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Adande K, Simalou O, Ardanuy J, Eloh K, Mehalla C, Constant P, Fabing I, Génisson Y, Ballereau S. Synthesis and biological evaluation of natural Lachnophyllum methyl ester, Lachnophyllum lactone and their synthetic analogs. Org Biomol Chem 2024. [PMID: 39257242 DOI: 10.1039/d4ob01224k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
(2Z)-Lachnophyllum methyl ester and (4Z)-Lachnophyllum lactone were recently identified as major components in essential oils and extracts of Conyza bonariensis from Togo. Extended biological evaluation of these acetylenic compounds was however hampered by the reduced amounts isolated. A synthetic route was designed providing access to larger quantities of these two natural products as well as to original non-natural analogs with the prospect of exploring for the first time the structure-activity relationships in this series. Using LC/MS analysis, synthetic samples allowed confirming the presence of the two previously isolated natural products in plant extracts obtained by the accelerated solvent extraction technique. The nematocidal activity of the synthesized compounds confirmed the potency of the natural products, which remain the most active among all analogs tested. The synthesized compounds were also assessed against Leishmania infantum axenic amastigotes and the Mycobacterium tuberculosis H37Rv pathogenic strain. (2Z)-Lachnophyllum methyl ester, (4Z)-Lachnophyllum lactone and lactone analogs exhibited the strongest antileishmanial potency. As expected, a longer alkyl chain was necessary to observe significant antimycobacterial activity. The lactone analog bearing a C10 lipophilic appendage displayed the highest antimycobacterial potency. The notable activities of lactones, naturally occurring or analogs, either nematicidal, antileishmanial or antimycobacterial, were compared to their cytotoxicity for mammalian cells and revealed moderate selectivity index values. In this regard, the innocuous (2Z)-Lachnophyllum methyl ester and its analogs open up more promising perspectives for the discovery of bioactive agents to protect both agricultural crops and human health.
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Affiliation(s)
- Kodjo Adande
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), 118 route de Narbonne, 31062, Toulouse Cedex 9, France.
- Laboratoire de Chimie Organique et Des Substances Naturelles (Lab COSNat), Département de Chimie, Faculté Des Sciences, Université de Lomé, Lomé, Togo
| | - Oudjaniyobi Simalou
- Laboratoire de Chimie Organique et Des Substances Naturelles (Lab COSNat), Département de Chimie, Faculté Des Sciences, Université de Lomé, Lomé, Togo
| | - Juline Ardanuy
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), 118 route de Narbonne, 31062, Toulouse Cedex 9, France.
| | - Kodjo Eloh
- Laboratoire de Chimie Organique et des Sciences de l'Environnement (LaCOSE), Département de Chimie, Faculté Des Sciences et Techniques, Université de Kara, Kara, Togo
| | - Chérine Mehalla
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), Toulouse, France
| | - Patricia Constant
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), Toulouse, France
| | - Isabelle Fabing
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), 118 route de Narbonne, 31062, Toulouse Cedex 9, France.
| | - Yves Génisson
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), 118 route de Narbonne, 31062, Toulouse Cedex 9, France.
| | - Stéphanie Ballereau
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), 118 route de Narbonne, 31062, Toulouse Cedex 9, France.
