95 publications

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“…In addition, the occurrence of fecal indicator bacteria (i.e., E. coli) in altered conditions indicated the input of microorganisms originating from the surface environment, suggesting the co-presence of microorganisms with different functional traits other than those originally available in groundwater. In altered groundwater a higher prokaryotic cell abundance and a structural shift toward LNA cells was observed as similarly found for impacted groundwater [24,57,60]. Notably, LNA cells were found to be specifically composed by selected microbial taxa, which were also considered differently responsive to environmental changes than HNA cells [24,61].…”

Section: Discussionsupporting

confidence: 58%

“…In altered groundwater a higher prokaryotic cell abundance and a structural shift toward LNA cells was observed as similarly found for impacted groundwater [24,57,60]. Notably, LNA cells were found to be specifically composed by selected microbial taxa, which were also considered differently responsive to environmental changes than HNA cells [24,61].…”

Section: Discussionsupporting

confidence: 58%

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Physiological Profiling and Functional Diversity of Groundwater Microbial Communities in a Municipal Solid Waste Landfill Area

Melita

Amalfitano

Preziosi

et al. 2019

Water

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The disposal of municipal solid wastes in landfills represents a major threat for aquifer environments at the global scale. The aim of this study was to explore how groundwater geochemical characteristics can influence the microbial community functioning and the potential degradation patterns of selected organic substrates in response to different levels of landfill-induced alterations. Groundwaters collected from a landfill area were monitored by assessing major physical-chemical parameters and the microbiological contamination levels (total coliforms and fecal indicators-Colilert-18). The aquatic microbial community was further characterized by flow cytometry and Biolog EcoPlates TM assay. Three groundwater conditions (i.e., pristine, mixed, and altered) were identified according to their distinct geochemical profiles. The altered groundwaters showed relatively higher values of organic matter concentration and total cell counts, along with the presence of fecal indicator bacteria, in comparison to samples from pristine and mixed conditions. The kinetic profiles of the Biolog substrate degradation showed that the microbial community thriving in altered conditions was relatively more efficient in metabolizing a larger number of organic substrates, including those with complex molecular structures. We concluded that the assessment of physiological profiling and functional diversity at the microbial community level could represent a supportive tool to understand the potential consequences of the organic contamination of impacted aquifers, thus complementing the current strategies for groundwater management.

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Section: Discussionsupporting

confidence: 58%

Section: Discussionsupporting

confidence: 58%

Physiological Profiling and Functional Diversity of Groundwater Microbial Communities in a Municipal Solid Waste Landfill Area

Melita

Amalfitano

Preziosi

et al. 2019

Water

View full text Add to dashboard Cite

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“…Bacterial community composition was also strongly associated with the DO gradient, and significant changes in bacterial community composition occurred at a DO concentration between 5.18 and 7.12 mg L −1 of O 2 (Spietz et al, 2015). Results revealed strong resistance and growth potential of phylum Proteobacteria when the temperature increased or the pH decreased in groundwater (Song et al, 2019). Meron et al (2011) examined changes in bacterial communities in the coral mucus, tissue and skeleton following exposure of the coral Acropora eurystoma to two different pH conditions: 7.3 and 8.2 (ambient seawater) and found that the microbial community was different at the two pH values and an increase in bacteria associated with diseased and stressed corals in the corals maintained at the lower pH.…”

Section: Discussionmentioning

confidence: 99%

Comparison of planktonic bacterial communities indoor and outdoor of aquaculture greenhouses

