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Milani A, Panozzo S, Grazia TM, Scarabel L. Development of a rapid detection assay for acetolactate synthase inhibitors resistance in three Amaranthus weed species through loop-mediated isothermal amplification. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:5522-5532. [PMID: 38358049 DOI: 10.1002/jsfa.13385] [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: 12/05/2023] [Revised: 02/07/2024] [Accepted: 02/15/2024] [Indexed: 02/16/2024]
Abstract
BACKGROUND The early detection of herbicide resistance in weeds is a key factor to avoid herbicide waste and improve agriculture sustainability. The present study aimed to develop and validate an allele-specific loop-mediated isothermal amplification (AS-LAMP) assay for the quick on-site detection of the resistance-endowing point mutation Trp-574-Leu in the acetolactate synthase (ALS) gene in three widely diffused Amaranthus weed species: Amaranthus retroflexus, Amaranthus hybridus and Amaranthus tuberculatus. RESULTS The AS-LAMP protocol was developed on wild-type and ALS-mutant plants of the three species and revealed that the amplification approach with only the primer set specific for the mutant allele (574-Leu) was the most promising. The validation and estimation of the AS-LAMP performance evaluated by comparing the results with those of the molecular marker (cleaved amplified polymorphic sequences) indicated that, although the sensitivity and specificity were relatively high in all species (overall 100 and > 65%, respectively), precision was high for A. hybridus L. and A. retroflexus L. (75 and 79%, respectively), but quite low for A. tuberculatus (Moq.) J. D. Sauer (59%). The LAMP assay was also effective on crude genomic DNA extraction, allowing the quick detection of mutant plants in field situation (on site resistance detection). CONCLUSION The proposed AS-LAMP method has proven to be a promising technique for rapid detection of resistance as a result of Trp-574-Leu on the two monoecious weedy Amaranthus species but resulted less effective in the genetically variable dioecious species A. tuberculatus. © 2024 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Andrea Milani
- Institute for Sustainable Plant Protection (IPSP-CNR), Legnaro, Italy
| | - Silvia Panozzo
- Institute for Sustainable Plant Protection (IPSP-CNR), Legnaro, Italy
| | | | - Laura Scarabel
- Institute for Sustainable Plant Protection (IPSP-CNR), Legnaro, Italy
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Neta D, Abu-Nassar J, Cafri D, Ezra N, David I, Shtein I, Goldway M, Eizenberg H, Matzrafi M. Ambrosia grayi as a new alien causal species in Israel: plant biology and chemical management. PEST MANAGEMENT SCIENCE 2024; 80:3436-3444. [PMID: 38407460 DOI: 10.1002/ps.8048] [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: 11/30/2023] [Revised: 02/16/2024] [Accepted: 02/23/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Ambrosia grayi is a perennial weed native to northern Mexico, which can also be found in the Great Plains of the US. Outside the Americas, A. grayi has only been documented in Israel, where it is currently categorized as a casual species at advanced eradication stages. Here, we studied the plant biology and chemical weed management options of A. grayi. RESULTS Only large achenes of A. grayi (~5% of all achenes) contain seeds; moreover, the viability of seeds extracted from large achenes was ~25%. Examination of plant anatomy revealed that underground vegetative segments show an anatomical structure of stems (rhizomes) with anomalous secondary growth. The optimal (night/day) temperature for the emergence of A. grayi rhizomes was 20/30 °C, and the emergence rate increased under elevated temperatures. Emergence may occur at different soil moisture content (25-60%); rhizomes were able to emerge even after 1 month of drought conditions (20%, 25% and 30%). Herbicide combinations, such as fluroxypyr + glufosinate, fluroxypyr + glyphosate, and glyphosate + saflufenacil + surfactant, were tested under quarantine conditions and showed high efficacy for the control of A. grayi. However, the efficiency of these treatments was highly correlated with plant growth stage. CONCLUSION In Israel, the spread of A. grayi occurs mainly via rhizomes that can emerge under a wide range of temperatures and soil moisture conditions. Data regarding herbicide efficacy will aid in improving the eradication efforts taken by Israel's Plant Protection and Inspection Services. © 2024 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Danielle Neta
