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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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Zhou Z, Jiang Q, Qiu Z, Hou X, Yang X, Yang Y, Hao T, Guo D, Wang J, Li Y, Liu Q, Ling X, Zhang B. Differential Resistance to Acetyl-CoA Carboxylase Inhibitors in Rice: Insights from Two Distinct Target-Site Mutations. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12029-12044. [PMID: 38752706 DOI: 10.1021/acs.jafc.4c01889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Weeds present a significant challenge to agricultural productivity, and acetyl-CoA carboxylase (ACCase)-inhibiting herbicides have proven to be effective in managing weed populations in rice fields. To develop ACCase-inhibiting herbicide-resistant rice, we generated mutants of rice ACCase (OsACC) featuring Ile-1792-Leu or Gly-2107-Ser substitutions through ethyl methyl sulfonate (EMS) mutagenesis. The Ile-1792-Leu mutant displayed cross-resistance to aryloxyphenoxypropionate (APP) and phenylpyrazoline (DEN) herbicides, whereas the Gly-2107-Ser mutants primarily exhibited cross-resistance to APP herbicides with diminished resistance to the DEN herbicide. In vitro assays of the OsACC activity revealed an increase in resistance to haloxyfop and quizalofop, ranging from 4.84- to 29-fold in the mutants compared to that in wild-type. Structural modeling revealed that both mutations likely reduce the binding affinity between OsACC and ACCase inhibitors, thereby imparting resistance. This study offers insights into two target-site mutations, contributing to the breeding of herbicide-resistant rice and presenting alternative weed management strategies in rice cultivation.
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Affiliation(s)
- Zhenzhen Zhou
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Qun Jiang
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya Hainan 572025, China
| | - Zeyu Qiu
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Xiaodong Hou
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Xia Yang
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Yuwen Yang
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Tingting Hao
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Dongshu Guo
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Jinyan Wang
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Yongfeng Li
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Qing Liu
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
- College of Agriculture, Yangzhou University, Yangzhou Jiangsu 225009, China
| | - Xitie Ling
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
| | - Baolong Zhang
- Provincial Key Laboratory of Agrobiology and Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing Jiangsu 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing Jiangsu 210014, China
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya Hainan 572025, China
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Hu T, Fang H, Pan Q, Xu H, Lv T, Fan X, Wang Y, Guo Y, Mou L, Xu J, Zhu J, Matsumoto H, Wang M. Seed microbiome-mediated herbicide resistance evolution in weeds. THE NEW PHYTOLOGIST 2024; 242:333-343. [PMID: 38062878 DOI: 10.1111/nph.19459] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/17/2023] [Indexed: 03/22/2024]
Abstract
See also the Commentary on this article by Zhang et al., 242: 327–330.
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Affiliation(s)
- Tingting Hu
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Hongda Fang
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Qianqian Pan
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Haorong Xu
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Tianxing Lv
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Xiaoyan Fan
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Yue Wang
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Yichun Guo
- Phytobiome Ecological Science & Technology, Shanghai, 200122, China
| | - Lei Mou
- Phytobiome Ecological Science & Technology, Shanghai, 200122, China
| | - Jiayu Xu
- Phytobiome Ecological Science & Technology, Shanghai, 200122, China
| | - Jinwen Zhu
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Haruna Matsumoto
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
| | - Mengcen Wang
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Rice Biology and Breeding, Zhejiang University, Hangzhou, 310058, China
- Global Education Program for AgriScience Frontiers, Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
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Liao M, Jiang M, Wang X, Hu W, Zhao N, Cao H. The Cys-2088-Arg mutation in the ACCase gene and enhanced metabolism confer cyhalofop-butyl resistance in Chinese sprangletop (Leptochloa chinensis). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 200:105826. [PMID: 38582590 DOI: 10.1016/j.pestbp.2024.105826] [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: 11/21/2023] [Revised: 02/05/2024] [Accepted: 02/08/2024] [Indexed: 04/08/2024]
Abstract
Acetyl-CoA carboxylase (ACCase)-inhibiting herbicides are among the most commonly used herbicides to control grassy weeds, especially Leptochloa chinensis, in rice fields across China. Herein, we collected a suspected resistant (R) population of L. chinensis (HFLJ16) from Lujiang county in Anhui Province. Whole plant dose response tests showed that, compared with the susceptible (S) population, the R population showed high resistance to cyhalofop-butyl (22-fold) and displayed cross-resistance to metamifop (9.7-fold), fenoxaprop-P-ethyl (18.7-fold), quizalofop-P-ethyl (7.6-fold), clodinafop-propargyl (12-fold) and clethodim (8.4-fold). We detected an amino acid substitution (Cys-2088-Arg) in the ACCase of resistant L. chinensis. However, ACCase gene expression levels were not significantly different (P > 0.05) between R plants and S plants, without or with cyhalofop-butyl treatment. Furthermore, pretreatment with piperonyl butoxide (PBO, a cytochrome P450 monooxygenase (CYP450) inhibitor) or 4-chloro-7-nitrobenzoxadiazole (NBD-Cl, a glutathione-S-transferase (GST) inhibitor), inhibited the resistance of the R population to cyhalofop-butyl significantly (by approximately 60% and 26%, respectively). Liquid chromatography tandem mass spectrometry analysis showed that R plants metabolized cyhalofop-butyl and cyhalofop acid (its metabolite) significantly faster than S plants. Three CYP450 genes, one GST gene, and two ABC transporter genes were induced by cyhalofop-butyl and were overexpressed in the R population. Overall, GST-associated detoxification, CYP450 enhancement, and target-site gene mutation are responsible for the resistance of L. chinensis to cyhalofop-butyl.
