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Yang L, Ding M, Shi J, Luo N, Wang Y, Lin D, Bao X. Design, synthesis, X-ray crystal structure, and antimicrobial evaluation of novel quinazolinone derivatives containing the 1,2,4-triazole Schiff base moiety and an isopropanol linker. Mol Divers 2023:10.1007/s11030-023-10749-w. [PMID: 37935911 DOI: 10.1007/s11030-023-10749-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 10/13/2023] [Indexed: 11/09/2023]
Abstract
A series of novel quinazolinone derivatives (E1-E31) containing the 1,2,4-triazole Schiff base moiety and an isopropanol linker were designed, synthesized and assessed as antimicrobial agents in agriculture. All the target compounds were fully characterized by 1 H NMR, 13 C NMR, and high-resolution mass spectrometry (HRMS). Among them, the structure of compound E12 was further confirmed via single crystal X-ray diffraction method. The experimental results indicated that many compounds displayed good in vitro antibacterial efficacies against the tested phytopathogenic bacteria including Xanthomonas oryzae pv. oryzae (Xoo), Xanthomonas axonopodis pv. citri (Xac), and Ralstonia solanacearum (Rs). For example, compounds E3, E4, E10, E13, and E22 had EC50 (half-maximal effective concentration) values of 55.4, 39.5, 49.5, 53.5, and 57.4 µg/mL against Xoo, respectively, superior to the commercialized bactericide Bismerthiazol (94.5 µg/mL). In addition, the antibacterial efficacies of compounds E10 and E13 against Xac were about two times more effective than control Bismerthiazol, in terms of their EC50 values. Last, the antifungal assays showed that compounds E22 and E30 had the inhibition rates of 52.7% and 54.6% at 50 µg/mL against Gibberella zeae, respectively, higher than the commercialized fungicide Hymexazol (48.4%).
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Affiliation(s)
- Lan Yang
- College of Pharmacy, Guizhou University, Guiyang, 550025, China
| | - Muhan Ding
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Jun Shi
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guizhou Medical University, Guiyang, 550014, China
| | - Na Luo
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Yuli Wang
- College of Pharmacy, Guizhou University, Guiyang, 550025, China
| | - Dongyun Lin
- College of Pharmacy, Guizhou University, Guiyang, 550025, China
| | - Xiaoping Bao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, China.
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Wu X, Meng X, Hou B, Sun Z, Zhang Y, Li M. Rapid fluorescent color analysis of copper ions on a smart phone via ratiometric fluorescence sensor. Mikrochim Acta 2022; 189:67. [PMID: 35064839 DOI: 10.1007/s00604-022-05166-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 12/27/2021] [Indexed: 12/18/2022]
Abstract
A smartphone-assisted fluorescence color sensing system for rapid, convenient, and on-site detection of copper ions was developed. The ratiometric fluorescence sensor was fabricated by using silica-coated blue-light-emitting carbon dots and surface-grafted red-light-emitting cadmium-telluride quantum dots. After exposure to Cu2+ in 20 s, the red fluorescence was quenched obviously, while the blue fluorescence remained unchanged, and the sensor color changes continuously from red to blue under the ultraviolet lamp. The concentration (50-1200 nM) of copper ions could be measured by the fluorescence spectrum (excitation at 360 nm, dual-emission at 441 and 640 nm) with a detection limit of 7.7 nM. The fluorescence colors were converted to digital RGB values to calculate the concentration of copper ions by a smartphone with a detection limit of 9.6 nM. The method was applied to detecting copper ions spiked in real samples with recovery from 97.9 to 108.0% and RSD from 3.8 to 8.9%. Thus, this convenient and practical fluorescence color sensing system presents a new strategy for rapid, sensitive, and on-site determination of copper ions in environmental or biological samples.
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Affiliation(s)
- Xia Wu
- College of Science, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Xufeng Meng
- College of Science, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Baoxiu Hou
- College of Science, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Zhong Sun
- Mengyin Inspection and Testing Center, Linyi, Shandong, 276000, People's Republic of China
| | - Yunyi Zhang
- College of Science, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Ming Li
- College of Science, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China.
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Ding M, Wan S, Wu N, Yan Y, Li J, Bao X. Synthesis, Structural Characterization, and Antibacterial and Antifungal Activities of Novel 1,2,4-Triazole Thioether and Thiazolo[3,2- b]-1,2,4-triazole Derivatives Bearing the 6-Fluoroquinazolinyl Moiety. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:15084-15096. [PMID: 34881871 DOI: 10.1021/acs.jafc.1c02144] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A total of 52 novel 1,2,4-triazole thioether and thiazolo[3,2-b]-1,2,4-triazole derivatives bearing the 6-fluoroquinazolinyl moiety were designed, synthesized, and evaluated as antimicrobial agents in agriculture based on the molecular hybridization strategy. Among them, molecular structures of compounds 5g and 6m were further confirmed via the single-crystal X-ray diffraction method. The bioassay results indicated that some of the target compounds possessed excellent antibacterial activities in vitro against the pathogen Xanthomonas oryzae pv. oryzae (Xoo). For example, compound 6u demonstrated a strong anti-Xoo efficacy with an EC50 value of 18.8 μg/mL, nearly 5-fold more active than that of the commercialized bismerthiazol (EC50 = 93.6 μg/mL). Moreover, the anti-Xoo mechanistic studies revealed that compound 6u exerted its antibacterial effects by increasing the permeability of bacterial membrane, reducing the content of extracellular polysaccharide, and inducing morphological changes of bacterial cells. Importantly, in vivo assays revealed its pronounced protection and curative effects against rice bacterial blight, proving its potential as a promising bactericide candidate for controlling Xoo. Moreover, compound 6u had a good pesticide-likeness based on Tice's criteria. More interestingly, compound 6u with high anti-Xoo activity also demonstrated a potent inhibitory effect of 80.8% against the fungus Rhizoctonia solani at 50 μg/mL, comparable to that of the commercialized chlorothalonil (85.9%). Overall, the current study will provide useful guidance for the rational design of more efficient agricultural antimicrobial agents using the thiazolo[3,2-b]-1,2,4-triazole derivatives bearing the 6-fluoroquinazolinyl moiety as lead compounds.
