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Lukina E, Gomzhina M, Dalinova A, Dubovik V, Gordina E, Bozhkova S, Smirnov S, Berestetskiy A. Reappraisal of Didymella macrostoma causing white tip disease of Canada thistle as a new species, Didymella baileyae, sp. nov., and bioactivity of its major metabolites. Mycologia 2024:1-26. [PMID: 39178348 DOI: 10.1080/00275514.2024.2367470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 06/10/2024] [Indexed: 08/25/2024]
Abstract
Bioherbicides are expected to be a supplement to integrated pest management, assisting in the control of problematic weed species. For instance, bioherbicides (Phoma and BioPhoma) were recently registered in Canada and the USA for the control of some perennial dicotyledonous weeds in lawns. These products are based on strains of the fungus Didymella macrostoma (syn. Phoma macrostoma) that causes white tip disease (WTD) in Canada thistle (Cirsium arvense). In this study, WTD was reported for the first time in the Russian Federation. Analysis of the internal transcribed spacer (ITS) region of nuc rDNA and secondary metabolite profiling confirmed the identity of Russian WTD isolates to Canadian biocontrol strains identified as D. macrostoma. Multilocus phylogenetic analysis based on sequencing of the ITS region, partial large subunit nuc rDNA region (28S), RNA polymerase II second largest subunit gene (rpb2), and partial β-tubulin gene (tub2) has differentiated the WTD isolates from C. arvense and D. macrostoma isolates from other plant hosts. Based on phylogenetic, morphological, and chemotaxonomic features, these WTD isolates were described as a new species named Didymella baileyae, sp. nov. This study also demonstrated the low pathogenicity of the ex-type D. baileyae isolate VIZR 1.53 to C. arvense seedlings and its asymptomatic development in the leaves of aboveground shoots. The organic extracts from mycelium and culture filtrate of D. baileyae, as well as macrocidin A and macrocidin Z, displayed phytotoxicity both to C. arvense leaves and seedlings. Macrocidin A was only detected in the naturally infected leaf tissues of C. arvense showing WTD symptoms. Macrocidins A and Z demonstrated low antimicrobial and cytotoxic activities, exhibiting no entomotoxic properties. The data obtained within this study on the pathogenicity and metabolites of D. baileyae may be important for the rational evaluation of its prospects as a biocontrol agent.
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Affiliation(s)
- Elizaveta Lukina
- Laboratory of Phytotoxicology and Biotechnology, All-Russian Institute of Plant Protection, Pushkin, Saint Petersburg 196608, Russia
| | - Maria Gomzhina
- Laboratory of Mycology and Phytopathology, All-Russian Institute of Plant Protection, Pushkin, Saint Petersburg 196608, Russia
| | - Anna Dalinova
- Laboratory of Phytotoxicology and Biotechnology, All-Russian Institute of Plant Protection, Pushkin, Saint Petersburg 196608, Russia
| | - Vsevolod Dubovik
- Laboratory of Phytotoxicology and Biotechnology, All-Russian Institute of Plant Protection, Pushkin, Saint Petersburg 196608, Russia
| | - Ekaterina Gordina
- Department of Wound Infection Prevention and Treatment, Vreden National Medical Research Center of Traumatology and Orthopedics, Saint Petersburg 195427, Russia
| | - Svetlana Bozhkova
- Department of Wound Infection Prevention and Treatment, Vreden National Medical Research Center of Traumatology and Orthopedics, Saint Petersburg 195427, Russia
| | - Sergey Smirnov
- Magnetic Resonance Research Centre, St. Petersburg State University, Saint Petersburg 198504, Russia
| | - Alexander Berestetskiy
- Laboratory of Phytotoxicology and Biotechnology, All-Russian Institute of Plant Protection, Pushkin, Saint Petersburg 196608, Russia
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Krumsri R, Kato-Noguchi H, Poonpaiboonpipat T. Allelopathic Effects of Sugarcane Leaves: Optimal Extraction Solvent, Partial Separation of Allelopathic Active Fractions, and Herbicidal Activities. PLANTS (BASEL, SWITZERLAND) 2024; 13:2085. [PMID: 39124203 PMCID: PMC11314032 DOI: 10.3390/plants13152085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 07/13/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024]
Abstract
The inhibitory potential of allelopathic plants is the subject of increasing research attention for their application in weed management. The sugarcane leaf is an agricultural waste product that has been reported to have allelopathic potential. Therefore, the present study determined the optimal organic solvent system and fractionation procedure to enhance the quantity of this extract and its allelopathic efficiency. Sugarcane leaves were extracted using five ethanol/water solvent ratios (v/v): 00:100, 25:75, 50:50, 75:25, and 100:00. Their allelopathic effects on seed germination and seedling growth were assayed in two major weeds, Echinochloa crus-galli (L.) Beauv. and Amaranthus viridis L. The results showed that the extract concentration, solvent ratio, and their interaction significantly inhibited the growth parameters in A. viridis. Consequently, a crude ethanol/water ratio of 00:100 was used to separate the active fraction via acid-base solvent partitioning. The acidic fraction (AE) exerted the greatest inhibitory effect and completely (100%) inhibited A. viridis at all concentrations, followed by the original crude fraction, neutral fraction, and aqueous fraction. Moreover, all of the fractions had selective effects, inhibiting A. viridis much more than E. crus-galli in the laboratory tests. The chemical analysis using gas chromatography/mass spectrometry indicated that the AE fraction contained 20 different compounds. The five major compounds included alkaloids, organic acids, and phenols. Therefore, the AE fraction was selected for formulation in a concentrated suspension and tested for its herbicidal characteristics. The formulation exhibited early post-emergence activities and had a stronger effect on A. viridis compared to E. crus-galli. The physiological mechanism of the formulation was tested against A. viridis. The thiobarbituric acid reactive substances and H2O2 occurred in the A. viridis leaf, which suggests lipid peroxidation and cell disruption.
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Affiliation(s)
- Ramida Krumsri
- Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand;
- Center of Knowledge and Technology for Cane and Sugar, Faculty of Agro-Industry, Kasetsart University, 50 Ngamwongwan Road, Ladyao, Chatuchak, Bangkok 10900, Thailand
| | - Hisashi Kato-Noguchi
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki 761-0795, Kagawa, Japan;
| | - Thanatsan Poonpaiboonpipat
- Department of Agricultural Science, Faculty of Natural Resources and Environment, Naresuan University, Phitsanulok 65000, Thailand
- Center of Knowledge and Technology for Cane and Sugar, Faculty of Agro-Industry, Kasetsart University, 50 Ngamwongwan Road, Ladyao, Chatuchak, Bangkok 10900, Thailand
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Ben Romdhane O, Baccari W, Saidi I, Flamini G, Ascrizzi R, Chaieb I, Halim Harrath A, Jannet HB. Chemical Composition, Repellent, and Phytotoxic Potentials of the Fractionated Resin Essential Oil from Araucaria heterophylla Growing in Tunisia. Chem Biodivers 2024; 21:e202400185. [PMID: 38513004 DOI: 10.1002/cbdv.202400185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/05/2024] [Accepted: 03/19/2024] [Indexed: 03/23/2024]
Abstract
The resin essential oil (REO) of the Tunisian Araucaria heterophylla trunk bark was investigated for its chemical composition. Then, it was evaluated for its insecticidal and allelopathic activities. The REO was obtained by hydrodistillation for 9 h (yield of 4.2 % w/w). Moreover, fractional hydrodistillation was carried out at 3-hour intervals, resulting in 3 fractions (R1-R3), to facilitate chemical identification and localization of the aforementioned biological activities. GC/MS analysis of the obtained samples allowed the identification of 25 compounds, representing between 91.2 and 96.3 % of their total constituents, which consisted predominantly of sesquiterpene hydrocarbons, oxygenated sesquiterpenes and diterpene hydrocarbons. α-Copaene (10.8 %), γ-muurolene (5.8 %), α-copaen-11-ol (7.8 %), spathulenol (10.5 %), 15-copaenol (8.2 %), ylangenal (10.3 %), dehydrosaussurea lactone (7.7 %), and sandaracopimaradiene (11.4 %) were identified as major compounds. The second part aimed to assess the impact of the A. heterophylla EO and its three fractions for their insecticidal and repellent activity against Tribolium castaneum (Herbst), a stored grain pest, of which a strong repellent activity was noted. In addition, the studied samples showed high phytotoxic effects against Lactuca sativa. The third fraction (R3) performed a total inhibitory potential on seed germination and seedling growth of the target plant. Furthermore, alongside this discovery, an estimation was conducted through molecular docking analysis. Wherein the main compounds of the studied samples were docked into the active pocket of protoporphyrinogen IX oxidase (PDB: 1SEZ), a key enzyme in chlorophyll biosynthesis. Thus, it is recommended to use the REO of A. heterophylla as a natural herbicide.
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Affiliation(s)
- Oumayma Ben Romdhane
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Avenue of Environment, 5019, Monastir, Tunisia Phone
| | - Wiem Baccari
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Avenue of Environment, 5019, Monastir, Tunisia Phone
| | - Ilyes Saidi
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Avenue of Environment, 5019, Monastir, Tunisia Phone
| | - Guido Flamini
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute" Nutrafood, University of Pisa, Italy
| | - Roberta Ascrizzi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute" Nutrafood, University of Pisa, Italy
| | - Ikbal Chaieb
- Laboratory of Horticultural production and protection (LR21AGR03) Regional Centre of Research on Horticulture and Organic Agriculture, 57, University of Sousse, Chott Mariem, TN-4042, Sousse, Tunisia
| | - Abdel Halim Harrath
- Department of Zoology, College of Science, King Saud University, Riyad, 11451, Saudi Arabia
| | - Hichem Ben Jannet
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Avenue of Environment, 5019, Monastir, Tunisia Phone
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Kayalvizhi R, Sanjana J, Jacob S, Kumar V. An Eclectic Review on Dicarboxylic Acid Production Through Yeast Cell Factories and Its Industrial Prominence. Curr Microbiol 2024; 81:147. [PMID: 38642080 DOI: 10.1007/s00284-024-03654-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 02/29/2024] [Indexed: 04/22/2024]
Abstract
Dicarboxylic acid (DCA) is a multifaceted chemical intermediate, recoursed to produce many industrially important products such as adhesives, plasticizers, lubricants, polymers, etc. To bypass the shortcomings of the chemical methods of synthesis of DCA and to reduce fossil fuel footprints, bio-based synthesis is gaining attention. In pursuit of an eco-friendly sustainable alternative method of DCA production, microbial cell factories, and renewable organic resources are gaining popularity. Among the plethora of microbial communities, yeast is being favored industrially compared to bacterial fermentation due to its hyperosmotic and low pH tolerance and flexibility for gene manipulations. By application of rapidly evolving genetic manipulation techniques, the bio-based DCA production could be made more precise and economical. To bridge the gap between supply and demand of DCA, many strategies are employed to improve the fermentation. This review briefly outlines the advancements in DCA production using yeast cell factories with the exemplification of strain improvement strategies.
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Affiliation(s)
- Ramalingam Kayalvizhi
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Chengalpattu Dist., Kattankulathur, Tamil Nadu, 603203, India
| | - Jayacumar Sanjana
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Chengalpattu Dist., Kattankulathur, Tamil Nadu, 603203, India
| | - Samuel Jacob
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Chengalpattu Dist., Kattankulathur, Tamil Nadu, 603203, India.
| | - Vinod Kumar
- School of Water, Energy and Environment, Cranfield University, Cranfield, MK43 0AL, UK.
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Jia Y, Jiang P, Wang X, Ablajan K. One-Pot, Metal-Free Synthesis of Allyl Sulfones in Water. J Org Chem 2024. [PMID: 38194354 DOI: 10.1021/acs.joc.3c01421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
A one-pot dehydration cross-coupling reaction between allyl alcohols and sodium sulfinates that provides allyl sulfones in good to excellent yields is presented. Its broad substrate scope includes symmetrical and asymmetrical α,α-diaryl- and α-aryl-substituted allylic alcohols and aryl and alkyl sodium sulfinates. For asymmetrical allylic substrates, the E isomer predominates with examples of excellent stereoselectivity. Control experiments provide the basis for a proposed radical-mediated mechanism. The metal-free procedure applies cheap and commercially available tetrabutylammonium tribromide as the catalyst and H2O as the solvent. Notable features of this simple, efficient, weakly toxic, and environmentally benign strategy include mild and convenient operating conditions and readily accessible starting materials.