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Affiliation(s)
- Min Liao
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Minghao Jiang
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Xumiao Wang
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Wei Hu
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Ning Zhao
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Haiqun Cao
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
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Iwakami S, Ishizawa H, Sugiura K, Kashiwagi K, Oga T, Niwayama S, Uchino A. Syntenic analysis of ACCase loci and target-site-resistance mutations in cyhalofop-butyl resistant Echinochloa crus-galli var. crus-galli in Japan. PEST MANAGEMENT SCIENCE 2024; 80:627-636. [PMID: 37743410 DOI: 10.1002/ps.7789] [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: 07/25/2023] [Revised: 09/07/2023] [Accepted: 09/25/2023] [Indexed: 09/26/2023]
Abstract
BACKGROUND Recently, suspected cyhalofop-butyl-resistant populations of allohexaploid weed Echinochloa crus-galli var. crus-galli were discovered in rice fields in Aichi Prefecture, Japan. Analyzing the target-site ACCase genes of cyhalofop-butyl helps understand the resistance mechanism. However, in E. crus-galli, the presence of multiple ACCase genes and the lack of detailed gene investigations have complicated the analysis of target-site genes. Therefore, in this study, we characterized the herbicide response of E. crus-galli lines and thoroughly characterized the ACCase genes, including the evaluation of gene mutations in the ACCase genes of each line. RESULT Four suspected resistant lines collected from Aichi Prefecture showed varying degrees of resistance to cyhalofop-butyl and other FOP-class ACCase inhibitors but were sensitive to herbicides with other modes of action. Through genomic analysis, six ACCase loci were identified in the E. crus-galli genome. We renamed each gene based on its syntenic relationship with other ACCase genes in the Poaceae species. RNA-sequencing analysis revealed that all ACCase genes, except the pseudogenized copy ACCase2A, were transcribed at a similar level in the shoots of E. crus-galli. Mutations known to confer resistance to FOP-class herbicides, that is W1999C, W2027C/S and I2041N, were found in all resistant lines in either ACCase1A, ACCase1B or ACCase2C. CONCLUSION In this study, we found that the E. crus-galli lines were resistant exclusively to ACCase-inhibiting herbicides, with a target-site resistance mutation in the ACCase gene. Characterization of ACCase loci in E. crus-galli provides a basis for further research on ACCase herbicide resistance in Echinochloa spp. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Satoshi Iwakami
- Graduate School of Agriculture, Kyoto University, Kitashirakawa-Oiwake-cho, Kyoto, Japan
| | - Hinata Ishizawa
- Graduate School of Agriculture, Kyoto University, Kitashirakawa-Oiwake-cho, Kyoto, Japan
| | - Kai Sugiura
- Graduate School of Agriculture, Kyoto University, Kitashirakawa-Oiwake-cho, Kyoto, Japan
| | | | - Toshiya Oga
- Aichi Agricultural Research Center, Nagakute, Japan
| | | | - Akira Uchino
- Central Region Agricultural Research Center, National Agriculture and Food Research Organization, Tsu, Japan
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Ferreira LAI, de Oliveira RS, Constantin J, Brunharo C. Evolution of ACCase-inhibitor resistance in Chloris virgata is conferred by a Trp2027Cys mutation in the herbicide target site. PEST MANAGEMENT SCIENCE 2023; 79:5220-5229. [PMID: 37592752 DOI: 10.1002/ps.7723] [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: 07/07/2023] [Revised: 08/13/2023] [Accepted: 08/18/2023] [Indexed: 08/19/2023]
Abstract
BACKGROUND Chloris virgata is a troublesome weed in tropical regions. With the evolution of glyphosate resistance in key grass species, acetyl CoA carboxylase (ACCase) inhibitors have become a commonly used tool in soybean production areas in Brazil. We assessed if suspected resistant populations exhibited cross resistance to the different classes of ACCase inhibitors and investigated the resistance mechanisms in C. virgata. RESULTS Dose-response experiments revealed resistance to haloxyfop-methyl and pinoxaden, with 432- and 3-fold resistance, respectively, compared to susceptible populations. Due to the lack of genetic resources for C. virgata, we sequenced, assembled, and annotated the genome using short-read Illumina technology. The k-mer analysis estimated a genome size of approximately 336 Mbp, with BUSCO completeness of 97%, and over 36 000 gene models were annotated. We examined if ACCase copy number variation and increased gene expression were involved in the resistance phenotype and found no difference when compared to a susceptible population. A mutation was detected in ACCase that encodes for amino acid position 2027, resulting in a tryptophan-to-cysteine (Trp2027Cys) substitution. We found the resistant population absorbed 11.4% less herbicide and retained 21% more herbicide on the treated leaf compared to the susceptible population. We developed a genotyping assay targeting the resistance-endowing Trp2027Cys substitution for quick resistance diagnosis. CONCLUSION A Trp2027Cys amino acid substitution in ACCase confers resistance to haloxyfop and pinoxaden in C. virgata. We provide important insights into the evolutionary history of C. virgata and a draft genome as a useful resource to further our understanding of the biology in the genus Chloris. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Luiz Augusto Inojosa Ferreira
- Department of Agronomy, Center for Advanced Studies in Weed Science, State University of Maringá, Maringá, Brazil
- Department of Plant Science, Applied Weed Physiology Laboratory, The Pennsylvania State University, University Park, PA, USA
| | - Rubem Silvério de Oliveira
- Department of Agronomy, Center for Advanced Studies in Weed Science, State University of Maringá, Maringá, Brazil
| | - Jamil Constantin
- Department of Agronomy, Center for Advanced Studies in Weed Science, State University of Maringá, Maringá, Brazil
| | - Caio Brunharo
- Department of Plant Science, Applied Weed Physiology Laboratory, The Pennsylvania State University, University Park, PA, USA
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Sun P, Niu L, Lan X, Yu H, Cui H, Chen J, Li X. Enhanced metabolic resistance mechanism endows resistance to metamifop in Echinochloa crus-galli (L.) P. Beauv. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 197:105656. [PMID: 38072531 DOI: 10.1016/j.pestbp.2023.105656] [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: 09/18/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 12/18/2023]
Abstract
Barnyardgrass (Echinochloa crus-galli (L.) P. Beauv.), one of the worst weeds in paddy fields in China, has been frequently reported evolving resistance to acetyl-CoA carboxylase (ACCase) inhibiting herbicides. However, in the previous research, more attention was paid to target-site resistance (TSR) mechanisms, the non-target-site resistance (NTSR) mechanisms have not been well-established. In this study, the potential mechanism of resistance in a metamifop-resistant E. crus-galli collected from Kunshan city, Jiangsu Province, China was investigated. Dose-response assays showed that the phenotypic resistant population (JS-R) has evolved 4.3-fold resistance to metamifop compared with the phenotypic susceptible population (YN-S). The ACCase CT gene sequencing and relative ACCase gene expression levels studies showed that no mutations were detected in the ACCase CT gene in both YN-S and JS-R, and there was no significant difference in the relative ACCase gene expression between YN-S and JS-R. After the pre-processing of glutathione-S-transferase (GSTs) inhibitor NBD-Cl, the resistance level of JS-R to metamifop was reversed 18.73%. Furthermore, the GSTs activity of JS-R plants was significantly enhanced compared to that of YN-S plants. UPLC-MS/MS revealed that JS-R plants had faster metabolic rates to metamifop than YN-S plants. Meanwhile, the JS-R popultion exhibited resistant to cyhalofop-butyl and penoxsulam. In summary, this study presented a novel discovery regarding the global emergence of metabolic resistance to metamifop in E. crus-galli. The low-level resistance observed in the JS-R population was not found to be related to TSR but rather appeared to be primarily associated with the overexpression of genes in the GSTs metabolic enzyme superfamily.