- The Faculty of Sciences, Tel-Hai College, Upper Galilee, Israel
- Department of Plant Pathology and Weed Research, Newe Ya'ar Research Center, Agricultural Research Organization (ARO), Ramat Yishay, Israel
| | - Jackline Abu-Nassar
- Department of Plant Pathology and Weed Research, Newe Ya'ar Research Center, Agricultural Research Organization (ARO), Ramat Yishay, Israel
| | - Daniella Cafri
- Plant Protection and Inspection Services, Ministry of Agriculture and Rural Development, Rishon LeTsiyon, Israel
| | - Nadav Ezra
- Plant Protection and Inspection Services, Ministry of Agriculture and Rural Development, Rishon LeTsiyon, Israel
| | - Izhak David
- Plant Protection and Inspection Services, Ministry of Agriculture and Rural Development, Rishon LeTsiyon, Israel
| | - Ilana Shtein
- Eastern R&D Center, Milken Campus, Ariel, Israel
| | - Martin Goldway
- The Faculty of Sciences, Tel-Hai College, Upper Galilee, Israel
- MIGAL Institute for Scientific Research in the Galilee, Kiryat Shemoneh, Israel
| | - Hanan Eizenberg
- Department of Plant Pathology and Weed Research, Newe Ya'ar Research Center, Agricultural Research Organization (ARO), Ramat Yishay, Israel
| | - Maor Matzrafi
- Department of Plant Pathology and Weed Research, Newe Ya'ar Research Center, Agricultural Research Organization (ARO), Ramat Yishay, Israel
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Khattak WA, Sun J, Hameed R, Zaman F, Abbas A, Khan KA, Elboughdiri N, Akbar R, He F, Ullah MW, Al-Andal A, Du D. Unveiling the resistance of native weed communities: insights for managing invasive weed species in disturbed environments. Biol Rev Camb Philos Soc 2024; 99:753-777. [PMID: 38174626 DOI: 10.1111/brv.13043] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 12/10/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024]
Abstract
Weed communities influence the dynamics of ecosystems, particularly in disturbed environments where anthropogenic activities often result in higher pollution. Understanding the dynamics existing between native weed communities and invasive species in disturbed environments is crucial for effective management and normal ecosystem functioning. Recognising the potential resistance of native weed communities to invasion in disturbed environments can help identify suitable native plants for restoration operations. This review aims to investigate the adaptations exhibited by native and non-native weeds that may affect invasions within disturbed environments. Factors such as ecological characteristics, altered soil conditions, and adaptations of native weed communities that potentially confer a competitive advantage relative to non-native or invasive weeds in disturbed environments are analysed. Moreover, the roles of biotic interactions such as competition, mutualistic relationships, and allelopathy in shaping the invasion resistance of native weed communities are described. Emphasis is given to the consideration of the resistance of native weeds as a key factor in invasion dynamics that provides insights for conservation and restoration efforts in disturbed environments. Additionally, this review underscores the need for further research to unravel the underlying mechanisms and to devise targeted management strategies. These strategies aim to promote the resistance of native weed communities and mitigate the negative effects of invasive weed species in disturbed environments. By delving deeper into these insights, we can gain an understanding of the ecological dynamics within disturbed ecosystems and develop valuable insights for the management of invasive species, and to restore long-term ecosystem sustainability.
