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Gu M, Wang Q, Fan R, Liu S, Zhu F, Feng G, Zhang J. Isolation, Characterization and Antibacterial Activity of 4-Allylbenzene-1,2-diol from Piper austrosinense. Molecules 2023; 28:molecules28083572. [PMID: 37110806 PMCID: PMC10146670 DOI: 10.3390/molecules28083572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/15/2023] [Accepted: 04/16/2023] [Indexed: 04/29/2023] Open
Abstract
Isolation for antibacterial compounds from natural plants is a promising approach to develop new pesticides. In this study, two compounds were obtained from the Chinese endemic plant Piper austrosinense using bioassay-guided fractionation. Based on analyses of 1H-NMR, 13C-NMR, and mass spectral data, the isolated compounds were identified as 4-allylbenzene-1,2-diol and (S)-4-allyl-5-(1-(3,4-dihydroxyphenyl)allyl)benzene-1,2-diol. 4-Allylbenzene-1,2-diol was shown to have strong antibacterial activity against four plant pathogens, including Xanthomonas oryzae pathovar oryzae (Xoo), X. axonopodis pv. citri (Xac), X. oryzae pv. oryzicola (Xoc) and X. campestris pv. mangiferaeindicae (Xcm). Further bioassay results exhibited that 4-allylbenzene-1,2-diol had a broad antibacterial spectrum, including Xoo, Xac, Xoc, Xcm, X. fragariae (Xf), X. campestris pv. campestris (Xcc), Pectobacterium carotovorum subspecies brasiliense (Pcb) and P. carotovorum subsp. carotovorum (Pcc), with minimum inhibitory concentration (MIC) values ranging from 333.75 to 1335 μmol/L. The pot experiment showed that 4-allylbenzene-1,2-diol exerted an excellent protective effect against Xoo, with a controlled efficacy reaching 72.73% at 4 MIC, which was superior to the positive control kasugamycin (53.03%) at 4 MIC. Further results demonstrated that the 4-allylbenzene-1,2-diol damaged the integrity of the cell membrane and increased cell membrane permeability. In addition, 4-allylbenzene-1,2-diol also prevented the pathogenicity-related biofilm formation in Xoo, thus limiting the movement of Xoo and reducing the production of extracellular polysaccharides (EPS) in Xoo. These findings suggest the value of 4-allylbenzene-1,2-diol and P. austrosinense could be as promising resources for developing novel antibacterial agents.
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Affiliation(s)
- Mengxuan Gu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
| | - Qin Wang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
| | - Rui Fan
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences (CATAS), Wanning 571533, China
| | - Shoubai Liu
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Ministry of Education, Hainan Key Laboratory for Biology of Tropical Specific Ornamental Plants Germplasm, School of Forestry, Hainan University, Haikou 570228, China
| | - Fadi Zhu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
| | - Gang Feng
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
| | - Jing Zhang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
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Strayer-Scherer A, Timilsina S, Liao YY, Young M, Rosskopf EN, Vallad GE, Goss EM, Santra S, Jones JB, Hong JC, Paret ML. Simulated Leaching of Foliar Applied Copper Bactericides on the Soil Microbiome Utilizing Various Beta Diversity Resemblance Measurements. Microbiol Spectr 2022; 10:e0148121. [PMID: 35536029 PMCID: PMC9241806 DOI: 10.1128/spectrum.01481-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/04/2022] [Indexed: 11/20/2022] Open
Abstract
Copper bactericides are routinely used to control Xanthomonas perforans (XP), causal agent of bacterial spot of tomato. Given the widespread tolerance to copper in XP strains in FL, USA, nanotechnology-based elemental composites have gained interest for their potential applications in agriculture in part due to their enhanced antimicrobial properties and toxicity to copper-tolerant strains. However, little is known about the potential impact of conventional copper bactericides as well as nano-based elemental composites on soil microbial communities, as determined by high-throughput sequencing of the 16S rDNA. We compared the effects of 2 and 200 μg/mL of core-shell (CS), a metallic copper composite, and a conventional copper bactericide + mancozeb (Cu+Man) on the soil microbiome. These treatments were compared to three controls, the microbial profile of the soil prior to application of copper products, a water application, and spiking the soil with a soilborne phytobacterium, Ralstonia solanacearum (RS). The RS treatment was included to determine if downstream analysis could detect the artificial inoculation. Utilizing multiple β diversity measurements, each emphasizing various tenets of ecology, provided a greater perspective of the effects the treatments had on the microbiome. Analysis of HTS data revealed that the two treatments containing field applied rates of metallic copper, CS 200 and Cu+Man, had the largest impact on the soil microbiome at seven-days posttreatment compared to water. However, we simulated field applied rates of CS 200 entering the soil by treating soil with CS 2 and determined this concentration had a negligible effect on the soil microbiome. IMPORTANCE Nanotechnology-based elemental composites have gained