Occurrence, spatiotemporal dynamics, and ecological risk of fungicides in a reservoir-regulated basin

Zhu, Jing; Ouyang, Wei; Guo, Zewei; Liu, Xitao; He, Mengchang; Li, Qin; Liu, Huiji; Lin, Chunye

doi:10.1016/j.envint.2022.107697

Cited by 12 publications

(4 citation statements)

References 78 publications

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“…However, some are confined to regions and do not have a country-wide monitoring approach, like in this work. The most frequently detected fungicides in the EU were azoxystrobin, boscalid (UK, Germany and The Netherlands), carbendazim, metalaxyl, tebuconazole (Germany and The Netherlands), propiconazole (Germany) or tricyclazole (Spain) [45,64,66,67]. Except for boscalid, all other fungicides were found in our survey.…”

Section: Discussionmentioning

confidence: 64%

“…Contrasting, fungicides are responsible for residues reported worldwide in surface waters and other environmental matrices at higher and year-long varying concentrations [44]. For instance, Jing Zhu et al detected concentrations of total fungicides in surface water which were significantly increased in September (median = 161.82 ng/L) compared to April (median = 25.47 ng/L) and November (median = 65.49 ng/L) [45].…”

Section: Discussionmentioning

confidence: 99%

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Survey of Antifungal in Surface- and Groundwater: A Portuguese Environmental Case Study

De Mello-Sampayo,

Viana,

Lopes

et al. 2024

Sustainability

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Antifungals support modern medical and agricultural practices, and extensive screening environmental data are missing. This work aims to survey antifungals for medical and agricultural purposes in surface- and groundwater in Portugal. A passive sampling technique and a high-resolution chromatographic system were used. Antifungals applied in medical practice were not detected as only antifungals for agricultural purposes (fungicides). Thirty-nine different fungicide molecules were found; its detection frequency in surface- and groundwater was dominated by rabenzazole (61%, 92%) and ethoxyquin (54%, 77%); among the five fungicides with similar surface- and groundwater catching rates, ferimzone was the most polluting (54%, 54%); oxadixyl (61%), kresoxim-methyl (61%) and fenamidone (46%) were primarily designated surface water contaminants; for azoles, the occurrence in surface water ranged from a residual (10%) to a moderate detection rate for two compounds (31%—propiconazole and tebuconazole). Surprisingly, only 51% of detected fungicides are authorised. The frequently detected fungicides that are either not authorised (ethoxyquin and its impurity, furmecyclox, oxadixyl), without data in the EU (rabenzazole, ferimzone), or authorised at the national level (fenamidone), should be included in environmental monitoring programmes and followed as emerging (micro)contaminants. Policy makers should gather their efforts to allow the implementation of proper risk management and effective contamination control strategies to achieve Sustainable Development Goals.

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Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 99%

Survey of Antifungal in Surface- and Groundwater: A Portuguese Environmental Case Study

De Mello-Sampayo,

Viana,

Lopes

et al. 2024

Sustainability

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“…1,9 Unfortunately, the intensive and continuous utilization of common fungicides increases the risk of resistance development of the pathogen, which severely restricts the application of these fungicides. 10,11 Thus, there is an urgent need for high-efficiency, environmentally friendly, and low-toxic fungicides against R. solani. 12−14 Plants offer a rich source of antifungal active ingredients with diverse structures, low toxicity, and low residues, corresponding to modern environmental protection needs.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Many methods have been applied to control rice sheath blight, with chemical control such as fungicides being widely utilized as an effective control measure. , Unfortunately, the intensive and continuous utilization of common fungicides increases the risk of resistance development of the pathogen, which severely restricts the application of these fungicides. , Thus, there is an urgent need for high-efficiency, environmentally friendly, and low-toxic fungicides against R. solani. − …”

Section: Introductionmentioning

confidence: 99%

Antifungal Activity and Mechanism of Camphor Derivatives against Rhizoctonia solani: A Promising Alternative Antifungal Agent for Rice Sheath Blight

Zhang,

Huang,

Duan

et al. 2024

J. Agric. Food Chem.

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Rice sheath blight, caused by the fungus Rhizoctonia solani, poses a significant threat to rice cultivation globally. This study aimed to investigate the potential mechanisms of action of camphor derivatives against R. solani. Compound 4o exhibited superior fungicidal activities in vitro (EC 50 = 6.16 mg/L), and in vivo curative effects (77.5%) at 500 mg/L were significantly (P < 0.01) higher than the positive control validamycin•bacillus (66.1%). Additionally, compound 4o exhibited low cytotoxicity and acute oral toxicity for adult worker honeybees of Apis mellifera L. Mechanistically, compound 4o disrupted mycelial morphology and microstructure, increased cell membrane permeability, and inhibited both PDH and SDH enzyme activities. Molecular docking and molecular dynamics analyses indicated a tight interaction of compound 4o with PDH and SDH active sites. In summary, compound 4o exhibited substantial antifungal efficacy against R. solani, serving as a promising lead compound for further optimization of antifungal agents.

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Demethylation Inhibitor Fungicides Have a Significantly Detrimental Impact on Population Growth and Composition of Nectar Microbial Communities

Quevedo-Caraballo,

Roldán,

Álvarez-Pérez

2024

Microb Ecol

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Demethylation inhibitor (DMI) fungicides are a mainstay of modern agriculture due to their widespread use for crop protection against plant-pathogenic fungi. However, DMI residues can disperse and persist in the environment, potentially affecting non-target fungi. Previous research has demonstrated that DMIs and other fungicides inhibit yeast growth in floral nectar microbial communities and decrease fungal richness and diversity of exposed flowers with no apparent effect on bacteria. Nevertheless, the effect of DMIs on the population growth of different species of nectar inhabitants and the dynamics of these microbial communities remains understudied. To address these issues, in this study we created synthetic microbial communities including yeasts ( Metschnikowia reukaufii and Metschnikowia pulcherrima ) and bacteria ( Rosenbergiella epipactidis and Comamonas sp.) and propagated them in culture media containing different DMIs (imazalil, propiconazole, and prothioconazole) at different doses or no fungicide. Our results showed that DMIs have a significant impact on some of the most common microbial inhabitants of floral nectar by favoring the growth of bacteria over yeasts. Furthermore, habitat generalists such as M. pulcherrima and Comamonas sp. were more impacted by the presence of fungicides than the nectar specialists M. reukaufii and R. epipactidis , especially upon dispersal across habitat patches. Future research should determine if the patterns observed in the present study hold true for other species of nectar microbes and explore the interaction between growth limitation due to fungicide presence, dispersal limitation, and other mechanisms involved in community assembly in floral nectar. Supplementary Information The online version contains supplementary material available at 10.1007/s00248-024-02477-x.

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Occurrence, spatiotemporal dynamics, and ecological risk of fungicides in a reservoir-regulated basin

Cited by 12 publications

References 78 publications

Survey of Antifungal in Surface- and Groundwater: A Portuguese Environmental Case Study

Survey of Antifungal in Surface- and Groundwater: A Portuguese Environmental Case Study

Antifungal Activity and Mechanism of Camphor Derivatives against Rhizoctonia solani: A Promising Alternative Antifungal Agent for Rice Sheath Blight

Demethylation Inhibitor Fungicides Have a Significantly Detrimental Impact on Population Growth and Composition of Nectar Microbial Communities

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