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Affiliation(s)
- Wajid Ali Khattak
- School of Emergency Management, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
- School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
| | - Jianfan Sun
- School of Emergency Management, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
- School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
- Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, PO Box 215009, Suzhou City, Jiangsu Province, P.R. China
| | - Rashida Hameed
- School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
| | - Fawad Zaman
- Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed, Jiangxi Agricultural University, PO Box 330045, Nanchang City, Jiangxi Province, P.R. China
- Jiangxi Provincial Key Laboratory of Silviculture, College of Forestry, Jiangxi Agricultural University, PO Box 330045, Nanchang City, Jiangxi Province, P.R. China
| | - Adeel Abbas
- School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
| | - Khalid Ali Khan
- Applied College, Center of Bee Research and its Products, Unit of Bee Research and Honey Production, and Research Center for Advanced Materials Science (RCAMS), King Khalid University, PO Box 9004, Abha, 61413, Saudi Arabia
| | - Noureddine Elboughdiri
- Chemical Engineering Department, College of Engineering, University of Ha'il, PO Box 2440, Ha'il, 81441, Saudi Arabia
- Chemical Engineering Process Department, National School of Engineers Gabes, University of Gabes, 6029, Gabes, Tunisia
| | - Rasheed Akbar
- School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
- Department of Entomology, The University of Haripur, PO Box 22620, Haripur, Khyber Pakhtunkhwa, Pakistan
| | - Feng He
- School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
| | - Muhammad Wajid Ullah
- Biofuels Institute, School of The Environmental and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
| | - Abeer Al-Andal
- Department of Biology, College of Science, King Khalid University, PO Box 960, Abha, 61413, Saudi Arabia
| | - Daolin Du
- School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, PO Box 212013, Zhenjiang City, Jiangsu Province, China
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Sun S, Li Y, Wang W, Kou S, Huo J, An Z, Zhu L, Li K, Chen L, Zhang J. Discovery of novel Propionamide-Pyrazole-Carboxylates as Transketolase-inhibiting herbicidal candidates. PEST MANAGEMENT SCIENCE 2024. [PMID: 38808579 DOI: 10.1002/ps.8202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/12/2024] [Accepted: 05/15/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND Transketolase (TKL, EC 2.2.1.1) is a key enzyme in the pentose phosphate pathway and Calvin cycle, and is expected to act as a herbicidal site-of-action. On the basis of TKL, we designed and synthesized a series of 1-oxy-propionamide-pyrazole-3-carboxylate analogues and evaluated their herbicidal activities. RESULTS Methyl 1-methyl-5-((1-oxo-1-((4-(trifluoromethyl)phenyl)amino)propan-2-yl)oxy)-1H-pyrazole-3-carboxylate (C23) and methyl 1-methyl-5-((1-oxo-1-((perfluorophenyl)amino)propan-2-yl)oxy)-1H-pyrazole-3-carboxylate (C33) were found to provide better growth-inhibition activities against Digitaria sanguinalis root than those of nicosulfuron, mesotrione and pretilachlor at 200 mg L-1 using the small-cup method. These compounds were also identified as promising compounds in pre-emergence and postemergence herbicidal-activity experiments, with relatively good inhibitory effects toward Amaranthus retroflexus and D. sanguinalis at 150 g ai ha-1. In addition, enzyme inhibition assays and molecular docking studies revealed that C23 and C33 interact favourably with SvTKL (Setaria viridis TKL). CONCLUSION C23 and C33 are promising lead TKL inhibitors for the optimization of new herbicides. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Susu Sun
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Yaze Li
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Wenfei Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Song Kou
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Jinqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Zexiu An
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Lin Zhu
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Kaiwen Li
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, P. R. China
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Kerr DR, Concepcion JCT, Strom SA, Riechers DE. Quantifying resistance to very-long-chain fatty acid-inhibiting herbicides in Amaranthus tuberculatus using a soilless assay. PLoS One 2023; 18:e0295927. [PMID: 38134124 PMCID: PMC10745185 DOI: 10.1371/journal.pone.0295927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
