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Hoagland RE, Boyette CD, Stetina KC. Bioherbicidal Activity of Albifimbria verrucaria (Formerly Myrothecium verrucaria) on Glyphosate-Resistant Conyza canadensis. J Fungi (Basel) 2023; 9:773. [PMID: 37504761 PMCID: PMC10381147 DOI: 10.3390/jof9070773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 06/21/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023] Open
Abstract
The effects of the bioherbicidal activity of the fungal phytopathogen, Albifimbria verrucaria (AV), formerly Myrothecium verrucaria, on glyphosate-resistant and -susceptible Conyza canadensis (horseweed) were examined in greenhouse and field studies. Spray applications of mycelial formulations of AV infected both glyphosate-resistant and -susceptible C. canadensis plants at various growth stages. Young plants in the rosette leaf stage of growth were controlled more efficaciously than were older plants that had bolted or that were in the inflorescence stage; nevertheless, severe injury and mortality also occurred in mature plants. The results indicate that this bioherbicidal fungus can infect and control C. canadensis, thereby demonstrating the potential of this fungus as a bioherbicidal agent against this troublesome weed, which has become resistant to various herbicides.
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Affiliation(s)
- Robert E Hoagland
- USDA-ARS, Crop Production Systems Research Unit, Stoneville, MS 38776, USA
| | - C Douglas Boyette
- USDA-ARS, Biological Control of Pests Research Unit, Stoneville, MS 38776, USA
| | - Kenneth C Stetina
- USDA-ARS, Biological Control of Pests Research Unit, Stoneville, MS 38776, USA
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Palma-Bautista C, Vázquez-Garcia JG, López-Valencia G, Domínguez-Valenzuela JA, Barro F, De Prado R. Reduced Glyphosate Movement and Mutation of the EPSPS Gene (Pro106Ser) Endow Resistance in Conyza canadensis Harvested in Mexico. J Agric Food Chem 2023; 71:4477-4487. [PMID: 36892583 DOI: 10.1021/acs.jafc.2c07833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Glyphosate has been the most widely used herbicide for decades providing a unique tool, alone or in mixtures, to control weeds on citrus in Veracruz. Conyza canadensis has developed glyphosate resistance for the first time in Mexico. The level and mechanisms of resistance of four resistant populations Rs (R1, R2, R3, and R4) were studied and compared with that of a susceptible population (S). Resistance factor levels showed two moderately resistant populations (R2 and R3) and two highly resistant populations (R1 and R4). Glyphosate translocation through leaves to roots was ∼2.8 times higher in the S population than in the four R populations. A mutation (Pro106Ser) in the EPSPS2 gene was identified in the R1 and R4 populations. Mutation in the target site associated with reduced translocation is involved in increased glyphosate resistance in the R1 and R4 populations; whereas for the R2 and R3 populations, it was only mediated by reduced translocation. This is the first study of glyphosate resistance in C. canadensis from Mexico in which the resistance mechanisms involved are described in detail and control alternatives are proposed.
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Affiliation(s)
- Candelario Palma-Bautista
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, UCO-CeiA3, Cordoba 14014, Spain
| | - José G Vázquez-Garcia
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, UCO-CeiA3, Cordoba 14014, Spain
| | - Gabriela López-Valencia
- Departamento de Parasitología Agrícola, Universidad Autónoma Chapingo, Texcoco 56230, Estado de México, México
| | | | - Francisco Barro
- Department of Plant Breeding, Institute for Sustainable Agriculture-Spanish National Research Council (IAS-CSIC), Cordoba 14004, Spain
| | - Rafael De Prado
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, UCO-CeiA3, Cordoba 14014, Spain
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Elgamal AM, Ahmed RF, Abd-ElGawad AM, El Gendy AENG, Elshamy AI, Nassar MI. Chemical Profiles, Anticancer, and Anti-Aging Activities of Essential Oils of Pluchea dioscoridis (L.) DC. and Erigeron bonariensis L. Plants (Basel) 2021; 10:plants10040667. [PMID: 33807147 PMCID: PMC8066341 DOI: 10.3390/plants10040667] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/21/2021] [Accepted: 03/24/2021] [Indexed: 01/17/2023]
Abstract
