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Jiang M, Wang X, Hu W, Wang Z, Guan H, Zhao N, Liao M, Cao H. A novel mutation Trp-2027-Gly in acetyl-CoA carboxylase confers resistance to cyhalofop-butyl in Chinese sprangletop (Leptochloa chinensis). PEST MANAGEMENT SCIENCE 2024. [PMID: 39105535 DOI: 10.1002/ps.8353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 07/15/2024] [Accepted: 07/19/2024] [Indexed: 08/07/2024]
Abstract
BACKGROUND Chinese sprangletop [Leptochloa chinensis (L.) Nees] control is threatened by resistance to acetyl-CoA carboxylase (ACCase)-inhibiting herbicides. In this study, a L. chinensis population, HFLJ18, that survived cyhalofop-butyl [aryloxyphenoxypropionate (APP) herbicide, CyB] treatment was collected from a rice field in Lujiang County, Anhui Province, China. This study aimed to evaluate the susceptibility of HFLJ18 to herbicides with different modes-of-action and investigate the potential mechanisms of resistance to CyB. RESULTS The HFLJ18 population exhibited high levels of resistance to CyB (10.92-fold) and showed resistance to the ACCase inhibitors metamifop (4.63-fold) and fenoxaprop-P-ethyl (8.39-fold), but was susceptible to clethodim, pinoxaden, florpyrauxifen-benzyl, oxadiazon and pretilachlor. Target gene sequencing revealed a novel Trp-to-Gly substitution at codon position 2027 of ACCase in the resistant plants. Molecular docking revealed that the spatial structure of ACCase changed significantly following the substitution, as indicated by reduced H-bonds. A newly derived cleaved amplified polymorphic sequence (dCAPS) marker was subsequently developed to detect the Trp-2027-Gly mutation in the ACCase of L. chinensis. Additionally, pretreatment with the cytochrome P450 (P450) inhibitor piperonyl butoxide (PBO) and the glutathione S-transferase (GST) inhibitor 4-chloro-7-nitrobenzoxadiazole (NBD-Cl) did not reverse resistance to CyB, suggesting that nontarget-site resistance mechanisms were not involved in CyB resistance in the HFLJ18 population. CONCLUSION Overall, the resistance to CyB in the HFLJ18 population derived from the mutation of ACCase gene, and to the best of our knowledge, this is the first report of the ACCase Trp-2027-Gly mutation conferring resistance to ACCase-inhibiting herbicides in grass species. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Minghao Jiang
- Key Laboratory of Agro-Products Quality and Biosafety (Ministry of Education), Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, Hefei, China
- School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Xumiao Wang
- School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Wei Hu
- Key Laboratory of Agro-Products Quality and Biosafety (Ministry of Education), Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, Hefei, China
- School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Zezhou Wang
- Key Laboratory of Agro-Products Quality and Biosafety (Ministry of Education), Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, Hefei, China
- School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Huaiji Guan
- Anhui Shanghe Voda Biotechnology Co., Ltd, Huainan, China
| | - Ning Zhao
- Key Laboratory of Agro-Products Quality and Biosafety (Ministry of Education), Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, Hefei, China
- School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Min Liao
- Key Laboratory of Agro-Products Quality and Biosafety (Ministry of Education), Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, Hefei, China
- School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Haiqun Cao
- Key Laboratory of Agro-Products Quality and Biosafety (Ministry of Education), Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, Hefei, China
- School of Plant Protection, Anhui Agricultural University, Hefei, China