Resistance to preemergence (PRE) soil-applied herbicides, such as inhibitors of very-long-chain fatty acid (VLCFA) elongases, was documented in two waterhemp [Amaranthus tuberculatus (Moq.) J.D. Sauer] populations (SIR and CHR) from Illinois, USA. To limit the spread of resistant weed populations, rapid detection measures are necessary. Soil-based resistance assays are limited by edaphic factors, application timing, variable seeding depth and rainfall amount. Therefore, cost-effective techniques mitigating effects of edaphic factors that are appropriate for small- to large-scale assays are needed. Our research goal was to identify and quantify resistance to the VLCFA-inhibiting herbicides, S-metolachlor and pyroxasulfone, using a soilless greenhouse assay. Dose-response experiments were conducted under greenhouse conditions with pre-germinated waterhemp seeds planted on the vermiculite surface, which had been saturated with S-metolachlor (0.015-15 μM), pyroxasulfone (0.0005-1.5 μM), or S-metolachlor plus the cytochrome P450 (P450) inhibitor, malathion. Lethal dose estimates of 50% (LD50) and growth reduction of 50% (GR50) were calculated for S-metolachlor and pyroxasulfone PRE and used to determine resistance indices (RI) for resistant populations (CHR and SIR) relative to sensitive populations, SEN and ACR. RI values for S-metolachlor using LD50 values calculated relative to SEN and ACR were 17.2 and 15.2 (CHR) or 11.5 and 10.1 (SIR), while RI values for pyroxasulfone using LD50 values calculated relative to SEN and ACR were 3.8 and 3.1 (CHR) or 4.8 and 3.8 (SIR). Malathion decreased the GR50 of S-metolachlor to a greater degree in CHR compared to ACR, consistent with P450 involvement in S-metolachlor resistance in CHR. Results from these soilless assays are in accord with previous findings in soil-based systems that demonstrate CHR and SIR are resistant to S-metolachlor and pyroxasulfone. This method provides an effective, reproducible alternative to soil-based systems for studying suspected PRE herbicide-resistant populations and will potentially assist in identifying non-target-site resistance mechanisms.
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Affiliation(s)
- Dylan R. Kerr
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States of America
| | | | - Seth A. Strom
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States of America
| | - Dean E. Riechers
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States of America
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Bergamo TF, de Lima RS, Kull T, Ward RD, Sepp K, Villoslada M. From UAV to PlanetScope: Upscaling fractional cover of an invasive species Rosa rugosa. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 336:117693. [PMID: 36913856 DOI: 10.1016/j.jenvman.2023.117693] [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: 01/17/2023] [Revised: 02/28/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Invasive plant species pose a direct threat to biodiversity and ecosystem services. Among these, Rosa rugosa has had a severe impact on Baltic coastal ecosystems in recent decades. Accurate mapping and monitoring tools are essential to quantify the location and spatial extent of invasive plant species to support eradication programs. In this paper we combined RGB images obtained using an Unoccupied Aerial Vehicle, with multispectral PlanetScope images to map the extent of R. rugosa at seven locations along the Estonian coastline. We used RGB-based vegetation indices and 3D canopy metrics in combination with a random forest algorithm to map R. rugosa thickets, obtaining high mapping accuracies (Sensitivity = 0.92, specificity = 0.96). We then used the R. rugosa presence/absence maps as a training dataset to predict the fractional cover based on multispectral vegetation indices derived from the PlanetScope constellation and an Extreme Gradient Boosting algorithm (XGBoost). The XGBoost algorithm yielded high fractional cover prediction accuracies (RMSE = 0.11, R2 = 0.70). An in-depth accuracy assessment based on site-specific validations revealed notable differences in accuracy between study sites (highest R2 = 0.74, lowest R2 = 0.03). We attribute these differences to the various stages of R. rugosa invasion and the density of thickets. In conclusion, the combination of RGB UAV images and multispectral PlanetScope images is a cost-effective method to map R. rugosa in highly heterogeneous coastal ecosystems. We propose this approach as a valuable tool to extend the highly local geographical scope of UAV assessments into wider areas and regional evaluations.