popularity for their potential applications in plant disease management due to their enhanced antimicrobial properties. However, little is known about their potential impact on the environment. Foliar applications of nano metallic composites upon leaching into the soil have the potential to impact soil microbial populations that in turn influence soil health. Utilizing multiple β diversity measurements, high-throughput sequencing analysis revealed that field applied rates of metallic copper (200 μg/mL) from an advanced copper composite (core-shell [CS]) and a conventional copper bactericide in combination with mancozeb had the largest impact on the soil microbiome compared to water and nontreated control. To simulate leaching from the leaf surface, a lower concentration (2 μg/mL) of CS was also applied to the soil and had a negligible effect on the soil microbiome. Thus, field applied rates of CS may have a minimal effect on soil microbial communities.
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Affiliation(s)
- A. Strayer-Scherer
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
- Department of Entomology and Plant Pathology, Auburn University, Auburn, Alabama, USA
| | - S. Timilsina
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
| | - Y. Y. Liao
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
| | - M. Young
- NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando, Florida, USA
| | - E. N. Rosskopf
- USDA ARS, United States Horticultural Research Laboratory, Fort Pierce, Florida, USA
| | - G. E. Vallad
- Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma, Florida, USA
| | - E. M. Goss
- Department of Plant Pathology and Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA
| | - S. Santra
- NanoScience Technology Center, Department of Chemistry, Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando, Florida, USA
| | - J. B. Jones
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
| | - J. C. Hong
- USDA ARS, United States Horticultural Research Laboratory, Fort Pierce, Florida, USA
| | - M. L. Paret
- Department of Plant Pathology, North Florida Research and Education Center, University of Florida, Quincy, Florida, USA
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Liao YY, Huang Y, Carvalho R, Choudhary M, Da Silva S, Colee J, Huerta A, Vallad GE, Freeman JH, Jones JB, Keller A, Paret ML. Magnesium Oxide Nanomaterial, an Alternative for Commercial Copper Bactericides: Field-Scale Tomato Bacterial Spot Disease Management and Total and Bioavailable Metal Accumulation in Soil. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:13561-13570. [PMID: 34291924 DOI: 10.1021/acs.est.1c00804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Copper (Cu) is the most extensively used bactericide worldwide in many agricultural production systems. However, intensive application of Cu bactericide have increased the selection pressure toward Cu-tolerant pathogens, including Xanthomonas perforans, the causal agent of tomato bacterial spot. However, alternatives for Cu bactericides are limited and have many drawbacks including plant damage and inconsistent effectiveness under field conditions. Also, potential ecological risk on nontarget organisms exposed to field runoff containing Cu is high. However, due to lack of alternatives for Cu, it is still widely used in tomato and other crops around the world in both conventional and organic production systems. In this study, a Cu-tolerant X. perforans strain GEV485, which can tolerate eight tested commercial Cu bactericides, was used in all the field trials to evaluate the efficacy of MgO nanomaterial. Four field experiments were conducted to evaluate the impact of intensive application of MgO nanomaterial on tomato bacterial spot disease severity, and one field experiment was conducted to study the impact of soil accumulation of total and bioavailable Cu, Mg, Mn, and Zn. In the first two field experiments, twice-weekly applications of 200 μg/mL MgO significantly reduced disease severity by 29-38% less in comparison to a conventional Cu bactericide Kocide 3000 and 19-30% less in comparison to the water control applied at the same frequency (p = 0.05). The disease severity on MgO twice-weekly was 12-32% less than Kocide 3000 + Mancozeb treatment. Single weekly applications of MgO had 13-19% higher disease severity than twice weekly application of MgO. In the second set of two field trials, twice-weekly applications of MgO at 1000 μg/mL significantly reduced disease severity by 32-40% in comparison to water control applied at the same frequency (p = 0.05). There was no negative yield impact in any of the trials. The third field experiment demonstrated that application of MgO did not result in significant accumulation of total and bioavailable Mg, Mn, Cu, or Zn in the root-associated soil and in soil farther away from the production bed compared to the water control. However, Cu bactericide contributed to significantly higher Mn, Cu, and Zn accumulation in the soil compared to water control (p = 0.05). This study demonstrates that MgO nanomaterial could be an alternative for Cu bactericide and have potential in reducing risks associated with development of tolerant strains and for reducing Cu load in the environment.
