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Huang FL, Liu M, Qin LT, Mo LY, Liang YP, Zeng HH, Deng ZG. Toxicity interactions of azole fungicide mixtures on Chlorella pyrenoidosa. ENVIRONMENTAL TOXICOLOGY 2023. [PMID: 36947457 DOI: 10.1002/tox.23782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/02/2023] [Accepted: 03/05/2023] [Indexed: 06/18/2023]
Abstract
It is acknowledged that azole fungicides may release into the environment and pose potential toxic risks. The combined toxicity interactions of azole fungicide mixtures, however, are still not fully understood. The combined toxicities and its toxic interactions of 225 binary mixtures and 126 multi-component mixtures on Chlorella pyrenoidosa were performed in this study. The results demonstrated that the negative logarithm 50% effect concentration (pEC50 ) of 10 azole fungicides to Chlorella pyrenoidosa at 96 h ranged from 4.23 (triadimefon) to 7.22 (ketoconazole), while the pEC50 values of the 351 mixtures ranged from 3.91 to 7.44. The high toxicities were found for the mixtures containing epoxiconazole. According to the results of the model deviation ratio (MDR) calculated from the concentration addition (MDRCA ), 243 out of 351 (69.23%) mixtures presented additive effect at the 10% effect, while the 23.08% and 7.69% of mixtures presented synergistic and antagonistic effects, respectively. At the 30% effect, 47.29%, 29.34%, and 23.36% of mixtures presented additive effects, synergism, and antagonism, respectively. At the 50% effect, 44.16%, 34.76%, and 21.08% of mixtures presented additive effects, synergism, and antagonism, respectively. Thus, the toxicity interactions at low concentration (10% effect) were dominated by additive effect (69.23%), whereas 55.84% of mixtures induced synergism and antagonism at high concentration (50% effect). Climbazole and imazalil were the most frequency of components presented in the additive mixtures. Epoxiconazole was the key component induced the synergistic effects, while clotrimazole was the key component in the antagonistic mixtures.
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Affiliation(s)
- Feng-Ling Huang
- College of Environment Science and Engineering, Guilin University of Technology, Guilin, China
| | - Min Liu
- College of Environment Science and Engineering, Guilin University of Technology, Guilin, China
| | - Li-Tang Qin
- College of Environment Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, China
- Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, China
| | - Ling-Yun Mo
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, China
- Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, China
- Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, Nanjing, China
| | - Yan-Peng Liang
- College of Environment Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, China
- Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, China
| | - Hong-Hu Zeng
- College of Environment Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, China
- Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, China
| | - Zhen-Gui Deng
- Hengsheng Water Environment Treatment Co., LTD., Guilin, China
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Hexaconazole-Micelle Nanodelivery System Prepared Using Different Surfactants for Ganoderma Antifungal Application. Molecules 2021; 26:molecules26195837. [PMID: 34641379 PMCID: PMC8510315 DOI: 10.3390/molecules26195837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/08/2021] [Accepted: 09/14/2021] [Indexed: 11/16/2022] Open
Abstract
Reports on fungicide-based agronanochemicals in combating disastrous basal stem rot disease in the oil palm industry are scant. Herein, we describe the potential of fungicide nanodelivery agents based on hexaconazole-micelle systems produced using three different surfactants; sodium dodecylbenze sulfonate (SDBS), sodium dodecyl sulfate (SDS) and Tween 80 (T80). The resulting nanodelivery systems were characterized and the results supported the encapsulation of the fungicide into the micelles of the surfactants. We have investigated in detail the size-dependent effects of the as-synthesized micelles towards the inhibition growth of Ganoderma Boninense fungi. All the nanodelivery systems indicate that their size decreased as the surfactant concentration was increased, and it directly affects the fungal inhibition. It was also found that Tween 80, a non-ionic surfactant gave the lowest effective concentration, the EC50 value of 2, on the pathogenic fungus Ganoderma boninense compared to the other anionic surfactants; SDBS and SDS. This study opens up a new generation of agronanofungicide of better efficacy for Ganoderma disease treatment.