Plants belonging to the Asteraceae family are widely used as traditional medicinal herbs around the world for the treatment of numerous diseases. In this work, the chemical profiles of essential oils (EOs) of the above-ground parts of Pluchea dioscoridis (L.) DC. and Erigeron bonariensis (L.) were studied in addition to their cytotoxic and anti-aging activities. The extracted EOs from the two plants via hydrodistillation were analyzed by gas chromatography-mass spectroscopy (GC-MS). GC-MS of EO of P. dioscoridis revealed the identification of 29 compounds representing 96.91% of the total oil. While 35 compounds were characterized from EO of E. bonariensis representing 98.21%. The terpenoids were found the main constituents of both plants with a relative concentration of 93.59% and 97.66%, respectively, including mainly sesquiterpenes (93.40% and 81.06%). α-Maaliene (18.84%), berkheyaradulen (13.99%), dehydro-cyclolongifolene oxide (10.35%), aromadendrene oxide-2 (8.81%), β-muurolene (8.09%), and α-eudesmol (6.79%), represented the preponderance compounds of EO of P. dioscoridis. While, trans-α-farnesene (25.03%), O-ocimene (12.58%), isolongifolene-5-ol (5.53%), α-maaliene (6.64%), berkheyaradulen (4.82%), and α-muurolene (3.99%), represented the major compounds EO of E. bonariensis. A comparative study of our results with the previously described data was constructed based upon principal component analysis (PCA) and agglomerative hierarchical clustering (AHC), where the results revealed a substantial variation of the present studied species than other reported ecospecies. EO of P. dioscoridis exhibited significant cytotoxicity against the two cancer cells, MCF-7 and A-549 with IC50 of 37.3 and 22.3 μM, respectively. While the EO of the E. bonariensis showed strong cytotoxicity against HepG2 with IC50 of 25.6 μM. The EOs of P. dioscoridis, E. bonariensis, and their mixture (1:1) exhibited significant inhibitory activity of the collagenase, elastase, hyaluronidase, and tyrosinase comparing with epigallocatechin gallate (EGCG) as a reference. The results of anti-aging showed that the activity of mixture (1:1) > P. dioscoridis > E. bonariensis against the four enzymes.
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Affiliation(s)
- Abdelbaset M. Elgamal
- Department of Chemistry of Microbial and Natural Products, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt
- Correspondence: (A.M.E.); (A.I.E.); Tel.: +20-100-155-8689 (A.M.E.); +20-100-552-5108 (A.I.E.)
| | - Rania F. Ahmed
- Chemistry of Natural Compounds Department, National Research Center, 33 El Bohouth St., Dokki, Giza 12622, Egypt; (R.F.A.); (M.I.N.)
| | - Ahmed M. Abd-ElGawad
- Department of Botany, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;
| | - Abd El-Nasser G. El Gendy
- Medicinal and Aromatic Plants Research Department, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt;
| | - Abdelsamed I. Elshamy
- Chemistry of Natural Compounds Department, National Research Center, 33 El Bohouth St., Dokki, Giza 12622, Egypt; (R.F.A.); (M.I.N.)
- Correspondence: (A.M.E.); (A.I.E.); Tel.: +20-100-155-8689 (A.M.E.); +20-100-552-5108 (A.I.E.)
| | - Mahmoud I. Nassar
- Chemistry of Natural Compounds Department, National Research Center, 33 El Bohouth St., Dokki, Giza 12622, Egypt; (R.F.A.); (M.I.N.)
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Palma-Bautista C, Vazquez-Garcia JG, Travlos I, Tataridas A, Kanatas P, Domínguez-Valenzuela JA, De Prado R. Effect of Adjuvant on Glyphosate Effectiveness, Retention, Absorption and Translocation in Lolium rigidum and Conyza canadensis. Plants (Basel) 2020; 9:plants9030297. [PMID: 32121525 PMCID: PMC7154921 DOI: 10.3390/plants9030297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/10/2020] [Accepted: 02/24/2020] [Indexed: 05/24/2023]
Abstract
Glyphosate retention, absorption and translocation with and without adjuvant were examined in Lolium rigidum and Conyza canadensis in greenhouse and laboratory settings to develop an understanding of the influence of the selected adjuvant on glyphosate activity. Tests on whole plants show that the dose of herbicide needed to reduce dry weight by 50% (GR50) or plant survival (LD50) decreases by mixing glyphosate and adjuvant to 22%-24% and 42%-44% for both populations of L. rigidum and C. canadensis, respectively. This improvement in efficacy could be attributed to the higher herbicide retention and lower contact angle of the glyphosate + adjuvant drops on the leaf surface compared to the glyphosate solution alone. Plants of both species treated with 14C-glyphosate + adjuvant absorbed more glyphosate compared to non-adjuvant addition. Furthermore, the movement of the herbicide through the plant was faster and greater with the adjuvant. Our results reveal that the use of adjuvants improves the effectiveness of glyphosate in two of the most important weeds in agricultural crops in Mediterranean countries.