Zhao

Ping

et al. 2022

Journal of Applied Microbiology

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Aims: Greenhouses are widely used in agriculture systems to shield crops from unfavourable weather to achieve a year-round food supply. In recent years, aquaculture ponds have been placed in greenhouses in many regions. The impacts of the greenhouses on planktonic bacterial communities should be uncovered. Methods and Results:In this study, two polyolefin film greenhouses accommodating aquaculture ponds were established and planktonic bacterial communities were compared from samples taken in aquaculture ponds inside and outside the greenhouses, using Illumina 16S rRNA sequencing. Conclusions:The results showed there were significant variations in bacterial community structure between indoor and outdoor samples. Obvious differences were also found between two greenhouses, whereas the differences in indoor samples were weaker than outdoor samples. Significantly higher temperature (in summer), pH and permanganate index were found in the outdoor pond samples. Results of redundancy analysis showed that Proteobacteria and Bacteroidota were positively related to the dissolved oxygen, total nitrogen and total phosphorus, and Actinobacteriota were positively related to pH, temperature and permanganate index, whereas Cyanobacteria were positively related to the salinity, conductivity, total dissolved solids and ammonia nitrogen. Significance and Impact of the Study:The results of this study revealed that greenhouses significantly influenced planktonic bacterial communities in aquaculture ponds. This study is expected to provide a scientific basis for aquaculture in greenhouses.

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“…Unlike surface water, groundwater ecosystems are relatively stable with lower more consistent temperatures, lack of nutrients, and lack of dissolved oxygen (Griebler and Lueders, 2009). Heterotrophic bacteria in groundwater environments constitute the main microbial community, because they are better adapted to the characteristics of the groundwater environment (Song et al, 2019). In this study, 135 phyla, 267 classes, 508 orders, 715 families, 1218 genera, and 774 species were obtained from 30 samples.…”

Section: Discussionmentioning

confidence: 99%

Source water microorganism assessment in three cities in China: A comparative study

Yang

Smith

et al. 2022

Front. Environ. Sci.

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Reservoirs, rivers and groundwater are the top three sources of drinking water supplies in China. As microbial contamination of drinking water is still a prominent water quality problem in rural areas, understanding the microbial quality of these sources is important to the public’s health and economic prosperity of communities. In this study, three types of source water samples were collected from three cities in China. Bacterial contamination indicators testing showed that: total coliforms (TCs) and potential E. coli were not detected in groundwater, but both were detected in river and reservoir water. Total bacteria (TB) of rivers and Res-Ⅰ (sampling site Ⅰ of reservoir water) were greater than 100 CFU/ml, while less than 100 CFU/ml from Res-Ⅱ (sampling site Ⅱ of reservoir water) and groundwater. Salmonella spp. were isolated from river water and no pathogenic microorganisms were isolated from the other two types of water sources by selective culture. Microbial communities testing by 16S rRNA gene amplicon sequencing indicated that, there were 14,114 operational taxonomic unit (OTU) of microbial abundance from all 30 samples, and most OTUs were only present in river water (15.17%), reservoir water (10.46%) or groundwater (43.91%), while 1540 OTUs (10.91%) were shared by all three types of water sources. There were significant differences in the microbial communities of the three types of source water (p < 0.05). Based on the Ace, Chao, and Shannon-Weaver, and Simpson indexes, the species diversity of bacteria in groundwater was higher than in river water or reservoir water (p < 0.05), with the reservoir water having the lowest diversity of bacteria. More than seven potential pathogenic bacteria were detected in 30 water samples, for example, E. coli, Staphylococcus aureus, Clostridioides difficile and Bacteroides fragilis were present in all three types of water sources, while other pathogenic bacteria occurred only in some of the water samples. Clostridium perfringens were detected in river water and groundwater. This study adds information on the microbial communities of various drinking water sources in rural China, which is valuable to water treatment and waterborne pathogen studies. In addition, this study supports the idea that 16S rRNA gene amplicon sequencing could be used as a supplementary tool for sources water quality monitoring.

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Structural and Functional Changes of Groundwater Bacterial Community During Temperature and pH Disturbances

Cited by 21 publications

References 95 publications

Physiological Profiling and Functional Diversity of Groundwater Microbial Communities in a Municipal Solid Waste Landfill Area

Physiological Profiling and Functional Diversity of Groundwater Microbial Communities in a Municipal Solid Waste Landfill Area

Comparison of planktonic bacterial communities indoor and outdoor of aquaculture greenhouses

Source water microorganism assessment in three cities in China: A comparative study

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