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Manrique S, Gómez J, Piñeiro M, Sampietro BA, Peschiutta ML, Tapia A, Simirgiotis MJ, Lima B. Zuccagnia punctata Cav., a Potential Environmentally Friendly and Sustainable Bionematicide for the Control of Argentinean Horticultural Crops. PLANTS (BASEL, SWITZERLAND) 2023; 12:4104. [PMID: 38140431 PMCID: PMC10747203 DOI: 10.3390/plants12244104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/21/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023]
Abstract
This research was designed to investigate the metabolite profiling, phenolics, and flavonoids content as well as the potential nematicidal properties of decoction (ZpDe), orange-yellow resin (ZpRe) and essential oil (ZpEO) from Argentinean medicinal plant Zuccagnia punctata Cav. Additionally, the antioxidant and antibacterial properties of ZpDe and ZpEO were determined. Metabolite profiling was obtained by an ultrahigh-resolution liquid chromatography MS analysis (UHPLC-ESI-QTOF/OT-MS-MS) and GCMS. The nematicidal activity was assayed by a standardized method against Meloidogyne incognita. The antioxidant properties were screened by four methods: (2,2-diphenyl-1-picrylhydrazyl assay (DPPH), Trolox equivalent antioxidant activity assay (TEAC), ferric-reducing antioxidant power assay (FRAP), and lipid peroxidation in erythrocytes (ILP). The antibacterial activity was evaluated according to the Clinical and Laboratory Standards Institute (CLSI) rules. The ZpDe, ZpRe and ZpEO displayed a strong nematicidal activity with an LC50 of 0.208, 0.017 and 0.142 mg/mL, respectively. On the other hand, the ZpDe showed a strong DPPH scavenging activity (IC50 = 28.54 µg/mL); ILP of 87.75% at 250 µg ZpDe/mL and moderated antimicrobial activity. The ZpEO showed promising activity against a panel of yeasts Candida albicans and non-albicans (ATCC and clinically isolated) with MIC values from 750 to 1500 µg/mL. The ZpDe showed a content of phenolics and flavonoid compounds of 241 mg GAE/g and 10 mg EQ/g, respectively. Fifty phenolic compounds were identified in ZpDe by ultrahigh-resolution liquid chromatography (UHPLC-PDA- Q-TOF-MS) analysis, while forty-six phenolic compounds were identified in ZpRe by UHPLC-ESI-Q-OT-MS-MS and twenty-nine in ZpEO using a GC-MS analysis, updating the knowledge on the chemical profile of this species. The results support and standardize this medicinal plant mainly as a potential environmentally friendly and sustainable bionematicide for the control of Argentinean horticultural crops including tomatoes and peppers and as a source of antimicrobial and antioxidant compounds which could be further explored and exploited for potential applications.
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Affiliation(s)
- Sofía Manrique
- Instituto de Biotecnología—Instituto de Ciencias Básicas, Universidad Nacional de San Juan (UNSJ), San Juan J5400ARL, Argentina; (S.M.); (J.G.); (M.P.); (B.A.S.)
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CABA, Buenos Aires C1425FQB, Argentina
| | - Jessica Gómez
- Instituto de Biotecnología—Instituto de Ciencias Básicas, Universidad Nacional de San Juan (UNSJ), San Juan J5400ARL, Argentina; (S.M.); (J.G.); (M.P.); (B.A.S.)
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CABA, Buenos Aires C1425FQB, Argentina
| | - Mauricio Piñeiro
- Instituto de Biotecnología—Instituto de Ciencias Básicas, Universidad Nacional de San Juan (UNSJ), San Juan J5400ARL, Argentina; (S.M.); (J.G.); (M.P.); (B.A.S.)
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CABA, Buenos Aires C1425FQB, Argentina
| | - Belén Ariza Sampietro
- Instituto de Biotecnología—Instituto de Ciencias Básicas, Universidad Nacional de San Juan (UNSJ), San Juan J5400ARL, Argentina; (S.M.); (J.G.); (M.P.); (B.A.S.)
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CABA, Buenos Aires C1425FQB, Argentina
| | - Maria L. Peschiutta
- Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET)—Cátedra de Química Orgánica, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba X5000GYA, Argentina;
| | - Alejandro Tapia
- Instituto de Biotecnología—Instituto de Ciencias Básicas, Universidad Nacional de San Juan (UNSJ), San Juan J5400ARL, Argentina; (S.M.); (J.G.); (M.P.); (B.A.S.)
| | - Mario J. Simirgiotis
- Instituto de Farmacia, Facultad de Ciencias, Campus Isla Teja, Universidad Austral de Chile, Valdivia 5090000, Chile
- Center for Interdisciplinary Studies on the Nervous System (CISNe), Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Beatriz Lima
- Instituto de Biotecnología—Instituto de Ciencias Básicas, Universidad Nacional de San Juan (UNSJ), San Juan J5400ARL, Argentina; (S.M.); (J.G.); (M.P.); (B.A.S.)
