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Liang Q, Hou C, Tan Y, Wei N, Sun S, Zhang S, Feng J. Construction and biological effects of a redox-enzyme dual-responsive lufenuron nano-controlled release formulation. PEST MANAGEMENT SCIENCE 2024; 80:1314-1324. [PMID: 37903714 DOI: 10.1002/ps.7862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/19/2023] [Accepted: 10/31/2023] [Indexed: 11/01/2023]
Abstract
BACKGROUND Pesticide formulations based on nanotechnology can effectively improve the efficiency of pesticide utilization and reduce pesticide residues in the environment. In this study, mesoporous silica nanoparticles containing disulfide bonds were synthesized by the sol-gel method, carboxylated and adsorbed with lufenuron, and grafted with cellulose to obtain a lufenuron-loaded nano-controlled release formulation (Luf@MSNs-ss-cellulose). RESULTS The structure and properties of Luf@MSNs-ss-cellulose were characterized. The results showed that Luf@MSNs-ss-cellulose exhibits a regular spherical shape with 12.41% pesticide loading. The highest cumulative release rate (73.46%) of this pesticide-loaded nanoparticle was observed at 7 days in the environment of glutathione and cellulase, which shows redox-enzyme dual-responsive performance. As a result of cellulose grafting, Luf@MSNs-ss-cellulose had a small contact angle and high adhesion work on corn leaves, indicating good wetting and adhesion properties. After 14 days of spraying with 20 mg L-1 formulations in the long-term control efficacy experiment, the mortality of Luf@MSNs-ss-cellulose against Ostrinia furnacalis larvae (56.67%) was significantly higher than that of commercial Luf@EW (36.67%). Luf@MSNs-ss-cellulose is safer for earthworms and L02 cells. CONCLUSION The nano-controlled release formulation obtained in this study achieved intelligent pesticide delivery in time and space under the environmental stimulation of glutathione and cellulase, providing an effective method for the development of novel pesticide delivery systems. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Qianwei Liang
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Chaoqun Hou
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Yifei Tan
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Nuo Wei
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Shaoyang Sun
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Shengfu Zhang
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Jianguo Feng
- College of Plant Protection, Yangzhou University, Yangzhou, China
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2
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Ullah N, Noureen B, Zahra QUA, Aziz T, Shehzadi S, Alfaifif MY, Elbehairif SEI, Thebo KH, Ullah A, Iqbal H. A Novel Fluorescent Aptasensor Based on Mesoporous Silica Nanoparticles
for Selective and Sensitive Detection of Saxitoxin in Shellfish. CURR ANAL CHEM 2023; 19:677-684. [DOI: 10.2174/0115734110269897231020065609] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/21/2023] [Accepted: 09/19/2023] [Indexed: 07/25/2024]
Abstract
Background:
Saxitoxin (STX) stands as one of the most potent marine biotoxins, exhibiting
high lethality. Despite its severity, current treatments remain ineffective, and existing detection
techniques are limited due to ethical concerns and technical constraints.
Methods:
Herein, an innovative approach was constructed for STX detection, utilizing mesoporous
silica nanoparticles (MSN) as a foundation. This innovative, easy, and label-free aptamer (Apt)-
sensor was fabricated. Apts were employed as molecular identification probes and "gated molecules,"
while rhodamine 6G was encapsulated within particles to serve as a signal probe. In a lack of
STX, Apts immobilized on an MSN surface kept a "gate" closed, preventing signal probe leakage.
Upon the presence of STX, the "gate" opened, allowing a particular binding of Apts to STX and a
subsequent release of a signal probe.
Results:
Experimental results demonstrated a positive correlation between fluorescence intensity and
concentrations of STX within a range of 1 to 80 nM, with an exceptional limit of detection of 0.12
nM. Furthermore, the selectivity and stability of a biosensor were rigorously evaluated, validating its
reliability.
Conclusion:
This newly developed sensing strategy exhibits remarkable performance in STX detection.
Its success holds significant promise for advancing portable STX detection equipment, thereby
addressing a pressing need for efficient and ethical detection methods in combating marine biotoxin
contamination.