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Affiliation(s)
- Yunfei Jia
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
| | - Ping Jiang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
| | - Xinqian Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
| | - Keyume Ablajan
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
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Pérez-de-Luque A. Can nanotechnology improve the application of bioherbicides? PEST MANAGEMENT SCIENCE 2024; 80:49-55. [PMID: 37132412 DOI: 10.1002/ps.7526] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/18/2023] [Accepted: 05/03/2023] [Indexed: 05/04/2023]
Abstract
Bioherbicides are composed of microorganisms or natural compounds and are used for weed control; however, they have specific weaknesses and constraints that hinder their development and success under field conditions. Nanotechnology can help to overcome these limitations by providing a good starting point for the design of specific formulations and carriers that minimize the deficiencies of natural compounds and microorganisms, such as low solubility, short shelf life or a loss of viability. In addition, nanoformulations can help to improve the efficacy of bioherbicides by increasing their effectiveness and bioavailability, reducing the amount required for a treatment, and enhancing their ability to target specific weeds while preserving the crop. However, it is important to choose the right materials and nanodevices depending on specific needs and considering several factors inherent to nanomaterials such as production cost, safety or possible toxic effects. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Alejandro Pérez-de-Luque
- Plant Breeding and Biotechnology, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Centre Alameda del Obispo, Córdoba, Spain
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Ribeiro VP, Bajsa-Hirschel J, Tamang P, Meepagala K, Duke SO. Antifungal and Phytotoxic Activities of Isolated Compounds from Helietta parvifolia Stems. Molecules 2023; 28:7930. [PMID: 38067660 PMCID: PMC10708216 DOI: 10.3390/molecules28237930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/03/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
The identification of natural and environmentally friendly pesticides is a key area of interest for the agrochemical industry, with many potentially active compounds being sourced from numerous plant species. In this study, we report the bioassay-guided isolation and identification of phytotoxic and antifungal compounds from the ethyl acetate extract of Helietta parvifolia stems. We identified eight compounds, consisting of two coumarins and six alkaloids. Among these, a new alkaloid, 2-hydroxy-3,6,7-trimethoxyquinoline-4-carbaldehyde (6), was elucidated, along with seven known compounds. The phytotoxicity of purified compounds was evaluated, and chalepin (4) was active against Agrostis stolonifera at 1 mM with 50% inhibition of seed germination and it reduced Lemna pausicotata (duckweed) growth by 50% (IC50) at 168 μM. Additionally, we evaluated the antifungal activity against the fungal plant pathogen Colletotrichum fragariae using a thin-layer chromatography bioautography assay, which revealed that three isolated furoquinoline alkaloids (flindersiamine (3), kokusagenine (7), and maculine (8)) among the isolated compounds had the strongest inhibitory effects on the growth of C. fragariae at all tested concentrations. Our results indicate that these active natural compounds, i.e., (3), (4), (7), and (8), could be scaffolds for the production of more active pesticides with better physicochemical properties.
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Affiliation(s)
- Victor Pena Ribeiro
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Joanna Bajsa-Hirschel
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Prabin Tamang
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Kumudini Meepagala
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Stephen O. Duke
- National Center for Natural Products Research, University, MS 38677, USA;
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Ghanbari H, Ghanbari R, Delazar A, Ebrahimi SN, Memar MY, Moghadam SB, Hamedeyazdan S, Nazemiyeh H. Caccinia macranthera Brand var. macranthera: Phytochemical analysis, phytotoxicity and antimicrobial investigations of essential oils with concomitant in silico molecular docking based on OPLS force-field. Toxicon 2023; 234:107291. [PMID: 37734456 DOI: 10.1016/j.toxicon.2023.107291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/23/2023] [Accepted: 09/12/2023] [Indexed: 09/23/2023]
Abstract
This study was conducted to extract the essential oils (EOs) of Caccinia macranthera identify their phytochemicals, evaluate their phytotoxicity, antimicrobial activity and enzyme inhibition effects using in silico molecular docking technique. EOs of aerial parts, seeds, and roots of C. macranthera were extracted and analyzed via Gas chromatography-Mass Spectrometry. The antibacterial activity of EOs were determined on nine microorganisms via disk diffusion and microbroth dilution assays. In addition, the allelopathic properties of EOs were investigated by calculating the IC50s for inhibition of germination, seedling length and seedling weight growth of Cuscuta campestris seeds. In order to assess the possible inhibitory effect of major components of C. macranthera EOs on enzymes inhibiting germination and plant growth, molecular docking was employed against the glutamine synthetase (GS), acetohydroxyacid synthetase (AHAS), and 4-hydroxyphenyl pyruvate dioxygenase (HPPD) enzymes. The main compounds of EOs from aerial parts, seeds, and roots EOs were dihydrocarveol (29.5%), Trimethyl-2-Pentadecanone (13.6%), and Palmitic acid (16.8%), respectively. The maximum antibacterial effect was related to the aerial parts EO against Staphylococcus epidermidis. Phytotoxicity analysis exhibited a concentration-dependent increase (p ≤ 0.05) activity. The aerial parts EO demonstrated a substantial allelopathy effect, with IC50 values of 0.22 ± 0.026, 0.39 ± 0.021, and 0.20 ± 0.025 mg/mL, respectively, on inhibitory germination, seedling length and seedling weight growth of Cuscuta campestris seeds. Molecular docking analyzes showed that Oleic acid was suitable for dynamic stabilization of HPPD (-6.552 kJ/mol) and GS (-7.265 kJ/mol) and Eupatoriochromene had the inhibitory potential against AHAS, with docking score of -4.189 kJ/mol. The current research demonstrated that C. macranthera EOs from its aerial parts have an acceptable phytotoxic activity against Cuscuta campestris weed. The major components of EOs, Oleic acid and Eupatoriochromene, presented the strongest binding with HPPD, GS, and AHAS active sites causing disturbance in germination, photosynthesis and weed growth suggesting it as a natural herbicide for controlling the weeds.
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Affiliation(s)
- Hadi Ghanbari
- Department of Pharmacognosy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Ghanbari
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, USA
| | - Abbas Delazar
- Department of Pharmacognosy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samad Nejad Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
| | - Mohammad Yousef Memar
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Sanaz Hamedeyazdan
- Department of Pharmacognosy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Research Center for Integrative Medicine in Aging, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Hossein Nazemiyeh
- Department of Pharmacognosy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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Yin F, Qin Z. Long-Chain Molecules with Agro-Bioactivities and Their Applications. Molecules 2023; 28:5880. [PMID: 37570848 PMCID: PMC10421526 DOI: 10.3390/molecules28155880] [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: 07/10/2023] [Revised: 07/31/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Long-chain molecules play a vital role in agricultural production and find extensive use as fungicides, insecticides, acaricides, herbicides, and plant growth regulators. This review article specifically addresses the agricultural biological activities and applications of long-chain molecules. The utilization of long-chain molecules in the development of pesticides is an appealing avenue for designing novel pesticide compounds. By offering valuable insights, this article serves as a useful reference for the design of new long-chain molecules for pesticide applications.
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Affiliation(s)
| | - Zhaohai Qin
- College of Science, China Agricultural University, Beijing 100193, China;
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10
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Jiang ZB, Gao S, Hu W, Sheng BR, Shi J, Ye F, Fu Y. Design, synthesis and biological activity of novel triketone herbicides containing natural product fragments. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 194:105493. [PMID: 37532319 DOI: 10.1016/j.pestbp.2023.105493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 08/04/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, HPPD) belongs to the non-heme Fe2+ - containing enzyme family and is an important enzyme in tyrosine decomposition. HPPD is crucial to the discovery of novel bleaching herbicides. To develop novel HPPD inhibitor herbicides containing the β-triketone motif, a series of 4-hydroxyl-3-(substituted aryl)-pyran-2-one derivatives were designed using the active fragment splicing method. The title compounds were synthesized and characterized through infrared spectroscopy (IR), 1H nuclear magnetic resonance (1H NMR), 13C nuclear magnetic resonance (13C NMR), and high-resolution mass spectrometry (HRMS). The X-ray diffraction method determined the single crystal structure of I-17. Preliminary bioassay data revealed that several novel compounds, especially I-12 and II-3, showed excellent herbicidal activity against broadleaf and monocotyledonous weeds at a dose of 150 g ai/ha. The results of crop selectivity and carotenoids determination indicated that compound I-12 is more suitable for wheat and cotton fields than mesotrione. Additionally, compound II-3 is safer for soybeans and peanuts than mesotrione. The inhibitory activity of Arabidopsis thaliana HPPD (AtHPPD) verified that compound II-3 showed the most activity with an IC50 value of 0.248 μM, which was superior to that of mesotrione (0.283 μM) in vitro. The binding mode of compound II-3 and AtHPPD was confirmed through molecular docking and molecular dynamics simulations. This study provides insights into the future development of natural and efficient herbicides.
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Affiliation(s)
- Zi-Bin Jiang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Wei Hu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Bo-Ren Sheng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Juan Shi
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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Bown L, Hirota R, Goettge MN, Cui J, Krist DT, Zhu L, Giurgiu C, van der Donk WA, Ju KS, Metcalf WW. A Novel Pathway for Biosynthesis of the Herbicidal Phosphonate Natural Product Phosphonothrixin Is Widespread in Actinobacteria. J Bacteriol 2023; 205:e0048522. [PMID: 37074199 PMCID: PMC10210982 DOI: 10.1128/jb.00485-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/23/2023] [Indexed: 04/20/2023] Open
Abstract
Phosphonothrixin is an herbicidal phosphonate natural product with an unusual, branched carbon skeleton. Bioinformatic analyses of the ftx gene cluster, which is responsible for synthesis of the compound, suggest that early steps of the biosynthetic pathway, up to production of the intermediate 2,3-dihydroxypropylphosphonic acid (DHPPA) are identical to those of the unrelated phosphonate natural product valinophos. This conclusion was strongly supported by the observation of biosynthetic intermediates from the shared pathway in spent media from two phosphonothrixin producing strains. Biochemical characterization of ftx-encoded proteins confirmed these early steps, as well as subsequent steps involving the oxidation of DHPPA to 3-hydroxy-2-oxopropylphosphonate and its conversion to phosphonothrixin by the combined action of an unusual heterodimeric, thiamine-pyrophosphate (TPP)-dependent ketotransferase and a TPP-dependent acetolactate synthase. The frequent observation of ftx-like gene clusters within actinobacteria suggests that production of compounds related to phosphonothrixin is common within these bacteria. IMPORTANCE Phosphonic acid natural products, such as phosphonothrixin, have great potential for biomedical and agricultural applications; however, discovery and development of these compounds requires detailed knowledge of the metabolism involved in their biosynthesis. The studies reported here reveal the biochemical pathway phosphonothrixin production, which enhances our ability to design strains that overproduce this potentially useful herbicide. This knowledge also improves our ability to predict the products of related biosynthetic gene clusters and the functions of homologous enzymes.
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Affiliation(s)
- Luke Bown
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Ryuichi Hirota
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima City, Hiroshima, Japan
| | - Michelle N. Goettge
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Jerry Cui
- Department of Microbiology, The Ohio State University, Columbus, Ohio, USA
| | - David T. Krist
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Lingyang Zhu
- Department of Chemistry and the Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Constantin Giurgiu
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Wilfred A. van der Donk
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Chemistry and the Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Kou-San Ju
- Department of Microbiology, The Ohio State University, Columbus, Ohio, USA
- Division of Medicinal Chemistry and Pharmacognosy, The Ohio State University, Columbus, Ohio, USA
- Infectious Diseases Institute, The Ohio State University, Columbus, Ohio, USA
- Center for Applied Plant Sciences, The Ohio State University, Columbus, Ohio, USA
| | - William W. Metcalf
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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12
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Hickman DT, Comont D, Rasmussen A, Birkett MA. Novel and holistic approaches are required to realize allelopathic potential for weed management. Ecol Evol 2023; 13:e10018. [PMID: 37091561 PMCID: PMC10121234 DOI: 10.1002/ece3.10018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/20/2023] [Accepted: 04/04/2023] [Indexed: 04/25/2023] Open
Abstract
Allelopathy, that is, plant-plant inhibition via the release of secondary metabolites into the environment, has potential for the management of weeds by circumventing herbicide resistance. However, mechanisms underpinning allelopathy are notoriously difficult to elucidate, hindering real-world application either in the form of commercial bioherbicides or allelopathic crops. Such limited application is exemplified by evidence of limited knowledge of the potential benefits of allelopathy among end users. Here, we examine potential applications of this phenomenon, paying attention to novel approaches and influential factors requiring greater consideration, with the intention of improving the reputation and uptake of allelopathy. Avenues to facilitate more effective allelochemical discovery are also considered, with a view to stimulating the identification of new compounds and allelopathic species. Synthesis and Applications: We conclude that tackling increasing weed pressure on agricultural productivity would benefit from greater integration of the phenomenon of allelopathy, which in turn would be greatly served by a multi-disciplinary and exhaustive approach, not just through more effective isolation of the interactions involved, but also through greater consideration of factors which may influence them in the field, facilitating optimization of their benefits for weed management.