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Yao S, Yin H, Li Y, Yang Q, Yuan S, Deng W. Cytochrome P450 CYP81A104 in Eleusine indica confers resistance to multiherbicide with different modes of action. PEST MANAGEMENT SCIENCE 2024. [PMID: 39003629 DOI: 10.1002/ps.8310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/26/2024] [Accepted: 07/01/2024] [Indexed: 07/15/2024]
Abstract
BACKGROUND Developing herbicide-resistant (HR) crop cultivars is an efficient way to control weeds and minimize crop yield losses. However, widespread and long-term herbicide application has led to the evolution of resistant weeds. Here, we established a resistant (R) E. indica population, collected from imidazolinone-resistant rice cultivar fields. RESULTS The R population evolved 4.5-fold resistance to imazamox. Acetolactate synthase (ALS) gene sequencing and ALS activity assays excluded the effect of target-site resistance in this population. P450 inhibitor malathion pretreatment significantly reversed resistance to imazamox. RNA sequencing showed that a P450 gene CYP81A104 was expressed higher in R versus susceptible (S) plants. Arabidopsis overexpressing CYP81A104 showed resistance to ALS inhibitors (imazamox, tribenuron-methyl, penoxsulam and flucarbazone-sodium), PSII inhibitor (bentazone), hydroxyphenyl pyruvate dioxygenase inhibitor (mesotrione) and auxin mimics (MCPA), which was generally consistent with the results presented in the R population. CONCLUSION This study confirmed that the CYP81A104 gene endowed resistance to multiherbicides with different modes-of-action. Our findings provide an insight into the molecular characteristics of resistance and contribute to formulating an appropriate strategy for weed management in HR crops. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Sai Yao
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Hanqi Yin
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Yang Li
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Qian Yang
- Jiangsu Lixiahe District Institute of Agricultural Sciences, Yangzhou, China
| | - Shuzhong Yuan
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Wei Deng
- College of Plant Protection, Yangzhou University, Yangzhou, China
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Li W, Hu J. Photodegradation of the novel herbicide pyraclonil in aqueous solution: Kinetics, identification of photoproducts, mechanism, and toxicity assessment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 357:124381. [PMID: 38906402 DOI: 10.1016/j.envpol.2024.124381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 06/07/2024] [Accepted: 06/15/2024] [Indexed: 06/23/2024]
Abstract
Pyraclonil is a new type of pyrazole herbicide, whose photochemical fate in aqueous solution has not been reported yet. In this study, effects on the photolysis rate such as light source, pH, NO3-, Fe3+, fulvic acid (FA) and riboflavin (RF) were investigated. Pyraclonil photodegraded in pure water under both UV and simulated sunlight with half-lives of 32.29 min and 42.52 h, respectively. Under UV, the degradation rate of pyraclonil in pH 4 solution (0.0299 ± 0.0033 min-1) was about twice higher than that in pH 9 (0.0160 ± 0.0063 min-1). Under simulated sunlight, low concentration (0.1-1 mg/L) of FA, NO3-, Fe3+ and RF noticeably promoted the photodegradation of pyraclonil. Then, with the combination of experimental UPLC-Q-TOF/MS and computational calculation of density functional theory (DFT), fourteen transformation products (TPs) of pyraclonil were identified with possible mechanism of C-N bond cleavage, photorearrangement, demethylation, hydroxylation and oxidation. Additionally, acute toxicity assessment was conducted through ECOSAR prediction and laboratory bioassays. The prediction results indicated that toxicity of TP157 to daphnid and green algae was 1.3 and 1.4 times higher than that of the parent, respectively. The bioassay results indicated that toxicities of TP157 and TP263 to C. vulgaris were about 1.6 and 5.9 times higher than that of the parent, respectively. The results provided a reference for elucidating the potential hazards of pyraclonil to non-target organisms and promoting its rational use.