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Flores F, Kaserzon S, Elisei G, Ricardo G, Negri AP. Toxicity thresholds of three insecticides and two fungicides to larvae of the coral Acropora tenuis. PeerJ 2020; 8:e9615. [PMID: 33194337 PMCID: PMC7394062 DOI: 10.7717/peerj.9615] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/06/2020] [Indexed: 12/22/2022] Open
Abstract
Tropical marine ecosystems, such as coral reefs, face several threats to their health and resilience, including poor water quality. Previous studies on the risks posed by pesticides have focused on five priority herbicides; however, as the number of pesticides applied in coastal agriculture increases, a suite of 'alternative' pesticides is being detected in tropical nearshore waters. To improve our understanding of the risks posed by alternative pesticides to tropical marine organisms, the effects of three insecticides (diazinon, fipronil, imidacloprid) and two fungicides (chlorothalonil, propiconazole) were tested on larval metamorphosis of the coral Acropora tenuis. A. tenuis larvae were affected by all five pesticides and the reference toxicant copper. The no effect concentration (NEC) and the 10% and 50% effect concentrations (EC10 and EC50, respectively) for larval metamorphosis were estimated from concentration-response curves after 48 h exposure. The NEC, EC10 and EC50 (in µg L-1), respectively, of each pesticide were as follows: chlorothalonil (2.4, 2.8, 6.0); fipronil (12.3, 13.9, 29.1); diazinon (38.0, 40.8, 54.7); imidacloprid (263, 273, 347); and propiconazole (269, 330, 1008). These toxicity thresholds are higher than reported concentrations in monitoring programs; however, these data will contribute to improving water quality guideline values, which inform the total risk assessments posed by complex contaminant mixtures to which these pesticides contribute.
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Affiliation(s)
- Florita Flores
- Australian Institute of Marine Science, Townsville, QLD, Australia
| | - Sarit Kaserzon
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, QLD, Australia
| | - Gabriele Elisei
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, QLD, Australia
| | - Gerard Ricardo
- Australian Institute of Marine Science, Townsville, QLD, Australia
| | - Andrew P. Negri
- Australian Institute of Marine Science, Townsville, QLD, Australia
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Zhang Y, Guo J, Yao T, Zhang Y, Zhou X, Chu H. The influence of four pharmaceuticals on Chlorellapyrenoidosa culture. Sci Rep 2019; 9:1624. [PMID: 30733460 PMCID: PMC6367373 DOI: 10.1038/s41598-018-36609-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 11/24/2018] [Indexed: 11/08/2022] Open
Abstract
There has been a developing technology in algae with pharmaceuticals wastewater. However, the effect and the underlying mechanism of pharmaceuticals on algae are not well understood. To investigate the effect and mechanism of pharmaceuticalson microalgae, four pharmaceuticals of clofibric acid (CLF), ciprofloxacin (CIP), diclofenac (DCF) and carbamazepine (CBZ) on C. pyrenoidosa culture were analyzed. At low concentrations (<10 mg/L), the pharmaceuticals, especially the DCF, exhibited positive effects on both the structure and function of algal cultures; algal growth (i.e., chlorophyll a accumulation, lipid accumulation) and activities of antioxidant enzymes were stimulated. The algal metabolite differences of various DCF concentrations were investigated and a total of 91 substances were identified, whose samples were clustered and clearly separated. The key metabolomics pathway analysis found that the DCF promoted the carbohydrate and fatty acid metabolic pathway in C. pyrenoidosa under relatively low concentrations (<10 mg/L). However, the algae metabolomics pathway was disturbed significantly under the action of a high concentration of DCF (>100 mg/L). The study detected the effects of four pharmaceuticals on C. pyrenoidosa and demonstrated that the usage of metabolomics analysis complemented with DCF could be an effective approach to understand the mechanism of molecular evolution in C. pyrenoidosa for microalgal biomass and bioenergy from wastewater in researches of biological resources.