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Affiliation(s)
- Penglei Sun
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Liangliang Niu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xianmin Lan
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Institute of Plant Protection, Guizhou Academy of Agricultural Science, Guiyang 550006, China
| | - Haiyan Yu
- 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
| | - Jingchao Chen
- 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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Cao Z, Liu M, Cao W, Zhan Y, Bai L, Pan L. A glutathione S-transferase and a cytochrome P450 may confer cyhalofop-butyl resistance in Leptochloa chinensis (L.) Nees. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 197:105691. [PMID: 38072546 DOI: 10.1016/j.pestbp.2023.105691] [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: 09/06/2023] [Revised: 10/30/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023]
Abstract
BACKGROUND Leptochloa chinensis (L.) Nees is a troublesome weed across China in rice fields, and a suspected L. chinensis resistant population (R) that has survived the recommended field dose of cyhalofop-butyl was collected in a rice field of Hunan Province, China. In this study, we aimed to determine the acetyl-CoA carboxylase-inhibiting herbicide resistance profile of this R population and to investigate its mechanisms of resistance to cyhalofop-butyl. RESULTS Compared with the susceptible population (S), the R population was confirmed to be 18.9-, 3.2-, 4.1-, 3.6- and 5.8- fold resistant to the APP herbicides cyhalofop-butyl, haloxyfop-P-methyl, clodinafop-propargyl, metamifop and fenoxaprop-P-ethyl, respectively. ACCase gene sequencing analysis revealed no known resistance mutations for TSR in the R population. Pretreatment with the glutathione S-transferase (GST) inhibitor 4-chloro-7-nitrobenzoxadiazole (NBD-Cl) and cytochrome P450 (CYP450) inhibitor malathion reversed resistance to cyhalofop-butyl. The GST gene GSTU1 and CYP450 gene CYP707A5 were constitutively upregulated in the R population according to RNA-seq analysis and RT-qPCR verification. The molecular docking results indicated a good affinity of the active site for five APP herbicides with GSTU1 and CYP707A5. CONCLUSION This study shows that the GSTU1 and CYP707A5 genes expressed highly in the R population may be responsible for cyhalofop-butyl resistance in L. chinensis.
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Affiliation(s)
- Ziheng Cao
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Min Liu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Wanfen Cao
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - You Zhan
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
| | - Lianyang Bai
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China.
| | - Lang Pan
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China.
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9
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Deng W, Li Y, Yao S, Wu J, Zhu A, Yang Q, Yuan S. Current status of cyhalofop-butyl and metamifop resistance and diversity of the ACCase gene mutations in Chinese sprangletop (Leptochloa chinensis) from China. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 197:105648. [PMID: 38072523 DOI: 10.1016/j.pestbp.2023.105648] [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: 08/22/2023] [Revised: 10/07/2023] [Accepted: 10/12/2023] [Indexed: 12/18/2023]
Abstract
Leptochloa chinensis populations in China have evolved widespread resistance to acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicides cyhalofop-butyl (CyB) and metamifop (Met). 124 L. chinensis populations, randomly collected from rice fields in Jiangsu Province, were surveyed for CyB and Met resistance status, and all potential ACCase gene resistance-conferring mutations and effective pre-emergence herbicides for its control were investigated. Single-dose tests confirmed that 82 (66.1%) and 70 (56.4%) populations evolved resistance to CyB and Met, respectively. ACCase sequencing revealed that 56.4% of the populations contain plants with diverse target-site ACCase mutations (Ile1781Leu, Trp1999Cys, Trp2027Cys, Trp2027Ser, Ile2041Asn, Gly2096Ala, and in particular, a Leu1818Phe mutation). Notably, the Leu1818Phe mutation had been detected in 8 resistant populations, indicating this mutation was prone to occur in L. chinensis. Additionally, 9.7% of the populations may have single metabolic resistance to CyB, as these populations was susceptible to Met, and no any ACCase mutations were found. Moreover, the resistant populations with different ACCase mutations showed 6.5 to 33.6-fold resistance to CyB, and 4.4 to 82.6-fold resistance to Met. Importantly, five pre-emergence herbicides, including pretilachlor, pendimethalin, clomazone, pyraclonil, and mefenacet, all exhibited good control effect on resistant L. chinensis populations. This work confirmed the prevalence and distribution of CyB and Met resistance in L. chinensis. Target-site ACCase mutations made a major contribution to CyB and Met resistance. Pre-emergence herbicides could be valuable tools for management of resistant L. chinensis populations.