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CABA, Buenos Aires C1425FQB, Argentina
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Liu Y, Liu Y, Yang L, Zhang T, Jin Y, Liu L, Du J, Zhang D, Li B, Gao C, Liu F. The effect of abamectin application in combination with agronomic measures on the control efficacy of cucumber root-knot nematodes and the cucumber yield. PEST MANAGEMENT SCIENCE 2023; 79:3190-3199. [PMID: 37030009 DOI: 10.1002/ps.7497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 02/20/2023] [Accepted: 04/09/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND As a registered non-fumigant nematicide, abamectin has been widely used as a soil treatment against many cash crop nematode diseases. In a previous study, we found that soil adsorption hindered the stable performance of abamectin against root-knot nematodes in the field. RESULTS In this study, an efficient and labor-saving application method of soil blending abamectin combined with rotary tillage, a common agronomic measure, was developed to improve the efficacy of abamectin against root-knot nematode disease. We revealed the role of four parameters in this application method. At an abamectin dose of 750 g a.i. ha-1 , spray water volume of 675 L ha-1 and rotation depth of 20 cm, abamectin was well distributed in the 0-20 cm soil layer at a concentration of 0.41-0.46 mg kg-1 , the efficacy against root-knot nematode disease was 72.12%, and the cucumber yield was 51.93 t ha-1 . At the same dosage, root irrigation and flood irrigation measures resulted in only 29.28% and 33.43% control, with cucumber yields of 42.96 and 44.73 t ha-1 , respectively. CONCLUSION To control root-knot nematode disease with abamectin, a soil blending application combined with rotary tilling is superior to leaching application combined with the agronomic measure of irrigation. The former application method can improve the dispersion of abamectin in the soil, enhance the efficacy of abamectin against root-knot nematodes and maintain a stable cucumber yield. In addition, the increased labor required for application combined with agronomic measures is negligible and has excellent application prospects. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Yukun Liu
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Yujuan Liu
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Liyuan Yang
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Tao Zhang
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Yan Jin
- Shandong Province Institute for the Control of Agrochemicals, Shandong, People's Republic of China
| | - Lihong Liu
- Pesticide Supervision and Management Department of Shijiazhuang, Shijiazhuang, China
| | - Jiang Du
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Daxia Zhang
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Beixing Li
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Chuanjie Gao
- Shandong Province Institute for the Control of Agrochemicals, Shandong, People's Republic of China
| | - Feng Liu
- Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China
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Ma Z, Qiu S, Zhang D, Guo X, Lu Y, Fan Y, Chen X. Design, synthesis, and antifungal activity of novel dithiin tetracarboximide derivatives as potential succinate dehydrogenase inhibitors. PEST MANAGEMENT SCIENCE 2023; 79:1922-1930. [PMID: 36658467 DOI: 10.1002/ps.7369] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/11/2022] [Accepted: 01/20/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Succinate dehydrogenase inhibitor (SDHI) fungicides are an important class of agricultural fungicides with the advantages of high efficiency and a broad bactericidal spectrum. To pursue novel SDHIs, a series of N-substituted dithiin tetracarboximide derivatives were designed, synthesized, and characterized by 1 H NMR, 13 C NMR, and high resolution mass spectrum (HRMS). RESULTS These engineered compounds displayed potent fungicidal activity against phytopathogens, including Sclerotinia sclerotiorum, Botrytis cinerea, and Rhizoctonia solani, comparable with that of the commercial SDHI fungicide boscalid. In particular, compound 18 stood out with prominent activity against S. sclerotiorum with a half-maximal effective concentration (EC50 ) value of 1.37 μg ml-1 . Compound 1 exhibited the most potent antifungal activity against B. cinerea with EC50 values of 5.02 μg ml-1 . As for R. solani, 12 and 13 exhibited remarkably inhibitory activity with EC50 values of 4.26 and 5.76 μg ml-1 , respectively. In the succinate dehydrogenase (SDH) inhibition assay, 13 presented significant inhibitory activity with a half-maximal inhibitory concentration (IC50 ) value of 15.3 μm, which was approximately equivalent to that of boscalid (14.2 μm). Furthermore, molecular docking studies revealed that 13 could anchor in the binding site of SDH. CONCLUSION Taken together, results suggested that the dithiin tetracarboximide scaffold possessed a huge potential to be developed as novel fungicides and SDHIs. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Zhi Ma
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Shuo Qiu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Dong Zhang
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Xinying Guo
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Yuele Lu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Yongxian Fan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Xiaolong Chen
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, People's Republic of China
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Wang WK, Bao FY, Wang ST, Zhao SY. Access to 3-Aminomethylated Maleimides via a Phosphine-Catalyzed Aza-Morita-Baylis-Hillman Type Coupling. J Org Chem 2023. [PMID: 37114576 DOI: 10.1021/acs.joc.3c00284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
A designed method for the preparation of 3-aminomethylated maleimides via Morita-Baylis-Hillman (MBH) reaction was developed. This phosphine-catalyzed coupling adopted maleimides and 1,3,5-triazinanes as the substrate, giving a series of 3-aminomethylated maleimide derivatives with a double bond retained on the maleimide ring in 41-90% yield. Acylation, isomerization, and Michael addition of the obtained products demonstrated the synthetic application of the present protocol. The results of control experiments indicated that phosphorus ylide formation and elimination take place during the reaction pathway.