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Affiliation(s)
- Darwin T. Hickman
- Protecting Crops and the EnvironmentRothamsted ResearchHarpendenUK
- School of BiosciencesUniversity of NottinghamSutton BoningtonUK
| | - David Comont
- Protecting Crops and the EnvironmentRothamsted ResearchHarpendenUK
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13
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Espinosa-Colín M, Hernandez-Caballero I, Infante C, Gago I, García-Muñoz J, Sosa T. Evaluation of Propiophenone, 4-Methylacetophenone and 2',4'-Dimethylacetophenone as Phytotoxic Compounds of Labdanum Oil from Cistus ladanifer L. PLANTS (BASEL, SWITZERLAND) 2023; 12:1187. [PMID: 36904046 PMCID: PMC10006901 DOI: 10.3390/plants12051187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
This is the first study to evaluate the phytotoxic activity of three phenolic compounds present in the essential oil of the labdanum of Cistus ladanifer, an allelopathic species of the Mediterranean ecosystem. Propiophenone, 4'-methylacetophenone, and 2',4'-dimethylacetophenone slightly inhibit total germination and radicle growth of Lactuca sativa, and they strongly delay germination and reduce hypocotyl size. On the other hand, the inhibition effect of these compounds on Allium cepa was stronger on total germination than on germination rate, and radicle length compared to hypocotyl size. The position and number of methyl groups will affect the efficacy of the derivative. 2',4'-dimethylacetophenone was the most phytotoxic compound. The activity of the compounds depended on their concentration and presented hormetic effects. In L. sativa, on paper, propiophenone presented greater inhibition of hypocotyl size at greater concentrations, with IC50 = 0.1 mM, whereas 4'-methylacetophenone obtained IC50 = 0.4 mM for germination rate. When the mixture of the three compounds was applied, in L. sativa, on paper, the inhibition effect on total germination and the germination rate was significantly greater compared to the effect of the compounds when they were applied separately; moreover, the mixture inhibited radicle growth, whereas propiophenone and 4'-methylacetophenone did not exert such effect when applied separately. The activity of the pure compounds and that of the mixture also changed based on the substrate used. When the trial was conducted in soil, the separate compounds delayed the germination of the A. cepa to a greater extent compared to the trial on paper, although they stimulated seedling growth. In soil, L. sativa against 4'-methylacetophenone also showed the opposite effect at low concentrations (0.1 mM), with stimulation of germination rate, whereas propiophenone and 4'-methylacetophenone presented a slightly increased effect.
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Affiliation(s)
- María Espinosa-Colín
- Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, Spain
| | - Irene Hernandez-Caballero
- Department of Anatomy, Cellular Biology and Zoology, Faculty of Science, University of Extremadura, 06006 Badajoz, Spain
| | - Celia Infante
- Department of Forest Resources Technology, Center for Scientific and Technological Research of Extremadura (CICYTEX), 06187 Badajoz, Spain
| | - Irene Gago
- Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, Spain
| | - Javier García-Muñoz
- Toxicology Unit, Faculty of Veterinary Medicine, University of Extremadura, 06006 Badajoz, Spain
| | - Teresa Sosa
- Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, Spain
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14
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Amato G, Caputo L, Francolino R, Martino M, De Feo V, De Martino L. Origanum heracleoticum Essential Oils: Chemical Composition, Phytotoxic and Alpha-Amylase Inhibitory Activities. PLANTS (BASEL, SWITZERLAND) 2023; 12:866. [PMID: 36840214 PMCID: PMC9959193 DOI: 10.3390/plants12040866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Many studies have demonstrated the herbicidal effects of several essential oils and their possible use as substitutes for chemical herbicides. Several enzymes play a very significant role in seed germination: among these, α-amylase could be involved in essential oil phytotoxic processes. The aims of this study were to compare the chemical composition of the essential oils of two ecotypes of O. heracleoticum growing in Cilento (Southern Italy) and to study their possible use as natural herbicide using Raphanus sativus, Sinapis arvensis and Lolium multiflorum seeds. Moreover, a possible inhibitory activity on the α-amylase enzyme extracted from germinating seeds was evaluated as a possible mechanism of action. Both oils, characterized by GC-MS, belonged to a carvacrol chemotype. The alpha-amylase activity was determined using DNSA (dinitrosalicylic acid) assay quantifying the reducing sugar produced. Furthermore, the essential oils demonstrated phytotoxicity at the highest dose tested, and an inhibitory effect on α-amylase, probably correlated with the phytotoxic effects, was registered. The oils showed interesting phytotoxic and alpha-amylase inhibitory activities, which deserve to be further investigated.
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15
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Li D, Bi X, Ma J, Zhang X, Jiang K, Zhu X, Huang J, Zhou L. Natural herbicidal alkaloid berberine regulates the expression of thalianol and marneral gene clusters in Arabidopsis thaliana. PEST MANAGEMENT SCIENCE 2022; 78:2896-2908. [PMID: 35415871 DOI: 10.1002/ps.6914] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/17/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Berberine is a plant-derived herbicidal alkaloid. The herbicidal mechanism of berberine is still not clear. In this study, our aim is to clarify the mechanism of berberine inhibiting the root growth of Arabidopsis thaliana, aiming at providing new insight into identifying the molecular targets of berberine. RESULTS The whole-genome RNA sequencing had revealed that 403 genes were down-regulated, and 422 genes were up-regulated in Arabidopsis roots with berberine treatment. According to KEGG and GO analysis, the expression of two genes AT5G48010 (Thas) and AT5G42600 (MRN1) which are in the sesquiterpenoid and triterpenoid biosynthesis pathway were affected most. These two genes belong to thalianol and marneral gene clusters. RT-PCR showed that Arabidopsis responds to berberine by inhibiting root growth through repressing the expression of thalianol and marneral gene clusters, which was independent of the upstream effectors ARP6 and HTA9-1. GC-MS analysis showed that berberine could inhibit THAH in the biosynthetic network of triterpenoid gene cluster in Arabidopsis and thus cause the accumulation of thalianol. CONCLUSION Our study indicated the repression of the thalianol and marneral gene clusters as the primary mechanism of action of berberine in Arabidopsis, which may result in plant growth defects by interrupting the thalianol metabolic pathway. This provides novel clues as to the possible molecular herbicidal mechanism of berberine. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Dandan Li
- Key Lab of Natural Pesticides & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Xiaoyang Bi
- Key Lab of Natural Pesticides & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Jingjing Ma
- Key Lab of Natural Pesticides & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Xiaohong Zhang
- Key Lab of Natural Pesticides & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Keni Jiang
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Xuezhen Zhu
- Key Lab of Natural Pesticides & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Jiguang Huang
- Key Lab of Natural Pesticides & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Lijuan Zhou
- Key Lab of Natural Pesticides & Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
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16
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Zhang H, Wang J, Chen Y, Xu S, Duan W, Jiang J, Zhao Z. Turpentine‐Derived
sec
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p
‐Menthane‐1‐amine Derivatives: Synthesis, Herbicidal Activity, and 3D‐QSAR Study. ChemistrySelect 2022. [DOI: 10.1002/slct.202200618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hongmei Zhang
- National Engineering Lab. for Biomass Chemical Utilization Key Lab. of Chemical Engineering of Forest Products National Forestry and Grassland Administration Key Lab. of Biomass Energy and Material Jiangsu Province Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Institute of Chemical Industry of Forest Products Chinese Academy of Forestry Nanjing 210042 P. R. China
- College of Materials Science and Technology Beijing Forestry University Beijing 100083 P. R. China
| | - Jing Wang
- National Engineering Lab. for Biomass Chemical Utilization Key Lab. of Chemical Engineering of Forest Products National Forestry and Grassland Administration Key Lab. of Biomass Energy and Material Jiangsu Province Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Institute of Chemical Industry of Forest Products Chinese Academy of Forestry Nanjing 210042 P. R. China
- College of Materials Science and Technology Beijing Forestry University Beijing 100083 P. R. China
| | - Yuxiang Chen
- National Engineering Lab. for Biomass Chemical Utilization Key Lab. of Chemical Engineering of Forest Products National Forestry and Grassland Administration Key Lab. of Biomass Energy and Material Jiangsu Province Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Institute of Chemical Industry of Forest Products Chinese Academy of Forestry Nanjing 210042 P. R. China
| | - Shichao Xu
- National Engineering Lab. for Biomass Chemical Utilization Key Lab. of Chemical Engineering of Forest Products National Forestry and Grassland Administration Key Lab. of Biomass Energy and Material Jiangsu Province Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Institute of Chemical Industry of Forest Products Chinese Academy of Forestry Nanjing 210042 P. R. China
| | - Wengui Duan
- School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 P. R. China
| | - Jianxin Jiang
- College of Materials Science and Technology Beijing Forestry University Beijing 100083 P. R. China
| | - Zhendong Zhao
- National Engineering Lab. for Biomass Chemical Utilization Key Lab. of Chemical Engineering of Forest Products National Forestry and Grassland Administration Key Lab. of Biomass Energy and Material Jiangsu Province Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Institute of Chemical Industry of Forest Products Chinese Academy of Forestry Nanjing 210042 P. R. China
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17
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Appiah KS, Omari RA, Onwona-Agyeman S, Amoatey CA, Ofosu-Anim J, Smaoui A, Arfa AB, Suzuki Y, Oikawa Y, Okazaki S, Katsura K, Isoda H, Kawada K, Fujii Y. Seasonal Changes in the Plant Growth-Inhibitory Effects of Rosemary Leaves on Lettuce Seedlings. PLANTS (BASEL, SWITZERLAND) 2022; 11:673. [PMID: 35270143 PMCID: PMC8912698 DOI: 10.3390/plants11050673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Plant biodiversity has been studied to explore allelopathic species for the sustainable management of weeds to reduce the reliance on synthetic herbicides. Rosemary (Rosmarinus officinalis L., syn Salvia rosmarinus Spenn.), was found to have plant growth-inhibitory effects, and carnosic acid was reported as an allelochemical in the plant. In this study, the effects of seasonal variation (2011−2012) on the carnosic acid concentration and phytotoxicity of rosemary leaves from two locations in Tunisia (Fahs and Matmata) were investigated. The carnosic acid concentration in rosemary leaves was determined by HPLC, and lettuce (Lactuca sativa L.) was used as the receptor plant in the phytotoxicity bioassay. The highest carnosic acid concentration was found in rosemary samples collected in June 2011, which also had the highest inhibitory activity. Furthermore, a significant inverse correlation (r = −0.529; p < 0.01) was found between the inhibitory activity on lettuce hypocotyl and the carnosic acid concentration in rosemary leaves. Both temperature and elevation had a significant positive correlation with carnosic acid concentration, while rainfall showed a negative correlation. The results showed that the inhibitory effects of rosemary leaf samples collected in summer was highest due to their high carnosic acid concentration. The phytotoxicity of rosemary needs to be studied over time to determine if it varies by season under field conditions.
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Affiliation(s)
- Kwame Sarpong Appiah
- Department of International Innovative Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Tokyo, Japan; (Y.O.); (S.O.); (K.K.); (Y.F.)
- Department of Crop Science, College of Basic and Applied Science, University of Ghana, Legon, Accra P.O. Box LG 44, Ghana;
| | - Richard Ansong Omari
- Leibniz Centre for Agricultural Landscape Research, Institute of Land Use Systems, Eberswalder Str. 84, 15374 Muencheberg, Germany;
- Institute of Agriculture and Horticulture, Faculty of Life Science, Humboldt-University of Berlin, Albrecht-Thaer-Weg 5, 14195 Berlin, Germany
| | - Siaw Onwona-Agyeman
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Tokyo, Japan;
| | - Christiana Adukwei Amoatey
- Department of Crop Science, College of Basic and Applied Science, University of Ghana, Legon, Accra P.O. Box LG 44, Ghana;
| | - John Ofosu-Anim
- School of Architecture and Science, Central University, Tema P.O. Box 2305, Ghana;
| | - Abderrazak Smaoui
- Centre of Biotechnology of Borj Cédria, BP 901 Hammam-Lif, Borj Cedria 2025, Tunisia;
| | - Abdelkarim Ben Arfa
- L’Institut des Régions Arides, Route du Djorf Km 22.5, Médenine 4119, Tunisia;
| | - Yoko Suzuki
- Aromatic Repos, AHOLA, A2 Soleil Jiyugaoka, 1-21-3, Jiyugaoka, Meguro 152-0035, Tokyo, Japan;
| | - Yosei Oikawa
- Department of International Innovative Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Tokyo, Japan; (Y.O.); (S.O.); (K.K.); (Y.F.)
| | - Shin Okazaki
- Department of International Innovative Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Tokyo, Japan; (Y.O.); (S.O.); (K.K.); (Y.F.)
| | - Keisuke Katsura
- Department of International Innovative Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Tokyo, Japan; (Y.O.); (S.O.); (K.K.); (Y.F.)
| | - Hiroko Isoda
- School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8572, Ibaraki, Japan;
| | - Kiyokazu Kawada
- School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8572, Ibaraki, Japan;
| | - Yoshiharu Fujii
- Department of International Innovative Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Tokyo, Japan; (Y.O.); (S.O.); (K.K.); (Y.F.)