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Affiliation(s)
- Ying-Yu Liao
- Plant Pathology Department, North Florida Research and Education Center, University of Florida, Quincy, Florida 32351, United States
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, United States
| | - Yuxiong Huang
- Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106-5131, United States
- Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Renato Carvalho
- Plant Pathology Department, North Florida Research and Education Center, University of Florida, Quincy, Florida 32351, United States
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, United States
| | - Manoj Choudhary
- Plant Pathology Department, North Florida Research and Education Center, University of Florida, Quincy, Florida 32351, United States
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, United States
| | - Susannah Da Silva
- Plant Pathology Department, North Florida Research and Education Center, University of Florida, Quincy, Florida 32351, United States
| | - James Colee
- Statistical Consulting Unit, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, Florida 32611, United States
| | - Alejandra Huerta
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, North Carolina 27695-7613, United States
| | - Gary E Vallad
- Gulf Coast Research and Education Center, University of Florida, Wimauma, Florida 33598, United States
| | - Joshua H Freeman
- Plant Pathology Department, North Florida Research and Education Center, University of Florida, Quincy, Florida 32351, United States
| | - Jeffrey B Jones
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, United States
| | - Arturo Keller
- Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106-5131, United States
| | - Mathews L Paret
- Plant Pathology Department, North Florida Research and Education Center, University of Florida, Quincy, Florida 32351, United States
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, United States
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Smith SL, Campos MGN, Ozcan A, Mendis HC, Young M, Myers ME, Atilola M, Doomra M, Thwin Z, Johnson EG, Santra S. Multifunctional Surface, Subsurface, and Systemic Therapeutic (MS3T) Formulation for the Control of Citrus Canker. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10807-10818. [PMID: 34505777 DOI: 10.1021/acs.jafc.1c03323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A multifunctional surface, subsurface and systemic therapeutic (MS3T) formulation comprised of two bactericides, both didecyldimethylammonium chloride (DDAC) and a zinc (Zn)-chelate, was developed as an alternative to copper pesticides for crop protection. Agricultural grade chemicals were used to prepare MS3T formulations. Minimal inhibitory concentration (MIC) was determined to be tested in vitro against Xanthomonas alfalfae subsp. citrumelonis (herein called Xa), Escherichia coli (E. coli), and Pseudomonas syringae (Ps). Assessment of the phytotoxic potential was carried out on tomato under greenhouse conditions. Moreover, field trials were conducted during three consecutive years on grapefruit (Chrysopelea paradise) groves to evaluate efficacy against citrus canker (Xanthomonas citri subsp. citri), scab (Elsinoe fawcetti), and melanose (Diaporthe citri). In addition to disease control, improvements to both fruit yield and quality were observed likely due to the nutritional activity of MS3T via the sustained release of plant nutrients (Zn and nitrogen). Zn residues of leaf tissues were analyzed via atomic absorption spectroscopy (AAS) at various time points before and after MS3T foliar applications throughout the duration of the 2018 field trial. Field trial results demonstrated MS3T to be an effective alternative to copper (Cu)-based formulations for the control of citrus canker.