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Affiliation(s)
- Wen-Kang Wang
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, PR China
| | - Fei-Yun Bao
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, PR China
| | - Si-Tian Wang
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, PR China
| | - Sheng-Yin Zhao
- College of Chemistry and Chemical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, PR China
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Nematicidal effect of Raphasatin from Raphanus sativus against Meloidogyne incognita. J Nematol 2022; 54:20220050. [DOI: 10.2478/jofnem-2022-0050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Indexed: 11/17/2022] Open
Abstract
Abstract
The nematicidal activity of radish bulb (Raphanus sativus) methanol (RME) and aqueous extracts (RAE) was tested against the second stage (J2) root knot nematode Meloidogyne incognita model. The EC50 of RME after 3 d of J2 immersion in test solutions was 312 ± 65 μg/ml. However, no activity was noted for RAE (EC50 > 1,000 μg/ml). The chemical composition analysis of the methanol extract carried out by the GC–MS technique showed that 4-methylthio-3-butenyl isothiocyanate (raphasatin) was the most abundant compound at 20%. This pure compound strongly induced J2 paralysis with an EC50 of 1.3 ± 0.2 μg/ml after 24 hr. Comparison with other 11 selected isothiocyanates with structure similarity showed that the double bond at position 3 of the alkyl side chain is important for nematicidal activity, followed by the sulfur group at position 5 and the benzyl group at position 2. In addition, raphasatin showed the highest nematicidal activity with the corresponding lowest antioxidant activity of about 92 ± 18 μg/ml. In conclusion, the results of this investigation reveal that R. sativus and its major compound raphasatin can be integrated into the pest management system.
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Organocatalytic Enantioselective Michael Reaction of Aminomaleimides with Nitroolefins Catalyzed by Takemoto's Catalyst. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227787. [PMID: 36431888 PMCID: PMC9696348 DOI: 10.3390/molecules27227787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022]
Abstract
Known as electrophiles, maleimides are often used as acceptors in Michael additions to produce succinimides. However, reactions with maleimides as nucleophiles for enantioselective functionalization are only rarely performed. In this paper, a series of bifunctional Takemoto's catalysts were used to organocatalyze the enantioselective Michael reaction of aminomaleimides with nitroolefins. The resulting products were obtained in good yields (76-86%) with up to 94% enantiomer excess (ee). The catalyst type and the substrate scope were broadened using this methodology.
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Prasanna Kumari S, Naveen B, Suresh Kumar P, Selva Ganesan S. Cu/TBHP mediated tetrahydroquinoline synthesis in water via oxidative cyclization reaction. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02462-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kim S, Kim HM, Seo HJ, Yeon J, Park AR, Yu NH, Jeong SG, Chang JY, Kim JC, Park HW. Root-Knot Nematode ( Meloidogyne incognita) Control Using a Combination of Lactiplantibacillus plantarum WiKim0090 and Copper Sulfate. J Microbiol Biotechnol 2022; 32:960-966. [PMID: 35879271 PMCID: PMC9628955 DOI: 10.4014/jmb.2205.05019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 12/15/2022]
Abstract
Lactic acid bacteria (LAB) exert antagonistic activity against root-knot nematodes, mainly by producing organic acids via carbohydrate fermentation. However, they have not yet been used for root-knot nematode (Meloidogyne incognita) control owing to a lack of economic feasibility and effectiveness. In this study, we aimed to isolate organic acid-producing LAB from kimchi (Korean traditional fermented cabbage) and evaluated their nematicidal activity. Among the 234 strains isolated, those showing the highest nematicidal activity were selected and identified as Lactiplantibacillus plantarum WiKim0090. Nematicidal activity and egg hatch inhibitory activity of WiKim0090 culture filtrate were dose dependent. Nematode mortality 3 days after treatment with 2.5% of the culture filtrate was 100%, with a 50% lethal concentration of 1.41%. In pot tests, the inhibitory activity of an L. plantarum WiKim0090-copper sulfate mixture on gall formation increased. Compared to abamectin application, which is a commercial nematicide, a higher control value was observed using the WiKim0090-copper sulfate mixture, indicating that this combination can be effective in controlling the root-knot nematode.