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Affiliation(s)
- Wei Li
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jiye Hu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
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4
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He S, Liu M, Chen W, Bai D, Liao Y, Bai L, Pan L. Eleusine indica Cytochrome P450 and Glutathione S-Transferase Are Linked to High-Level Resistance to Glufosinate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14243-14250. [PMID: 37749769 DOI: 10.1021/acs.jafc.3c04325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Eleusine indica has become a global nuisance weed and has evolved resistance to glufosinate. The involvement of target-site resistance (TSR) in glufosinate resistance in E. indica has been elucidated, while the role of nontarget-site resistance (NTSR) remains unclear. Here, we identified a glufosinate-resistant (R) population that is highly resistant to glufosinate, with a resistance index of 13.5-fold. Molecular analysis indicated that the resistance mechanism of this R population does not involve TSR. In addition, pretreatment with two known metabolic enzyme inhibitors, the cytochrome P450 (CYP450) inhibitor malathion and the glutathione S-transferase (GST) inhibitor 4-chloro-7-nitrobenzoxadiazole (NBD-Cl), increased the sensitivity of the R population to glufosinate. The results of subsequent RNA sequencing (RNA-seq) and quantitative real-time PCR (RT-qPCR) suggested that the constitutive overexpression of a GST gene (GSTU3) and three CYP450 genes (CYP94s and CYP71) may play an important role in glufosinate resistance. This study provides new insights into the resistance mechanism of E. indica.
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Affiliation(s)
- Sifen He
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Min Liu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Wen Chen
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Dingyi Bai
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Yuxi Liao
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Lianyang Bai
- Longping Branch, College of Biology, Hunan University, Changsha 410125, China
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Lang Pan
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
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Filimonov VO, Topchiy AI, Ilkin VG, Beryozkina TV, Bakulev VA. Cyanothioacetamides as a synthetic platform for the synthesis of aminopyrazole derivatives. Beilstein J Org Chem 2023; 19:1191-1197. [PMID: 37592935 PMCID: PMC10428587 DOI: 10.3762/bjoc.19.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 07/28/2023] [Indexed: 08/19/2023] Open
Abstract
It was shown that the reaction of 2-cyanothioacetamides with hydrazine involves both cyano- and thioamide groups, and 3,5-diaminopyrazoles are formed. In the reaction of 2-cyano-3-(dimethylamino)-N,N-dimethylprop-2-enethioamides with hydrazine and its derivatives, the interaction proceeds with the participation of cyano- and enamine groups, not affecting the thiocarbamoyl group, and leads to the formation of 4-thiocarbamoylpyrazoles. A synthesis method has been developed and a series of 1-substituted-4-thiocarbamoyl pyrazoles has been thus synthesized. The structure of the reaction products was studied using NMR spectroscopy and mass spectrometry and confirmed by X-ray diffraction analysis.
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Affiliation(s)
- Valeriy O Filimonov
- Technology of Organic Synthesis Department, Ural Federal University named after the first President of Russia B. N. Yeltsin, 19 Mira st. Yekaterinburg 620002, Russia
- Department of Organic Chemistry, Perm State University, 15 Bukireva st., Perm 614990, Russia
| | - Alexandra I Topchiy
- Technology of Organic Synthesis Department, Ural Federal University named after the first President of Russia B. N. Yeltsin, 19 Mira st. Yekaterinburg 620002, Russia
| | - Vladimir G Ilkin
- Technology of Organic Synthesis Department, Ural Federal University named after the first President of Russia B. N. Yeltsin, 19 Mira st. Yekaterinburg 620002, Russia
| | - Tetyana V Beryozkina
- Technology of Organic Synthesis Department, Ural Federal University named after the first President of Russia B. N. Yeltsin, 19 Mira st. Yekaterinburg 620002, Russia
| | - Vasiliy A Bakulev
