Effect of erythromycin on epiphytic bacterial communities and water quality in wetlands

Chen, Deqiang; Samwini, Abigail Mwin-nea; Manirakiza, Benjamin; Addo, Felix Gyawu; Numafo-Brempong, Lydia; Baah, Wambley Adomako

doi:10.1016/j.scitotenv.2022.159008

Cited by 4 publications

(7 citation statements)

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“…6). It should be noted that control samples showed high percentage values of metabolic pathways compared with treatment samples, consistent with our recent study (Chen et al, 2023).…”

Section: Alters the Bacterial Network Structuresupporting

confidence: 92%

“…This study suggests that submerged plants and their epiphytic bacteria reduced Cd from the overlying water after 30 days of treatment, whereas sediments are considered as sinks or repositories of various pollutants (Guo and Yang, 2016). The high Cd uptake by V. natans in this study may be due to its potential to remediate recalcitrant pollutants in constructed wetlands, while arti cial plants lack innate features facilitating them to lter pollutants into the sediments, consistent with previous reports (Chen et al, 2023;Ohore et al, 2021a). Conversely, Qiu et al (2021) revealed that arti cial plants had better performance in nutrients removal (e.g., TN, TP, NH 4 -N, and COD) than Myriophyllum Spicatum.…”

Section: Cadmium Accumulation Kinetics In Constructed Wetlandssupporting

confidence: 90%

“…The decline in microbial aggregates on submerged plants with increased Cd concentration may be attributed to the Cd toxicity and allelopathic effect (natural plants) on bacteria growth and colonization (He et al, 2021;Huang et al, 2020). Additionally, bacterial and algal cells were mostly encapsulated in an EPS structure that has been densely produced on arti cial plants (AP) and P. maackianus (P) with 0.5mg/L Cd concentration, consistent with prior reports (Chen et al, 2023;Ohore et al, 2021b). The presence of more epiphytic microbes on arti cial plants than on V. natans may be due to the arti cial plants' inability to discharge allelochemicals, which impede microbes on the plastic surface.…”

Section: Cadmium Accumulation Kinetics In Constructed Wetlandssupporting

confidence: 87%

“…Arti cial plants and similar growth young leaves of V. natans and P. maackianus were indiscriminately selected for scanning electron microscope (SEM) (Hitachi, Japan, S-3400N) analysis according to our recent report (Chen et al, 2023).…”

Section: Sem Investigation For Bacterial Morphologymentioning

confidence: 99%

“…To examine bacterial communities, 16S rRNA gene primers (515 F, 5′-GTGCCAGCMGCCGGTAA-3′, and 806 R, 5′-GGACTACNVGGGTWTCTAA-3′) were employed. The Illumina sequencing procedures were performed according to our recent study (Chen et al, 2023).…”

Section: Bio Lm Collection Dna Extraction and 16s Rrna Illumina Seque...mentioning

confidence: 99%

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The impacts of cadmium exposure on epiphytic bacterial communities and water quality in mesocosmic wetlands.

Chen,

Adjei,

Samwini

et al. 2024

Preprint

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The damaging magnitudes of heavy metal pollution on freshwater ecosystems are well known, though research on the specific impacts of cadmium (Cd) on water quality and microbial communities in epiphytic biofilms is lacking. In this study, high-throughput sequencing and Scanning Electron Microscopy (SEM) were used to explore the effects of Cd on water quality and bacterial morphology, biodiversity, interactions, and ecological functions in epiphytic biofilms affixed to submerged plants that were natural and synthetic (Vallisneria natans, Potamogeton maackianus, and artificial macrophytes) in constructed wetlands. The results showed that Cd exposure significantly reduced the ability of natural and artificial plants to remove total nitrogen (TN) (5.7-50%), total phosphorus (TP) (12.5-97.1%), and chemical oxygen demand (COD) (9.45-21.8%), and affected the morphology of epiphytic bacteria. The bacterial β-diversity indices were significantly affected by Cd exposure, whereas bacterial α-diversity revealed a reverse trend. Notwithstanding Cd application induced the fluctuation (increase/decrease) in bacterial composition dynamics, but the relative abundance of Proteobacteria and Cyanobacteria spiked from 11.3-57.2% and 6.08- 94.35 %, respectively, in natural and artificial plants. Besides, Cd loading disturbed all bacterial network structures, with interactions particularly vulnerable in P. maackianus. Our study demonstrated that Cd exposure alters the bacterial diversity, food web structure, and predicted metabolic functions such as metabolism, translation, cell motility, signal transduction, membrane transport, and biodegradation of xenobiotics in epiphytic bacterial biofilms. These findings highlight the detrimental effects of Cd on epiphytic bacterial communities and nutrient removal in constructed wetlands.

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“…6). It should be noted that control samples showed high percentage values of metabolic pathways compared with treatment samples, consistent with our recent study (Chen et al, 2023).…”

Section: Alters the Bacterial Network Structuresupporting

confidence: 92%