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Affiliation(s)
- Seulbi Kim
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea,Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ho Myeong Kim
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Hye Jeong Seo
- Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jehyeong Yeon
- Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ae Ran Park
- Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Nan Hee Yu
- Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seul-Gi Jeong
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Ji Yoon Chang
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Jin-Cheol Kim
- Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea,
J.C. Kim Phone: +82-62-530-2132 Fax: +82-62-530-2139 E-mail:
| | - Hae Woong Park
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea,Corresponding authors H.W. Park Phone: +82-62-610-1728 Fax: +82-62-610-1850 E-mail:
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Secondary Metabolites from the Endoparasitic Nematophagous Fungus Harposporium anguillulae YMF 1.01751. Microorganisms 2022; 10:microorganisms10081553. [PMID: 36013971 PMCID: PMC9415808 DOI: 10.3390/microorganisms10081553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 11/18/2022] Open
Abstract
Harposporium anguillulae, an endoparasitic nematophagous fungus (ENF), is a model fungus from which the genus Harposporium was established. It can infect nematodes via ingested conidia. In this paper, the morphology and nematode–fungus interaction between Panagrellus redivivus and H. anguillulae were observed by scanning electron microscopy (SEM). The secondary metabolites of H. anguillulae were also studied. Seven metabolites were purified and identified from an ethyl acetate extract of broth and a methanol extract of mycelium. These include a new polyketone 5-hydroxy-3-(hydroxymethyl)-6-methyl-2H-pyran-2-one (1) and six known metabolites (17R)-17-methylincisterol (2), eburicol (3), ergosterol peroxide (4), terpendole C (5), (3β,5α,9β,22E)-3,5-dihydroxy-ergosta-7,22-dien-6-one (6), and 5α,6β-epoxy-(22E,24R)-ergosta-8,22-diene- 3β,7α-diol (7). These metabolites were assayed for their activity against plant root-knot nematode, Meloidogyne incognita, and the results showed that terpendole C (5) had weak nematicidal activity but also that other compounds did not have evident activity at a concentration of 400 μg mL−1. Compound 1 exhibited an attractive effect towards P. redivivus.
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Yeon J, Park AR, Nguyen HTT, Gwak H, Kim J, Sang MK, Kim JC. Inhibition of Oomycetes by the Mixture of Maleic Acid and Copper Sulfate. PLANT DISEASE 2022; 106:960-965. [PMID: 34705489 DOI: 10.1094/pdis-07-21-1559-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Since the protective activity of the Bordeaux mixture against plant disease caused by oomycetes was discovered, copper compounds have been used for more than a century as an effective plant protection strategy. However, the application of excessive copper can cause adverse effects through long-term heavy metal accumulation in soils. Therefore, it is necessary to develop new strategies to reduce or replace copper in pesticides based on organic and low-input farming systems. Organic acids are eco-friendly. In this study, we tested the antifungal and anti-oomycete activity of maleic acid (MA) and copper sulfate (CS) against 13 plant pathogens. Treatment with a mixture of MA and CS showed strong anti-oomycetes activity against Phytophthora xcambivora, P. capsici, and P. cinnamomi. Moreover, the concentration of CS in the activated mixture of MA and CS was lower than that in the activated CS only, and the mixture showed synergy or partial synergy effects on the anti-oomycete activity. Application of a wettable powder formulation of MA and CS mixture (MCS 30WP; 26.67% MA and 3.33% CS) had excellent protective activity in pot experiments with control values of 73% Phytophthora blight on red pepper, 91% damping-off on cucumber, and 84% Pythium blight on creeping bentgrass, which are similar to those of the CS wettable powder formulation (6.67% CS) containing two times the CS content of MCS 30WP. These observations suggest that the synergistic effect of the MA and CS combination is a sustainable alternative for effective management of destructive oomycete diseases.
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Affiliation(s)
- Jehyeong Yeon
- Institute of Environmentally Friendly Agriculture, Department of Agricultural Chemistry, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ae Ran Park
- Institute of Environmentally Friendly Agriculture, Department of Agricultural Chemistry, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hang Thi Thu Nguyen
- Institute of Environmentally Friendly Agriculture, Department of Agricultural Chemistry, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hanna Gwak
- Institute of Environmentally Friendly Agriculture, Department of Agricultural Chemistry, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jiwon Kim
- Division of Agricultural Microbiology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
- Department of Agricultural Biology, College of Agricultural & Life Sciences, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Mee Kyung Sang
- Division of Agricultural Microbiology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Jin-Cheol Kim
- Institute of Environmentally Friendly Agriculture, Department of Agricultural Chemistry, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
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Zhao J, Chen M, Wu M, Shi L, Li H. Synthesis of Pentasubstituted meta‐Fluoropyridines via [4+2] Cycloaddition and Aromaticzation between Trifluoromethyl Ketimines and Maleimides. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jianbo Zhao
- East China University of Science and Technology Pharmacy CHINA
| | - Mengzi Chen
- East China University of Science and Technology Pharmacy CHINA
| | - Min Wu
- East China University of Science and Technology Pharmacy CHINA
| | - Lei Shi
- Huabao Flavours & Fragrances Co., Ltd Research CHINA
| | - Hao Li
- East China University of Science and Technology School of Pharmacy 130 Meilong Road 200237 Shanghai CHINA
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13
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Ma Z, Qiu S, Chen HC, Zhang D, Lu YL, Chen XL. Maleimide structure: a promising scaffold for the development of antimicrobial agents. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 24:1-14. [PMID: 33511872 DOI: 10.1080/10286020.2021.1877675] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Natural compounds bearing maleimide rings are a series of secondary metabolites derived from fungi/marine microorganisms, which are characterized by a general structure -CO-N(R)-CO-, and the R group is normally substituted with alkyl or aryl groups. Maleimide compounds show various biological activities such as antibacterial, antifungal, and anticancer activity. In this review, the broad-spectrum antimicrobial activities of 15 maleimide compounds from natural sources and 32 artificially synthesized maleimides were summarized, especially against Candida albicans, Sclerotinia sclerotiorum, and Staphylococcus aureus. It highlights that maleimide scaffold has tremendous potential to be utilized in the development of novel antimicrobial agents.