- Technology of Organic Synthesis Department, Ural Federal University named after the first President of Russia B. N. Yeltsin, 19 Mira st. Yekaterinburg 620002, Russia
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Deng W, Li Y, Yao S, Duan Z, Yang Q, Yuan S. ACCase gene mutations and P450-mediated metabolism contribute to cyhalofop-butyl resistance in Eleusine indica biotypes from direct-seeding paddy fields. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 194:105530. [PMID: 37532339 DOI: 10.1016/j.pestbp.2023.105530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 08/04/2023]
Abstract
Eleusine indica causes problems in direct-seeding rice fields across Jiangsu Province in China. Long-term application of chemical herbicides has led to the widespread evolution of resistance in E. indica. In this study, we surveyed the resistance level of cyhalofop-butyl (CyB) in 19 field-collected E. indica biotypes, and characterized its underlying resistance mechanisms. All 19 biotypes evolved moderate- to high-level resistance to CyB (from 5.8- to 171.1-fold). 18 biotypes had a target-site mechanism with Trp-1999-Ser, Trp-2027-Cys, or Asp-2078-Gly mutations, respectively. One biotype (JSSQ-1) was identified to have metabolic resistance, in which malathion pretreatment significantly reduced the CyB resistance, and cyhalofop acid was degraded 1.7- to 2.5-times faster in this biotype compared with a susceptible control. Furthermore, the JSSQ-1 biotype showed multiple resistance to acetyl-CoA carboxylase (ACCase) inhibitor metamifop (RI = 4.6) and fenoxaprop-p-ethyl (RI = 5.1), acetolactate synthase (ALS) inhibitor imazethapyr (RI = 4.1), and hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor mesotrione (RI = 3.5). In addition, 11 out of 19 E. indica biotypes exhibited multiple resistance to glyphosate. This research has identified the widespread occurrence of CyB resistance in E. indica, attributed to target-site mutations or enhanced metabolism. Moreover, certain biotypes have exhibited resistance to multiple herbicides or even cross-resistance. Consequently, there is an urgent need to implement diverse weed management practices to effectively combat the proliferation of this weed in rice fields.
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Affiliation(s)
- Wei Deng
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Yang Li
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Sai Yao
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Zhiwen Duan
- College of Plant Protection, Yangzhou University, Yangzhou, China
| | - Qian Yang
- Jiangsu Lixiahe District Institute of Agricultural Sciences, Yangzhou, China
| | - Shuzhong Yuan
- College of Plant Protection, Yangzhou University, Yangzhou, China.
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Yang Q, Zhu J, Yang X, Wei T, Lv M, Li Y. Ile-1781-Leu Target Mutation and Non-Target-Site Mechanism Confer Resistance to Acetyl-CoA Carboxylase-Inhibiting Herbicides in Digitaria ciliaris var. chrysoblephara. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7988-7995. [PMID: 37191622 DOI: 10.1021/acs.jafc.3c00646] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Digitaria ciliaris var. chrysoblephara is a xerophytic weed severely invading rice fields along with the application of rice mechanical direct seeding technology in China. This study identified one resistant population (M5) with an Ile-1781-Leu substitution in ACCase1 showing broad-spectrum resistance to three chemical classes of ACCase-inhibiting herbicides, including metamifop, cyhalofop-butyl, fenoxaprop-p-ethyl, haloxyfop-p-methyl, clethodim, sethoxydim, and pinoxaden. The other two populations, M2 and M4, without any resistance-responsible mutations, only exhibited resistance to aryloxyphenoxypropionate (APP) herbicides cyhalofop-butyl and fenoxaprop-p-ethyl. Pre-treatment with the cytochrome P450 monooxygenase (P450) inhibitor PBO significantly reduced the cyhalofop-butyl resistance by 43% in the M2 population. Pre-emergence weed control with soil-applied herbicides, such as pretilachlor, pendimethalin, and oxadiazon, can effectively inhibit the germination and growth of D. ciliaris var. chrysoblephara. The present study reported a xerophytic weed species invading rice fields featuring broad-spectrum resistance to ACCase-inhibiting herbicides as a result of Ile-1781-Leu mutation of ACCase. Both target- and P450-involved non-target-site mechanisms may be contributing to resistance in D. ciliaris var. chrysoblephara species.