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Affiliation(s)
- Yonggang Zhang
- School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Jun Guo
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China
| | - Tianming Yao
- School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China.
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China.
| | - Xuefei Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China
| | - Huaqiang Chu
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China
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Xin X, Huang G, An C, Huang C, Weger H, Zhao S, Zhou Y, Rosendahl S. Insights into the Toxicity of Triclosan to Green Microalga Chlorococcum sp. Using Synchrotron-Based Fourier Transform Infrared Spectromicroscopy: Biophysiological Analyses and Roles of Environmental Factors. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:2295-2306. [PMID: 29377676 DOI: 10.1021/acs.est.7b05533] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study investigated the toxicity of triclosan to the green microalga Chlorococcum sp. under multiple environmental stressors. The interactions between triclosan and environmental stressors were explored through full two-way factorial, synchrotron-based Fourier transform infrared spectromicroscopy and principal component analyses. Phosphorus concentration, pH * phosphorus concentration, and temperature * pH * NaCl concentration were the most statistically significant factors under triclosan exposure. The variation of those factors would have a huge impact on biophysiological performances. It is interesting to find Chlorococcum sp. may become more resistant against triclosan in phosphorus-enriched environment. Besides, particular significant factors from multiple environmental stressors showed the impacts of triclosan on the corresponding response of Chlorococcum sp. owing to the specific structure and performance of biomolecular components. Moreover, two high-order interactions of temperature * pH * NaCl concentration and temperature * pH * NaCl concentration * phosphorus concentration had more contributions than others at the subcellular level, which could be attributed to the interactive complexity of biomolecular components. Due to cellular self-regulation mechanism and short exposure time, the biophysiological changes of Chlorococcum sp. were undramatic. These findings can help reveal the interactive complexity among triclosan and multiple environmental stressors. It is suggested that multiple environmental stressors should be considered during ecological risk assessment and management of emerging pollutants.
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Affiliation(s)
| | | | - Chunjiang An
- Department of Building, Civil and Environmental Engineering, Concordia University , Montreal, Quebec, Canada H3G 1M8
| | - Charley Huang
- Department of Chemical and Biological Engineering, University of British Columbia , Vancouver, British Columbia, Canada V6T 1Z3
| | | | - Shan Zhao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University , Jinan, China 250100
| | | | - Scott Rosendahl
- Canadian Light Source, Saskatoon, Saskatchewan, Canada S7N 2 V3
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Cheng C, Di S, Chen L, Zhang W, Diao J, Zhou Z. Enantioselective Bioaccumulation, Tissue Distribution, and Toxic Effects of Myclobutanil Enantiomers in Pelophylax nigromaculatus Tadpole. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3096-3102. [PMID: 28291946 DOI: 10.1021/acs.jafc.7b00086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Research on the enantioselective behavior of chiral pesticides on amphibians has received growing attention, because amphibians are experiencing a population decline and amphibian metamorphosis shares many similarities with human fetal development. In this study, the enantioselective behavior of myclobutanil on Pelophylax nigromaculatus tadpole was studied. The antioxidant enzyme (SOD, GST) activities and malondialdehyde (MDA) content were investigated to assess the different toxic effects when tadpoles were exposed to myclobutanil enantiomers for 96 h. In the chronic exposure experiment, the bioaccumulation concentration of (-)-myclobutanil in tadpoles is significantly higher than that of (+)-myclobutanil, and the concentration of myclobutanil in tadpole intestine and liver was higher compared with other tissues. During the elimination experiment, about 95% of myclobutanil in tadpoles was eliminated within only 24 h. On the basis of these data, the enantiomeric differences should be taken into consideration in the risk assessment of myclobutanil.
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Affiliation(s)
- Cheng Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Shanshan Di
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Li Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Wenjun Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Jinling Diao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
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