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Affiliation(s)
- Zhi Ma
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shuo Qiu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Han-Chi Chen
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Dong Zhang
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yue-Le Lu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiao-Long Chen
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
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14
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Zhou Z, Gao Y, Chen X, Li Y, Tian Y, Wang H, Li X, Yu X, Cao Y. One-Pot Facile Synthesis of Double-Shelled Mesoporous Silica Microcapsules with an Improved Soft-Template Method for Sustainable Pest Management. ACS APPLIED MATERIALS & INTERFACES 2021; 13:39066-39075. [PMID: 34387079 DOI: 10.1021/acsami.1c10135] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A controlled release formulation based on silica microcapsules is an ideal selection to improve both the effective utilization and duration of pesticides to decrease ecological damage. Herein, a simple and green method for preparing double-shelled microcapsules was developed using a newly prepared quaternary ammonium ionic liquid (IL) as the functional additive to entrap avermectin (Ave) in mesoporous silica nanospheres (MSNs) and tannic acid-Cu (TA-Cu) complex as the sealing agent to form the core-shell structure (Ave-IL@MSN@TA-Cu). The obtained microcapsules with an average size of 538 nm had pH-responsive release property and good stability in soil. The half-life of microcapsules (34.66 days) was 3 times that of Ave emulsifiable concentrate (EC) (11.55 days) in a test soil, which illustrated that microcapsules could protect Ave from rapid degradation by microorganisms by releasing TA, copper, and quaternary ammonium in the soil. Ave-IL@MSN@TA-Cu microcapsules had better nematicidal activity and antibacterial activity than Ave EC due to the synergistic effect of Ave, IL, and copper incorporated in the microcapsules. Pot experiments showed that the control efficacy of microcapsules was 87.10% against Meloidogyne incognita, which is better than that of Ave EC (41.94%) at the concentration of 1.0 mg/plant by the root-irrigation method after 60 days of treatment owing to the extended duration of Ave in microcapsules. The simple and green method for the preparation of double-shelled microcapsules based on natural quaternary ammonium IL would have tremendous potential for the extensive development of controlled release pesticide formulations.
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Affiliation(s)
- Zhiyuan Zhou
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yunhao Gao
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Xi Chen
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yan Li
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yuyang Tian
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Huachen Wang
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Xuan Li
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Xueyang Yu
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yongsong Cao
- College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
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Pathogenicity and Metabolites of Endoparasitic Nematophagous Fungus Drechmeria coniospora YMF1.01759 against Nematodes. Microorganisms 2021; 9:microorganisms9081735. [PMID: 34442813 PMCID: PMC8401723 DOI: 10.3390/microorganisms9081735] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 11/17/2022] Open
Abstract
Plant parasitic nematodes cause severe damage to crops. Endoparasitic nematophagous fungi (ENF) are a type of important biocontrol fungi, which can cause disease or kill nematodes by producing various spores. As a major ENF, Drechmeria coniospora displays certain potential for controlling plant-parasitic nematodes. In this study, the pathogenicity and secondary metabolites of the endoparasitic fungus D. coniospora YMF1.01759 were investigated. The strain D. coniospora YMF1.01759 had high infection efficiency against nematodes. The process of infecting nematodes by the strain was observed under an electron microscope. Here, 13 metabolites including one new compound 4(S)-butoxy-3-(butoxymethyl)-2-hydroxycyclopent-2-en-1-one (2) were isolated and identified from the fermentation products of D. coniospora YMF1.01759 cultured in a SDAY solid medium. Furthermore, a bioassay showed that 5-hydroxymethylfuran-2-carboxylic acid (1) is toxic to the root knot nematode Meloidogyne incognita and affects the hatching of its egg. Thereby, the nematicidal mortality attained 81.50% at 100 μg/mL for 48 h. Furthermore, egg hatching was inhibited at the tested concentrations, compared with water control eggs. This is the first report on the secondary metabolites of the ENF D. coniospora. The results indicated that D. coniospora could infect nematodes by spores and produce active metabolites to kill nematodes. The biological control potential of D. coniospora against nematodes was expounded further.