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Affiliation(s)
- Qian Yang
- Jiangsu Lixiahe District Institute of Agricultural Sciences, Yangzhou, Jiangsu 225007, People's Republic of China
| | - Jinlei Zhu
- Jiangsu Lixiahe District Institute of Agricultural Sciences, Yangzhou, Jiangsu 225007, People's Republic of China
| | - Xia Yang
- Institute of Crop Germplasm and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, People's Republic of China
| | - Tian Wei
- Jiangsu Lixiahe District Institute of Agricultural Sciences, Yangzhou, Jiangsu 225007, People's Republic of China
| | - Min Lv
- Jiangsu Lixiahe District Institute of Agricultural Sciences, Yangzhou, Jiangsu 225007, People's Republic of China
| | - Yongfeng Li
- Institute of Crop Germplasm and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, People's Republic of China
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Guo W, Zhang C, Wang S, Zhang T, Tian X. Temperature influences glyphosate efficacy on glyphosate-resistant and -susceptible goosegrass ( Eleusine indica). FRONTIERS IN PLANT SCIENCE 2023; 14:1169726. [PMID: 37035058 PMCID: PMC10073670 DOI: 10.3389/fpls.2023.1169726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 03/09/2023] [Indexed: 06/19/2023]
Abstract
Glyphosate has been widely used to control Eleusine indica and other weeds in South China for many years. Among the most troublesome weeds in South China, E. indica can remain alive all year round. However, the influence of temperature on glyphosate efficacy on E. indica, especially under days with fluctuating temperature, is unknown. This study evaluated the influence of two temperature regimes on glyphosate efficacy on glyphosate-resistant (R) and -susceptible (S) E. indica biotypes. Plants of the R and S biotypes were cultivated under two temperature regimes (high: 30°C/20°C day/night; low: 20°C/15°C day/night). Dose-response experiments showed improved efficacy of glyphosate at the low temperature compared with that at the high temperature for both biotypes. Based on the LD50 values, the R biotype was 8.9 times more resistant to glyphosate than the S biotype at the high temperature; however, the resistance index (R/S) decreased to 3.1 at the low temperature. At 4 days after glyphosate application, shikimic acid accumulation was greater at the low temperature than at the high temperature in plants of both biotypes, and the increase was higher in plants of the R biotype than in the S biotype. At a sublethal glyphosate dose (R: 400 g ai ha-1; S: 200 g ai ha-1), plants grown at the low temperature showed a strong decrease in leaf chlorophyll content and Fv/Fm value compared with those of plants grown at the high temperature and the untreated control. At 3 days after treatment, glyphosate absorption was similar between biotypes at the high temperature, but absorption decreased to 64.9% and 53.1% at the low temperature for the R and S biotypes, respectively. For both biotypes, glyphosate translocation from the leaf to the remainder of the plant was reduced at the low temperature compared with that at the high temperature. No differences in glyphosate translocation were observed between biotypes within each temperature regime. This is the first report on the effect of temperature on glyphosate efficacy on E. indica, and provides important insights for glyphosate application and resistance management.
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Affiliation(s)
- Wenlei Guo
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Chun Zhang
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Siwei Wang
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Taijie Zhang
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Xingshan Tian
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangzhou, China
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Liu Y, Xu X, Liu L, Xu L, Kuang H, Xu C. Development of a GNP-based lateral flow immunoassay for the detection of isoprothiolane in rice samples. Food Chem 2023; 404:134483. [DOI: 10.1016/j.foodchem.2022.134483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/18/2022] [Accepted: 09/29/2022] [Indexed: 11/05/2022]
