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Feng T, Wang L, Lei T, Wu B, Wu L, Wang J, Sun W, Li F, Li J, Ma H. A natural glutathione S-transferase gene GSTU23 confers metabolic resistance to metamifop in Echinochloa crus-galli. Int J Biol Macromol 2024; 277:134078. [PMID: 39038575 DOI: 10.1016/j.ijbiomac.2024.134078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/30/2024] [Accepted: 07/19/2024] [Indexed: 07/24/2024]
Abstract
Herbicides are essential for farmers to control weed. However, prolonged use of herbicides has caused the development of herbicide resistance in weeds. Here, the resistant Echinochloa crus-galli (RL5) was obtained by continuous treatment with metamifop for five generations in paddy fields. RL5 plants showed a 13.7-fold higher resistance to metamifop compared to susceptible E. crus-galli (SL5) plants. Pre-treatment with GST inhibitor (NBD-Cl) significantly increased the susceptibility of RL5 plants to metamifop. Faster metamifop metabolism and higher GST activity in RL5 plants than in SL5 plants were also confirmed, highlighting the role of GST in metabolic resistance. RNA-Seq analysis identified EcGSTU23 as a candidate gene, and this gene was up-regulated in RL5 and field-resistant E. crus-galli plants. Furthermore, the EcGSTU23 gene was overexpressed in the transgenic EcGSTU23-Maize, and the EcGSTU23-Maize showed resistance to metamifop. In vitro metabolic studies also revealed that the purified EcGSTU23 displayed catalytic activity in glutathione (GSH) conjugation, and metamifop was rapidly metabolized in the co-incubation system containing EcGSTU23 protein. These results provide direct experimental evidence of EcGSTU23's involvement in the metabolic resistance of E. crus-galli to metamifop. Understanding the resistance mechanism can help in devising effective strategies to combat herbicide resistance and breeding of genetically modified herbicide resistant crops.
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Affiliation(s)
- Tangqi Feng
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Lei Wang
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Tianhong Lei
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Biao Wu
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Lan Wu
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Jian Wang
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Wenjing Sun
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Fengfeng Li
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Jianhong Li
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Hongju Ma
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Wuhan 430070, Hubei, China; College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China.
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Li HY, Guo Y, Jin BY, Yang XF, Kong CH. Phytochemical Cue for the Fitness Costs of Herbicide-Resistant Weeds. PLANTS (BASEL, SWITZERLAND) 2023; 12:3158. [PMID: 37687404 PMCID: PMC10490342 DOI: 10.3390/plants12173158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 08/28/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023]
Abstract
Despite increasing knowledge of the fitness costs of viability and fecundity involved in the herbicide-resistant weeds, relatively little is known about the linkage between herbicide resistance costs and phytochemical cues in weed species and biotypes. This study demonstrated relative fitness and phytochemical responses in six herbicide-resistant weeds and their susceptible counterparts. There were significant differences in the parameters of viability (growth and photosynthesis), fecundity fitness (flowering and seed biomass) and a ubiquitous phytochemical (-)-loliolide levels between herbicide-resistant weeds and their susceptible counterparts. Fitness costs occurred in herbicide-resistant Digitaria sanguinalis and Leptochloa chinensis but they were not observed in herbicide-resistant Alopecurus japonicas, Eleusine indica, Ammannia arenaria, and Echinochloa crus-galli. Correlation analysis indicated that the morphological characteristics of resistant and susceptible weeds were negatively correlated with (-)-loliolide concentration, but positively correlated with lipid peroxidation malondialdehyde and total phenol contents. Principal component analysis showed that the lower the (-)-loliolide concentration, the stronger the adaptability in E. crus-galli and E. indica. Therefore, not all herbicide-resistant weeds have fitness costs, but the findings showed several examples of resistance leading to improved fitness even in the absence of herbicides. In particular, (-)-loliolide may act as a phytochemical cue to explain the fitness cost of herbicide-resistant weeds by regulating vitality and fecundity.
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Affiliation(s)
- Hong-Yu Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
| | - Yan Guo
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
| | - Bo-Yan Jin
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
| | - Xue-Fang Yang
- College of Life Science, Hebei University, Baoding 071000, China
| | - Chui-Hua Kong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
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Hu X, Liu R, Mao H, Xu Y, Chen B, Li Y, Yang X. Inter-Species Investigation of Biological Traits among Eight Echinochloa Species. PLANTS (BASEL, SWITZERLAND) 2023; 12:3085. [PMID: 37687331 PMCID: PMC10489896 DOI: 10.3390/plants12173085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/15/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
Due to the diversity of Echinochloa species and the limited understanding of their damage processes in rice fields, clarifying the biological properties of distinct species could help create a foundation for effective control techniques. Pot experiments and field competition trials were conducted using eight Echinochloa species to elucidate their biological differences and assess their varying levels of negative impact on rice. The survey outcomes showed that E. oryzoides had the highest 1000-grain weight (3.12 g) while E. colona had the lowest (0.90 g). The largest grain number per spikelet found in E. glabrescens (940) was 3.4 times greater than that in E. oryzoides (277). Different species responded variably to changes in temperature and photoperiod. Except for E. caudate, all Echinochloa species exhibited a shortened growth period with the delay of the sowing date. Under field competitive conditions, all Echinochloa species exhibited significantly greater net photosynthetic rates than rice, with E. crusgalli exhibiting the highest photosynthetic capacity. Moreover, in this resource-limited setting, barnyardgrass species had a decrease in tiller formation and panicle initiation but a significant increase in plant height. These findings contribute valuable insights into the biological characteristics of barnyardgrass populations and provide guidance for implementing effective control measures in rice fields.