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18
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McCoy RM, Widhalm JR, McNickle GG. Allelopathy as an evolutionary game. PLANT DIRECT 2022; 6:e382. [PMID: 35169675 PMCID: PMC8832168 DOI: 10.1002/pld3.382] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/21/2021] [Accepted: 01/11/2022] [Indexed: 05/30/2023]
Abstract
In plants, most competition is resource competition, where one plant simply preempts the resources away from its neighbors. Interference competition, as the name implies, is a form of direct interference to prevent resource access. Interference competition is common among animals that can physically fight, but in plants, one of the main mechanisms of interference competition is allelopathy. Allelopathic plants release cytotoxic chemicals into the environment which can increase their ability to compete with surrounding organisms for limited resources. The circumstances and conditions favoring the development and maintenance of allelochemicals, however, are not well understood. Particularly, despite the obvious benefits of allelopathy, current data suggest it seems to have only rarely evolved. To gain insight into the cost and benefit of allelopathy, we have developed a 2 × 2 matrix game to model the interaction between plants that produce allelochemicals and plants that do not. Production of an allelochemical introduces novel cost associated with both synthesis and detoxifying a toxic chemical but may also convey a competitive advantage. A plant that does not produce an allelochemical will suffer the cost of encountering one. Our model predicts three cases in which the evolutionarily stable strategies are different. In the first, the nonallelopathic plant is a stronger competitor, and not producing allelochemicals is the evolutionarily stable strategy. In the second, the allelopathic plant is the better competitor, and production of allelochemicals is the more beneficial strategy. In the last case, neither is the evolutionarily stable strategy. Instead, there are alternating stable states, depending on whether the allelopathic or nonallelopathic plant arrived first. The generated model reveals circumstances leading to the evolution of allelochemicals and sheds light on utilizing allelochemicals as part of weed management strategies. In particular, the wide region of alternative stable states in most parameterizations, combined with the fact that the absence of allelopathy is likely the ancestral state, provides an elegant answer to the question of why allelopathy seems to rarely evolve despite its obvious benefits. Allelopathic plants can indeed outcompete nonallelopathic plants, but this benefit is simply not great enough to allow them to go to fixation and spread through the population. Thus, most populations would remain purely nonallelopathic.
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Affiliation(s)
- Rachel M. McCoy
- Purdue Center for Plant BiologyPurdue UniversityWest LafayetteINUSA
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteINUSA
| | - Joshua R. Widhalm
- Purdue Center for Plant BiologyPurdue UniversityWest LafayetteINUSA
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteINUSA
| | - Gordon G. McNickle
- Purdue Center for Plant BiologyPurdue UniversityWest LafayetteINUSA
- Department of Botany and Plant PathologyPurdue UniversityWest LafayetteINUSA
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19
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Liu Z, Khan MM, Fajar A, Chen S, Guo M, Chen Y, Yang C, Wu J, Qiu B, Zhou X, Pan H. Toxicity of fluralaner against vegetable pests and its sublethal impact on a biocontrol predatory ladybeetle. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 225:112743. [PMID: 34481350 DOI: 10.1016/j.ecoenv.2021.112743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/19/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
Fluralaner, a systemic pesticide, was originally registered with the US Food and Drug Administration in 2014 under the trade name Bravecto for flea treatment for pets. As a GABA antagonist, the footprint of fluralaner has expended beyond medical and veterinary pests in recent years. In this study, we examined the acute toxicity of fluralaner against three pests of Henosepilachna vigintioctopunctata, Megalurothrips usitatus, and Phyllotreta striolata in the Solanaceae, Fabaceae, and Cruciferae families, respectively, and the sublethal impact of fluralaner on Propylaea japonica, a widely distributed predatory ladybeetle. Based on LC50, fluralaner was effective against H. vigintioctopunctata (0.098 mg a.i. L-1 for the second instar larvae), M. usitatus (0.134 mg a.i. L-1 for adult females), and P. striolata (0.595 mg a.i. L-1 for adults). For P. japonica, however, fluralaner was substantially less effective (1.177 mg a.i. L-1 for the third instar larvae). Furthermore, the LC10 and LC30 of P. japonica were also consistently higher than the LC50 of the three pests. In addition, we did not observe any significant impacts of fluralaner at LC10 and LC30 on the life history traits, including body weight, developmental time, pre-oviposition period, and fecundity of P. japonica. Based on our results from acute toxicities and sublethal impacts, fluralaner is effective against vegetable pests, while potentially friendly to P. japonica when employed as a biological control agent.
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Affiliation(s)
- Zhuoqi Liu
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
| | - Muhammad Musa Khan
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
| | - Anugerah Fajar
- Department of Entomology, University of Kentucky, Lexington, KY 40546, USA; Research Center for Biomaterials, Indonesia Institute of Sciences, Jl. Raya Bogor km. 46, Cibinong, Bogor 16911, West Java, Indonesia
| | - Shimin Chen
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
| | - Mujuan Guo
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
| | - Yueyin Chen
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
| | - Chunxiao Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Jianhui Wu
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
| | - Baoli Qiu
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky, Lexington, KY 40546, USA.
| | - Huipeng Pan
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Guangzhou 510642, China.
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Küçükaslan H, Usta A, Uluşahin M, Ercin ME, Patan H, Vanizor Kural B, Alhan E. Effects of L-Theanine on Hepatic Ischemia-Reperfusion Injury in Rats. EXP CLIN TRANSPLANT 2021. [PMID: 34763627 DOI: 10.6002/ect.2021.0290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES The effects of L-theanine on hepatic microcirculation during hepatic ischemia-reperfusion injury have not yet been investigated. The aim of this study was to investigate the influence of L-theanine on hepatic ischemia-reperfusion injury in rats. MATERIALS AND METHODS Thirty-two male Sprague Dawley rats weighing 250 to 300 g were used. Rats were divided into 4 groups: sham + saline, sham + L-theanine, hepatic ischemia-reperfusion injury + saline, and hepatic ischemia-reperfusion injury + L-theanine. Hepatic ischemia-reperfusion injury in rats was induced by 60 minutes of 70% ischemia and 4 hours of reperfusion. The extent of hepatic cell injury, functional capillary density, hepatic functions, and changes in some enzyme markers in hepatic tissue were investigated in the 4 groups. RESULTS The induction of hepatic ischemia-reperfusion injury resulted in significant increases in hepatic necrosis; serum activity of alanine aminotransferase, lactate dehydrogenase, gamma-glutamyltransferase, and tumor necrosis factor alpha; tissue activity of inducible nitric oxide synthase, myeloperoxidase, and malondialdehyde, and oxide glutathione; and H score for hypoxia-inducible factor 1-alpha in the liver. In the liver, there were significant reductions in reduced glutathione, ratio of reduced glutathione-to-oxide glutathione, and functional capillary density. The use of L-theanine improved these changes. CONCLUSIONS L-theanine demonstrated protective effects on hepatic injury after ischemia-reperfusion injury in rats. However, new studies are needed to confirm the preventive or reducing effects of L-theanine on hepatic ischemia-reperfusion injury.
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Affiliation(s)
- Hakan Küçükaslan
- From the Karadeniz Technical University, Faculty of Medicine, Department of General Surgery, Farabi Hospital, Trabzon, Turkey
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21
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Krain A, Siupka P. Fungal Guttation, a Source of Bioactive Compounds, and Its Ecological Role-A Review. Biomolecules 2021; 11:biom11091270. [PMID: 34572483 PMCID: PMC8467351 DOI: 10.3390/biom11091270] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/13/2021] [Accepted: 08/19/2021] [Indexed: 11/16/2022] Open
Abstract
Guttation is a common phenomenon in the fungal kingdom. Its occurrence and intensity depend largely on culture conditions, such as growth medium composition or incubation temperature. As filamentous fungi are a rich source of compounds, possessing various biological activities, guttation exudates could also contain bioactive substances. Among such molecules, researchers have already found numerous mycotoxins, antimicrobials, insecticides, bioherbicides, antiviral, and anticancer agents in exudate droplets. They belong to either secondary metabolites (SMs) or proteins and are secreted with different intensities. The background of guttation, in terms of its biological role, in vivo, and promoting factors, has been explored only partially. In this review, we describe the metabolites present in fungal exudates, their diversity, and bioactivities. Pointing to the significance of fungal ecology and natural products discovery, selected aspects of guttation in the fungi are discussed.
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22
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Poonpaiboonpipat T, Krumsri R, Kato-Noguchi H. Allelopathic and Herbicidal Effects of Crude Extract from Chromolaena odorata (L.) R.M.King and H.Rob. on Echinochloa crus-galli and Amaranthus viridis. PLANTS 2021; 10:plants10081609. [PMID: 34451653 PMCID: PMC8401274 DOI: 10.3390/plants10081609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 07/29/2021] [Accepted: 08/03/2021] [Indexed: 11/20/2022]
Abstract
The present study was aimed at investigating the allelopathic effects of a crude extract from Chromolaena odorata (L.) R.M.King and H.Rob. (Siam weed). The effects of 70% crude ethanol extract from the whole plant, leaf, stem, and root on the germination and growth of Echinochloa crus-galli and Amaranthus viridis seedlings were evaluated using Petri-dish tests under laboratory conditions. Crude extracts from the leaf showed the highest inhibitory activity. The leaf extract (OR) was further separated by sequential solvent extraction to provide hexane (HX), ethyl acetate (ET), and butanol (BU) fractions, which were also evaluated using Petri-dish tests. The hexane fraction was significantly the most active; therefore, it was selected for formulation in a concentrated suspension and tested for its herbicidal characteristics. The formulation showed greater early post-emergence than post- and pre-emergence activities, respectively. The physiological mechanism of the formulation was tested against E. crus-galli and showed that chlorophyll a and b and the carotenoid contents of the leaf dramatically decreased when the concentration was increased, suggesting its ability to disrupt the process of photosynthesis. As thiobarbituric acid reactive substances also occurred in the leaf of E. crus-galli, this suggests lipid peroxidation and cell disruption. These results represent the possibility that C. odorata extract contains inhibitory compounds with herbicidal activity and could be used as an early post-emergence herbicide for weed control.
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Affiliation(s)
- Thanatsan Poonpaiboonpipat
- Department of Agricultural Science, Faculty of Natural Resources and Environment, Naresuan University, Phitsanulok 65000, Thailand
- Correspondence:
| | - Ramida Krumsri
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki 761-0795, Kagawa, Japan; (R.K.); (H.K.-N.)
| | - Hisashi Kato-Noguchi
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki 761-0795, Kagawa, Japan; (R.K.); (H.K.-N.)
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23
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Comprehensive machine learning based study of the chemical space of herbicides. Sci Rep 2021; 11:11479. [PMID: 34075109 PMCID: PMC8169684 DOI: 10.1038/s41598-021-90690-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 05/17/2021] [Indexed: 11/23/2022] Open
Abstract
Widespread use of herbicides results in the global increase in weed resistance. The rotational use of herbicides according to their modes of action (MoAs) and discovery of novel phytotoxic molecules are the two strategies used against the weed resistance. Herein, Random Forest modeling was used to build predictive models and establish comprehensive characterization of structure–activity relationships underlying herbicide classifications according to their MoAs and weed selectivity. By combining the predictive models with herbicide-likeness rules defined by selected molecular features (numbers of H-bond acceptors and donors, logP, topological and relative polar surface area, and net charge), the virtual stepwise screening platform is proposed for characterization of small weight molecules for their phytotoxic properties. The screening cascade was applied on the data set of phytotoxic natural products. The obtained results may be valuable for refinement of herbicide rotational program as well as for discovery of novel herbicides primarily among natural products as a source for molecules of novel structures and novel modes of action and translocation profiles as compared with the synthetic compounds.
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Han C, Shao H, Zhou S, Mei Y, Cheng Z, Huang L, Lv G. Chemical composition and phytotoxicity of essential oil from invasive plant, Ambrosia artemisiifolia L. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111879. [PMID: 33465625 DOI: 10.1016/j.ecoenv.2020.111879] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/23/2020] [Accepted: 12/26/2020] [Indexed: 05/23/2023]
Abstract
Essential oils have been evaluated as appropriate phytotoxins with mechanisms of action that are different from those of synthetic herbicides applied in weed management activities, but little is known about the effect of Ambrosia artemisiifolia essential oil (EO) on weeds. Here, the chemical composition of A. artemisiifolia EO was analyzed using a Gas Chromatography-Mass Spectrometry system. and the phytotoxic activities of the EO against monocot (Poa annua, Setaria viridis) and dicot (Amaranthus retroflexus, Medicago sativa) species are evaluated under laboratory and green-house conditions for the first time. The EO was rich in sesquiterpenes (62.51%), with germacrene D (32.92%), β-pinene (15.14%), limonene (9.90%), and caryophyllene (4.49%) being the major compounds based on Gas Chromatography-Mass Spectrometry analysis results. A. artemisiifolia EO inhibited seed germination and seedling development significantly in the tested species even at low concentrations (0.25 mg mL-1). In addition, bioassay results for the activities of superoxide dismutase (SOD) and peroxidase (POD) increased and then decreased with an increase in EO concentration. Unlike the enzymatic activity, root cell viability declined significantly in the tested weeds in all EO treatments. Besides, a foliar spray experiment resulted in visible injury in leaves and a decrease in chlorophyll content and eventually led to wilting of all tested weeds. The EO (0.25-5.00 mg mL-1) altered Allium cepa root tip cells with a decline in mitotic index and an increase in chromosomal aberrations after 24 h treatment. The cytotoxic evaluation confirmed the mitotic inhibitory effect of EO, although the intensity varied under different concentrations. According to the results, A. artemisiifolia EO has the potential applications as a natural herbicide owing to its phytotoxic activity; which also helps to explain their potential involvement in allelopathic interaction of volatile compounds present in the EO that facilitate the invasion success of the exotic species.
