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Wang WH, Li ZR, Zhu DX, Chen JY, Zhou Y, Li CP, Shao LH, Qiu XM, Zhu M, Long HT, Chen DP, Ouyang GP, Rong ZQ, Wang ZC. Design, synthesis, antibacterial evaluation of isopropylamine linked with different substituted phenol and piperazine novel derivatives. PEST MANAGEMENT SCIENCE 2024; 80:2710-2723. [PMID: 38358029 DOI: 10.1002/ps.7986] [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: 11/03/2023] [Revised: 01/02/2024] [Accepted: 01/14/2024] [Indexed: 02/16/2024]
Abstract
BACKGROUND Xanthomonas oryzae pv. oryzae (Xoo) is often considered one of the most destructive bacterial pathogens causing bacterial leaf blight (BLB), resulting in significant yield and cost losses in rice. In this study, a series of novel derivatives containing the isopropanolamine moiety linked to various substituted phenols and piperazines were designed, synthesized and screened. RESULTS Antibacterial activity results showed that most compounds had good inhibitory effects on Xoo, among which compound W2 (EC50 = 2.74 μg mL-1) exhibited the most excellent inhibitory activity, and W2 also had a certain curative effect (35.89%) on rice compared to thiodiazole copper (TC) (21.57%). Scanning electron microscopy (SEM) results indicated that compound W2 could cause rupture of the Xoo cell membrane. Subsequently, proteomics and quantitative real-time polymerase chain reaction revealed that compound W2 affected the physiological processes of Xoo and may exert antibacterial activity by targeting the two-component system pathway. Interestingly, W2 upregulated Xoo's methyltransferase to impact on its pathogenicity. CONCLUSION The present study offers a promising phenolic-piperazine-sopropanolamine compound as an innovative antibacterial strategy by specifically targeting the two-component system pathway and inducing upregulation of methyltransferase to effectively impact Xoo's pathogenicity. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Wen-Hang Wang
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
| | - Zhu-Rui Li
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
| | - Dan-Xue Zhu
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
| | - Jia-Yi Chen
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
| | - Yue Zhou
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
| | - Cheng-Peng Li
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
| | - Li-Hui Shao
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
- 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, People's Republic of China
| | - Xue-Mei Qiu
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
| | - Mei Zhu
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
- 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, People's Republic of China
| | - Hai-Tao Long
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang, People's Republic of China
| | - Dan-Ping Chen
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang, People's Republic of China
| | - Gui-Ping Ouyang
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
- 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, People's Republic of China
| | - Zi-Qiang Rong
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), Xi'an, People's Republic of China
| | - Zhen-Chao Wang
- College of Pharmacy, Guizhou University, Guiyang, People's Republic of China
- 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, People's Republic of China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang, People's Republic of China
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Li R, Men X, Li R, Liu T, Liang H, Fang F, Sun-Waterhouse D, Wang Y. Residue behaviors and dietary risk of cyazofamid in turnip, onion and romaine lettuce assessed by a QuEChERS-LC-MS/MS method. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2023.02.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Huang J, Lin S, Zhou J, Chen H, Tang S, Wu J, Huang S, Cheng D, Zhang Z. Dissipation and Distribution of Prochloraz in Bananas and a Risk Assessment of Its Dietary Intake. TOXICS 2022; 10:435. [PMID: 36006113 PMCID: PMC9415821 DOI: 10.3390/toxics10080435] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/18/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND As a systematic fungicide, prochloraz is often used to control banana freckle disease, and it is significant to assess the safety and risk of prochloraz. METHODS The dissipation kinetics and distribution of prochloraz in bananas were measured by high-performance liquid chromatography (HPLC). RESULTS The results showed that the fortified recoveries in bananas were 83.01-99.12%, and the relative standard deviations (RSDs) were 2.45-7.84%. The half-life of prochloraz in banana peel (3.93-5.60 d) was significantly lower than it was in whole banana (8.25-10.80 d) and banana pulp (10.35-12.84 d). The terminal residue of prochloraz in banana fruits was below the maximum residue level (MRL, China) at pre-harvest intervals (PHI) of 21 d. Moreover, the residue of prochloraz in banana peel was always 1.06-7.71 times greater than it was in banana pulp. The dietary risk assessment results indicated that the prochloraz residue in bananas at PHI of 21 d was safe for representative populations. (4) Conclusions: We found that a 26.7% prochloraz emulsion oil in water (EW) diluted 1000-fold and sprayed three times under field conditions was safe and reliable, providing a reference for the safe application of prochloraz in bananas.
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Affiliation(s)
- Jiajian Huang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (J.H.); (S.L.); (J.Z.); (H.C.); (S.T.); (J.W.)
| | - Sukun Lin
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (J.H.); (S.L.); (J.Z.); (H.C.); (S.T.); (J.W.)
| | - Jingtong Zhou
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (J.H.); (S.L.); (J.Z.); (H.C.); (S.T.); (J.W.)
| | - Huiya Chen
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (J.H.); (S.L.); (J.Z.); (H.C.); (S.T.); (J.W.)
| | - Shiqi Tang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (J.H.); (S.L.); (J.Z.); (H.C.); (S.T.); (J.W.)
| | - Jian Wu
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (J.H.); (S.L.); (J.Z.); (H.C.); (S.T.); (J.W.)
| | - Suqing Huang
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
| | - Dongmei Cheng
- Department of Plant Protection, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Zhixiang Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (J.H.); (S.L.); (J.Z.); (H.C.); (S.T.); (J.W.)