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Affiliation(s)
- Najeeb Ullah
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry and Chemical Engineering, Shaanxi
Normal University, Xi’an, 710119, China
- Department of Chemical Engineering, University of Tennessee, Chattanooga,
Tennessee 37403, United States
| | - Beenish Noureen
- Department of Biophysics, Institute of Medical Engineering, School of Basic Medical
Science, Xi’an Jiaotong University Health Center, Xi’an, Shaanxi, 710061, China
| | - Qurat Ul Ain Zahra
- Biomedical Imaging Center,
University of Science and Technology of China (USTC), Hefei, China
| | - Tariq Aziz
- Faculty of Civil Engineering and Mechanics,
Jiangsu University, Zhenjiang, 212013, China
| | - Somia Shehzadi
- University Institute of Medical Laboratory Technology, The University
of Lahore, Lahore, 54000, Pakistan
| | - Mohammad Y. Alfaifif
- Department of Biology, Faculty of Science, King Khalid University, Abha, 9004,
Saudi Arabia
| | | | | | - Asmat Ullah
- Clinical Research Institute, Zhejiang
Provincial People’s Hospital, Hangzhou, 310014, Zhejiang, China
| | - Haroon Iqbal
- Zhejiang Cancer Hospital,
Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences Hangzhou, Zhejiang, 310022, China
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Tang J, Tong X, Chen Y, Wu Y, Zheng Z, Kayitmazer AB, Ahmad A, Ramzan N, Yang J, Huang Q, Xu Y. Deposition and water repelling of temperature-responsive nanopesticides on leaves. Nat Commun 2023; 14:6401. [PMID: 37828020 PMCID: PMC10570302 DOI: 10.1038/s41467-023-41878-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 09/19/2023] [Indexed: 10/14/2023] Open
Abstract
Pesticides are widely used to increase agricultural productivity, however, weak adhesion and deposition lead to low efficient utilization. Herein, we prepare a nanopesticide formulation (tebuconazole nanopesticides) which is leaf-adhesive, and water-dispersed via a rapid nanoparticle precipitation method, flash nanoprecipitation, using temperature-responsive copolymers poly-(2-(dimethylamino)ethylmethylacrylate)-b-poly(ε-caprolactone) as the carrier. Compared with commercial suspensions, the encapsulation by the polymer improves the deposition of TEB, and the contact angle on foliage is lowered by 40.0°. Due to the small size and strong van der Waals interactions, the anti-washing efficiency of TEB NPs is increased by 37% in contrast to commercial ones. Finally, the acute toxicity of TEB NPs to zebrafish shows a more than 25-fold reduction as compared to commercial formulation indicating good biocompatibility of the nanopesticides. This work is expected to enhance pesticide droplet deposition and adhesion, maximize the use of pesticides, tackling one of the application challenges of pesticides.
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Affiliation(s)
- Jie Tang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Xiaojing Tong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yongjun Chen
- Shanghai Key Lab of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yue Wu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Zhiyuan Zheng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | | | - Ayyaz Ahmad
- Department of Chemical Engineering, Muhammad Nawaz Sharif University of Engineering and Technology, Multan, Pakistan
| | - Naveed Ramzan
- Faculty of Chemical, Metallurgical, and Polymer Engineering, University of Engineering & Technology, Lahore, Pakistan
| | - Jintao Yang
- College of Materials Science & Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Qingchun Huang
- Shanghai Key Lab of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yisheng Xu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China.
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4
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Saw G, Nagdev P, Jeer M, Murali-Baskaran RK. Silica nanoparticles mediated insect pest management. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 194:105524. [PMID: 37532341 DOI: 10.1016/j.pestbp.2023.105524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 08/04/2023]
Abstract
Silicon is known for mitigating the biotic and abiotic stresses of crop plants. Many studies have proved beneficial effects of bulk silicon against biotic stresses in general and insect pests in particular. However, the beneficial effects of silica nanoparticles in crop plants against insect pests were barely studied and reported. By virtue of its physical and chemical nature, silica nanoparticles offer various advantages over bulk silicon sources for its applications in the field of insect pest management. Silica nanoparticles can act as insecticide for killing target insect pest or it can act as a carrier of insecticide molecule for its sustained release. Silica nanoparticles can improve plant resistance to insect pests and also aid in attracting natural enemies via enhanced volatile compounds emission. Silica nanoparticles are safe to use and eco-friendly in nature in comparison to synthetic pesticides. This review provides insights into the applications of silica nanoparticles in insect pest management along with discussion on its synthesis, side effects and future course of action.