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Affiliation(s)
- Candelario Palma-Bautista
- Department of Agricultural Chemistry and Edaphology, University of Cordoba, 14071 Cordoba, Spain; (C.P.-B.); (J.G.V.-G.)
| | - Jose G. Vazquez-Garcia
- Department of Agricultural Chemistry and Edaphology, University of Cordoba, 14071 Cordoba, Spain; (C.P.-B.); (J.G.V.-G.)
| | - Ilias Travlos
- Department of Crop Science, Laboratory of Agronomy, Agricultural University of Athens, 75 Iera Odos Street, 11855 Athens, Greece; (I.T.); (A.T.)
| | - Alexandros Tataridas
- Department of Crop Science, Laboratory of Agronomy, Agricultural University of Athens, 75 Iera Odos Street, 11855 Athens, Greece; (I.T.); (A.T.)
| | - Panagiotis Kanatas
- Agricultural Cooperative of Mesolonghi-Nafpaktia, 30200 Mesolonghi, Greece;
| | | | - Rafael De Prado
- Department of Agricultural Chemistry and Edaphology, University of Cordoba, 14071 Cordoba, Spain; (C.P.-B.); (J.G.V.-G.)
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Beres ZT, Owen MDK, Snow AA. No evidence for early fitness penalty in glyphosate-resistant biotypes of Conyza canadensis: Common garden experiments in the absence of glyphosate. Ecol Evol 2019; 9:13678-13689. [PMID: 31938474 PMCID: PMC6953693 DOI: 10.1002/ece3.5741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/25/2019] [Accepted: 07/28/2019] [Indexed: 11/05/2022] Open
Abstract
Strong selection from herbicides has led to the rapid evolution of herbicide-resistant weeds, greatly complicating weed management efforts worldwide. In particular, overreliance on glyphosate, the active ingredient in RoundUp®, has spurred the evolution of resistance to this herbicide in ≥40 species. Previously, we reported that Conyza canadensis (horseweed) has evolved extreme resistance to glyphosate, surviving at 40× the original 1× effective dosage. Here, we tested for underlying fitness effects of glyphosate resistance to better understand whether resistance could persist indefinitely in this self-pollinating, annual weed. We sampled seeds from a single maternal plant ("biotype") at each of 26 horseweed populations in Iowa, representing nine susceptible biotypes (S), eight with low-level resistance (LR), and nine with extreme resistance (ER). In 2016 and 2017, we compared early growth rates and bolting dates of these biotypes in common garden experiments at two sites near Ames, Iowa. Nested ANOVAs showed that, as a group, ER biotypes attained similar or larger rosette size after 6 weeks compared to S or LR biotypes, which were similar to each other in size. Also, ER biotypes bolted 1-2 weeks earlier than S or LR biotypes. These fitness-related traits also varied among biotypes within the same resistance category, and time to bolting was inversely correlated with rosette size across all biotypes. Disease symptoms affected 40% of all plants in 2016 and 78% in 2017, so we did not attempt to measure lifetime fecundity. In both years, the frequency of disease symptoms was greatest in S biotypes and similar in LR versus ER biotypes. Overall, our findings indicate there are no early growth penalty and possibly no lifetime fitness penalty associated with glyphosate resistance, including extremely strong resistance. We conclude that glyphosate resistance is likely to persist in horseweed populations, with or without continued selection pressure from exposure to glyphosate.
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Affiliation(s)
- Zachery T. Beres
- Department of Evolution, Ecology, and Organismal BiologyOhio State UniversityColumbusOHUSA
| | | | - Allison A. Snow
- Department of Evolution, Ecology, and Organismal BiologyOhio State UniversityColumbusOHUSA
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Li Z, Kuang W, Liu Y, Peng D, Bai L. Proteomic Analysis of Horseweed (Conyza canadensis) Subjected to Caprylic Acid Stress. Proteomics 2019; 19:e1800294. [PMID: 30865362 DOI: 10.1002/pmic.201800294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 02/02/2019] [Indexed: 11/08/2022]
Abstract
Caprylic acid (CAP) is anticipated to be a potential biocontrol herbicide in the control of weeds, however the molecular mechanism of how CAP affects weeds is poorly understood. Here, the physiological and biochemical (protein-level) changes in horseweed (Conyza canadensis L.) are studied under CAP treatment, with infrared gas analyzer and label-free quantitative proteomics methods. In total, 112 differentially-accumulated proteins (DAPs) (>1.5 fold change, p < 0.05) are present between treated horseweed and control samples, with 46 up-regulated and 66 down-regulated proteins. These DAPs are involved in 28 biochemical pathways, including photosynthesis pathways. In particular, six photosynthesis proteins show significant abundance changes in the CAP-treated horseweed. The qRT-PCR results confirm three of the six genes involved in photosynthesis. Moreover, by measuring photosynthesis characteristics, CAP was shown to decrease photosynthetic rate, stomatal conductance, intercellular CO2 concentration, and the transpiration rate of horseweed. These results suggest that photosystem I is one of the main biological processes involved in the response of horseweed to CAP.