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Affiliation(s)
- Caixia Han
- Xinjiang University, Resource and Environment Science College, Urumqi 830046, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Hua Shao
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; Research Center for Ecology and Environment of Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Shixing Zhou
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Yu Mei
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Zhenrui Cheng
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Ling Huang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Guanghui Lv
- Xinjiang University, Resource and Environment Science College, Urumqi 830046, China.
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Hussain MI, Reigosa MJ. Secondary Metabolites, Ferulic Acid and p-Hydroxybenzoic Acid Induced Toxic Effects on Photosynthetic Process in Rumex acetosa L. Biomolecules 2021; 11:biom11020233. [PMID: 33562880 PMCID: PMC7915730 DOI: 10.3390/biom11020233] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 01/30/2021] [Accepted: 02/02/2021] [Indexed: 11/26/2022] Open
Abstract
The elimination of broadleaf weeds from agricultural fields has become an urgent task in plant and environment protection. Allelopathic control is considered a potential approach because of its exclusive and ecological safety measures. Plant secondary metabolites also called allelochemicals are released from plant leaves, roots, stem, bark, flowers and play significant roles in soil rhizosphere signaling, chemical ecology, and plant defense. The present study was carried out to evaluate the impact of two allelochemicals; ferulic acid (FA) and p-hydroxybenzoic acid (pHBA) on photosynthetic characteristics; Fv/Fm: efficiency of photosystem II photochemistry in the dark-adapted state; ΦPSII: photosynthetic quantum yield; NPQ, non-photochemical quenching; qP, photochemical quenching, and photon energy dissipation (1−qP)/NPQ in Rumex acetosa following 6 days exposure. R. acetosa seedlings were grown in perlite culture, irrigated with Hoagland solution and treated with allelopathic compounds FA and pHBA and were evaluated against the photosynthetic attributes. Both compounds behaved as potent inhibitors of photosynthetic traits such as Fv/Fm, ΦPSII, qP, and NPQ in R. acetosa. Photon energy dissipation (1−qP)/NPQ increased significantly from days 3 to 6. Higher dissipation of absorbed energy indicates the inactivation state of reaction centers and their inability to effectively use the absorbed energy in photosynthesis. These results indicated the potential allelopathic application of FA and pHBA for control of broadleaf weed, Rumex acetosa.
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Affiliation(s)
- M. Iftikhar Hussain
- Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain;
- CITACA, Agri-Food Research and Transfer Cluster, Campus da Auga, University of Vigo, 32004 Ourense, Spain
- Correspondence:
| | - Manuel J. Reigosa
- Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain;
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Gámiz B, López-Cabeza R, Velarde P, Spokas KA, Cox L. Biochar changes the bioavailability and bioefficacy of the allelochemical coumarin in agricultural soils. PEST MANAGEMENT SCIENCE 2021; 77:834-843. [PMID: 32926587 DOI: 10.1002/ps.6086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/26/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Allelochemicals can act as biopesticides or enhance the action of synthetic pesticides. In this work, we assessed the bioavailability of the allelochemical coumarin in soils amended with fresh or field-aged biochars (BCs). The fresh BC from oak wood (Fresh BC) was prepared at 550 °C and was buried for aging in two different places: in a sandy loam soil in Spain for 15 months (Aged BC_1) and a sandy loam soil in USA for six months (Aged BC_2). RESULTS Sorption experiments showed that all BCs were able to increase the affinity of soil towards coumarin, with the distribution coefficient following the order: unamended soil < Aged BC_2-amended soil < Aged BC_1-amended soil < Fresh BC-amended soil. All biochars ensure greater persistence of coumarin and the effect was more pronounced at high chemical dose (10 mg kg-1 ). Conversely, leaching studies in soil columns revealed that BCs were able to maintain coumarin within the first 5 cm of top-soil with total amount extracted ranging between 17% and 22% for BC-amended soil and <1% for unamended soil. Leaching was only observed when coumarin was added at the highest rate. Likewise, the bioefficacy of coumarin against lettuce was enhanced only at 10 kg ha-1 with BC-amended soil. CONCLUSIONS Biochar application to agricultural soils is a promising tool for the management of natural compounds with potential use as biopesticides, such as coumarin, because it increases sorption, persistence and, in some cases, bioefficacy. The results reveal that this effect still persists with aging of BC in soils.
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Affiliation(s)
- Beatriz Gámiz
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Avenida Reina Mercedes 10, Sevilla, Spain
| | - Rocío López-Cabeza
- Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Pilar Velarde
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Avenida Reina Mercedes 10, Sevilla, Spain
| | - Kurt A Spokas
- U.S. Department of Agriculture, Agricultural Research Service, St Paul, MN, USA
| | - Lucía Cox
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Avenida Reina Mercedes 10, Sevilla, Spain
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Lee JY, Park H, Lim W, Song G. Benfuresate induces developmental toxicity in zebrafish larvae by generating apoptosis and pathological modifications. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 172:104751. [PMID: 33518044 DOI: 10.1016/j.pestbp.2020.104751] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 10/19/2020] [Accepted: 11/12/2020] [Indexed: 05/21/2023]
Abstract
Benfuresate (2,3-dihydro-3,3-dimethylbenzofuran-5-yl ethanesulphonate) is a widely used pre-emergence herbicide of the benzofurane group, which works through the inhibition of lipid synthesis. During embryonic development of zebrafish, benfuresate retards growth while causing internal changes in the body, including alteration of the expression of cell cycle regulators, induction of apoptosis, and suppression of the circulatory system. Acute toxicity towards benfuresate is seen across the range of 5-15 μM in a dose-dependent manner and contributes to pathological conditions and subsequent morphological changes. For embryos 120 h post fertilization (hpf), benfuresate exposure results in an array of malformations involving eye or otolith development, pericardial edema, yolk sac edema, and abnormal curvature of the spine. Mechanistically, benfuresate exposure altered the transcription levels of the proliferative pathway genes ccnd1, ccne1, cdk2, and cdk6, all of which sensitize cells to apoptosis. Benfuresate exposure also affected vascular formation, including the formation of various vessels (DA, SIVs, CA, CV) whose functions in lymphatic-blood circulation were disrupted following decreased vegfaa, vegfc, flt1, flt4, and kdrl expression. These findings provide evidence of embryo-larval toxicity due to benfuresate and highlight the perils of herbicide exposure for non-target organisms far removed from application sites, especially in aquatic environments.
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Affiliation(s)
- Jin-Young Lee
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Hahyun Park
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Whasun Lim
- Department of Food and Nutrition, Kookmin University, Seoul 02707, Republic of Korea.
| | - Gwonhwa Song
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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Dubovik V, Dalinova A, Berestetskiy A. Effect of Adjuvants on Herbicidal Activity and Selectivity of Three Phytotoxins Produced by the Fungus, Stagonospora cirsii. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1621. [PMID: 33233474 PMCID: PMC7700206 DOI: 10.3390/plants9111621] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/14/2020] [Accepted: 11/19/2020] [Indexed: 05/15/2023]
Abstract
The use of many fungal phytotoxins as natural herbicides is still limited because they cannot penetrate leaf cuticle without injury and a little is known on their selectivity. In order to assess the herbicidal potential of phytotoxic 10-membered lactones (stagonolide A, stagonolide K, and herbarumin I), the selection of adjuvants, the evaluation of selectivity of the toxins and the efficacy of their formulations were performed. Among four adjuvants tested, Hasten™ (0.1%, v/v) increased phytotoxic activity of all the toxins assayed on non-punctured leaf discs of Sonchus arvensis. When assayed on intact leaf fragments of 18 plants species, 10 species were low to moderately sensitive to stagonolide A, while just five and three species were sensitive to stagonolide K and herbarumin I, respectively. Both leaf damage or addition of Hasten™ (0.1%) to the formulations of the compounds considerably increased or altered the sensitivity of plants to the toxins. Stagonolide A was shown to be non-selective phytotoxin. The selectivity profile of stagonolide K and herbarumin I depended on the leaf wounding or the adjuvant addition. Stagonolide A and herbarumin I formulated in 0.5% Hasten™ showed considerable herbicidal effect on S. arvensis aerial shoots. This study supported the potential of the oil-based adjuvant Hasten™ to increase the herbicidal efficacy of natural phytotoxins.
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Affiliation(s)
| | | | - Alexander Berestetskiy
- All-Russian Institute of Plant Protection, Podbelskogo St., 3, Pushkin, Saint-Petersburg 196608, Russia; (V.D.); (A.D.)
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29
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Zhang J, Shi LY, Yin X, Xu FC, Zhang QY, Tu PF, Liang H. Discovery of novel potential plant growth regulators from Corydalis mucronifera. Fitoterapia 2020; 147:104776. [PMID: 33166598 DOI: 10.1016/j.fitote.2020.104776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/08/2020] [Accepted: 11/02/2020] [Indexed: 12/18/2022]
Abstract
Three pairs of enantiomers mucroniferals A-C (1-3), with a novel skeleton of 1,4-epoxynaphthalene-2,3-dicarboxylic acid first reported from nature source, were isolated from Corydalis mucronifera. Their structures were elucidated based on extensive spectroscopic data analysis of MS, 1D and 2D NMR, and their absolute configurations were confirmed by single-crystal X-ray diffraction analysis and comparison of the experimental and calculated ECD data. Mucroniferals A-C showed broad-spectrum inhibitory activities on seedling growth of all plants tested (Lepidium apetalum, Raphanus sativus, Lactuca sativa, and Arabidopsis thaliana) with a dose-dependent relationship. Additionally, mucroniferals A and B exhibited significant inhibitory effects on germination of most seeds at concentration of 80 μg/mL, and the inhibition was reversible.
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Affiliation(s)
- Jun Zhang
- Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, People's Republic of China
| | - Lun-Yong Shi
- Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, People's Republic of China
| | - Xu Yin
- Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, People's Republic of China
| | - Fu-Chun Xu
- Medical College of Tibet University, Lhasa 850000, People's Republic of China
| | - Qing-Ying Zhang
- Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, People's Republic of China
| | - Peng-Fei Tu
- Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, People's Republic of China
| | - Hong Liang
- Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, People's Republic of China.
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Phytotoxic Activity of the Natural Compound Norharmane on Crops, Weeds and Model Plants. PLANTS 2020; 9:plants9101328. [PMID: 33050191 PMCID: PMC7600911 DOI: 10.3390/plants9101328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/30/2020] [Accepted: 10/04/2020] [Indexed: 12/31/2022]
Abstract
Norharmane is a secondary metabolite that appears in different species of land plants. In this paper, we investigated for the first time the specificity of norharmane through germination and growth tests on some crops as Zea mays L. (maize), Triticum aestivum L. (wheat), Oryza sativa L. (rice) and Lactuca sativa L. (lettuce) and weeds as Amaranthus retroflexus L. (amaranth), Echinochloa crus-galli L. (barnyard grass), Plantago lanceolata L. (ribwort), Portulaca oleracea L. (common purslane) and Avena fatua L. (wild oat), and its phytotoxic capacity on the metabolism of adult Arabidopsis thaliana L. (thale cress) by measuring chlorophyll a fluorescence, pigment content, total proteins, osmotic potential and morphological analysis. Norharmane had an inhibitory effect on the germination of A. fatua and P. lanceolata, and the growth of P. oleracea, E. crus-galli and A. retroflexus. On adult A. thaliana plants, the compound was more effective to watering, leading to water stress that compromised the growth of the plants and ultimately affected the photosynthetic apparatus. Therefore, this research shows that norharmane not only affects seedlings’ metabolism, but also damages the metabolism of adult plants and can be a potential model for a future bioherbicide given its specificity.
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Physiological Approach to the Use of the Natural Compound Quinate in the Control of Sensitive and Resistant Papaver rhoeas. PLANTS 2020; 9:plants9091215. [PMID: 32948013 PMCID: PMC7569983 DOI: 10.3390/plants9091215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/04/2020] [Accepted: 09/14/2020] [Indexed: 11/17/2022]
Abstract
Quinate (1,3,4,5-tetrahydroxycyclohexanecarboxylate) is a compound synthesized in plants through a side-branch of the shikimate biosynthesis pathway, which is accumulated after glyphosate and acetolactate synthase inhibiting herbicides (ALS-inhibitors) and has phytotoxic potential. The objective of this study was to evaluate the phytotoxicity of quinate on several weed species. Among the species evaluated, Cynodon dactylon, Bromus diandrus, Lolium rigidum, Sinapis alba, and Papaver rhoeas, P. rhoeas was the most sensitive, and its growth was controlled with quinate concentrations above 100 mM at the phenological stage of 6–8 true leaves. A physiological study, including the shikimate pathway and the physiological markers of ALS-inhibitors (carbohydrates and amino acids), was performed in the sensitive and resistant plants treated with sulfonylureas or quinate. The typical physiological effects of ALS-inhibitors were detected in the sensitive population (free amino acid and carbohydrate accumulation) and not detected in the resistant population. The mode of action of quinate appeared to be related to general perturbations in their carbon/nitrogen metabolism rather than to specific changes in the shikimate pathway. These results suggest the possibility of using quinate in the weed control management of P. rhoeas.