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Affiliation(s)
- Gouranga Saw
- ICAR-National Institute of Biotic Stress Management, Raipur 493225, Chhattisgarh, India
| | - Priyanka Nagdev
- ICAR-National Institute of Biotic Stress Management, Raipur 493225, Chhattisgarh, India
| | - Mallikarjuna Jeer
- ICAR-National Institute of Biotic Stress Management, Raipur 493225, Chhattisgarh, India.
| | - R K Murali-Baskaran
- ICAR-National Institute of Biotic Stress Management, Raipur 493225, Chhattisgarh, India
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Wang J, Li R, Zhao Z, Zhu M, Wang Y. Bioactivity, Uptake, and Distribution of Prothioconazole Loaded on Fluorescent Double-Hollow Shelled Mesoporous Silica in Soybean Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:4521-4535. [PMID: 36896464 DOI: 10.1021/acs.jafc.3c00200] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Prothioconazole (PTC) has been widely utilized for plant fungal disease control, but its metabolite prothioconazole-desthio (PTC-d) exhibits reproductive toxicity. In the present study, carbon quantum dot (CQD)-modified fluorescent double-hollow shelled mesoporous silica nanoparticles (FL-MSNs) loaded with PTC, referred to as PTC@FL-MSNs, were constructed with an average size of 369 nm and a loading capacity of 28.1 wt %, which could increase the antifungal efficiency of PTC. In addition, upright fluorescence microscope and UPLC-MS/MS studies showed that PTC@FL-MSNs could be effectively transported via root uptake and foliar spray in soybean plants. Compared to a 30% PTC dispersible oil suspension agent, the PTC@FL-MSN treatment group showed higher concentrations (leaves: 0.50 > 0.48 mg/kg), longer half-lives for degradation (leaves: 3.62 > 3.21 d; roots: 3.39 > 2.82 d), and fewer metabolites. These findings suggest that sustained pesticide release and toxicity reduction are potential applications for PTC nanofungicide delivery technology.
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Affiliation(s)
- Jingyuan Wang
- Key Laboratory of Agri-Food Safety of Anhui Province, Department of Pesticide Science, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Rong Li
- Key Laboratory of Agri-Food Safety of Anhui Province, Department of Pesticide Science, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Zongyuan Zhao
- Key Laboratory of Agri-Food Safety of Anhui Province, Department of Pesticide Science, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Meiqing Zhu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Yi Wang
- Key Laboratory of Agri-Food Safety of Anhui Province, Department of Pesticide Science, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
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6
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He K, Yang J, Shi Q, Guan L, Sun L, Chen Z, Feng J, Dong S. Fluorescent aptamer-modified mesoporous silica nanoparticles for quantitative acetamiprid detection. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:88182-88192. [PMID: 35831655 DOI: 10.1007/s11356-022-21970-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
Acetamiprid (ACE) is widely used to control aphids, brown planthoppers, and other pests in agricultural production. However, ACE is difficult to degrade in the environment, resulting in excessive residue, which causes acute and chronic toxicity to human beings and non-target organisms. Therefore, the development of a rapid, convenient, and highly sensitive method to quantify ACE is essential. In this study, aminated mesoporous silica nanoparticles (MSNs-NH2) were synthesized by one-pot method, and 6-carboxyl fluorescein modified aptamers (FAM-Apt) of ACE were adsorbed on the surface of MSNs-NH2 by electrostatic interaction. Finally, a simple and sensitive fluorescence analysis method for the rapid detection of ACE was established. In the absence of ACE, the negatively charged FAM-Apt was electrostatically bound to the positively charged MSNs-NH2, followed by centrifugation to precipitate MSNs-NH2@FAM-Apt, and no fluorescent signal was detected in the supernatant. In the presence of ACE, the specific combination of FAM-Apt with ACE was greater than its electrostatic interaction with MSNs-NH2, so that FAM-Apt was separated from MSNs-NH2, and the supernatant had strong fluorescence signal after centrifugation. For ACE detection, the linear concentration range was 50-1100 ng/mL, and the detection limit (LOD) was 30.26 ng/mL. The method exhibited high sensitivity, selectivity and reproducibility, which is suitable for practical sample analysis and provides guidance for rapid detection of pesticide residues.