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Chen J, Li QX, Song B. Chemical Nematicides: Recent Research Progress and Outlook. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12175-12188. [PMID: 33079521 DOI: 10.1021/acs.jafc.0c02871] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Plant-parasitic nematodes have caused huge economic losses to agriculture worldwide and seriously threaten the sustainable development of modern agriculture. Chemical nematicides are still the most effective means to manage nematodes. However, the long-term use of organophosphorus and carbamate nematicides has led to a lack of field control efficacy and increased nematode resistance. To meet the huge market demand and slow the growth of resistance, new nematicides are needed to enter the market. The rational design and synthesis of new chemical scaffolds to screen for new nematicides is still a difficult task. We reviewed the latest research progress of nematicidal compounds in the past decade, discussed the structure-activity relationship and mechanism of action, and recommended some nematicidal active fragments. It is hoped that this review can update the recent progress on nematicide discoveries and provide new ideas for the design and mechanism of action studies of nematicides.
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Affiliation(s)
- Jixiang Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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17
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Absolute Asymmetric Synthesis Involving Chiral Symmetry Breaking in Diels–Alder Reaction. Symmetry (Basel) 2020. [DOI: 10.3390/sym12060910] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Efficient generation and amplification of chirality from prochiral substrates in the Diels–Alder reaction (DA reaction) followed by dynamic crystallization were achieved without using an external chiral source. Since the DA reaction of 2-methylfuran and various maleimides proceeds reversibly, an exo-adduct was obtained as the main product as the reaction proceeded. From single crystal X-ray structure analysis, it was found that five of ten exo-adducts gave conglomerates. When 2-methylfuran and various maleimides with a catalytic amount of TFA were reacted in a sealed tube, the exo-DA adducts were precipitated from the solution, while the reaction mixtures were continuously ground and stirred using glass beads. Deracemization occurred and chiral amplification was observed for four of the substrates. Each final enantiomeric purity was influenced by the crystal structure, and when enantiomers were included in the disorder, they reached an enantiomeric purity reflecting the ratio of the disorder. The final ee value of the 3,5-dimethylphenyl derivative after chiral amplification was 98% ee.
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18
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Fan Z, Qin Y, Liu S, Xing R, Yu H, Chen X, Li K, Li R, Wang X, Li P. The bioactivity of new chitin oligosaccharide dithiocarbamate derivatives evaluated against nematode disease (Meloidogyne incognita). Carbohydr Polym 2019; 224:115155. [PMID: 31472825 DOI: 10.1016/j.carbpol.2019.115155] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 07/13/2019] [Accepted: 07/31/2019] [Indexed: 02/02/2023]
Abstract
Plant-parasitic nematodes cause substantial crop losses annually; however, current nematicides are environmentally unfriendly and highly toxic to nontarget organisms. The development of green efficient nematicides from multifunctional natural bioactive substances such as chitin oligosaccharide (COS) is promising. In this paper, COS dithiocarbamate derivatives (COSDTC, COSDTA, COSDTB) were synthesized to increase nematicidal activity (against Meloidogyne incognita), and their structures were characterized by FTIR, NMR, TGA/DTG and elemental analysis. Furthermore, the nematicidal activities, egg hatching inhibitory activities, plant growth adjustment abilities, cytotoxicity and phytotoxicity of the derivatives were evaluated. The primary mechanism was assessed by heavy metal ion absorption and GSH-binding assays. The results showed COS dithiocarbamate derivatives could possess multiple efficacies, including high nematicidal activities and egg hatching inhibitory activities, plant growth regulating effects, low cell toxicities and phytotoxicities. Additionally, it was inferred that nematicidal activity may be correlated with GSH-binding activity but not heavy metal ion complexation. COS modification has immense potential for controlling plant-parasitic nematodes.
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Affiliation(s)
- Zhaoqian Fan
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Yukun Qin
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China.
| | - Song Liu
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Ronge Xing
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Huahua Yu
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Xiaolin Chen
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Kecheng Li
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Rongfeng Li
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Xueqin Wang
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Pengcheng Li
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China.