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Owens DK, Bajsa-Hirschel J, Duke SO, Carbonari CA, Gomes GLGC, Asolkar R, Boddy L, Dayan FE. The Contribution of Romidepsin to the Herbicidal Activity of Burkholderia rinojensis Biopesticide. JOURNAL OF NATURAL PRODUCTS 2020; 83:843-851. [PMID: 32091209 DOI: 10.1021/acs.jnatprod.9b00405] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The culture broth of Burkholderia rinojensis strain A396 is herbicidal to a number of weed species with greater observed efficacy against broadleaf than grass weeds. A portion of this activity is attributed to romidepsin, a 16-membered cyclic depsipeptide bridged by a 15-membered macrocyclic disulfide. Romidepsin, which is present in small amounts in the broth (18 to 25 μg mL-1), was isolated and purified using standard chromatographic techniques. It was established that romidepsin is a natural proherbicide that targets the activity of plant histone deacetylases (HDAC). Assays to measure plant HDAC activity were optimized by testing a number of HDAC substrates. The activity of romidepsin was greater when its macrocyclic-forming disulfide bridge was reduced to liberate a highly reactive free butenyl thiol side chain. Reduction was achieved using 200 mM tris(2-carboxyethyl)phosphine hydrochloride. A similar bioactivation of the proherbicide via reduction of the disulfide bridge of romidepsin was observed in plant-cell-free extracts. Molecular dynamic simulation of the binding of romidepsin to Arabidopsis thaliana HDAC19 indicated the reduced form of the compound could reach deep inside the catalytic domain and interact with an associated zinc atom required for enzyme activity.
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Affiliation(s)
- Daniel K Owens
- Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Joanna Bajsa-Hirschel
- Natural Products Utilization Research Unit, USDA-ARS, Thad Cochran Center, University Avenue, University, Mississippi 38677 United States
| | - Stephen O Duke
- Natural Products Utilization Research Unit, USDA-ARS, Thad Cochran Center, University Avenue, University, Mississippi 38677 United States
| | - Caio A Carbonari
- Faculty of Agronomic Sciences, São Paulo State University, Botucatu, 01049-010, SP, Brazil
| | - Giovanna L G C Gomes
- Faculty of Agronomic Sciences, São Paulo State University, Botucatu, 01049-010, SP, Brazil
| | - Ratnakar Asolkar
- Marrone Bio Innovations, 1540 Drew Avenue, Davis, California 95618, United States
| | - Louis Boddy
- Marrone Bio Innovations, 1540 Drew Avenue, Davis, California 95618, United States
| | - Franck E Dayan
- Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523, United States
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Cynara cardunculus Crude Extract as a Powerful Natural Herbicide and Insight into the Mode of Action of Its Bioactive Molecules. Biomolecules 2020; 10:biom10020209. [PMID: 32023949 PMCID: PMC7072411 DOI: 10.3390/biom10020209] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 02/05/2023] Open
Abstract
The use of chemical herbicides could not only potentially induce negative impacts on the environment, animals, and human health, but also increase the weed resistance to herbicides. In this context, the use of plant extracts could be an interesting and natural alternative to chemical products. It is important to understand the mode of action of their bioactive compounds. This is why we have studied the herbicidal effect of Cynara cardunculus crude extract in terms of inhibition of weeds' seedling growth and its impact on physiological parameters of treated plantlets, like conductivity, dry weight, and fluorescence, and biochemical parameters linked to oxidative stress. We have observed that C. cardunculus crude extract induces oxidative stress in the treated plants and consequently disturbs the physiological and biochemical functions of the plant cells. We have investigated the herbicidal activity of three bioactive compounds, naringenin, myricitrin, and quercetin, from the C. cardunculus crude extract. In both pre- and post-emergence trials, naringenin and myricitrin were significantly more phytotoxic than quercetin. We suggest that their differential initial interaction with the plant's plasma membrane could be one of the main signals for electrolyte leakage and production of high levels of phenoxyl radicals.
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Gruľová D, Caputo L, Elshafie HS, Baranová B, De Martino L, Sedlák V, Gogaľová Z, Poráčová J, Camele I, De Feo V. Thymol Chemotype Origanum vulgare L. Essential Oil as a Potential Selective Bio-Based Herbicide on Monocot Plant Species. Molecules 2020; 25:molecules25030595. [PMID: 32013272 PMCID: PMC7037002 DOI: 10.3390/molecules25030595] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/20/2020] [Accepted: 01/27/2020] [Indexed: 12/25/2022] Open
Abstract
Searching for new bio-based herbicides is crucial for decreasing chemical pollution, protecting the environment, and sustaining biodiversity. Origanum vulgare is considered a promising source of essential oil with herbicidal effect. The mode of action is not known. The present study focused on (1) comparison of phytotoxic activity of Origanum vulgare EO on monocot (Triticum aestivum and Hordeum vulgare) and dicot species (Lepidium sativum and Sinapis alba); (2) and evaluating other antimicrobial biological activities against phytopatogen bacteria (Clavibacter michiganensis, Pseudomonas syringae pv. phaseolicola, Pseudomonas savastanoi, and Xanthomonas campestris); antifungal activity against Monilinia fructicola, Aspergillus niger, Penicillium expansum, and Botrytis cinerea; cytotoxic activity and antioxidant activity. According to the GC/MS analyses, the EO belongs to the thymol chemotype O. vulgare with its high content of thymol (76%). Germination of all four species was not influenced by EO. The phytotoxic effect was statistically significant in the monocot species, while in the dicot species the opposite was observed-a stimulation effect, which was also statistically significant. Strong biological activity of O. vulgare EO was noted on all phytopatogen bacteria and fungi in the highest dose. Cytotoxic activity showed an IC50 = 50.5 μg/mL. Antioxidant activity showed an IC50 = 106.6 μg/mL after 45 min experimental time. Based on the presented results, it is possible to conclude that thymol chemotype O. vulgare essential oil could be potentially used as a herbicide with selective effects on monocot plant species.
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Affiliation(s)
- Daniela Gruľová
- Department of Ecology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia;
- Correspondence: ; Tel.: +421-948-030-412
| | - Lucia Caputo
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, Italy; (L.C.); (L.D.M.); (V.D.F.)
| | - Hazem S. Elshafie
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Viale dell’Ateneo Lucano 10, 85100 Potenza, Italy; (H.S.E.); (I.C.)
| | - Beáta Baranová
- Department of Ecology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia;
| | - Laura De Martino
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, Italy; (L.C.); (L.D.M.); (V.D.F.)
| | - Vincent Sedlák
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia; (V.S.); (Z.G.); (J.P.)
| | - Zuzana Gogaľová
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia; (V.S.); (Z.G.); (J.P.)
| | - Janka Poráčová
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia; (V.S.); (Z.G.); (J.P.)
| | - Ippolito Camele
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Viale dell’Ateneo Lucano 10, 85100 Potenza, Italy; (H.S.E.); (I.C.)
| | - Vincenzo De Feo
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, Italy; (L.C.); (L.D.M.); (V.D.F.)
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Sarheed MM, Rajabi F, Kunert M, Boland W, Wetters S, Miadowitz K, Kaźmierczak A, Sahi VP, Nick P. Cellular Base of Mint Allelopathy: Menthone Affects Plant Microtubules. FRONTIERS IN PLANT SCIENCE 2020; 11:546345. [PMID: 33042176 PMCID: PMC7524878 DOI: 10.3389/fpls.2020.546345] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 08/12/2020] [Indexed: 05/09/2023]
Abstract
Plants can use volatiles for remote suppression of competitors. Mints produce essential oils, which are known to affect the growth of other plants. We used a comparative approach to identify allelopathic compounds from different Mints (genus Mentha, but also including Cat Mint, Nepeta cataria, and Corean Mint, Agastache rugosa, belonging to sisters clades within the Mentheae) using the standard cress germination assay as readout. To understand the mechanism behind this allelopathic effect, we investigated the response of tobacco BY-2 cell lines, expressing GFP-tagged markers for microtubules and actin filaments to these essential oils. Based on the comparison between bioactivity and chemical components, we identified menthone as prime candidate for the allelopathic effect, and confirmed this bioactivity targeted to microtubules experimentally in both, plant cells (tobaccoBY-2), and seedlings (Arabidopsis thaliana). We could show that menthone disrupted microtubules and induced mortality linked with a rapid permeabilization (less than 15 min) of the plasma membrane. This mortality was elevated in a tubulin marker line, where microtubules are mildly stabilized. Our study paves the way for the development of novel bioherbicides that would be environmentally friendly.
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Affiliation(s)
- Mohammed Mahmood Sarheed
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Fatemeh Rajabi
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Maritta Kunert
- Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Wilhelm Boland
- Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Sascha Wetters
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Kai Miadowitz
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Andrzej Kaźmierczak
- Department of Cytophysiology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Vaidurya Pratap Sahi
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
- *Correspondence: Vaidurya Pratap Sahi, ;
| | - Peter Nick
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
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Wang ZF, Sun ZC, Xiao L, Zhou YM, Du FY. Herbicidal Polyketides and Diketopiperazine Derivatives from Penicillium viridicatum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:14102-14109. [PMID: 31790231 DOI: 10.1021/acs.jafc.9b06116] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Herbicidal activity-guided isolation from the fermentation extract of Penicillium viridicatum had obtained two herbicidal series of polyketides (1-7) and diketopiperazine derivatives (8-11), especially including three novel polyketides (1-3). The structures and absolute configurations of new polyketides 1-3 were elucidated by extensive spectroscopic analyses, as well as comparisons between measured and calculated ECD spectra. Novel polyketides 1-3 and known 4, all bearing the heptaketide skeleton with a trans-fused decalin ring of 8-CH3 substitution, could significantly inhibit the radicle growth of Echinochloa crusgalli seedlings with a dose-dependent relationship. Especially at the concentration of 10 μg/mL, 1-4 exhibited the inhibition rates with 81.5% ± 2.0, 76.4% ± 0.8, 79.6% ± 1.1, and 80.0 ± 1.8%, respectively, even better than the commonly used synthetic herbicide of acetochlor with 76.1 ± 1.4%. Further greenhouse bioassay revealed that 4 showed pre-emergence herbicidal activity against E. crusgalli with the fresh-weight inhibition rate of 74.1% at a dosage of 400 g ai/ha, also better than acetochlor, while the other isolated metabolites (5-11) exhibited moderate herbicidal activities. The structure-activity differences of isolated polyketides indicated that the heptaketide skeleton, characterized by a trans-fused decalin ring with 8-CH3 substitution, should be the key factor of their herbicidal activities, which could give new insights for the bioherbicide developments.