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Affiliation(s)
- Zuren Li
- Hunan Academy of Agricultural Sciences, Hunan Agricultural Biotechnology Research Institute, Changsha, 410125, China.,College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Wei Kuang
- Hunan Academy of Agricultural Sciences, Hunan Agricultural Biotechnology Research Institute, Changsha, 410125, China
| | - Yongbo Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Di Peng
- Hunan Academy of Agricultural Sciences, Hunan Agricultural Biotechnology Research Institute, Changsha, 410125, China
| | - Lianyang Bai
- Hunan Academy of Agricultural Sciences, Hunan Agricultural Biotechnology Research Institute, Changsha, 410125, China.,College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, 410128, China
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Huang H, Ye R, Qi M, Li X, Miller DR, Stewart CN, DuBois DW, Wang J. Wind-mediated horseweed (Conyza canadensis) gene flow: pollen emission, dispersion, and deposition. Ecol Evol 2015; 5:2646-58. [PMID: 26257877 PMCID: PMC4523360 DOI: 10.1002/ece3.1540] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 05/01/2015] [Accepted: 05/04/2015] [Indexed: 11/09/2022] Open
Abstract
Horseweed (Conyza canadensis) is a problem weed in crop production because of its evolved resistance to glyphosate and other herbicides. Although horseweed is mainly self-pollinating, glyphosate-resistant (GR) horseweed can pollinate glyphosate-susceptible (GS) horseweed. To the best of our knowledge, however, there are no available data on horseweed pollen production, dispersion, and deposition relative to gene flow and the evolution of resistance. To help fill this knowledge gap, a 43-day field study was performed in Champaign, Illinois, USA in 2013 to characterize horseweed atmospheric pollen emission, dispersion, and deposition. Pollen concentration and deposition, coupled with atmospheric data, were measured in a source field (180 m by 46 m) and its surrounding areas up to 1 km downwind horizontally and up to 100 m vertically. The source strength (emission rate) ranged from 0 to 140 pollen grains per plant per second (1170 to 2.1×106 per plant per day). For the life of the study, the estimated number of pollen grains generated from this source field was 10.5×1010 (2.3×106 per plant). The release of horseweed pollen was not strongly correlated to meteorological data and may be mainly determined by horseweed physiology. Horseweed pollen reached heights of 80 to100 m, making long-distance transport possible. Normalized (by source data) pollen deposition with distance followed a negative-power exponential curve. Normalized pollen deposition was 2.5% even at 480 m downwind from the source edge. Correlation analysis showed that close to or inside the source field at lower heights (≤3 m) vertical transport was related to vertical wind speed, while horizontal pollen transport was related to horizontal wind speed. High relative humidity prevented pollen transport at greater heights (3–100 m) and longer distances (0–1000 m) from the source. This study can contribute to the understanding of how herbicide-resistance weeds or invasive plants affect ecology through wind-mediated pollination and invasion.
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Affiliation(s)
- Haiyan Huang
- Illinois State Water Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign Champaign, Illinois
| | - Rongjian Ye
- Department of Plant Sciences, University of Tennessee 2431 Joe Johnson Dr., Knoxville, Tennessee
| | - Meilan Qi
- School of Science, Wuhan University of Technology Wuhan, Hubei, China
| | - Xiangzhen Li
- Chengdu Institute of Biology Chengdu, Sichuan, China
| | - David R Miller
- Department of Natural Resources and Environment, University of Connecticut Storrs, Connecticut
| | - Charles Neal Stewart
- Department of Plant Sciences, University of Tennessee 2431 Joe Johnson Dr., Knoxville, Tennessee
| | - David W DuBois
- Department of Plant and Environmental Sciences, New Mexico State University Las Cruces, New Mexico
| | - Junming Wang
- Illinois State Water Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign Champaign, Illinois
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