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An K, Feng X, Ji J, Wang X, Pang M, Liu T, Wang S, Shi H, Dong J, Liu Y. Synergistic mechanism and environmental behavior of tank-mix adjuvants to topramezone and atrazine. Environ Sci Pollut Res Int 2024; 31:20246-20257. [PMID: 38372921 DOI: 10.1007/s11356-024-32389-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/05/2024] [Indexed: 02/20/2024]
Abstract
An effective way to reduce herbicide quantity is to use adjuvants in order to optimize the amount of herbicide and improve its control efficiency. In order to screen for efficient herbicide tank-mix adjuvants, improve the control of weeds in maize fields, reduce the amount of effective ingredients, and improve the adsorption and digestion behavior of herbicides in soil, this study evaluated the synergistic effects and soil behavior of four types of tank-mix adjuvants combined with herbicides. Different types of adjuvants can enhance herbicide production. Surface tension was significantly reduced by 13% after the pesticide solution was applied with AgroSpred™ Prime. The contact angle with the foliar surface was significantly reduced and solution wettability improved using Atp Lus 245-LQ-(TH). The permeability of topramezone and atrazine in leaves of Amaranthus retroflexus L. and Digitaria sanguinalis (L.) Scop. was increased by 22-96% after adding either tank-mix adjuvant. The solution drying time and maximum retention on leaves were not affected by the tank-mix adjuvants. Ethyl and methylated vegetable oils can reduce the adsorption of topramezone in the soil, thus reducing its half-life in soil. The tank-mix adjuvants had no significant effect on soil dissipation or adsorption of atrazine. AgroSpred™ Prime and Atp Lus 245-LQ-(TH) have the best synergistic effect on topramezone and atrazine in the control of A. retroflexus L. and D. sanguinalis (L.) Scop. in maize fields.
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Affiliation(s)
- Kai An
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Xiaoxiao Feng
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Jiaxing Ji
- Hebei Research Institute of Microbiology Co., LTD, Baoding, 071052, People's Republic of China
| | - Xinyue Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Minhao Pang
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Tiantian Liu
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Sijia Wang
- Resource Utilization and Plant Protection, Chinese Academy of Agricultural Sciences, Liaoning 125100, Beijing, People's Republic of China
| | - Huiru Shi
- Resource Utilization and Plant Protection, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Jingao Dong
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Yingchao Liu
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China.
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Wang H, Liu B, Lei P, Zhu J, Chen L, He Q, He J. Improving the herbicide resistance of 4-hydroxyphenylpyruvate dioxygenase SpHPPD by directed evolution. Enzyme Microb Technol 2021; 154:109964. [PMID: 34902641 DOI: 10.1016/j.enzmictec.2021.109964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 11/27/2021] [Accepted: 12/06/2021] [Indexed: 11/03/2022]
Abstract
Topramezone, a highly efficient 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibitor herbicide, is an ideal target for herbicide-resistant genetic engineering. However, there is still a lack of HPPD gene that is highly resistant to topramezone. In previous studies, we obtained a topramezone-resistant HPPD (SpHPPDm) gene from Sphingobium sp. TPM-19, however, its resistance strength still could not meet the requirements for construction of herbicide-resistant crop. In this study, random mutagenesis (error-prone PCR) was employed to improve the topramezone resistance of SpHPPDm. Two mutants with improved resistance, K-28 (E322R) and K-113 (K249R, G327C), were screened from the random mutation library of SpHPPDm. The catalytic efficiency (kcat/Km) of mutants K-28 and K-113 only slightly decreased by approximately 2%. The half-maximal inhibitory concentration (IC50) of topramezone increased by 58.5% and 195.5% for mutants K-28 and K-113, respectively. Furthermore, mutant K-113 also showed significantly improved resistance to mesotrione and DKN (the active ingredient of isoxaflutole) with the IC50 increasing by 60.3% and 167.5%, respectively; while mutant K-28 only showed increased resistance to mesotrione with IC50 increasing by 77.6%, but reduced resistance to DKN with IC50 declining by 20.9%. Site-directed mutation assays revealed that G327C, but not K249R, contributed to topramezone resistance in mutant K-113. This study provides genetic resources for the genetic engineering of HPPD-inhibitor-resistant crops and a basis for further research on HPPD resistance mechanisms.
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Affiliation(s)
- Haiyan Wang
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Bin Liu
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Peng Lei
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Jianchun Zhu
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Le Chen
- Excellence and innovation center, Jiangsu Academy of Agricultural Science, Nanjing 210014, China.
| | - Qin He
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
| | - Jian He
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
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Zhao F, Xiang Q, Zhou Y, Xu X, Qiu X, Yu Y, Ahmad F. Evaluation of the toxicity of herbicide topramezone to Chlorella vulgaris: Oxidative stress, cell morphology and photosynthetic activity. Ecotoxicol Environ Saf 2017; 143:129-135. [PMID: 28525816 DOI: 10.1016/j.ecoenv.2017.05.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 05/08/2017] [Accepted: 05/11/2017] [Indexed: 06/07/2023]
Abstract
Topramezone is a new, highly selective herbicide of pyrazole structure for the post-emergence control of broadleaf and grass weeds in corn. In this study, the effects of topramezone on C. vulgaris, especially in relation to the cell growth, oxidative stress, cell morphology and photosynthetic activity were assessed. Results showed that topramezone treatment was detrimental to C. vulgaris growth during the 24-96h of exposure. The changes in cells pigments content and relative transcript of photosynthesis-related genes, which implies that topramezone disrupted the photosynthetic system. Moreover, topramezone induced membrane permeability in a significant proportion of cells with a maximum damage rate of 40.40%, and morphology of cells was more complicated than the control group. TEM images also revealed that topramezone compromised the integrity of the cells. The data corroborated topramezone induced ROS triggered oxidative stress, leading to an increase of MDA. These results suggested that topramezone could have significant effects on growth and physiological functions in algae species, and we supposed that this herbicide affected all of these parameters and the observed effects can be explained by the generation of oxidative stress. This research helps to understand how topramezone affects C. vulgaris and provides a scientific basis for applications of topramezone in aquatic environment.
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Affiliation(s)
- Fangfang Zhao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China; Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, China.
| | - Qingqing Xiang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China; Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, China
| | - Ying Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China; Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, China.
| | - Xiao Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China; Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, China
| | - Xinyi Qiu
- Albert College, 160 Dundas Street West Belleville, Ontario, China
| | - Yi Yu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China; Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, China
| | - Farooq Ahmad
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, China
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