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Zhao HH, Kong CH, Xu XH. Herbicidal efficacy and ecological safety of an allelochemical-based benzothiazine derivative. PEST MANAGEMENT SCIENCE 2019; 75:2690-2697. [PMID: 30773794 DOI: 10.1002/ps.5377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/10/2019] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND The development of allelochemical-based herbicides may be of particular value for weed management in cropping systems. However, the action of potential allelochemical-based herbicides on crop selectivity and ecotoxicology needs to be clarified before they can be introduced into cropping systems. RESULTS An allelochemical-based 3-(2-chloro-4-ethanesulfonyl)-benzoyl-hydroxy-2- methyl-2H-1,2-benzothiazine-1,1-dioxide, originating from the rice allelochemical tricin, was applied to a paddy system. The benzothiazine derivative could effectively control dominant weeds, while rice was not affected at rates of 75-100 g a.i. ha-1 . Furthermore, this target compound significantly inhibited the growth of all weeds tested with excellent selectivity for maize; however, it was not safe for soybean. The benzothiazine derivative had no toxic effects on zebrafish and earthworms. The benzothiazine derivative was rapidly degraded in soil with half-lives of 17.51-20.47 days. MiSeq-pyrosequencing revealed relative safety to soil microorganisms at 5 mg kg-1 of the benzothiazine derivative. CONCLUSION The allelochemical-based benzothiazine derivative at optimal application rates can be recommended to provide satisfactory control of paddy weeds. The benzothiazine derivative with excellent crop selectivity and ecological safety may be further developed for weed management in maize fields. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Huan-Huan Zhao
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Chui-Hua Kong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Xiao-Hua Xu
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, China
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Vurro M, Miguel-Rojas C, Pérez-de-Luque A. Safe nanotechnologies for increasing the effectiveness of environmentally friendly natural agrochemicals. PEST MANAGEMENT SCIENCE 2019; 75:2403-2412. [PMID: 30672106 DOI: 10.1002/ps.5348] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 05/05/2023]
Abstract
Natural compounds and living organisms continue to play a limited role in crop protection, and few of them have reached the market, despite their attractiveness and the efforts made in research. Very often these products have negative characteristics compared to synthetic compounds, e.g., higher costs of production, lower effectiveness, lack of persistence, and inability to reach and penetrate the target plant. Conversely, nanotechnologies are having an enormous impact on all human activities, including agriculture, even if the production of some nanomaterials is not environmentally friendly or could have adverse effects on agriculture and the environment. Thus, certain nanomaterials could facilitate the development of formulated natural pesticides, making them more effective and more environmentally friendly. Nanoformulations can improve efficacy, reduce effective doses, and increase shelf-life and persistence. Such controlled-release products can improve delivery to the target pest. This review considers certain available nanomaterials and nanotechnologies for use in agriculture, discussing their properties and the feasibility of their use in sustainable crop protection, in particular, in improving the effectiveness of natural bio-based agrochemicals. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Maurizio Vurro
- Institute of Sciences of Food Production, National Research Council (CNR), Bari, Italy
| | - Cristina Miguel-Rojas
- Department of Science and High Technology, University of Insubria and Total Scattering Laboratory, Como, Italy
| | - Alejandro Pérez-de-Luque
- Genomic and Biotechnology, Centre Alameda del Obispo, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Cordoba, Spain
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Kong CH, Xuan TD, Khanh TD, Tran HD, Trung NT. Allelochemicals and Signaling Chemicals in Plants. Molecules 2019; 24:molecules24152737. [PMID: 31357670 PMCID: PMC6695906 DOI: 10.3390/molecules24152737] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 12/13/2022] Open
Abstract
Plants abound with active ingredients. Among these natural constituents, allelochemicals and signaling chemicals that are released into the environments play important roles in regulating the interactions between plants and other organisms. Allelochemicals participate in the defense of plants against microbial attack, herbivore predation, and/or competition with other plants, most notably in allelopathy, which affects the establishment of competing plants. Allelochemicals could be leads for new pesticide discovery efforts. Signaling chemicals are involved in plant neighbor detection or pest identification, and they induce the production and release of plant defensive metabolites. Through the signaling chemicals, plants can either detect or identify competitors, herbivores, or pathogens, and respond by increasing defensive metabolites levels, providing an advantage for their own growth. The plant-organism interactions that are mediated by allelochemicals and signaling chemicals take place both aboveground and belowground. In the case of aboveground interactions, mediated air-borne chemicals are well established. Belowground interactions, particularly in the context of soil-borne chemicals driving signaling interactions, are largely unknown, due to the complexity of plant-soil interactions. The lack of effective and reliable methods of identification and clarification their mode of actions is one of the greatest challenges with soil-borne allelochemicals and signaling chemicals. Recent developments in methodological strategies aim at the quality, quantity, and spatiotemporal dynamics of soil-borne chemicals. This review outlines recent research regarding plant-derived allelochemicals and signaling chemicals, as well as their roles in agricultural pest management. The effort represents a mechanistically exhaustive view of plant-organism interactions that are mediated by allelochemicals and signaling chemicals and provides more realistic insights into potential implications and applications in sustainable agriculture.
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Affiliation(s)
- Chui-Hua Kong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
| | - Tran Dang Xuan
- Graduate School for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan.
| | - Tran Dang Khanh
- Agricultural Genetics Institute, Pham Van Dong Street, Hanoi 122000, Vietnam
- Center for Expert, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
| | - Hoang-Dung Tran
- Faculty of Biotechnology, Nguyen Tat Thanh University, Ho Chi Minh 72820, Vietnam
| | - Nguyen Thanh Trung
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
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Zulet-González A, Fernández-Escalada M, Zabalza A, Royuela M. Enhancement of glyphosate efficacy on Amaranthus palmeri by exogenous quinate application. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 158:1-11. [PMID: 31378343 DOI: 10.1016/j.pestbp.2019.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/04/2019] [Accepted: 04/11/2019] [Indexed: 05/09/2023]
Affiliation(s)
- Ainhoa Zulet-González
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra, Campus Arrosadia s/n, 31006, Pamplona, Spain
| | - Manuel Fernández-Escalada
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra, Campus Arrosadia s/n, 31006, Pamplona, Spain
| | - Ana Zabalza
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra, Campus Arrosadia s/n, 31006, Pamplona, Spain
| | - Mercedes Royuela
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra, Campus Arrosadia s/n, 31006, Pamplona, Spain.
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Sharma A, Singh HP, Batish DR, Kohli RK. Chemical profiling, cytotoxicity and phytotoxicity of foliar volatiles of Hyptis suaveolens. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 171:863-870. [PMID: 30665103 DOI: 10.1016/j.ecoenv.2018.12.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 12/05/2018] [Accepted: 12/27/2018] [Indexed: 05/27/2023]
Abstract
In the present study, the essential oil (EO) of Hyptis suaveolens has been explored for the first time for its phytotoxic and cytotoxic activities. The phytotoxic activity was assessed against rice (Oryza sativa) and its major troublesome weed, Echinochloa crus-galli, under laboratory and screenhouse conditions. GC-MS analysis revealed EO to be monoterpenoid (~ 79% monoterpenes) in nature with α-phellandrene (22.8%), α-pinene (10.1%) and limonene (8.5%) as the major chemical constituents. The laboratory bioassay showed a complete growth inhibitory effect of EO (≥ 2 mg mL-1) towards the germination and seedling growth of E. crus-galli. However, the inhibitory effect on rice was much less (~40% inhibition). EO caused visible injury, reduction in chlorophyll content, cell viability and ultimately led to complete wilting of E. crus-galli plants. In addition, EO altered the cell division in the meristematic cells of Allium cepa as depicted by ~63% decrease in mitotic index. EO exposure induced several aberrations at chromosomal (c-mitosis, anaphase bridges, chromosomal breakage, vagrant chromosomes, and sticky chromosomes) and cytological level (cytoplasm destruction, peripheral nuclei, and bi-nucleate cells). The present study concludes that H. suaveolens EO possesses phytotoxic activity due to its mito-depressive activity, and could serve as a natural herbicide under sustainable agricultural practices.
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Affiliation(s)
- Anita Sharma
- Department of Botany, Panjab University, Chandigarh 160014, India
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh 160014, India.
| | - Daizy R Batish
- Department of Botany, Panjab University, Chandigarh 160014, India.
| | - Ravinder Kumar Kohli
- Department of Botany, Panjab University, Chandigarh 160014, India; Central University of Punjab, Mansa Road, Bathinda 151001, India
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Zhao Z, Ying Y, Hung YS, Tang Y. Genome Mining Reveals Neurospora crassa Can Produce the Salicylaldehyde Sordarial. JOURNAL OF NATURAL PRODUCTS 2019; 82:1029-1033. [PMID: 30908040 PMCID: PMC6933945 DOI: 10.1021/acs.jnatprod.8b00983] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A highly reducing polyketide synthase gene cluster from the Magnaporthe oryzae genome was previously identified to produce phytotoxic compounds including pyriculol. A homologous gene cluster was found in Neurospora crassa through bioinformatics analysis. Heterologous expression of this cluster led to the production of the salicylic aldehyde sordarial and related intermediates. A series of combinatorial gene expression experiments established the set of enzymes required to produce sordarial and the likely biosynthetic pathway.
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Affiliation(s)
- Zhiyue Zhao
- Department of Chemical and Biomolecular Engineering
| | - Youmin Ying
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Yiu-Sun Hung
- Department of Chemical and Biomolecular Engineering
| | - Yi Tang
- Department of Chemical and Biomolecular Engineering
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, U. S. A
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Ke S, Zhang Z, Shi L, Liu M, Fang W, Zhang Y, Wu Z, Wan Z, Long T, Wang K. An efficient synthesis and bioactivity evaluation of oxazole-containing natural hinduchelins A-D and their derivatives. Org Biomol Chem 2019; 17:3635-3639. [PMID: 30916700 DOI: 10.1039/c9ob00352e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oxazoles are an important class of biologically active metabolites from nature, and exhibit broad biological activities as the lead for drug discovery. Hinduchelins are a class of unusual natural products with an oxazole unit, isolated from Streptoalloteichus hindustanus, and with a potential iron-chelating ability. These compounds are the first identified naturally occurring unusual oxazole derivatives to possess a catechol unit. However, some of these compounds are not abundant in nature, and thus, the efficient syntheses of these compounds are advantageous in exploring their potential applications. This paper reports the efficient synthesis and bio-evaluation of hinduchelins A-D and their derivatives with convenient procedures and high yields.
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Affiliation(s)
- Shaoyong Ke
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China.
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Lebecque S, Lins L, Dayan FE, Fauconnier ML, Deleu M. Interactions Between Natural Herbicides and Lipid Bilayers Mimicking the Plant Plasma Membrane. FRONTIERS IN PLANT SCIENCE 2019; 10:329. [PMID: 30936889 PMCID: PMC6431664 DOI: 10.3389/fpls.2019.00329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/28/2019] [Indexed: 05/06/2023]
Abstract
Natural phytotoxic compounds could become an alternative to traditional herbicides in the framework of sustainable agriculture. Nonanoic acid, sarmentine and sorgoleone are such molecules extracted from plants and able to inhibit the growth of various plant species. However, their mode of action is not fully understood and despite clues indicating that they could affect the plant plasma membrane, molecular details of such phenomenon are lacking. In this paper, we investigate the interactions between those natural herbicides and artificial bilayers mimicking the plant plasma membrane. First, their ability to affect lipid order and fluidity is evaluated by means of fluorescence measurements. It appears that sorgoleone has a clear ordering effect on lipid bilayers, while nonanoic acid and sarmentine induce no or little change to these parameters. Then, a thermodynamic characterization of interactions of each compound with lipid vesicles is obtained with isothermal titration calorimetry, and their respective affinity for bilayers is found to be ranked as follows: sorgoleone > sarmentine > nonanoic acid. Finally, molecular dynamics simulations give molecular details about the location of each compound within a lipid bilayer and confirm the rigidifying effect of sorgoleone. Data also suggest that mismatch in alkyl chain length between nonanoic acid or sarmentine and lipid hydrophobic tails could be responsible for bilayer destabilization. Results are discussed regarding their implications for the phytotoxicity of these compounds.
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Affiliation(s)
- Simon Lebecque
- TERRA, Laboratory of Molecular Biophysics at Interfaces, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
- TERRA – AgricultureIsLife, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | - Laurence Lins
- TERRA, Laboratory of Molecular Biophysics at Interfaces, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | - Franck E. Dayan
- Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO, United States
| | - Marie-Laure Fauconnier
- General and Organic Chemistry Laboratory, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | - Magali Deleu
- TERRA, Laboratory of Molecular Biophysics at Interfaces, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
- *Correspondence: Magali Deleu,
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Araniti F, Costas-Gil A, Cabeiras-Freijanes L, Lupini A, Sunseri F, Reigosa MJ, Abenavoli MR, Sánchez-Moreiras AM. Rosmarinic acid induces programmed cell death in Arabidopsis seedlings through reactive oxygen species and mitochondrial dysfunction. PLoS One 2018; 13:e0208802. [PMID: 30586368 PMCID: PMC6306208 DOI: 10.1371/journal.pone.0208802] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 11/25/2018] [Indexed: 12/19/2022] Open
Abstract
Phytotoxic potential of rosmarinic acid (RA), a caffeic acid ester largely found in aromatic species, was evaluated on Arabidopsis through metabolomic and microscopic approaches. In-vitro bioassays pointed out that RA affected root growth and morphology, causing ROS burst, ROS scavengers activity inhibition and consequently, an alteration on cells organization and ultrastructure. In particular, RA-treatment (175 μM) caused strong vacuolization, alteration of mitochondria structure and function and a consistent ROS-induced reduction of their transmembrane potential (ΔΨm). These data suggested a cell energy deficit also confirmed by the metabolomic analysis, which highlighted a strong alteration of both TCA cycle and amino acids metabolism. Moreover, the increase in H2O2 and O2- contents suggested that RA-treated meristems underwent oxidative stress, resulting in apoptotic bodies and necrotic cells. Taken together, these results suggest that RA inhibits two of the main ROS scavengers causing high ROS accumulation, responsible of the alterations on mitochondrial ultrastructure and activity through ΔΨm dissipation, TCA-cycle alteration, cell starvation and consequently cell death on Arabidopsis seedlings. All these effects resulted in a strong inhibition on root growth and development, which convert RA in a promising molecule to be explored for further use in weed management.