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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
| | - Jiawen Wu
- Plant Protection and Quarantine Station of Jiangsu province, Nanjing, China
| | - Axiu Zhu
- Plant Protection and Quarantine Station of Jiangsu province, Nanjing, 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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10
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Ju B, Liu M, Fang Y, Liu L, Pan L. First Report on Resistance to HPPD Herbicides Mediated by Nontarget-Site Mechanisms in the Grass Leptochloa chinensis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:17669-17677. [PMID: 37889480 DOI: 10.1021/acs.jafc.3c04323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
The emergence of 4-hydroxyphenylpyruvate dioxygenase (HPPD) herbicides as efficacious target-site herbicides has been noteworthy. In recent years, only four species of broadleaf weeds have developed resistance due to the long-term widespread use of HPPD herbicides. This study represents the first reported instance of a grass weed exhibiting resistance to HPPD inhibitors. We identified a new HPPD-resistant Chinese sprangletop [Leptochloa chinensis (L.) Nees] population (R population). At the recommended dose of tripyrasulfone, the inhibition rate of the R population was only half that of the sensitive population (S). The mechanism underlying resistance does not involve target-site resistance triggered by amino acid mutations or depend on disparities within the HPPD INHIBITOR SENSITIVE 1 (HIS1) gene. The impetus for resistance appears to be interlinked with the metabolic activities of cytochrome P450 monooxygenase (P450) and glutathione S-transferase (GST) family genes. Following RNA sequencing (RNA-seq) and quantitative real-time PCR (qRT-PCR) validation, the study suggests that five P450 genes, CYP71C1, CYP74A2, CYP72A1, CYP84A1, and CYP714C2, alongside a single GST gene GSTF1, may be implicated in the process of metabolic detoxification.
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Affiliation(s)
- Boming Ju
- Hunan Agricultural University, Changsha 410128, People's Republic of China
| | - Min Liu
- Hunan Agricultural University, Changsha 410128, People's Republic of China
| | - Yuhang Fang
- Hunan Agricultural University, Changsha 410128, People's Republic of China
| | - Leicheng Liu
- Hunan Agricultural University, Changsha 410128, People's Republic of China
| | - Lang Pan
- Hunan Agricultural University, Changsha 410128, People's Republic of China
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11
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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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12
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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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13
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Xiong G, Hu H, Zhang H, Zhang J, Cao Z, Lu H, Liao X. Cyhalofop-butyl exposure induces the severe hepatotoxicity and immunotoxicity in zebrafish embryos. FISH & SHELLFISH IMMUNOLOGY 2023; 134:108644. [PMID: 36842639 DOI: 10.1016/j.fsi.2023.108644] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 02/11/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Cyhalofop-butyl (CyB) is a highly effective herbicide and is widely used for weed control in paddy fields. Because CyB is easily residual in the aquatic environment, its potential harm to aquatic organisms has attracted much attention and has not been fully understood. In this study, we systematically explored the hepatotoxic and immunotoxic effects of CyB exposure in zebrafish embryos. Firstly, CyB induced a decrease in the survival rate of zebrafish and led to a series of developmental abnormalities. Meanwhile, CyB can significantly reduce the size of zebrafish liver tissue and the number of hepatocytes in a dose-dependent manner. Secondly, the number of macrophages and neutrophils significantly decreased but the antioxidant enzyme activities such as CAT and MDA were greatly elevated upon CyB exposure. Thirdly, RNA-Seq analysis identified 1, 402 differentially expressed genes (DEGs) including 621 up-regulated and 781 down-regulated in zebrafish embryos after CyB exposure. KEGG and GO functional analysis revealed that the metabolic pathways of drug metabolism-cytochrome P450, biosynthesis of antibiotics, and metabolism of xenobiotics, along with oxidation-reduction process, high-density lipoprotein particle and cholesterol transport activity were significantly enriched after CyB exposure. Besides, hierarchical clustering analysis suggested that the genes involved in lipid metabolism, oxidative stress and innate immunity were largely activated in CyB-exposed zebrafish. Moreover, CyB induced zebrafish liver injury and increased hepatocyte apoptosis, which increased the protein expression levels of Bax, TLR4, NF-kB p65 and STAT3 in zebrafish. Finally, specific inhibition of TLR signaling pathway by TLR4 knock-down could significantly reduce the expression of inflammatory cytokines induced by CyB exposure. Taken together, these informations demonstrated that CyB could induce the hepatotoxicity and immunotoxicity in zebrafish embryos, and the expression levels of many genes involved in lipid metabolism and immune inflammation were obtained by RNA-Seq analysis. This study provides valuable information for future elucidating the aquatic toxicity of herbicide in aquatic ecosystems.
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Affiliation(s)
- Guanghua Xiong
- College of Biology and Food Engineering, Key Laboratory of Embryo Development and Reproductive Regulation of Anhui Province, Fuyang Normal University, Fuyang, 236041, Anhui, China; College of Life Sciences, Jiangxi Key Laboratory of Developmental Biology of Organs, Jinggangshan University, Ji'an, 343009, Jiangxi, China.
| | - Hongmei Hu
- College of Life Sciences, Jiangxi Key Laboratory of Developmental Biology of Organs, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Haiyan Zhang
- College of Life Sciences, Jiangxi Normal University, Nanchang, 330022, Jiangxi, China
| | - Jun'e Zhang
- College of Life Sciences, Jiangxi Normal University, Nanchang, 330022, Jiangxi, China
| | - Zigang Cao
- College of Life Sciences, Jiangxi Key Laboratory of Developmental Biology of Organs, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Huiqiang Lu
- College of Life Sciences, Jiangxi Key Laboratory of Developmental Biology of Organs, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Xinjun Liao
- College of Life Sciences, Jiangxi Key Laboratory of Developmental Biology of Organs, Jinggangshan University, Ji'an, 343009, Jiangxi, China.
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14
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First Asp-2078-Gly Mutation Conferring Resistance to Different ACCase Inhibitors in a Polypogon fugax Population from China. Int J Mol Sci 2022; 24:ijms24010528. [PMID: 36613971 PMCID: PMC9820770 DOI: 10.3390/ijms24010528] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/18/2022] [Accepted: 12/19/2022] [Indexed: 12/30/2022] Open
Abstract
Asia minor bluegrass (Polypogon fugax) is a common and problematic weed throughout China. P. fugax that is often controlled by acetyl-CoA carboxylase (ACCase) inhibitors in canola fields. Herein, we confirmed a P. fugax population (R) showing resistance to all ACCase inhibitors tested with resistance indexes ranging from 5.4-18.4. We further investigated the resistance mechanisms of this R population. Molecular analyses revealed that an amino acid mutation (Asp-2078-Gly) was present in the R population by comparing ACCase gene sequences of the sensitive population (S). In addition, differences in susceptibility between the R and S population were unlikely to be related to herbicide metabolism. Furthermore, a new derived cleaved amplified polymorphic sequence (dCAPS) method was developed for detecting the Asp-2078-Gly mutation in P. fugax efficiently. We found that 93.75% of plants in the R population carried the Asp-2078-Gly mutation, and all the herbicide-resistant phenotype of this R population is inseparable from this mutation. This is the first report of cross resistance to ACCase inhibitors conferred by the Asp-2078-Gly target-site mutation in P. fugax. The research suggested the urgent need to improve the diversity of weed management practices to prevent the widespread evolution of herbicide resistance in P. fugax in China.