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Affiliation(s)
- Kangli He
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Jinghan Yang
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Qiuyun Shi
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Lingjun Guan
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Li Sun
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Zhiyang Chen
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Jianguo Feng
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Sa Dong
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
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7
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Xiao D, Wu H, Zhang Y, Kang J, Dong A, Liang W. Advances in stimuli-responsive systems for pesticides delivery: Recent efforts and future outlook. J Control Release 2022; 352:288-312. [PMID: 36273530 DOI: 10.1016/j.jconrel.2022.10.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 11/08/2022]
Abstract
Effective pest management for enhanced crop output is one of the primary goals of establishing sustainable agricultural practices in the world. Pesticides are critical in preventing biological disasters, ensuring crop productivity, and fostering sustainable agricultural production growth. Studies showed that crops are unable to properly utilize pesticides because of several limiting factors, such as leaching and bioconversion, thereby damaging ecosystems and human health. In recent years, stimuli-responsive systems for pesticides delivery (SRSP) by nanotechnology demonstrated excellent promise in enhancing the effectiveness and safety of pesticides. SRSP are being developed with the goal of delivering precise amounts of active substances in response to biological needs and environmental factors. An in-depth analysis of carrier materials, design fundamentals, and classification of SRSP were provided. The adhesion of SRSP to crop tissue, absorption, translocation in and within plants, mobility in the soil, and toxicity were also discussed. The problems and shortcomings that need be resolved to accelerate the actual deployment of SRSP were highlighted in this review.
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Affiliation(s)
- Douxin Xiao
- College of Chemistry and Chemical Engineering, Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Haixia Wu
- College of Chemistry and Chemical Engineering, Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Yanling Zhang
- College of Chemistry and Chemical Engineering, Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Jing Kang
- College of Chemistry and Chemical Engineering, Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering, Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China.
| | - Wenlong Liang
- Institute of Pesticide and Environmental Toxicology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, Hangzhou 310058, PR China.
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8
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Song S, Wan M, Feng W, Tian Y, Jiang X, Luo Y, Shen J. Environmentally Friendly Zr-Based MOF for Pesticide Delivery: Ultrahigh Loading Capacity, pH-Responsive Release, Improved Leaf Affinity, and Enhanced Antipest Activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10867-10874. [PMID: 36007159 DOI: 10.1021/acs.langmuir.2c01556] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The stimuli responsive pesticide delivery system (PDS) has drawn increasing attention in recent years, a system which can effectively improve the utilization of pesticides. In the current research, we report a pH responsive PDS by using carboxymethyl cellulose (CMC) modified Zr-based metal organic frameworks (UiO-66-NH2) as the nanocarrier for acetamiprid (ATP). UiO-66-NH2-CMC possesses a large surface area and abundant pores, which can effectively load ATP, and the loading rate is as high as 90.79%. Compared with free ATP, the ATP@UiO-66-NH2-CMC nanopesticide exhibits pH responsive controlled release behavior, and the pesticide can sustained release to the medium. In addition, it also shows improved leaf affinity, which makes it easier to wet the leaf surface and improve the utilization of pesticide. Therefore, ATP@UiO-66-NH2-CMC displays better antipest activity against aphids than free ATP does. Meanwhile, ATP@UiO-66-NH2-CMC shows no negative effects on the germination and growth of maize, showing good biosafety. Moreover, the ATP@UiO-66-NH2-CMC nanopesticide does not contain any toxic organic solvents or additives. Therefore, we hope that it can be a suitable candidate for plant protection and sustainable agriculture.