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19
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Influence of Solvent Environment on the Photophysical Properties of Maleamic Acid and Maleimide Derivatives. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0790-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Li B, Ren Y, Zhang DX, Xu S, Mu W, Liu F. Modifying the Formulation of Abamectin To Promote Its Efficacy on Southern Root-Knot Nematode (Meloidogyne incognita) under Blending-of-Soil and Root-Irrigation Conditions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:799-805. [PMID: 29240417 DOI: 10.1021/acs.jafc.7b04146] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The southern root-knot nematode (RKN), Meloidogyne incognita, is the most disastrous and prevalent nematode threat to the production of crops, especially vegetables. In the current study, second-stage juveniles (J2) of M. incognita were collected from five regions near Tai'an, China. The toxicity of abamectin to these J2 had insignificant differences, with LC50 values of approximately 2 mg/L. Two pesticide application approaches (i.e., blending-of-soil and root-irrigation) were adopted in pot experiments; blending-of-soil was more beneficial for promoting the efficacy of abamectin on the RKN of tomatoes. Abamectin microcapsule suspension exhibited superiority to emulsifiable concentrate (EC) at dosages of 5 and 10 mg active ingredient per plant integrating efficacy, root length, plant height, the fresh weight of roots, and the fresh weight of stems + leaves. Adsorption, leaching, and mobility of abamectin in the soil also verified bioactivity test results. Modifying the formulation of abamectin can promote its efficacy on RKN under different application approaches.
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Affiliation(s)
- Beixing Li
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
| | - Yupeng Ren
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
- Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
| | - Da-Xia Zhang
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
| | - Shuangyu Xu
- Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
| | - Wei Mu
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
- Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
| | - Feng Liu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
- Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University , Tai'an, Shandong 271018, People's Republic of China
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21
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Dependence of color change of vinylethylene carbonate copolymers having N -substituted maleimides on chemical structure by acid-base switching in solution and solid state. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Abstract
The present study describes the nematicidal activity of ten selected phenolic derivatives using the root knot nematode, Meloidogyne incognita, model. Nematicidal activity was then correlated with the anti-oxidant power. The highest nematicidal activity was recorded for p-nitrophenol followed by m-nitrophenol, o-nitrophenol and p-bromophenol, with an EC50 after 1 day of immersion of about 0.70 ± 0.64, 8.14 ± 5.49, 15.79 ± 10.81 and 25.92 ± 11.37 μg/ml, respectively. The structure-activity relationship indicates that the nitro-group at position 4 on the phenolic ring (p-nitrophenol) is very important for nematicidal activity, followed by that at position 2 (o-nitrophenol) and position 3 (m-nitrophenol). p-Nitrophenol showed the highest nematicidal activity with the corresponding lowest anti-oxidant activity of about 97 ± 20 μg/ml. In conclusion, these findings suggest that phenolic derivatives could be considered as potent nematicidal agents and be integrated in the pest-management system.
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Eloh K, Sasanelli N, Maxia A, Caboni P. Untargeted Metabolomics of Tomato Plants after Root-Knot Nematode Infestation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5963-8. [PMID: 27389052 DOI: 10.1021/acs.jafc.6b02181] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
After 2 months from the infestation of tomato plants with the root-knot nematode (RKN) Meloidogyne incognita, we performed a gas chromatography-mass spectrometry untargeted fingerprint analysis for the identification of characteristic metabolites and biomarkers. Principal component analysis, and orthogonal projections to latent structures discriminant analysis suggested dramatic local changes of the plant metabolome. In the case of tomato leaves, β-alanine, phenylalanine, and melibiose were induced in response to RKN stimuli, while ribose, glycerol, myristic acid, and palmitic acid were reduced. For tomato stems, upregulated metabolites were ribose, sucrose, fructose, and glucose, while fumaric acid and glycine were downregulated. The variation in molecular strategies to the infestation of RKNs may play an important role in how Solanum lycopersicum and other plants adapt to nematode parasitic stress.
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Affiliation(s)
- Kodjo Eloh
- Department of Life and Environmental Sciences, University of Cagliari , via Ospedale 72, 09124 Cagliari, Italy
| | - Nicola Sasanelli
- Institute for Sustainable Plant Protection, National Research Council (CNR) , via G. Amendola 122/D, 70126 Bari, Italy
| | - Andrea Maxia
- Department of Life and Environmental Sciences, University of Cagliari , via Ospedale 72, 09124 Cagliari, Italy
| | - Pierluigi Caboni
- Department of Life and Environmental Sciences, University of Cagliari , via Ospedale 72, 09124 Cagliari, Italy
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