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15
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Zhang Y, Chen L, Song W, Cang T, Xu M, Wu C. Diverse mechanisms associated with cyhalofop-butyl resistance in Chinese sprangletop ( Leptochloa chinensis (L.) Nees): Characterization of target-site mutations and metabolic resistance-related genes in two resistant populations. FRONTIERS IN PLANT SCIENCE 2022; 13:990085. [PMID: 36518516 PMCID: PMC9742530 DOI: 10.3389/fpls.2022.990085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 11/14/2022] [Indexed: 05/25/2023]
Abstract
Resistance of Chinese sprangletop (Leptochloa chinensis (L.) Nees) to the herbicide cyhalofop-butyl has recently become a severe problem in rice cultivation. However, the molecular mechanisms of target-site resistance (TSR) in cyhalofop-butyl-resistant L. chinensis as well as the underlying non-target-site resistance (NTSR) have not yet been well-characterized. This study aimed to investigate cyhalofop-butyl resistance mechanisms using one susceptible population (LC-S) and two resistant populations (LC-1701 and LC-1704) of L. chinensis. We analyzed two gene copies encoding the entire carboxyltransferase (CT) domain of chloroplastic acetyl-CoA carboxylase (ACCase) from each population. Two non-synonymous substitutions were detected in the resistant L. chinensis populations (Trp2027-Cys in the ACCase1 of LC-1701 and Leu1818-Phe in the ACCase2 of LC-1704), which were absent in LC-S. As Trp2027-Cys confers resistance to ACCase-inhibiting herbicides, the potential relationship between the novel Leu1818-Phe mutation and cyhalofop-butyl resistance in LC-1704 was further explored by single-nucleotide polymorphism (SNP) detection. Metabolic inhibition assays indicated that cytochrome P450 monooxygenases (P450s) and glutathione S-transferases (GSTs) contributed to cyhalofop-butyl resistance in specific resistant populations. RNA sequencing showed that the P450 genes CYP71Z18, CYP71C4, CYP71C1, CYP81Q32, and CYP76B6 and the GST genes GSTF11, GSTF1, and GSTU6 were upregulated in at least one resistant population, which indicated their putative roles in cyhalofop-butyl resistance of L. chinensis. Correlation analyses revealed that the constitutive or inducible expression patterns of CYP71C4, CYP71C1, GSTF1, and GSTU6 in L. chinensis were strongly associated with the resistant phenotype. For this reason, attention should be directed towards these genes to elucidate metabolic resistance to cyhalofop-butyl in L. chinensis. The findings of this study improve the understanding of mechanisms responsible for resistance to ACCase-inhibiting herbicides in grass-weed species at the molecular level, thus aiding in the development of weed management strategies that delay the emergence of resistance to this class of pest control products.
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16
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Jiang M, Wang Y, Li W, Li Q, Zhang J, Liao M, Zhao N, Cao H. Investigating resistance levels to cyhalofop-butyl and mechanisms involved in Chinese sprangletop (Leptochloa chinensis L.) from Anhui Province, China. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 186:105165. [PMID: 35973761 DOI: 10.1016/j.pestbp.2022.105165] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Chinese sprangletop (Leptochloa chinensis (L.) Nees) is a common grass species that severely threatens rice (Oryza sativa L.) cropping systems globally. Cyhalofop-butyl is a highly efficient acetyl-CoA carboxylase (ACCase)-inhibiting herbicide widely used for control of this species in China. However, some L. chinensis populations have gradually evolved resistance to this herbicide in recent years. To better understand the cyhalofop-butyl resistance status of L. chinensis in the major rice planting area of the middle-lower Yangtze River basin, 73 populations collected from the rice fields across Anhui Province were investigated for cyhalofop-butyl susceptibility and potential herbicide resistance-conferring mutations. Single-dose testing indicated that of the 73 populations, 25 had evolved resistance to cyhalofop-butyl and were separately classified as "RRR" and "RR" populations according to their fresh weight reductions, 8 had a high risk of evolving cyhalofop-butyl resistance and were classified as "R?" populations, and 40 were susceptible and classified as "S" populations. Whole-plant dose-response experiments showed that the resistance index (RI) of these R?, RR, and RRR populations to cyhalofop-butyl ranged from 2.47 to 36.94. Target gene sequencing identified seven ACCase resistance mutations (I1781L, W1999C, W2027S, W2027L, W2027C, I2041N, and D2078G), with W1999C and W2027C the two most common detected in about three quarters of all the resistant populations. Seven populations including LASC3, BBHY1, AQQS1, HFFD3, HFFD4, AQWJ1, and HFLJ6 each carrying a specific ACCase mutation were tested for their cross- and multiple-resistance patterns. Compared with a standard susceptible population HFLY1, the seven resistant populations showed distinct cross-resistance. All had low- to high-level cross-resistance to metamifop (RIs ranging from 6.16 to 17.65), fenoxaprop-P-ethyl (RIs ranging from 6.39 to 24.08), and quizalofop-P-ethyl (RIs ranging from 2.20 to 10.25), but responded differently to clodinafop-propargyl and clethodim. Multiple-resistance testing suggested that the seven resistant populations were all susceptible to the 4-hydroxyphenylpyruvate dioxygenase inhibitor tripyrasulfone, the protoporphyrinogen oxidase inhibitor oxyfluorfen, and the auxin mimic herbicide florpyrauxifen. In conclusion, this study has shown that cyhalofop-butyl resistance was prevalent in L. chinensis in Anhui Province, China, and target site mutation was one of the most common resistance mechanisms.