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Affiliation(s)
- Xuli Hu
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing 210014, China
- Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Runqiang Liu
- Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Honghao Mao
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing 210014, China
| | - Yong Xu
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing 210014, China
| | - Bin Chen
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing 210014, China
| | - Yongfeng Li
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing 210014, China
| | - Xia Yang
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing 210014, China
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Tong Y, Li YF, Yi SC, Fan DL, Qiu ZX, Wei CY, Huang MG, Zeng DQ, Tang WW. High aquaporin expression correlates with increased translocation of quinclorac from shoots to roots in resistant Echinochloa crus-galli var. zelayensis. PEST MANAGEMENT SCIENCE 2023; 79:163-172. [PMID: 36111449 DOI: 10.1002/ps.7185] [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: 06/03/2022] [Revised: 08/19/2022] [Accepted: 09/12/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Echinochloa crus-galli var. zelayensis is a troublesome weed in rice fields and can be controlled by using quinclorac. However, over-reliance on quinclorac has resulted in resistant (R) barnyardgrass, which differs significantly in its ability to transport quinclorac compared to susceptible (S) barnyardgrass. This study aimed to investigate the underlying mechanisms for this different translocation between R and S barnyardgrass. RESULTS Larger amount of quinclorac was transferred from shoots to roots in R compared to S barnyardgrass. After 1 day of quinclorac [300 g active ingredient (a.i.) ha-1 ] foliar treatment, its content in shoots of R was 81.92% of that in S barnyardgrass; correspondingly, in roots of R was 1.17 fold of that in S barnyardgrass. RNA-sequencing and quantitative real-time polymerase chain reaction (qRT-PCR) confirmed the expression levels of PIPs belonging to aquaporins (AQPs) in R were higher than in S barnyardgrass, with or without quinclorac treatment. With co-application of quinclorac and AQPs inhibitors [mercury(II) chloride (HgCl2 )] treatment, even though the expression levels of PIPs and the transport rates of quinclorac were both suppressed in R and S barnyardgrass, this process was less pronounced in R than in S barnyardgrass. CONCLUSION This report provides clear evidence that higher PIPs expression results in rapid quinclorac translocation from shoots to roots and reduces the quinclorac accumulation in the shoot meristems in R barnyardgrass, thus reducing the control efficacy of quinclorac. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Yao Tong
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
| | - Yong-Feng Li
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Sciences, Nanjing, P. R. China
| | - Shan-Chi Yi
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
| | - Dan-Li Fan
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
| | - Zhuo-Xun Qiu
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
| | - Chen-Yang Wei
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
| | - Meng-Ge Huang
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
| | - Dong-Qiang Zeng
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
| | - Wen-Wei Tang
- Guangxi Key Laboratory of Agro-Environment and Agric-Product Safety, College of Agriculture, Guangxi University, Nanning, P. R. China
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Zhao J, Tan S, Li H, Wang Y, Yao T, Liu L, Liu K. Multi-walled Carbon Nanotubes Remediate the Phytotoxicity of Quinclorac to Tomato. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 109:477-483. [PMID: 35849168 DOI: 10.1007/s00128-022-03582-8] [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: 03/08/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
In order to remediate the phytotoxicity of quinclorac to tomato by multi-walled carbon nanotubes (MWCNTs), the adsorption of quinclorac to MWCNTs was monitored and the effect of MWCNTs on the phytotoxicity of quinclorac to tomato in soil were studied. The results showed that the Linear equation and Freundlich equation can well fit the adsorption isotherm of quinclorac in the soil containing MWCNTs. The adsorption of quinclorac in soil was significantly enhanced by the addition of MWCNTs; the Kd of soil (1% MWCNTs) was 28.7 times of pure soil. The quinclorac had an obvious inhibitory effect on the growth of tomatoes; serious phytotoxicity was also induced even at the lowest concentration of 0.025 mg/kg. With the MWCNTs content in soil increased to 0.5% and 1%, the phytotoxicity of quinclorac to tomatoes decreased significantly, and the height and fresh weight of tomatoes were even higher than those of the control group, indicating that MWCNTs can promote the growth of tomato. These results provide a reference for resolving the problem of phytotoxicity induced by residual herbicides in farmland.