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Lin S, Zhou Y, Wu J, Zhang Z, Cheng D. Dissipation and residue of fosthiazate in tomato and cherry tomato and a risk assessment of dietary intake. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:9248-9256. [PMID: 34505248 DOI: 10.1007/s11356-021-16305-z] [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] [Received: 06/14/2021] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
In this study, the safety and risk of fosthiazate as a nematicide against root-knot nematode in tomato and cherry tomato were evaluated. The dissipation and residue of fosthiazate for 28 days in tomatoes and cherry tomatoes were determined and studied by HPLC after simple, rapid pre-treatment. The mean recovery was 83.79~94.18%, and the relative standard deviations were 3.97~7.40%. Results showed that the half-lives of fosthiazate in tomatoes (4.81~5.37 days) were significantly lower than that in cherry tomatoes (5.25~5.73 days). At the pre-harvest interval (PHI) of 21 days, the residues of tomatoes and cherry tomatoes were 0.032~0.046 mg/kg, which were lower than the maximum residue level (MRL) established in China. The potential risks of fosthiazate exposure through the dietary intake of tomatoes and cherry tomatoes to different populations were also studied. According to the results of dietary risk assessment, the residual levels of fosthiazate were within the acceptable range of long-term dietary risk in different populations in China within the sampling interval of 21 days after the application of fosthiazate. Our results show that fosthiazate at 2250 g.a.i./ha in the field control of root-knot nematode has high safety and low risk, and can provide a reference for the safe and reasonable use of fosthiazate as a nematicide in the field.
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Affiliation(s)
- Sukun Lin
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Yi Zhou
- Department of Plant Protection, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Jiyingzi Wu
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Zhixiang Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou, 510642, China.
| | - Dongmei Cheng
- Department of Plant Protection, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
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Wang R, Liu B, Zheng Q, Qin D, Luo P, Zhao W, Ye C, Huang S, Cheng D, Zhang Z. Residue and dissipation of two formulations of emamectin benzoate in tender cowpea and old cowpea and a risk assessment of dietary intake. Food Chem 2021; 361:130043. [PMID: 34029897 DOI: 10.1016/j.foodchem.2021.130043] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/30/2021] [Accepted: 05/04/2021] [Indexed: 10/21/2022]
Abstract
The dissipation and residue levels of emamectin benzoate emulsifiable concentrate (EC) and microemulsion (ME) formulations in tender cowpeas and old cowpeas were investigated under field conditions. The decline curves of emamectin benzoate residues in cowpea corresponded to first-order kinetics. The dissipation rate of emamectin benzoate in tender cowpeas was faster than that in old cowpeas. The half-lives of the EC were 1.34-1.39 d and 1.74-2.31 d in tender cowpea and old cowpea, respectively. For the ME, the half-lives were 1.39-1.51 d and 2.08-2.67 d, respectively. The risk of adult intake of emamectin benzoate from cowpea is within the acceptable limits of the human body. Compared to tender cowpeas, the risk of eating old cowpeas is higher. Emamectin benzoate (EC) is recommended for cowpeas when the intention is to harvest tender cowpeas, while both formulations are acceptable for cowpeas when the intention is to harvest old cowpeas.
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Affiliation(s)
- Ruifei Wang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Benju Liu
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Qun Zheng
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Deqiang Qin
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Peiru Luo
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Weihua Zhao
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Cuiyi Ye
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Suqing Huang
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510642, China
| | - Dongmei Cheng
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510642, China.
| | - Zhixiang Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China.
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Zheng Q, Qin D, Yang L, Liu B, Lin S, Ma Q, Zhang Z. Dissipation and distribution of difenoconazole in bananas and a risk assessment of dietary intake. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:15365-15374. [PMID: 32077026 DOI: 10.1007/s11356-020-08030-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
The dissipation and terminal residues of difenoconazole in whole bananas and pulp were investigated under field conditions. The residual levels of difenoconazole in various parts of bananas grown in Guangdong, Hainan and Yunnan were determined by a GC-ECD detection method after simple, rapid pretreatment. The mean recovery was 80.66~107.40%, and the relative standard deviation was 3.36~9.84%. The results showed that the half-lives of difenoconazole in whole bananas and in the pulp were 12.16~13.33 days and 17.77~20.38 days, respectively. At harvest intervals of 28 and 35 days after the last application, the terminal residues of difenoconazole in whole bananas and pulp were 0.45~0.84 mg/kg and 0.19~0.37 mg/kg, respectively, which were lower than the maximum residue level established in China. The distribution of difenoconazole in banana pulp and peels was studied. The results showed that until harvesting, the residue in the peels was always 2.19~12.30 times larger than that in the pulp. Difenoconazole was mainly absorbed by the banana peels but did not easily penetrate into the pulp. Based on dietary risk assessment results, the residual levels of difenoconazole at the sampling interval of 28 days after the last application were within acceptable limits for chronic and acute dietary risks in different populations in China. This study can provide a reference for the safe and rational use of difenoconazole as a fungicide and for the future research and application of banana pulp and peels.
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Affiliation(s)
- Qun Zheng
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Deqiang Qin
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Liupeng Yang
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Benju Liu
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Sukun Lin
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Qianli Ma
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642, China
| | - Zhixiang Zhang
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642, China.
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