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Cao J, Tao Y, Zhang Z, Gu T, Li G, Lou Y, Wang H. Mechanism of metamifop resistance in Digitaria ciliaris var. chrysoblephara from Jiangsu, China. FRONTIERS IN PLANT SCIENCE 2023; 14:1133798. [PMID: 36895875 PMCID: PMC9989310 DOI: 10.3389/fpls.2023.1133798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Digitaria ciliaris var. chrysoblephara is one of the most competitive and problematic grass weeds in China. Metamifop is an aryloxyphenoxypropionate (APP) herbicide that inhibits the activity of acetyl-CoA carboxylase (ACCase) of sensitive weeds. Following the introduction of metamifop to China in 2010, it has been continuously used in rice paddy fields, thereby substantially increasing selective pressure for resistant D. ciliaris var. chrysoblephara variants. Here, populations of D. ciliaris var. chrysoblephara (JYX-8, JTX-98, and JTX-99) were observed to be highly resistant to metamifop, with resistance index (RI) values of 30.64, 14.38, and 23.19, respectively. Comparison of resistant and sensitive population ACCase gene sequences revealed that a single nucleotide substitution from TGG to TGC resulted in an amino acid substitution from tryptophan to cysteine at position 2,027 in the JYX-8 population. No corresponding substitution was observed for JTX-98 and JTX-99 populations. The ACCase cDNA of D. ciliaris var. chrysoblephara was successfully obtained by PCR and RACE methods, representing the first amplification of full length ACCase cDNA from Digitaria spp. Investigation of the relative expressions of ACCase gene revealed the lack of significant differences between sensitive and resistant populations before and after herbicide treatments. ACCase activities in resistant populations were less inhibited than in sensitive populations and recovered to the same or even higher levels compared to untreated plants. Whole-plant bioassays were also conducted to assess resistance to other ACCase inhibitors, acetolactate synthase (ALS) inhibitors, auxin mimic herbicide, and protoporphyrinogen oxidase (PPO) inhibitor. Cross-resistance and some multi-resistance were observed in the metamifop-resistant populations. This study is the first to focus on the herbicide resistance of D. ciliaris var. chrysoblephara. These results provide evidence for a target-site resistance mechanism in metamifop-resistant D. ciliaris var. chrysoblephara, while providing a better understanding of cross- and multi-resistance characteristics of resistant populations that will help in the management of herbicide-resistant D. ciliaris var. chrysoblephara.
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Li J, Zhang Z, Lei Q, Lu B, Jin C, Liu X, Wang Y, Bai L. Multiple herbicide resistance in Eleusine indica from sugarcane fields in China. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 182:105040. [PMID: 35249648 DOI: 10.1016/j.pestbp.2022.105040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/05/2022] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
Long-term reliance on herbicide weed control has led to resistance evolution in Eleusine indica in sugarcane fields of Guangxi Zhuang autonomous region. Ninety-six E. indica lines were collected from this region, and their response was tested to six herbicides: glyphosate; glufosinate; PSII-inhibitors diuron and atrazine; and PSI inhibitors paraquat and diquat. Target-site resistance mechanisms were examined in specific lines with multiple resistance to three herbicide modes of action. Of 96 E. indica lines, 51, 26, and 24 lines had resistance to diuron, atrazine, and diquat, respectively, while 14 and 9 had resistance to paraquat and glyphosate. Among 25 lines tested with multiple resistance, 7 lines exhibited resistance to three herbicide modes of action. In two multiple resistant lines (GXER2, GXER5), amplification/over-expression/mutations of the EPSPS gene contributed to the very high-level (up to 109-fold) glyphosate resistance. No target-site mutations/over-expression were identified in the psbA gene in these two lines, so non-target-site resistance mechanisms were likely responsible for the low-level (3-fold) resistance to the PSII herbicides diuron and atrazine. A high-level (23-fold) of paraquat resistance was observed in GXER5, and a low-level (5-fold) paraquat resistance was found in GXER2. Multiple herbicide resistance in E. indica has evolved in sugarcane fields of Guangxi Zhuang autonomous region with diverse resistance mechanisms. Therefore, diversified weed control tactics should be adopted to prevent this weed.