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Affiliation(s)
- Saijie Song
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Minghui Wan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Wenli Feng
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Yu Tian
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Xuefeng Jiang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Yi Luo
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
- Jiangsu Engineering Research Center of Interfacial Chemistry, Nanjing University, Nanjing 210023, China
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9
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Shi L, Liang Q, Zang Q, Lv Z, Meng X, Feng J. Construction of Prochloraz-Loaded Hollow Mesoporous Silica Nanoparticles Coated with Metal-Phenolic Networks for Precise Release and Improved Biosafety of Pesticides. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12162885. [PMID: 36014750 PMCID: PMC9414849 DOI: 10.3390/nano12162885] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/12/2022] [Accepted: 08/19/2022] [Indexed: 05/03/2023]
Abstract
Currently, environmental-responsive pesticide delivery systems have become an essential way to improve the effective utilization of pesticides. In this paper, by using hollow mesoporous silica (HMS) as a nanocarrier and TA-Cu metal-phenolic networks as a capping agent, a pH-responsive controlled release nano-formulation loaded with prochloraz (Pro@HMS-TA-Cu) was constructed. The structure and properties of Pro@HMS-TA-Cu were adequately characterised and analysed. The results showed that the loading content of Pro@HMS-TA-Cu nanoparticles was about 17.7% and the Pro@HMS-TA-Cu nanoparticles exhibited significant pH-responsive properties. After a coating of the TA-Cu metal-phenolic network, the contact angle and adhesion work of Pro@HMS-TA-Cu nanoparticles on the surface of oilseed rape leaves after 360 s were 59.6° and 107.2 mJ·m-2, respectively, indicating that the prepared nanoparticles possessed excellent adhesion. In addition, the Pro@HMS-TA-Cu nanoparticles demonstrated better antifungal activity against Sclerotinia sclerotiorum and lower toxicity to zebrafish compared to prochloraz technical. Hence, the pH-responsive nanoparticles prepared with a TA-Cu metal-phenolic network as a capping agent are highly efficient and environmentally friendly, providing a new approach for the development of new pesticide delivery systems.
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Gao W, Zhang Y, Ye R, Qi X, Chen L, Liu X, Tang L, Chen L, Chen H, Fan Z. Discovery of Novel Triazolothiadiazines as Fungicidal Leads Targeting Pyruvate Kinase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1047-1057. [PMID: 35077164 DOI: 10.1021/acs.jafc.1c07022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Pyruvate kinase (PK) was discovered as a potent new target for novel fungicide development. A series of novel triazolothiadiazine derivatives were rationally designed and synthesized by a ring expansion strategy and computer-aided pesticide design using the 3D structure of Rhizoctonia solani PK (RsPK) obtained by homology modeling as a receptor and our previously discovered lead YZK-C22 as a ligand. The in vitro bioassay results indicated that compounds 4g, 6h, 6m, 6n, 6o, and 6p exhibited good activity against R. solani with the EC50 values falling between 10.99 and 72.76 μM. Especially, 6m showed similar potency to YZK-C22 (10.99 vs 11.97 μM of the EC50 value, respectively). The in vivo bioassay results suggested that 6m against R. solani at a concentration of 200 μg/mL displayed a numerically higher inhibition than YZK-C22 (70 vs 60%, respectively). A field experiment validated that 6m at an application rate of 120 g ai/ha showed comparable efficacy against R. solani to thifluzamide at an application rate of 80 g ai/ha (77.80 vs 84.5%, respectively). Enzymatic inhibition suggested that the potency of 6m was about twofold lower than that of YZK-C22 (67.30 vs 32.64 μM of IC50, respectively). Fluorescence quenching studies validated that RsPK was quenched by both 6m and YZK-C22, implying that they both might act at the same target site of PK. A possible binding conformation of 6m in the RsPK active site was depicted by molecular docking. Our studies suggest that 6m could be a fungicidal lead targeting PK.
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Affiliation(s)
- Wei Gao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Yue Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Rong Ye
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xin Qi
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Lei Chen
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xiaoyu Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Liangfu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Hongyu Chen
- The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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