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Affiliation(s)
- Jingyu Zhao
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Shuo Tan
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Hui Li
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, 27695, USA
| | - Yao Wang
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Ting Yao
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Lejun Liu
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China
| | - Kailin Liu
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China.
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Wu D, Shen E, Jiang B, Feng Y, Tang W, Lao S, Jia L, Lin HY, Xie L, Weng X, Dong C, Qian Q, Lin F, Xu H, Lu H, Cutti L, Chen H, Deng S, Guo L, Chuah TS, Song BK, Scarabel L, Qiu J, Zhu QH, Yu Q, Timko MP, Yamaguchi H, Merotto A, Qiu Y, Olsen KM, Fan L, Ye CY. Genomic insights into the evolution of Echinochloa species as weed and orphan crop. Nat Commun 2022; 13:689. [PMID: 35115514 PMCID: PMC8814039 DOI: 10.1038/s41467-022-28359-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 01/20/2022] [Indexed: 12/20/2022] Open
Abstract
As one of the great survivors of the plant kingdom, barnyard grasses (Echinochloa spp.) are the most noxious and common weeds in paddy ecosystems. Meanwhile, at least two Echinochloa species have been domesticated and cultivated as millets. In order to better understand the genomic forces driving the evolution of Echinochloa species toward weed and crop characteristics, we assemble genomes of three Echinochloa species (allohexaploid E. crus-galli and E. colona, and allotetraploid E. oryzicola) and re-sequence 737 accessions of barnyard grasses and millets from 16 rice-producing countries. Phylogenomic and comparative genomic analyses reveal the complex and reticulate evolution in the speciation of Echinochloa polyploids and provide evidence of constrained disease-related gene copy numbers in Echinochloa. A population-level investigation uncovers deep population differentiation for local adaptation, multiple target-site herbicide resistance mutations of barnyard grasses, and limited domestication of barnyard millets. Our results provide genomic insights into the dual roles of Echinochloa species as weeds and crops as well as essential resources for studying plant polyploidization, adaptation, precision weed control and millet improvements.
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Affiliation(s)
- Dongya Wu
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Enhui Shen
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
- Zhejiang University Zhongyuan Institute, Zhengzhou, 450000, China
| | - Bowen Jiang
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Yu Feng
- Institute of Ecology, Zhejiang University, Hangzhou, 310058, China
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Wei Tang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Sangting Lao
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Lei Jia
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Han-Yang Lin
- Institute of Ecology, Zhejiang University, Hangzhou, 310058, China
| | - Lingjuan Xie
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Xifang Weng
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Chenfeng Dong
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Qinghong Qian
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Feng Lin
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Haiming Xu
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
| | - Huabing Lu
- Institute of Maize and Upland Grain, Zhejiang Academy of Agricultural Sciences, Dongyang, 322105, China
| | - Luan Cutti
- Department of Crop Sciences, Agricultural School, Federal University of Rio Grande do Sul, Porto Alegre, RS, 91540-000, Brazil
| | - Huajun Chen
- College of Computer Science and Technology, Zhejiang University, Hangzhou, 310058, China
| | - Shuiguang Deng
- College of Computer Science and Technology, Zhejiang University, Hangzhou, 310058, China
| | - Longbiao Guo
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China
| | - Tse-Seng Chuah
- Faculty of Plantation and Agrotechnology, Universiti Teknologi MARA, 02600, Arau, Perlis, Malaysia
| | - Beng-Kah Song
- School of Science, Monash University Malaysia, 46150, Bandar Sunway, Selangor, Malaysia
| | - Laura Scarabel
- Istituto per la Protezione Sostenibile delle Piante (IPSP), CNR, Viale dell'Università, 16, 35020, Legnaro (PD), Italy
| | - Jie Qiu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200235, China
| | - Qian-Hao Zhu
- CSIRO Agriculture and Food, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Qin Yu
- Australian Herbicide Resistance Initiative, School of Agriculture and Environment, University of Western Australia, Crawley, WA, 6009, Australia
| | - Michael P Timko
- Department of Biology, University of Virginia, Charlottesville, VA, 22904, USA
| | | | - Aldo Merotto
- Department of Crop Sciences, Agricultural School, Federal University of Rio Grande do Sul, Porto Alegre, RS, 91540-000, Brazil
| | - Yingxiong Qiu
- Institute of Ecology, Zhejiang University, Hangzhou, 310058, China
| | - Kenneth M Olsen
- Department of Biology, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Longjiang Fan
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China
- Zhejiang University Zhongyuan Institute, Zhengzhou, 450000, China
| | - Chu-Yu Ye
- Institute of Crop Science & Institute of Bioinformatics, Zhejiang University, Hangzhou, 310058, China.