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Affiliation(s)
- Minghao Jiang
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Yafei Wang
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Wei Li
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Qi Li
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Jingxu Zhang
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Min Liao
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Ning Zhao
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Haiqun Cao
- Anhui Province key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
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17
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Yang J, Jiang M, Jia S, Liao M, Cao H, Zhao N. Expression Pattern of Entire Cytochrome P450 Genes and Response of Defenses in a Metabolic-Herbicide-Resistant Biotype of Polypogon fugax. FRONTIERS IN PLANT SCIENCE 2022; 13:868807. [PMID: 35401603 PMCID: PMC8990753 DOI: 10.3389/fpls.2022.868807] [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: 02/03/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
Enhanced herbicide metabolism mediated by cytochrome P450s has been proposed as one of the major mechanisms of resistance to fenoxaprop-P-ethyl in a metabolic-herbicide-resistant biotype of Asia minor bluegrass (Polypogon fugax Nees ex Steud.). Upon pre-treatment with the P450 inhibitor piperonyl butoxide, a remarkable reduction in metabolic rates of the phytotoxic fenoxaprop-P has been observed in the resistant plants, implying that constitutive and/or fenoxaprop-P-ethyl-induced up-regulation of specific P450 isoforms are involved in the fenoxaprop-P-ethyl resistance. However, which P450 gene(s) were responsible for the metabolic resistance is still unknown. In this present study, based on the abundant gene resources of P. fugax established previously, a total of 48 putative P450 genes were isolated from the metabolic-herbicide-resistant plants and used for gene expression analysis. The most suitable reference genes for accurate normalization of real-time quantitative PCR data were first identified in P. fugax and recognized as actin (ACT), 18S rRNA (18S), and ribulose-1,5-bisphosphate carboxylase oxygenase (RUBP) under fenoxaprop-P-ethyl stress, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and elongation factor 1α (EF1α) under mesosulfuron-methyl stress, and ACT, EF1α, eukaryotic initiation factor 4a (EIF4A), and 25S rRNA (25S) at different growth stages. Expression analysis of the putative P450 genes revealed that six genes, respectively, annotated as CYP709B1, CYP71A1-4, CYP711A1, CYP78A9, P450-11, and P450-39 were up-regulated more than 10-fold in the resistant plants by fenoxaprop-P-ethyl treatment, and all of them exhibited constitutively and/or herbicide-induced higher transcript levels in the fenoxaprop-P-ethyl-resistant than in the susceptible plants. Three genes, respectively, annotated as CYPRO4, CYP313A4, and CYP51H11 constantly up-regulated in the resistant than in the susceptible plants after fenoxaprop-P-ethyl treatment. Up-regulated expressions of these specific P450 genes were consistent with the higher P450 contents determined in the resistant plants. These results will help to elucidate the mechanisms for P450-mediated metabolic-herbicide resistance in P. fugax as well as other grass weed species.
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Affiliation(s)
- Jiajia Yang
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Minghao Jiang
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Siwei Jia
- School of Agronomy, Anhui Agricultural University, Hefei, China
| | - Min Liao
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Haiqun Cao
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Ning Zhao
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
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18
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Zhao N, Jiang M, Li Q, Gao Q, Zhang J, Liao M, Cao H. Cyhalofop-butyl resistance conferred by a novel Trp-2027-Leu mutation of acetyl-CoA carboxylase and enhanced metabolism in Leptochloa chinensis. PEST MANAGEMENT SCIENCE 2022; 78:1176-1186. [PMID: 34822218 DOI: 10.1002/ps.6734] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/21/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Chinese sprangletop (Leptochloa chinensis (L.) Nees) is an invasive grass weed severely infesting rice fields across China. In October 2020, a suspected resistant Leptochloa chinensis population HFFD3 that survived the acetyl-CoA carboxylase (ACCase)-inhibiting herbicide cyhalofop-butyl applied at its field-recommended rate was collected from a rice field in Feidong County, Anhui Province, China. This study aimed to determine the resistance profile of HFFD3 to ACCase inhibitors and to investigate its mechanisms of resistance to cyhalofop-butyl. RESULTS Single-dose testing confirmed that HFFD3 had evolved resistance to cyhalofop-butyl. Two loci encoding plastidic ACCase were each amplified from the susceptible (S) and resistant (R, HFFD3) individual plants. Target gene sequencing and derived cleaved amplified polymorphic sequence assay revealed all the R plants carried a Trp-2027-Leu substitution in their ACCase1,2 copies. Dose-response bioassays revealed that HFFD3 was highly resistant to cyhalofop-butyl and exhibited cross-resistance to metamifop, fenoxaprop-P-ethyl, quizalofop-P-ethyl, and clethodim. Pre-treatment with piperonyl butoxide and 4-chloro-7-nitrobenzoxadiazole considerably reversed the resistance of the R plants to cyhalofop-butyl, by 23% and 43%, respectively. Liquid chromatography-tandem mass spectrometry analysis suggested the metabolic rates of cyhalofop-butyl were significantly faster in the R than in the S plants. CONCLUSION This study confirmed the first case of an arable weed species featuring cross-resistance to ACCase-inhibiting herbicides due to a novel Trp-2027-Leu mutation of ACCase. Target gene mutation and cytochrome P450s- and glutathione-S-transferases-involved enhanced metabolism may have simultaneously participated in the resistance of HFFD3 population to cyhalofop-butyl.
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Affiliation(s)
- Ning Zhao
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Minghao Jiang
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Qi Li
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Quan Gao
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Jingxu Zhang
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Min Liao
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Haiqun Cao
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
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19
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Santin A, Russo MT, Ferrante MI, Balzano S, Orefice I, Sardo A. Highly Valuable Polyunsaturated Fatty Acids from Microalgae: Strategies to Improve Their Yields and Their Potential Exploitation in Aquaculture. Molecules 2021; 26:7697. [PMID: 34946780 PMCID: PMC8707597 DOI: 10.3390/molecules26247697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022] Open
Abstract
Microalgae have a great potential for the production of healthy food and feed supplements. Their ability to convert carbon into high-value compounds and to be cultured in large scale without interfering with crop cultivation makes these photosynthetic microorganisms promising for the sustainable production of lipids. In particular, microalgae represent an alternative source of polyunsaturated fatty acids (PUFAs), whose consumption is related to various health benefits for humans and animals. In recent years, several strategies to improve PUFAs' production in microalgae have been investigated. Such strategies include selecting the best performing species and strains and the optimization of culturing conditions, with special emphasis on the different cultivation systems and the effect of different abiotic factors on PUFAs' accumulation in microalgae. Moreover, developments and results obtained through the most modern genetic and metabolic engineering techniques are described, focusing on the strategies that lead to an increased lipid production or an altered PUFAs' profile. Additionally, we provide an overview of biotechnological applications of PUFAs derived from microalgae as safe and sustainable organisms, such as aquafeed and food ingredients, and of the main techniques (and their related issues) for PUFAs' extraction and purification from microalgal biomass.