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Affiliation(s)
- Thaísa F Bergamo
- Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51006, Tartu, Estonia; Department of Geographical and Historical Studies, University of Eastern Finland, P.O. Box 111, FI-80101, Joensuu, Finland.
| | - Raul Sampaio de Lima
- Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51006, Tartu, Estonia
| | - Tiiu Kull
- Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51006, Tartu, Estonia
| | - Raymond D Ward
- Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51006, Tartu, Estonia; Centre for Aquatic Environments, School of the Environment and Technology, University of Brighton, Cockcroft Building, Moulsecoomb, Brighton, BN2 4GJ, UK
| | - Kalev Sepp
- Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51006, Tartu, Estonia
| | - Miguel Villoslada
- Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51006, Tartu, Estonia; Department of Geographical and Historical Studies, University of Eastern Finland, P.O. Box 111, FI-80101, Joensuu, Finland
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Farber C, Shires M, Ueckert J, Ong K, Kurouski D. Detection and differentiation of herbicide stresses in roses by Raman spectroscopy. FRONTIERS IN PLANT SCIENCE 2023; 14:1121012. [PMID: 37342141 PMCID: PMC10277736 DOI: 10.3389/fpls.2023.1121012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 05/18/2023] [Indexed: 06/22/2023]
Abstract
Herbicide application is a critical component of modern horticulture. Misuse of herbicides can result in damage to economically important plants. Currently, such damage can be detected only at symptomatic stages by subjective visual inspection of plants, which requires substantial biological expertise. In this study, we investigated the potential of Raman spectroscopy (RS), a modern analytical technique that allows sensing of plant health, for pre-symptomatic diagnostics of herbicide stresses. Using roses as a model plant system, we investigated the extent to which stresses caused by Roundup (Glyphosate) and Weed-B-Gon (2, 4-D, Dicamba and Mecoprop-p (WBG), two of the most commonly used herbicides world-wide, can be diagnosed at pre- and symptomatic stages. We found that spectroscopic analysis of rose leaves enables ~90% accurate detection of Roundup- and WBG-induced stresses one day after application of these herbicides on plants. Our results also show that the accuracy of diagnostics of both herbicides at seven days reaches 100%. Furthermore, we show that RS enables highly accurate differentiation between the stresses induced by Roundup- and WBG. We infer that this sensitivity and specificity arises from the differences in biochemical changes in plants that are induced by both herbicides. These findings suggest that RS can be used for a non-destructive surveillance of plant health to detect and identify herbicide-induced stresses in plants.
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Affiliation(s)
- Charles Farber
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, United States
| | - Madalyn Shires
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
| | - Jake Ueckert
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
| | - Kevin Ong
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, United States
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, United States
- Department of Molecular and Environmental Plant Science, Texas A&M University, College Station, TX, United States
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Tataridas A, Travlos I, Freitas H. Agroecology and invasive alien plants: A winner-take-all game. FRONTIERS IN PLANT SCIENCE 2023; 14:1143814. [PMID: 36938062 PMCID: PMC10017749 DOI: 10.3389/fpls.2023.1143814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Affiliation(s)
- Alexandros Tataridas
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, Athens, Greece
| | - Ilias Travlos
- Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, Athens, Greece
| | - Helena Freitas
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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Barta CÉ, Jenkins BC, Lindstrom DS, Zahnd AK, Székely G. The First Evidence of Gibberellic Acid's Ability to Modulate Target Species' Sensitivity to Honeysuckle ( Lonicera maackii) Allelochemicals. PLANTS (BASEL, SWITZERLAND) 2023; 12:1014. [PMID: 36903875 PMCID: PMC10005159 DOI: 10.3390/plants12051014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/20/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Invasive species employ competitive strategies such as releasing allelopathic chemicals into the environment that negatively impact native species. Decomposing Amur honeysuckle (Lonicera maackii) leaves leach various allelopathic phenolics into the soil, decreasing the vigor of several native species. Notable differences in the net negative impacts of L. maackii metabolites on target species were argued to depend on soil properties, the microbiome, the proximity to the allelochemical source, the allelochemical concentration, or environmental conditions. This study is the first to address the role of target species' metabolic properties in determining their net sensitivity to allelopathic inhibition by L. maackii. Gibberellic acid (GA3) is a critical regulator of seed germination and early development. We hypothesized that GA3 levels might affect the target sensitivity to allelopathic inhibitors and evaluated differences in the response of a standard (control, Rbr), a GA3-overproducing (ein), and a GA3-deficient (ros) Brassica rapa variety to L. maackii allelochemicals. Our results demonstrate that high GA3 concentrations substantially alleviate the inhibitory effects of L. maackii allelochemicals. A better understanding of the importance of target species' metabolic properties in their responses to allelochemicals will contribute to developing novel invasive species control and biodiversity conservation protocols and may contribute to applications in agriculture.
