Response of submerged macrophytes and leaf biofilms to different concentrations of oxytetracycline and sulfadiazine

Zhang, Hao; Ge, Zuhan; Li, Yaguang; Huang, Shihua; Zhang, Jibiao; Zhang, Zheng

doi:10.1016/j.chemosphere.2022.136098

Cited by 8 publications

(3 citation statements)

References 50 publications

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“…in both plants, SOD concentration decreased. SOD concertation also showed different trends in plants under control compared with different antibiotic concentrations [51]. All treatment groups showed a considerable reduction in CAT activity relative to the control group.…”

Section: Resultsmentioning

confidence: 89%

The Responses of Invasive Wedelia trilobata and Native Wedelia chinensis to Levofloxacin Hydrochloride: Implication for Biological Invasion

Huang¹,

Wang²,

Zhang³

et al. 2023

Pol. J. Environ. Stud.

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Invasion of alien plants has become a global problem, and antibiotics, a new pollutant, have received widespread attention. We hypothesized that different concentration levels of Levofloxacin hydrochloride facilitate different physiological, growth and antioxidant system responses in W. trilobata and W. chinensis. The toxicity of Levofloxacin hydrochloride was assessed in W. trilobata and W. chinensis through physiological, chlorophyll, and antioxidant system. Compared with single species, the two plants were more susceptible to the influence of levofloxacin hydrochloride when mixed; in sand culture, levofloxacin hydrochloride affected physiological parameters (leave size, number of leaves, plant height, stem length, and dry weight biomass). The exogenous addition of levofloxacin significantly restricted the root development of plants, especially in the case of hydroponics. Both plants showed prominent oxidative stress characteristics that leaves yellowed and withered, as well as showed on photosynthesis and antioxidant system. SOD presents different trends under different experiment units. CAT activity showed a significant decrease in all treatment groups. No significant difference observed in POD activity between both plants under sand culture conditions, and it increased after Levofloxacin hydrochloride application. Overall,our results revealed that invasive W. trilobata adapted well against Levofloxacin hydrochloride with better growth and antioxidant system, which strengthens the biological invasion process.

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Section: Resultsmentioning

confidence: 89%

The Responses of Invasive Wedelia trilobata and Native Wedelia chinensis to Levofloxacin Hydrochloride: Implication for Biological Invasion

Huang¹,

Wang²,

Zhang³

et al. 2023

Pol. J. Environ. Stud.

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“…Additionally, within group A, the relative abundance of Zoogloea and Azohydromonas was relatively high. Zoogloea can promote the production of EPSs [38], and Azohydromonas mainly functions in alkalinization, with alkaline conditions being favorable for EPS growth. The pH value in group A was indeed significantly higher than in the other two groups, and this may be the main reason for the significant initial rise in EPS content under conditions of a low gas-to-water ratio (Figures 1c and 2).…”

Section: Microbial Community Diversitymentioning

confidence: 99%

Impact of Gas-to-Water Ratio on Treatment Efficiency of Submerged-Macrophyte Constructed Wetland Systems

Mao,

Lu,

Huang

et al. 2024

Water

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Constructed wetland systems employing submerged macrophytes are increasingly utilized for treating municipal and industrial wastewater, as well as odoriferous and eutrophic water bodies. However, the pollutant removal efficiency of these systems needs further enhancement. In this study, we examined the impact of the gas-to-water ratio on the treatment efficiency of the constructed wetland of Vallisneria. We also examined the extracellular polymeric substances (EPSs) of the floating biofilm and the structure of the microbial community in this system. Our findings showed that the gas-to-water ratio significantly affects the total nitrogen (TN) removal rate within the Vallisneria wetlands, with an optimum removal at a gas-to-water ratio of 15:1, while the removal efficiencies for chemical oxygen demand (COD), NH4+-N, and total phosphorus (TP) remain relatively unaffected. Increased gas-to-water ratios corresponded to a notable decrease in biofilm EPSs. High-throughput sequencing analysis demonstrated a shift in biofilm-denitrifying bacteria from anoxic heterotrophic to aerobic denitrifiers, alongside a significant rise in the abundance of denitrifying bacteria, whereas excessively high gas-to-water ratios inhibited the growth of these bacteria. A gas-to-water ratio of 15:1 constituted the optimal condition for ecological restoration of the water body within the Vallisneria wetland systems. These results could contribute to the optimization of submerged-macrophyte constructed wetland system design and the enhancement of treatment efficiency.

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“…Some of the existing bacterial removal mechanisms, such as physical retention, predation, oxygen release into the rhizosphere, the activity of attached bacteria in the macrophyte roots, or the ability of some helophytes to crea root exudates that inhibit bacterial growth, have been studied before (Ravindra et al, 2021). In free-water systems with surface flow, the hydraulic conductivity, of both the gravel bed and the rhizosphere zone, is negligible (Shingare et al, 2019), and the main role of macrophytes is to provide an extra surface for the development of the biofilm on the plant submerged parts (Zhang et al, 2022). In those systems with sub-surface water flow, the hydraulic conductivity of the substrate is an important design parameter to consider.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Contaminants Removal Efficiencies in Wastewater Using Constructed Wetlands of Single and Two Stages

Cifuentes,

Rivera,

Paiz

et al. 2023

Rev. AIDIS ing. cienc. ambient.

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Constructed wetlands are green technologies, nature-based solutions, that use phytoremediation for the treatment of wastewater studied in domestic, industrial, and agricultural uses and products such as hydrocarbons and some emerging pollutants. The objective is to analyze the efficiency of the constructed wetlands for the removal of heavy metals, nutrients such as phosphorus, and nitrogen in wastewater treatment. This study presents the results of contaminant removal from two types of constructed wetlands; single-stage and two-stage, which determine their efficiency. The removal of COD, BOD, phosphorus, fats, nitrogen, solids and others, showed similar efficiencies for each plant, with removal ranges between 16% and 95% relative to each pollutant analyzed. As a complement, the concentration of heavy chromium VI, cadmium, and total iron were reduced and analized thlrough the UV-VIS spectrophotometric method, which from three absorbance measurements for each metal, with wavelengths of 540 nm, 228 nm, 8 nm, and 510 nm, respectively, efficiencies of 62% and 85% were found for chromium VI removal; 43% and 53% removal for cadmium; 37% and 53% removal for total iron, results according to single-stage and two-stage plants.

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Response of submerged macrophytes and leaf biofilms to different concentrations of oxytetracycline and sulfadiazine

Cited by 8 publications

References 50 publications

The Responses of Invasive <i>Wedelia trilobata</i> and Native <i>Wedelia chinensis</i> to Levofloxacin Hydrochloride: Implication for Biological Invasion

The Responses of Invasive <i>Wedelia trilobata</i> and Native <i>Wedelia chinensis</i> to Levofloxacin Hydrochloride: Implication for Biological Invasion

Impact of Gas-to-Water Ratio on Treatment Efficiency of Submerged-Macrophyte Constructed Wetland Systems

Comparison of Contaminants Removal Efficiencies in Wastewater Using Constructed Wetlands of Single and Two Stages

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