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Affiliation(s)
| | | | | | | | | | - Monty E Myers
- Indian River Research and Education Center, University of Florida, 2199 South Rock Road, Fort Pierce, Florida 34945, United States
| | | | | | | | - Evan G Johnson
- Citrus Research and Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, Florida 33850, United States
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Ozcan A, Young M, Lee B, Liao YY, Da Silva S, Godden D, Colee J, Huang Z, Mendis HC, Campos MGN, Jones JB, Freeman JH, Paret ML, Tetard L, Santra S. Copper-fixed quat: a hybrid nanoparticle for application as a locally systemic pesticide (LSP) to manage bacterial spot disease of tomato. NANOSCALE ADVANCES 2021; 3:1473-1483. [PMID: 36132859 PMCID: PMC9417342 DOI: 10.1039/d0na00917b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/21/2021] [Indexed: 05/31/2023]
Abstract
The development of bacterial tolerance against pesticides poses a serious threat to the sustainability of food production. Widespread use of copper (Cu)-based products for plant disease management has led to the emergence of copper-tolerant pathogens such as Xanthomonas perforans (X. perforans) strains in Florida, which is very destructive to the tomato (Solanum lycopersicum) industry. In this study, we report a hybrid nanoparticle (NP)-based system, coined Locally Systemic Pesticide (LSP), which has been designed for improved efficacy compared to conventional Cu-based bactericides against Cu-tolerant X. perforans. The silica core-shell structure of LSP particles makes it possible to host ultra-small Cu NPs (<10 nm) and quaternary ammonium (Quat) molecules on the shell. The morphology, release of Cu and Quat, and subsequent in vitro antimicrobial properties were characterized for LSP NPs with core diameters from 50 to 600 nm. A concentration of 4 μg mL-1 (Cu): 1 μg mL-1 (Quat) was found to be sufficient to inhibit the growth of Cu-tolerant X. perforans compared to 100 μg mL-1 (metallic Cu) required with standard Kocide 3000. Wetting properties of LSP exhibited contact angles below 60°, which constitutes a significant improvement from the 90° and 85° observed with water and Kocide 3000, respectively. The design was also found to provide slow Cu release to the leaves upon water washes, and to mitigate the phytotoxicity of water-soluble Cu and Quat agents. With Cu and Quat bound to the LSP silica core-shell structure, no sign of phytotoxicity was observed even at 1000 μg mL-1 (Cu). In greenhouse and field experiments, LSP formulations significantly reduced the severity of bacterial spot disease compared to the water control. Overall, the study highlights the potential of using LSP particles as a candidate for managing tomato bacterial spot disease and beyond.
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Affiliation(s)
- Ali Ozcan
- Department of Chemistry, University of Central Florida Orlando FL 32826 USA +1 407-882-2848
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Vocational School of Technical Sciences, Karamanoglu Mehmetbey University 70200 Karaman Turkey
| | - Mikaeel Young
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Burnett School of Biomedical Sciences, University of Central Florida Orlando FL 32826 USA
| | - Briana Lee
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Ying-Yu Liao
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
- North Florida Research and Education Center, University of Florida Quincy FL 32351 USA
| | - Susannah Da Silva
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Dylan Godden
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - James Colee
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Ziyang Huang
- Department of Chemistry, University of Central Florida Orlando FL 32826 USA +1 407-882-2848
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Hajeewaka C Mendis
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Maria G N Campos
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Jeffrey B Jones
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Joshua H Freeman
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Mathews L Paret
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
- North Florida Research and Education Center, University of Florida Quincy FL 32351 USA
| | - Laurene Tetard
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Department of Physics, University of Central Florida Orlando FL 32826 USA
| | - Swadeshmukul Santra
- Department of Chemistry, University of Central Florida Orlando FL 32826 USA +1 407-882-2848
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Burnett School of Biomedical Sciences, University of Central Florida Orlando FL 32826 USA
- Department of Materials Science and Engineering, University of Central Florida Orlando FL 32826 USA