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Affiliation(s)
- Jingbo Li
- Key Laboratory of Green Control of Crop Pests in Hunan Higher Education, Hunan Provincial Collaborative Innovation Center for Field Weed Control, Hunan University of Humanities, Science and Technology, Loudi, China; Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Plant Protection Research Institute, Guangxi Academy of Agricultural Science, Nanning, China
| | - Zhiqian Zhang
- Key Laboratory of Green Control of Crop Pests in Hunan Higher Education, Hunan Provincial Collaborative Innovation Center for Field Weed Control, Hunan University of Humanities, Science and Technology, Loudi, China
| | - Qi Lei
- Key Laboratory of Green Control of Crop Pests in Hunan Higher Education, Hunan Provincial Collaborative Innovation Center for Field Weed Control, Hunan University of Humanities, Science and Technology, Loudi, China
| | - Bugao Lu
- Key Laboratory of Green Control of Crop Pests in Hunan Higher Education, Hunan Provincial Collaborative Innovation Center for Field Weed Control, Hunan University of Humanities, Science and Technology, Loudi, China
| | - Chenzhong Jin
- Key Laboratory of Green Control of Crop Pests in Hunan Higher Education, Hunan Provincial Collaborative Innovation Center for Field Weed Control, Hunan University of Humanities, Science and Technology, Loudi, China
| | - Xiu Liu
- Key Laboratory of Green Control of Crop Pests in Hunan Higher Education, Hunan Provincial Collaborative Innovation Center for Field Weed Control, Hunan University of Humanities, Science and Technology, Loudi, China
| | - Yanhui Wang
- Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Plant Protection Research Institute, Guangxi Academy of Agricultural Science, Nanning, China.
| | - Lianyang Bai
- Hunan Provincial Key Laboratory for Biology and Control of Weed, Hunan Academy of Agricultural Science, Changsha, China.
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12
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Li Z, Li X, Cui H, Zhao G, Zhai D, Chen J. Vegetative and Fecundity Fitness Benefit Found in a Glyphosate-Resistant Eleusine indica Population Caused by 5-Enolpyruvylshikimate-3-Phosphate Synthase Overexpression. FRONTIERS IN PLANT SCIENCE 2021; 12:776990. [PMID: 34868176 PMCID: PMC8639585 DOI: 10.3389/fpls.2021.776990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/25/2021] [Indexed: 05/27/2023]
Abstract
Fitness is an important trait in weed species that have developed herbicide resistance, including resistance to the popular herbicide glyphosate. Fitness cost is commonly found in weeds with glyphosate resistance, which is caused by target-site mutations. In this study, the vegetative and fecundity fitness traits in a glyphosate-resistant (GR) Eleusine indica population caused by 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) overexpression were investigated under glyphosate-free conditions. The results showed that the resistance index of the population resistant (R) to glyphosate compared with that of the population susceptible (WT) to it was approximately 4.0. Furthermore, EPSPS expression level in the R plants was 20.1-82.7 times higher than that in the WT plants. The dry weight of the R population was significantly higher than that of the WT population at the later growth stage after planting; a similar trend was observed for leaf area. In addition, seed production in the R population was 1.4 times higher than that in the WT population. The R and WT populations showed similar maximum germination rates and T50 values. UPLC-MS/MS was performed for the metabolic extracts prepared from the leaves of R and WT populations to address changes in the metabolome. A total of 121 differential metabolites were identified between R and WT individuals. The levels of 6-hydroxy-1H-indole-3-acetamide and indole acetaldehyde, which are associated with auxin synthesis, were significantly higher in plants of the R population than in those of the WT population. However, some secondary metabolite levels were slightly lower in the R population than in the WT population. To conclude, in this study, vegetative and fecundity fitness benefits were found in the GR E. indica population. The results of metabolome analysis indicate that the increase in 6-hydroxy-1H-indole-3-acetamide and indole acetaldehyde levels may be the result of fitness benefit. Further studies should be conducted to confirm the functions of these metabolites.