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Hwang JI, Norsworthy JK, González-Torralva F, Piveta LB, Priess GL, Barber LT, Butts TR. Absorption, translocation, and metabolism of florpyrauxifen-benzyl and cyhalofop-butyl in cyhalofop-butyl-resistant barnyardgrass [Echinochloa crus-galli (L.) P. Beauv.]. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 180:104999. [PMID: 34955183 DOI: 10.1016/j.pestbp.2021.104999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/08/2021] [Accepted: 11/18/2021] [Indexed: 06/14/2023]
Abstract
Dose-response experiments were conducted to assess the sensitivity of one susceptible and three putative resistant (R1, R2, and R3) barnyardgrass [Echinochloa crus-galli (L.) P. Beauv.] biotypes to florpyrauxifen-benzyl and cyhalofop-butyl alone and as a formulated premix. Subsequently, potential resistance mechanisms of the barnyardgrass were evaluated. Based on biomass reduction results, resistant/susceptible ratios were calculated for R1 (7.0-50), R2 (7.0-150), and R3 (18-214) biotypes. Absorption and translocation of [14C]-florpyrauxifen-benzyl decreased in R1 and R3 biotypes, but not for [14C]-cyhalofop-butyl. The metabolism of [14C]-florpyrauxifen-benzyl to [14C]-florpyrauxifen-acid was >2-fold less in resistant biotypes (9-11%) than in the susceptible biotype (23%). Moreover, the production of [14C]-florpyrauxifen-acid in susceptible barnyardgrass (not in the R biotypes) increased 3-fold when florpyrauxifen-benzyl and cyhalofop-butyl were applied in mixture compared to florpyrauxifen-benzyl applied alone. The tested barnyardgrass biotypes had no mutation in the Transport Inhibitor Response1, auxin-signaling F-box, and acetyl coenzyme A carboxylase genes. Although further studies on cyhalofop-butyl resistance with respect to analysis of specific metabolites are needed, our findings in this study demonstrates that the evolution of florpyrauxifen-benzyl resistance in multiple resistant barnyardgrass can be related to non-target-site resistance mechanisms reducing absorption and translocation of the herbicide and causing reduced conversion or rapid degradation of florpyrauxifen-acid.
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Affiliation(s)
- Jeong-In Hwang
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USA.
| | - Jason K Norsworthy
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USA
| | - Fidel González-Torralva
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USA
| | - Leonard B Piveta
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USA
| | - Grant L Priess
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USA
| | - L Tom Barber
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USA
| | - Thomas R Butts
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USA
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8
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Hwang JI, Norsworthy JK, González-Torralva F, Priess GL, Barber LT, Butts TR. Non-target-site resistance mechanism of barnyardgrass [Echinochloa crus-galli (L.) P. Beauv.] to florpyrauxifen-benzyl. PEST MANAGEMENT SCIENCE 2022; 78:287-295. [PMID: 34482604 DOI: 10.1002/ps.6633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/26/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Florpyrauxifen-benzyl (FPB) is an arylpicolinate herbicide (Group IV) for barnyardgrass control in rice. One susceptible (Sus) and three putative FPB-resistant (R1, R2, and R3) barnyardgrass biotypes were selected based on resistant/susceptible (R/S) ratios obtained from dose-response tests and used to investigate the potential resistance mechanisms. RESULTS Based on visual control results, the R/S ratios of barnyardgrass biotypes R1, R2, and R3 were 60-, 33-, and 16-fold greater than the Sus standard, respectively. Sequencing results of TIR1 and AFB genes in the tested barnyardgrass revealed no difference between Sus and R barnyardgrass biotypes. Absorption of [14 C]-FPB in Sus barnyardgrass increased over time and reached 90%, which was >10 percentage points greater than that in R biotypes. The [14 C]-FPB absorption in all R barnyardgrass equilibrated after 48 h. For both Sus and R barnyardgrass, most [14 C]-FPB absorbed was present in the treated leaf (79.8-88.8%), followed by untreated aboveground (9.5-18.6%) and belowground tissues (1.3-2.2%). No differences in translocation were observed. Differences between Sus and R barnyardgrass biotypes were found for FPB metabolism. Production of the active metabolite, florpyrauxifen-acid, was greater in Sus barnyardgrass (21.5-52.1%) than in R barnyardgrass (5.5-34.9%). CONCLUSION In conclusion, reductions in FPB absorption and florpyrauxifen-acid production may contribute to the inability to control barnyardgrass with FPB. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Jeong-In Hwang
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA
| | - Jason K Norsworthy
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA
| | - Fidel González-Torralva
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA
| | - Grant L Priess
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA
| | - L Tom Barber
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA
| | - Thomas R Butts
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA
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