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Wang PY, Xiang M, Luo M, Liu HW, Zhou X, Wu ZB, Liu LW, Li Z, Yang S. Novel piperazine-tailored ursolic acid hybrids as significant antibacterial agents targeting phytopathogens Xanthomonas oryzae pv. oryzae and X. axonopodis pv. citri probably directed by activation of apoptosis. PEST MANAGEMENT SCIENCE 2020; 76:2746-2754. [PMID: 32187443 DOI: 10.1002/ps.5822] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/11/2020] [Accepted: 03/18/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Induced apoptosis is an effective technique that can reprogram cellular physiological and pathological processes to eradicate undesirable cells using their innate systems. Inspired by this, numerous apoptosis inducers have been developed to treat animal diseases, especially in the anticancer field. However, few studies have reported on the development of inductive agents that attack plant pathogens by activation of apoptosis. With the aim of exploring and discovering apoptosis inducers that target phytopathogens, a cluster of piperazine-tailored ursolic acid (UA) hybrids was systematically fabricated. RESULTS In vitro testing showed that the title molecules could inhibit the growth of two intractable bacterial strains, defined as Xanthomonas oryzae pv. oryzae and X. axonopodis pv. citri. The corresponding lowest EC50 values were 0.37 and 1.08 μg mL-1 , which exceed those of UA (>400 μg mL-1 ) and positive controls. Moreover, compounds 5u and 5v could manage bacterial blight in vivo using pot experiments. Flow cytometer analysis indicted that the title compounds could induce distinct apoptotic behaviors on tested bacteria. In-depth study revealed that the introduction of designed compounds could reduce the enzyme activities of catalase and superoxide dismutase, subsequently leading to the accumulation of reactive oxygen species. CONCLUSION This study promoted the development of apoptosis initiators for managing bacterial infections in agriculture by an innovative mode of action. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Pei-Yi Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Meng Xiang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Min Luo
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Hong-Wu Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Xiang Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Zhi-Bing Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Li-Wei Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Zhong Li
- College of Pharmacy, East China University of Science & Technology, Shanghai, China
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
- College of Pharmacy, East China University of Science & Technology, Shanghai, China
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Diaz D, Church J, Young M, Kim KT, Park J, Hwang YB, Santra S, Lee WH. Silica-quaternary ammonium "Fixed-Quat" nanofilm coated fiberglass mesh for water disinfection and harmful algal blooms control. J Environ Sci (China) 2019; 82:213-224. [PMID: 31133266 DOI: 10.1016/j.jes.2019.03.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
Intensification of pollution loading worldwide has promoted an escalation of different types of disease-causing microorganisms, such as harmful algal blooms (HABs), instigating detrimental impacts on the quality of receiving surface waters. Formation of unwanted disinfection by-products (DBPs) resulting from conventional disinfection technologies reveals the need for the development of new sustainable alternatives. Quaternary Ammonium Compounds (QACs) are cationic surfactants widely known for their effective biocidal properties at the ppm level. In this study, a novel silica-based antimicrobial nanofilm was developed using a composite of silica-modified QAC (Fixed-Quat) and applied to a fiberglass mesh as an active surface via sol-gel technique. The synthesized Fixed-Quat nanocoating was found to be effective against E. coli with an inactivation rate of 1.3 × 10-3 log reduction/cm min. The Fixed-Quat coated fiberglass mesh also demonstrated successful control of Microcystis aeruginosa with more than 99% inactivation after 10 hr of exposure. The developed antimicrobial mesh was also evaluated with wild-type microalgal species collected in a water body experiencing HABs, obtaining a 97% removal efficiency. Overall, the silica-functionalized Fixed-Quat nanocoating showed promising antimicrobial properties for water disinfection and HABs control, while decreasing concerns related to DBPs formation and the possible release of toxic nanomaterials into the environment.
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Affiliation(s)
- Daniela Diaz
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, USA.
| | - Jared Church
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, USA
| | - Mikaeel Young
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Orlando, FL 32826, USA; Burnett School of Biomedical Sciences, University of Central Florida, 6850 Lake Nona Blvd, Orlando, FL 32827, USA
| | - Keug Tae Kim
- Department of Environmental & Energy Engineering, Suwon University, 17 Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 445-743, Republic of Korea
| | - Jungsu Park
- K-water Institute, Korea Water Resources Corporation, 200 Sintanjin-Ro, Daedeok-Gu, Daejeon 34350, Republic of Korea
| | - Yun Bin Hwang
- Department of Environmental & Energy Engineering, Suwon University, 17 Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 445-743, Republic of Korea
| | - Swadeshmukul Santra
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Orlando, FL 32826, USA; Burnett School of Biomedical Sciences, University of Central Florida, 6850 Lake Nona Blvd, Orlando, FL 32827, USA; Department of Material Science and Engineering, 4000 Central Florida Blvd, University of Central Florida, Orlando, FL 32816, USA; Department of Chemistry, 4111 Libra Drive, University of Central Florida, Orlando, FL 32816, USA
| | - Woo Hyoung Lee
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, USA.
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