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Affiliation(s)
- Anna Santin
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy; (A.S.); (M.T.R.); (S.B.); (I.O.)
| | - Monia Teresa Russo
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy; (A.S.); (M.T.R.); (S.B.); (I.O.)
| | - Maria Immacolata Ferrante
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy; (A.S.); (M.T.R.); (S.B.); (I.O.)
| | - Sergio Balzano
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy; (A.S.); (M.T.R.); (S.B.); (I.O.)
- Department of Marine Microbiology and Biogeochemistry, Netherland Institute for Sea Research, Landsdiep 4, 1793 AB Texel, The Netherlands
| | - Ida Orefice
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy; (A.S.); (M.T.R.); (S.B.); (I.O.)
| | - Angela Sardo
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy; (A.S.); (M.T.R.); (S.B.); (I.O.)
- Istituto di Scienze Applicate e Sistemi Intelligenti “Eduardo Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli, Italy
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20
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Kaundun SS, Downes J, Jackson LV, Hutchings SJ, Mcindoe E. Impact of a Novel W2027L Mutation and Non-Target Site Resistance on Acetyl-CoA Carboxylase-Inhibiting Herbicides in a French Lolium multiflorum Population. Genes (Basel) 2021; 12:genes12111838. [PMID: 34828444 PMCID: PMC8620607 DOI: 10.3390/genes12111838] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/18/2021] [Accepted: 11/18/2021] [Indexed: 11/24/2022] Open
Abstract
Herbicides that inhibit acetyl-CoA carboxylase (ACCase) are among the few remaining options for the post-emergence control of Lolium species in small grain cereal crops. Here, we determined the mechanism of resistance to ACCase herbicides in a Lolium multiflorum population (HGR) from France. A combined biological and molecular approach detected a novel W2027L ACCase mutation that affects aryloxyphenoxypropionate (FOP) but not cyclohexanedione (DIM) or phenylpyraxoline (DEN) subclasses of ACCase herbicides. Both the wild-type tryptophan and mutant leucine 2027-ACCase alleles could be positively detected in a single DNA-based-derived polymorphic amplified cleaved sequence (dPACS) assay that contained the targeted PCR product and a cocktail of two discriminating restriction enzymes. Additionally, we identified three well-characterised I1781L, I2041T, and D2078G ACCase target site resistance mutations as well as non-target site resistance in HGR. The non-target site component endowed high levels of resistance to FOP herbicides whilst partially impacting on the efficacy of pinoxaden and cycloxydim. This study adequately assessed the contribution of the W2027L mutation and non-target site mechanism in conferring resistance to ACCase herbicides in HGR. It also highlights the versatility and robustness of the dPACS method to simultaneously identify different resistance-causing alleles at a single ACCase codon.
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21
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Tan Y, Li L, Liu H, Yu J, Wang Q, Lin Q. Chinese Medicine Leptochloa chinensis Inhibits the Malignant Behaviors of Renal Cell Carcinoma 786-O Cells by Regulating the mTOR Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2021; 2021:5122380. [PMID: 34675984 PMCID: PMC8526199 DOI: 10.1155/2021/5122380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 09/23/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Renal cell carcinoma (RCC) is a common malignant tumor of the urinary system that seriously threatens human life and health. This study aims to explore the role of the traditional Chinese medicine Leptochloa chinensis in the pathogenesis of RCC. Meanwhile, this study also revealed the molecular biological mechanism of its antitumor activity. METHODS Human RCC 786-O cells were cultured in the RPMI-1640 medium, which contains different concentrations of Leptochloa chinensis (1,000, 3,000, and 9,000 μg/ml). MTT and flow cytometry assays were used to detect the viability of 786-O cells. Transwell and wound healing assays were used to detect cell metastasis. The protein expression was observed by western blot analysis. RESULTS Leptochloa can inhibit cell proliferation and induce apoptosis in RCC 786-O cells. In addition, Leptochloa can weaken the migration and invasion of 786-O cells. More importantly, Leptochloa can block the mTOR pathway by inhibiting the protein expression of p-mTOR. Moreover, the high concentration of Leptochloa chinensis has a better inhibitory effect on 786-O cells. CONCLUSION The traditional Chinese medicine Leptochloa chinensis inhibits the viability and metastasis of 786-O cells by blocking the mTOR pathway.
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Affiliation(s)
- Yongshun Tan
- Department of Nephrology, Jinan City People's Hospital, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan 271199, Shandong Province, China
| | - Lingyun Li
- Department of Internal Medicine, Laishan Branch Hospital of Yantai Yuhuangding Hospital, Yantai, 264003, Shandong Province, China
| | - Hongyue Liu
- Disinfection Supply Center, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, 266000, Shandong Province, China
| | - Jiadong Yu
- Personnel Section, Zhangqiu District People's Hospital, Jinan, 250200, Shandong Province, China
| | - Qijun Wang
- Department of Otorhinolaryngology, Zhangqiu District People's Hospital, Jinan 250200, Shandong Province, China
| | - Qiuju Lin
- Department of Oncology (II), Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, 266000, Shandong Province, China
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22
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Chen K, Peng Y, Zhang L, Wang L, Mao D, Zhao Z, Bai L, Wang L. Whole transcriptome analysis resulted in the identification of Chinese sprangletop (Leptochloa chinensis) genes involved in cyhalofop-butyl tolerance. BMC Genomics 2021; 22:521. [PMID: 34238252 PMCID: PMC8268407 DOI: 10.1186/s12864-021-07856-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/25/2021] [Indexed: 12/05/2022] Open
Abstract
Background Chinese sprangletop [Leptochloa chinensis (L.) Nees] is an annual malignant weed, which can often be found in paddy fields. Cyhalofop-butyl is a specialized herbicide which is utilized to control L. chinensis. However, in many areas, L. chinensis has become tolerant to this key herbicide due to its continuous long-term use. Results In this study, we utilized a tolerant (LC18002) and a sensitive (LC17041) L. chinensis populations previously identified in our laboratory, which were divided into four different groups. We then employed whole transcriptome analysis to identify candidate genes which may be involved in cyhalofop-butyl tolerance. This analysis resulted in the identification of six possible candidate genes, including three cytochrome P450 genes and three ATP-binding cassette transporter genes. We then carried out a phylogenetic analysis to identify homologs of the differentially expressed cytochrome P450 genes. This phylogenetic analysis indicated that all genes have close homologs in other species, some of which have been implicated in non-target site resistance (NTSR). Conclusions This study is the first to use whole transcriptome analysis to identify herbicide non-target resistance genes in L. chinensis. The differentially expressed genes represent promising targets for better understanding herbicide tolerance in L. chinensis. The six genes belonging to classes already associated in herbicide tolerance may play important roles in the metabolic resistance of L. chinensis to cyhalofop-butyl, although the exact mechanisms require further study. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07856-z.