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Affiliation(s)
- Fabrizio Araniti
- Department AGRARIA, University Mediterranea of Reggio Calabria, Feo di Vito, Reggio Calabria, Italy
| | - Aitana Costas-Gil
- Department of Plant Biology and Soil Science. University of Vigo. Campus Lagoas-Marcosende, Vigo, Spain
| | - Luz Cabeiras-Freijanes
- Department of Plant Biology and Soil Science. University of Vigo. Campus Lagoas-Marcosende, Vigo, Spain
- CÍTACA. Agri-Food Research and Transfer Cluster, Campus da Auga. University of Vigo, Ourense, Spain
| | - Antonio Lupini
- Department AGRARIA, University Mediterranea of Reggio Calabria, Feo di Vito, Reggio Calabria, Italy
| | - Francesco Sunseri
- Department AGRARIA, University Mediterranea of Reggio Calabria, Feo di Vito, Reggio Calabria, Italy
| | - Manuel J. Reigosa
- Department of Plant Biology and Soil Science. University of Vigo. Campus Lagoas-Marcosende, Vigo, Spain
- CÍTACA. Agri-Food Research and Transfer Cluster, Campus da Auga. University of Vigo, Ourense, Spain
| | - Maria Rosa Abenavoli
- Department AGRARIA, University Mediterranea of Reggio Calabria, Feo di Vito, Reggio Calabria, Italy
| | - Adela M. Sánchez-Moreiras
- Department of Plant Biology and Soil Science. University of Vigo. Campus Lagoas-Marcosende, Vigo, Spain
- CÍTACA. Agri-Food Research and Transfer Cluster, Campus da Auga. University of Vigo, Ourense, Spain
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Appiah KS, Mardani HK, Omari RA, Eziah VY, Ofosu-Anim J, Onwona-Agyeman S, Amoatey CA, Kawada K, Katsura K, Oikawa Y, Fujii Y. Involvement of Carnosic Acid in the Phytotoxicity of Rosmarinus officinalis Leaves. Toxins (Basel) 2018; 10:E498. [PMID: 30486296 PMCID: PMC6316382 DOI: 10.3390/toxins10120498] [Citation(s) in RCA: 12] [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: 10/04/2018] [Revised: 11/03/2018] [Accepted: 11/13/2018] [Indexed: 11/17/2022] Open
Abstract
Weeds are rapidly developing resistance to synthetic herbicides, and this can pose a threat to the ecosystem. Exploring allelopathic species as an alternative weed control measure can help minimize the ecological threat posed by herbicide-resistant weeds. In this study, we aimed to evaluate the contribution of some polyphenols to the allelopathy of rosemary (Rosmarinus officinalis L.). The phytotoxic effects of rosemary (leaves, roots, inflorescences, and stems) crude extracts were tested on lettuce (Lactuca sativa L.). Soils incorporated with dried rosemary leaves were also tested on test plants. Reversed-phase high-performance liquid chromatography (HPLC) analysis was used to determine the content of some polyphenols (caffeic, ferulic, gallic, rosmarinic, carnosic, and chlorogenic acids) in rosemary. The specific activity and total activity of crude extracts and individual compounds were evaluated using lettuce. The crude extract of rosemary leaves showed the highest growth inhibitory effect among the rosemary organs tested. Soil amended with rosemary leaf debris reduced the dry matter and seed emergence of lettuce. Carnosic acid was the main compound detected in rosemary leaves and had a high specific activity when tested on lettuce. During the seed germination period, there was observed filter paper coloration among the test plants treated with carnosic acid (250 μg/mL). The high concentration and strong inhibitory effect of carnosic acid could explain the inhibitory activity of the rosemary leaf extract. Hence, we conclude based on the total activity estimation that carnosic acid among the other tested compounds is the major allelochemical in rosemary leaves.
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Affiliation(s)
- Kwame Sarpong Appiah
- United Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
| | - Hossein Korrani Mardani
- United Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
| | - Richard Ansong Omari
- United Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
| | - Vincent Yao Eziah
- Department of Crop Science, University of Ghana, Legon, P.O. Box LG 44 Accra, Ghana.
| | - John Ofosu-Anim
- School of Architecture and Science, Central University, P.O. Box 2305 Tema, Ghana.
| | - Siaw Onwona-Agyeman
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
| | | | - Kiyokazu Kawada
- School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8572, Japan.
| | - Keisuke Katsura
- United Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
- Department of International and Environmental Agriculture Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
| | - Yosei Oikawa
- Department of International and Environmental Agriculture Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
| | - Yoshiharu Fujii
- United Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
- Department of International and Environmental Agriculture Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
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Hussain MI, Reigosa MJ, Muscolo A. Carbon (δ 13C) and Nitrogen (δ 15N) Stable Isotope Composition Provide New Insights into Phenotypic Plasticity in Broad Leaf Weed Rumex acetosa under Allelochemical Stress. Molecules 2018; 23:molecules23102449. [PMID: 30257436 PMCID: PMC6222457 DOI: 10.3390/molecules23102449] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 09/20/2018] [Accepted: 09/21/2018] [Indexed: 11/29/2022] Open
Abstract
Phenolic compounds, hydroquinone and cinnamic acid derivatives have been identified as major allelochemicals with known phytotoxicity from allelopathic plant Acacia melanoxylon R. Br. Several phenolic compounds such as ferulic acid (FA), p-hydroxybenzoic acid (pHBA) and flavonoid (rutin, quercetin) constituents occur in the phyllodes and flowers of A. melanoxylon and have demonstrated inhibitory effects on germination and physiological characteristics of lettuce and perennial grasses. However, to date, little is known about the mechanisms of action of these secondary metabolites in broad-leaved weeds at ecophysiological level. The objective of this study was to determine the response of Rumex acetosa carbon isotope composition and other physiological parameters to the interaction of plant secondary metabolites (PSM) (FA and pHBA) stress and the usefulness of carbon isotope discrimination (Δ13C) as indicative of the functional performance of intrinsic water use efficiency (iWUE) at level of plant leaf. R. acetosa plant were grown under greenhouse condition and subjected to PSM stress (0, 0.1, 0.5, 1.0, and 1.5 mM) for six days. Here, we show that FA and pHBA are potent inhibitors of Δ13C that varied from 21.0‰ to 22.9‰. Higher pHBA and FA supply enhanced/retard the Nleaf and increased the Cleaf while ratio of intercellular CO2 concentration from leaf to air (Ci/Ca) was significantly decreased as compared to control. Leaf water content and leaf osmotic potential were decreased following treatment with both PSM. The Ci/Ca decreased rapidly with higher concentration of FA and pHBA. However, iWUE increased at all allelochemical concentrations. At the whole plant level, both PSM showed pronounced growth-inhibitory effects on PBM and C and N concentration, root fresh/dry weight, leaf fresh/dry weight, and root, shoot length of C3 broad leaf weed R. acetosa. Carbon isotope discrimination (Δ) was correlated with the dry matter to transpiration ratio (transpiration efficiency) in this C3 species, but its heritability and relationship to R. acetosa growth are less clear. Our FA and pHBA compounds are the potent and selective carbon isotope composition (δ13C) inhibitors known to date. These results confirm the phytotoxicity of FA and pHBA on R. acetosa seedlings, the reduction of relative water content and the induction of carbon isotope discrimination (Δ) with lower plant biomass.
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Affiliation(s)
- M Iftikhar Hussain
- Department of Plant Biology and Soil Science, University of Vigo, Campus Lagoas-Marcosende, E-36310 Vigo, Spain.
- Research Institute of Sciences and Engineering (RISE), University of Sharjah, P.O. Box 27272 Sharjah, UAE.
| | - Manuel J Reigosa
- Department of Plant Biology and Soil Science, University of Vigo, Campus Lagoas-Marcosende, E-36310 Vigo, Spain.
| | - Adele Muscolo
- Department of Agriculture, Mediterranean University, Feo di Vito, 89122 Reggio Calabria, Italy.
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48
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Possible roles of glutamine synthetase in responding to environmental changes in a scleractinian coral. Mol Biol Rep 2018; 45:2115-2124. [PMID: 30203242 DOI: 10.1007/s11033-018-4369-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 09/06/2018] [Indexed: 10/28/2022]
Abstract
Glutamine synthetase is an enzyme that plays an essential role in the metabolism of nitrogen by catalyzing the condensation of glutamate and ammonia to form glutamine. In this study, the activity and responses of glutamine synthetase towards environmental changes were investigated in the scleractinian coral Pocillopora damicornis. The identified glutamine synthetase (PdGS) was comprised of 362 amino acids and predicted to contain one Gln-synt_N and one Gln-synt_C domain. Expression of PdGS mRNA increased significantly after 12 h (1.28-fold, p < 0.05) of exposure to elevated ammonium, while glutamine synthetase activity increased significantly from 12 to 24 h, peaking at 12 h (54.80 U mg-1, p < 0.05). The recombinant protein of the mature PdGS (rPdGS) was expressed in E. coli BL21, and its activities were detected under different temperature, pH and glufosinate levels. The highest levels of rPdGS activity were observed at 25 °C and pH 8 respectively, but decreased significantly at lower temperature, and higher or lower pH. Furthermore, the level of rPdGS activities was negatively correlated with the concentration of glufosinate, specifically decreasing at 10-5 mol L-1 glufosinate to be less than 50% (p < 0.05) of that in the blank. These results collectively suggest that PdGS, as a homologue of glutamine synthetase, was involved in the nitrogen assimilation in the scleractinian coral. Further, its physiological functions could be suppressed by high temperature, ocean acidification and residual glufosinate, which might further regulate the coral-zooxanthella symbiosis via the nitrogen metabolism in the scleractinian coral P. damicornis.
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49
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High-Yield Production of Herbicidal Thaxtomins and Thaxtomin Analogs in a Nonpathogenic Streptomyces Strain. Appl Environ Microbiol 2018; 84:AEM.00164-18. [PMID: 29602787 DOI: 10.1128/aem.00164-18] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 03/27/2018] [Indexed: 12/13/2022] Open
Abstract
Thaxtomins are virulence factors of most plant-pathogenic Streptomyces strains. Due to their potent herbicidal activity, attractive environmental compatibility, and inherent biodegradability, thaxtomins are key active ingredients of bioherbicides approved by the U.S. Environmental Protection Agency. However, the low yield of thaxtomins in native Streptomyces producers limits their wide agricultural applications. Here, we describe the high-yield production of thaxtomins in a heterologous host. The thaxtomin gene cluster from S. scabiei 87.22 was cloned and expressed in S. albus J1074 after chromosomal integration. The production of thaxtomins and nitrotryptophan analogs was observed using liquid chromatography-mass spectrometry (LC-MS) analysis. When the engineered S. albus J1074 was cultured in the minimal medium Thx defined medium supplemented with 1% cellobiose (TDMc), the yield of the most abundant and herbicidal analog, thaxtomin A, was 10 times higher than that in S. scabiei 87.22, and optimization of the medium resulted in the highest yield of thaxtomin analogs at about 222 mg/liter. Further engineering of the thaxtomin biosynthetic gene cluster through gene deletion led to the production of multiple biosynthetic intermediates important to the chemical synthesis of new analogs. Additionally, the versatility of the thaxtomin biosynthetic system in S. albus J1074 was capitalized on to produce one unnatural fluorinated analog, 5-fluoro-thaxtomin A (5-F-thaxtomin A), whose structure was elucidated by a combination of MS and one-dimensional (1D) and 2D nuclear magnetic resonance (NMR) analyses. Natural and unnatural thaxtomins demonstrated potent herbicidal activity in radish seedling assays. These results indicated that S. albus J1074 has the potential to produce thaxtomins and analogs thereof with high yield, fostering their agricultural applications.IMPORTANCE Thaxtomins are agriculturally valuable herbicidal natural products, but the productivity of native producers is limiting. Heterologous expression of the thaxtomin gene cluster in S. albus J1074 resulted in the highest yield of thaxtomins ever reported, representing a significant leap forward in its wide agricultural use. Furthermore, current synthetic routes to thaxtomins and analogs are lengthy, and two thaxtomin biosynthetic intermediates produced at high yields in this work can provide precursors and building blocks to advanced synthetic routes. Importantly, the production of 5-F-thaxtomin A in engineered S. albus J1074 demonstrated a viable alternative to chemical methods in the synthesis of new thaxtomin analogs. Moreover, our work presents an attractive synthetic biology strategy to improve the supply of herbicidal thaxtomins, likely finding general applications in the discovery and production of many other bioactive natural products.
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50
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Littleson MM, Baker CM, Dalençon AJ, Frye EC, Jamieson C, Kennedy AR, Ling KB, McLachlan MM, Montgomery MG, Russell CJ, Watson AJB. Scalable total synthesis and comprehensive structure-activity relationship studies of the phytotoxin coronatine. Nat Commun 2018; 9:1105. [PMID: 29549326 PMCID: PMC5856746 DOI: 10.1038/s41467-018-03443-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 02/13/2018] [Indexed: 11/29/2022] Open
Abstract
Natural phytotoxins are valuable starting points for agrochemical design. Acting as a jasmonate agonist, coronatine represents an attractive herbicidal lead with novel mode of action, and has been an important synthetic target for agrochemical development. However, both restricted access to quantities of coronatine and a lack of a suitably scalable and flexible synthetic approach to its constituent natural product components, coronafacic and coronamic acids, has frustrated development of this target. Here, we report gram-scale production of coronafacic acid that allows a comprehensive structure–activity relationship study of this target. Biological assessment of a >120 member library combined with computational studies have revealed the key determinants of potency, rationalising hypotheses held for decades, and allowing future rational design of new herbicidal leads based on this template. Development of comprehensive structure–activity relationships for coronatine has been a major goal in the agrochemical industry. Here, the authors report the gram-scale production and structure–activity relationship of parent coronafacic acid and ultimately rationalise the biological activity of analogues of this phytotoxin.
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Affiliation(s)
- Mairi M Littleson
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Christopher M Baker
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Anne J Dalençon
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Elizabeth C Frye
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Craig Jamieson
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Alan R Kennedy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Kenneth B Ling
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Matthew M McLachlan
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Mark G Montgomery
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Claire J Russell
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Allan J B Watson
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK.
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