Interactions of E. coli with algae and aquatic vegetation in natural waters

Cho, K.; Wolny, Jennifer L.; Kase, Julie A.; Unno, Tatsuya; Pachepsky, Yakov

doi:10.1016/j.watres.2021.117952

Cited by 30 publications

(9 citation statements)

References 187 publications

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“…Biofilms, consortiums of bacterial cells and extracellular polymeric substances (EPS) attached to substrate surfaces (Donlan, 2001), are ubiquitous in rivers (Cho et al, 2022; Drummond et al, 2015; Risse‐Buhl et al, 2017; Tlili et al, 2020), coastal areas (De Carvalho, 2018), human organs (Schulze et al, 2021), and drinking water distribution systems (DWDS) (Shen et al, 2016; Yan et al, 2022). Many biofilms are harmful because they increase the presence of pathogenic bacteria (September et al, 2007; Ximenes et al, 2017), clog medical devices (Donlan, 2001; Drescher et al, 2013; Dressaire & Sauret, 2017), and increase bacterial resistance to bactericides (Ghannoum et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Impacts of hydrodynamic conditions and microscale surface roughness on the critical shear stress to develop and thickness of early‐stage Pseudomonas putida biofilms

Wei

Yang

2023

Biotech & Bioengineering

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Biofilms can increase pathogenic contamination of drinking water, cause biofilm‐related diseases, alter the sediment erosion rate, and degrade contaminants in wastewater. Compared with mature biofilms, biofilms in the early‐stage have been shown to be more susceptible to antimicrobials and easier to remove. Mechanistic understanding of physical factors controlling early‐stage biofilm growth is critical to predict and control biofilm development, yet such understanding is currently incomplete. Here, we reveal the impacts of hydrodynamic conditions and microscale surface roughness on the development of early‐stage Pseudomonas putida biofilm through a combination of microfluidic experiments, numerical simulations, and fluid mechanics theories. We demonstrate that early‐stage biofilm growth is suppressed under high flow conditions and that the local velocity for early‐stage P. putida biofilms (growth time < 14 h) to develop is about 50 μm/s, which is similar to P. putida's swimming speed. We further illustrate that microscale surface roughness promotes the growth of early‐stage biofilms by increasing the area of the low‐flow region. Furthermore, we show that the critical average shear stress, above which early‐stage biofilms cease to form, is 0.9 Pa for rough surfaces, three times as large as the value for flat or smooth surfaces (0.3 Pa). The important control of flow conditions and microscale surface roughness on early‐stage biofilm development, characterized in this study, will facilitate future predictions and managements of early‐stage P. putida biofilm development on the surfaces of drinking water pipelines, bioreactors, and sediments in aquatic environments.

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Section: Introductionmentioning

confidence: 99%

Impacts of hydrodynamic conditions and microscale surface roughness on the critical shear stress to develop and thickness of early‐stage Pseudomonas putida biofilms

Wei

Yang

2023

Biotech & Bioengineering

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Section: Discussionmentioning

confidence: 99%

“…Significant positive correlations between tetracycline-resistant E. coli and phytoplankton pigments, especially chlorophyll, may indicate that resistance may be related to the abundance of phytoplankton. More work is needed to elucidate relationships in antibiotic resistance between fecal microbes and phytoplankton existing in the same waterbodies, as the transfer of genes between groups appears possible [58][59][60].…”

Section: Discussionmentioning

confidence: 99%

“…The prevalence of resistant E. coli may be expected to increase after recent or heavy rainfalls [1,60]. The 29 September 2022 sampling date contained the largest proportions of tetracycline-resistant E. coli in the surface samples, and this date had the greatest separation from rainfall (17 days), which may indicate that another process such as horizontal gene transfer may be responsible for higher resistance percentages [60]. Future research would benefit from incorporating sampling conducted in both wet and dry conditions as well as expanding the selection of study sites, incorporating the study of additional antibiotics, and assessing resistance to clinically relevant antibiotics such as cefotaxime or vancomycin.…”

Section: Discussionmentioning

confidence: 99%

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Spatial Variation of Tetracycline-Resistant E. coli and Relationships with Water Quality Variables in Irrigation Water: A Pilot Study

Stocker

Smith

Pachepsky

2023

Applied Microbiology

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Irrigation waters may facilitate the spread of antibiotic-resistant bacteria or genes to humans and animals. Monitoring of resistance in irrigated waters has become common; however, many studies do not incorporate a spatial component into sampling designs. The objective of this work was to assess spatiotemporal variations in tetracycline-resistant E. coli in an irrigation pond. Water samples were collected at 10 locations and two different water depths, and in situ and laboratory water quality measurements were performed. The percentage of E. coli resistant to the low (4 μg mL−1) and high (16 μg mL−1) tetracycline doses varied by date and location but were observed to be as high as 12.7% and 6.3% of the total population throughout the study, respectively. While significant differences were not observed between resistance levels measured at different depths, on one date resistant E. coli were only detected in samples collected at depth. Nitrate, fluorescent dissolved organic matter, and dissolved oxygen concentrations were found to be the leading control variables for the percentage of resistant E. coli. This work demonstrates that there may be substantial spatial variability in concentrations of antibiotic-resistant E. coli in irrigation ponds which should be accounted for in the design of monitoring programs.

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“…This indicates that antimicrobial contamination accelerates "ARG communication" in different niches of aquatic systems. These findings come as no surprise, as the organic material secreted by algae constantly attracts bacteria from the aquatic environments into the algae phycosphere, 52 resulting in the monodirectional transmission pathways of ARG-carrying bacteria. However, under the selective pressure of antibiotics, the decrease in the diversity of algae-associated microbiome is accompanied by the shedding of some taxa maladaptive in the phycosphere, resulting in the adherent ARGs being transferred into the surrounding environments.…”

Section: Antibiotics Induced Enhancement Of Algae Niches' Potential F...mentioning

confidence: 95%

Antibiotic-Induced Recruitment of Specific Algae-Associated Microbiome Enhances the Adaptability of Chlorella vulgaris to Antibiotic Stress and Incidence of Antibiotic Resistance

Xue,

Su,

Zhou

et al. 2023

Environ. Sci. Technol.

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Interactions of E. coli with algae and aquatic vegetation in natural waters

Cited by 30 publications

References 187 publications

Impacts of hydrodynamic conditions and microscale surface roughness on the critical shear stress to develop and thickness of early‐stage Pseudomonas putida biofilms

Impacts of hydrodynamic conditions and microscale surface roughness on the critical shear stress to develop and thickness of early‐stage Pseudomonas putida biofilms

Spatial Variation of Tetracycline-Resistant E. coli and Relationships with Water Quality Variables in Irrigation Water: A Pilot Study

Antibiotic-Induced Recruitment of Specific Algae-Associated Microbiome Enhances the Adaptability of Chlorella vulgaris to Antibiotic Stress and Incidence of Antibiotic Resistance

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