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Affiliation(s)
- Muhan Ding
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Suran Wan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Nan Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Ya Yan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Junhong Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Xiaoping Bao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
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Vieira G, Khalil ZG, Capon RJ, Sette LD, Ferreira H, Sass DC. Isolation and agricultural potential of penicillic acid against citrus canker. J Appl Microbiol 2021; 132:3081-3088. [PMID: 34927315 DOI: 10.1111/jam.15413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 12/13/2021] [Indexed: 11/29/2022]
Abstract
AIMS The control of Xanthomonas citri subsp. citri (X. citri), causal agent of citrus canker, relies heavily in integrated agricultural practices involving the use of copper-based chemicals. Considering the need for alternatives to control this disease and the potential of fungi from extreme regions as producers of bioactive metabolites, we isolated and identified a bioactive compound from Penicillium sp. CRM 1540 isolated from Antarctica marine sediment. METHODS AND RESULTS The compound potential as an antibacterial agent against X. citri was assessed through in vitro and greenhouse experiments. Molecular taxonomy indicates this fungus is a possible new species of Penicillium. The results revealed 90% inhibition at 25 µg mL-1 in vitro and a decrease in symptoms emergency for the in vivo experiment in Citrus sinensis (L.) Osbeck leaves. The number of lesions per cm² for the treatment with the isolated compound was 75.31% smaller and significantly different (p <0.05) from the untreated control. The structure of the active agent was identified as penicillic acid based on detailed spectroscopic analysis. CONCLUSION Penicillic acid can be an alternative against citrus canker. SIGNIFICANCE AND IMPACT OF STUDY Research on extremophile microorganisms can lead to molecules with biotechnological potential and alternatives to current agriculture practices.
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Affiliation(s)
- Gabrielle Vieira
- São Paulo State University (UNESP), Institute of Biosciences, Department of General and Applied Biology, Avenue 24 A, 1515, Rio Claro, SP, Brazil
| | - Zeinab G Khalil
- The University of Queensland, Institute for Molecular Bioscience, Brisbane, QLD, Australia
| | - Robert J Capon
- The University of Queensland, Institute for Molecular Bioscience, Brisbane, QLD, Australia
| | - Lara Durães Sette
- São Paulo State University (UNESP), Institute of Biosciences, Department of General and Applied Biology, Avenue 24 A, 1515, Rio Claro, SP, Brazil
| | - Henrique Ferreira
- São Paulo State University (UNESP), Institute of Biosciences, Department of General and Applied Biology, Avenue 24 A, 1515, Rio Claro, SP, Brazil
| | - Daiane Cristina Sass
- São Paulo State University (UNESP), Institute of Biosciences, Department of General and Applied Biology, Avenue 24 A, 1515, Rio Claro, SP, Brazil
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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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He F, Guo S, Dai A, Zhang R, Wu J. Synthesis, Characterization, and Biological Activity of Novel Amide Derivatives Containing Trifluoromethylpyridine Moieties. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202101045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Shi J, Ding M, Luo N, Wan S, Li P, Li J, Bao X. Design, Synthesis, Crystal Structure, and Antimicrobial Evaluation of 6-Fluoroquinazolinylpiperidinyl-Containing 1,2,4-Triazole Mannich Base Derivatives against Phytopathogenic Bacteria and Fungi. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:9613-9623. [PMID: 32786823 DOI: 10.1021/acs.jafc.0c01365] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A total of 20 1,2,4-triazole Mannich base derivatives bearing the 6-fluoroquinazolinylpiperidinyl moiety were designed, synthesized, and evaluated as antimicrobial agents against phytopathogenic bacteria and fungi according to the molecular hybridization strategy. Of note, the structure of target compound 4h was clearly confirmed through single-crystal X-ray diffraction analysis. The turbidimetric assays indicated that some compounds exhibited excellent antibacterial efficacies in vitro against Xanthomonas oryzae pv. oryzae (Xoo). For example, compounds 4c, 4f, 4j, and 7j had EC50 values of 23.6, 18.8, 23.4, and 24.3 μg/mL, respectively, which were far superior to that of agrobactericide bismerthiazol (EC50 = 92.4 μg/mL). In particular, compound 4f demonstrated a potent anti-Xoo activity approximately five times more active than that of bismerthiazol. Moreover, in vivo assays showed the excellent protective and curative activities of compound 4f against rice bacterial blight, having the potential as an alternative bactericide for controlling Xoo. The structure-activity relationship analysis showed a good pesticide-likeness concerning compound 4f, following Tice's criteria. The anti-Xoo mechanism of compound 4f was preliminarily explored by scanning electron microscopy measurements in living bacteria. Finally, several compounds also exhibited good antifungal activities in vitro against Gibberella zeae at 50 μg/mL. In short, the presented work showed the potential of 6-fluoroquinazolinylpiperidinyl-containing 1,2,4-triazole Mannich base derivatives as effective bactericides for controlling Xoo.
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Affiliation(s)
- Jun Shi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Muhan Ding
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Na Luo
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Suran Wan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Peijia Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Junhong Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Xiaoping Bao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
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