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Affiliation(s)
- Zhiling Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiangju Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hailan Cui
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guodong Zhao
- School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Dan Zhai
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Jingchao Chen
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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13
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Chen J, Wei S, Huang H, Cui H, Zhang C, Li X. Characterization of glyphosate and quizalofop-p-ethyl multiple resistance in Eleusine indica. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 176:104862. [PMID: 34119213 DOI: 10.1016/j.pestbp.2021.104862] [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] [Received: 02/12/2021] [Revised: 04/20/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
Glyphosate and Acetyl-coenzyme A Carboxylase (ACCase) inhibitors are popular herbicides that control goosegrass. However, some populations are difficult to control due to resistance resulting from the increasing selection pressure. The objectives of this research were to detect the multiple resistance levels, resistance mechanisms, and fitness costs of two goosegrass populations collected in China. The resistance indices of two resistant populations (denominated as R1 and R2) to glyphosate were 3.8 and 2.3, respectively; and it was 18.0 and 14.2 to quizalofop-p-ethyl, respectively. Shikimate accumulation in R1 and R2 populations was only 8% of that of the susceptible population after glyphosate treatment. A Pro-106-Ala mutation in EPSPS and an Asp-2078-Gly mutation in ACCase were present in both resistant populations. Both the expression level of EPSPS and ACCase in resistant populations were similar to that of susceptible populations. The leaf area of the individuals in wild-type populations was more than three times of the leaf area in the resistant populations. Similarly, resistant plants were 45-49% shorter, had 70-76% less fresh shoot weight, and 67-69% fewer seeds than wild-type plants. Goosegrass populations have evolved multiple resistance to glyphosate and the ACCase inhibitor quizalofop-p-ethyl in China. The Pro-106-Ala mutation in the EPSPS and the Asp-2078-Gly mutation in the ACCase were responsible for this resistance. In addition, a fitness cost exists in the resistant populations, and more work should conduct to clear which mutation is responsible for the fitness penalty.
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Affiliation(s)
- Jingchao Chen
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shouhui Wei
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hongjuan Huang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hailan Cui
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chaoxian Zhang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Xiangju Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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14
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Deng W, Yang M, Li Y, Xia Z, Chen Y, Yuan S, Yang Q. Enhanced metabolism confers a high level of cyhalofop-butyl resistance in a Chinese sprangletop (Leptochloa chinensis (L.) Nees) population. PEST MANAGEMENT SCIENCE 2021; 77:2576-2583. [PMID: 33497007 DOI: 10.1002/ps.6297] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/19/2021] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Chinese sprangletop (Leptochloa chinensis (L.) Nees) is one of main grass weeds invading Chinese rice fields. The target-site resistance (TSR) of cyhalofop-butyl have been widely reported in L. chinensis populations, but the non-target-site resistance (NTSR) mechanisms have not yet been well-characterized. This study aims to investigate the likely NTSR in a cyhalofop-butyl-resistant L. chinensis population (YZ-R), which was collected from Yangzhou city, Jiangsu Province, China. RESULTS Dose-response assays showed the YZ-R population exhibited 191.6-fold resistance to cyhalofop-butyl, compared to the susceptible population (YZ-S). This resistance is not target-site based, because no mutations in the two ACCase genes were detected in the YZ-R plants compared to the YZ-S plants, and the ACCase genes expression levels were similar in YZ-S and YZ-R plants. In addition, the cytochrome P450 inhibitor malathion and piperonyl butoxide (PBO), and glutathione S-transferase (GST) inhibitor 4-chloro-7-nitrobenzoxadiazole (NBD-Cl) did not significantly reverse cyhalofop-butyl resistance in the YZ-R population. However, liquid chromatography-mass spectrometry (LC-MS) analysis indicated that the metabolic rates of cyhalofop acid in YZ-R plants was significantly faster (5 to 10- fold) than in YZ-S plants. Furthermore, the YZ-R population showed no cross-resistance to other ACCase-inhibiting herbicides. CONCLUSION These results indicated that cyhalofop-butyl resistance in the YZ-R population is due to non-target-site based enhanced herbicide metabolism. Resistance in this population is likely involved in a specific detoxification enzyme, with possible high catalytic efficiency and strong substrate specificity, therefore leading to high-level and single resistance to cyhalofop-butyl. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Wei Deng
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Mengting Yang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Yang Li
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Zhiming Xia
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Yongrui Chen
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Shuzhong Yuan
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Qian Yang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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