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Affiliation(s)
- Ke Chen
- Longping Branch, Graduate School of Hunan University, Changsha, People's Republic of China.,Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China.,Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China
| | - Yajun Peng
- Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China
| | - Liang Zhang
- Longping Branch, Graduate School of Hunan University, Changsha, People's Republic of China.,Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China.,Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China
| | - Long Wang
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, 410082, Changsha, People's Republic of China
| | - Donghai Mao
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, 410125, Changsha, People's Republic of China
| | - Zhenghong Zhao
- Longping Branch, Graduate School of Hunan University, Changsha, People's Republic of China
| | - Lianyang Bai
- Longping Branch, Graduate School of Hunan University, Changsha, People's Republic of China. .,Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China. .,Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China.
| | - Lifeng Wang
- Longping Branch, Graduate School of Hunan University, Changsha, People's Republic of China. .,Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China. .,Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, People's Republic of China.
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23
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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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24
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Zhang Y, Chen L, Song W, Cang T, Xu M, Zhou G, Wu C. Reference genes for the study of herbicide stress responses in Leptochloa chinensis (L.) Nees and estimation of ACCase expression in cyhalofop-butyl resistant populations. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 171:104739. [PMID: 33357561 DOI: 10.1016/j.pestbp.2020.104739] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 10/23/2020] [Accepted: 10/25/2020] [Indexed: 06/12/2023]
Abstract
Cyhalofop-butyl resistance in Leptochloa chinensis (L.) Nees is a threat to rice production. Qualitative changes to the acetyl-CoA carboxylase gene (ACCase) have been reported to induce cyhalofop-butyl resistance in some weed species, but the role of ACCase in cyhalofop-butyl resistance through quantitative changes remains uncertain. The accurate assessment of transcriptional changes in the functional genes associated with herbicide resistance in L. chinensis is challenging owing to the lack of available reference genes for expression normalization. Here, we selected nine candidate reference genes in L. chinensis and assessed their transcription stability in populations susceptible and resistant to cyhalofop-butyl. Transcription stability was compared under conditions of herbicide stress and control conditions using BestKeeper, NormFinder, and geNorm. Elongation factor 1 alpha, eukaryotic initiation factor 4A, and cap-binding protein CBP20 were the most stable reference genes under cyhalofop-butyl treatment. Transcription levels of ACCase were evaluated in seven resistant populations, one of which showed higher transcription than the susceptible population after 24 h cyhalofop-butyl treatment. However, the slight up-regulation of ACCase (approximately 2.0-fold) is unlikely to be responsible for the high resistance levels in these populations of L. chinensis.
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Affiliation(s)
- Yi Zhang
- State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Liping Chen
- State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wen Song
- State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Tao Cang
- State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Mingfei Xu
- State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Guojun Zhou
- Shaoxing Academy of Agricultural Sciences, Shaoxing 312003, China
| | - Changxing Wu
- State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
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25
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Deng W, Yang Q, Chen Y, Yang M, Xia Z, Zhu J, Chen Y, Cai J, Yuan S. Cyhalofop-butyl and Glyphosate Multiple-Herbicide Resistance Evolved in an Eleusine indica Population Collected in Chinese Direct-Seeding Rice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:2623-2630. [PMID: 32058714 DOI: 10.1021/acs.jafc.9b07342] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Eleusine indica is a typical xerophytic weed species with a cosmopolitan distribution. It is invasive and highly adaptable to diverse habitats and crops. Due to rice cropping-pattern changes, E indica has become one of the main dominant grass weeds infecting direct-seeding paddy fields. A Chinese E. indica population has evolved multiple-herbicide resistance to cyhalofop-butyl and glyphosate. In this study, the multiple-resistance profile of E. indica to these two different types of herbicides and their resistance mechanisms were investigated. Whole-plant dose-response assays indicated that the multiple-herbicide-resistant (MHR) population exhibited 10.8-fold resistance to cyhalofop-butyl and 3.1-fold resistance to glyphosate compared with the susceptible (S) population. ACCase sequencing revealed that the Asp-2078-Gly mutation was strongly associated with E. indica resistance to cyhalofop-butyl. The MHR plants accumulated less shikimic acid than S plants at 4, 6, and 8 days after glyphosate treatment. In addition, no amino acid substitution in the EPSPS gene was found in MHR plants. Further analysis revealed that the relative expression level of EPSPS in MHR plants was 6-10-fold higher than that in S plants following glyphosate treatment, indicating that EPSPS overexpression may contribute to the glyphosate resistance. Furthermore, the effectiveness of nine post-emergence herbicides against E. indica were evaluated, and one PPO inhibitor pyraclonil was identified as highly effective in controlling the S and MHR E. indica populations.
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Affiliation(s)
- Wei Deng
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
| | - Qian Yang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yongrui Chen
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
| | - Mengting Yang
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
| | - Zhiming Xia
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
| | - Jin Zhu
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
| | - Yueyang Chen
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
| | - Jingxuan Cai
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
| | - Shuzhong Yuan
- College of Horticulture and Plant Protection, Yangzhou University, No. 88 of Da Xue Nan Road, Hanjiang District, Yangzhou 225009, China
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