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Affiliation(s)
- Csengele Éva Barta
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Brian Colby Jenkins
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Devon Shay Lindstrom
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Alyka Kay Zahnd
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Gyöngyi Székely
- Hungarian Department of Biology and Ecology, Faculty of Biology and Geology, Babeș-Bolyai University, 5-7 Clinicilor St., 400006 Cluj-Napoca, Romania
- Institute for Research-Development-Innovation in Applied Natural Sciences, Babeș-Bolyai University, 30 Fântânele St., 400294 Cluj-Napoca, Romania
- Centre for Systems Biology, Biodiversity and Bioresources (3B), Babeș-Bolyai University, 5-7 Clinicilor St., 400006 Cluj-Napoca, Romania
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10
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Duke SO. Changes Are in the Air. PEST MANAGEMENT SCIENCE 2023; 79:7-8. [PMID: 36482284 DOI: 10.1002/ps.7291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
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Streamlining Agroecological Management of Invasive Plant Species: The Case of Solanum elaeagnifolium Cav. DIVERSITY 2022. [DOI: 10.3390/d14121101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The increased demand for the adoption of sustainable practices to protect agroecosystems is challenged by the introduction and dominance of invasive plant species (IPS). The management of IPS requires a direct response from farmers and policy makers and is often associated with the adoption of practices that have negative ecological impacts. Solanum elaeagnifolium Cav. (silverleaf nightshade) is a noxious IPS posing a serious threat to agriculture and the environment. The increased resistance to the biotic and abiotic stress factors caused by high phenotypic plasticity, dense trichomes, and spines allow the weed to adapt to many habitats, rendering several herbicides ineffective. If an early detection and eradication fails, multiple management strategies should be adopted to mitigate a further dispersal. Herbicides should be applied before or during flowering to prevent the formation of berries and the production of seeds. Precision agriculture tools, such as decision support systems, can be exploited to reduce the herbicide input. Soil tillage should be avoided to prevent clonal reproduction. Mowing is an effective tool to prevent the setting of seeds. Biological agents should be carefully released as a part of an agroecological weed management framework. Future research should focus on the development of cross-boundary protocols and actions to monitor the introduction pathways for the early detection and agroecological management of S. elaeagnifolium.
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Comparative Analysis of Tolerance to Salt Stress and Water Deficit in Two Invasive Weeds of the Genus Erigeron (Asteraceae). PLANTS 2022; 11:plants11152059. [PMID: 35956537 PMCID: PMC9370665 DOI: 10.3390/plants11152059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 11/17/2022]
Abstract
Erigeron bonariensis and E. sumatrensis are two noxious weeds present in many parts of the world. Their tolerance to salinity and water deficit was analysed at the seed germination stage and during vegetative development. Seed germination was tested in solutions with different concentrations of NaCl and polyethylene glycol (PEG). Growth parameters, photosynthetic pigments, ion accumulation, and antioxidant mechanisms were analysed in plants that were subjected to increasing NaCl solutions, or severe water deficit by completely restricting irrigation. Seed germination was mostly affected by NaCl, but less by PEG in both species. E. bonariensis had a faster germination in all treatments and maintained a higher percentage of germination under the highest concentration of salt applied. Growth responses were similar in the two species, both being more affected by higher salt concentrations than by water deficit. The main differences in the responses of the two species to stress regard K+ and proline concentration. K+ in roots decreased under salt stress in E. sumatrensis, but remained constant in leaves, whereas in E. bonariensis increased in roots and leaves in salt-stressed plants. Proline concentration increased in all E. bonariensis plants under salt stress, but only in those under the highest salt concentration in E. sumatrensis. The results obtained indicate that the two species are relatively tolerant to water deficit and medium salinity but are susceptible to high NaCl concentrations.
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