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Halder T, Ghosh R, Sahoo A, Swain SS, Hore R, Ghosh S, Saha P, Maity J. A short synthesis of carbohydrate derived N-benzyl aminocyclopentitols through N-O bond cleavage of the corresponding isoxazolidine derivatives: Evaluation of their anticancer properties using in vitro and in silico studies. Carbohydr Res 2025; 552:109465. [PMID: 40186949 DOI: 10.1016/j.carres.2025.109465] [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: 11/30/2024] [Revised: 03/10/2025] [Accepted: 03/21/2025] [Indexed: 04/07/2025]
Abstract
A short synthesis of a potent glycosidase inhibitor N-benzyl-β-D-gluco aminocyclopentitol along with its 2-deoxy, and orthogonally protected 2-O-benzyl, 1,2,3-tri-O-benzyl and 1,2,3-tri-O-acetyl analogues through carbohydrate derived cyclopentane-fused isoxazolidine derivatives has been described herein. The key steps involve NaI mediated vinylation of d-glucose derived 5,6-di-O-mesylated compounds in sealed tube to produce 5,6-dideoxy-l,2-O-isopropylidene-α-D-xylo-hexo-5-enofuranos derivatives in very good yields. Subsequent acetonide deprotection and stereoselective intramolecular nitrone cycloaddition (INC) reaction involving C-4-vinyl functionalities and the latent aldehyde moiety at C-1 yielded various cyclopentano-isoxazolidines. The N-O bond cleavage of the isoxazolidine rings produced the targeted aminocyclopentitols. In vitro anticancer activities of the isoxazolidines and N-benzyl aminocyclopentitols were performed and found only 1,2,3-tri-O-benzyl analogue (20c) of N-benzyl-β-D-gluco aminocyclopentitols emerged as potent anticancer agent with IC50 value 54.90 μM. Furthermore, the molecular docking study confirmed that 20c, compared with the other derivatives, scores higher binding affinity for all the targeted receptors, HSP90, PLK1, and TOP2A.
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Affiliation(s)
- Tapas Halder
- Department of Chemistry, Ramakrishna Mission Residential College, Kolkata, 700103, West Bengal, India
| | - Rituparna Ghosh
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37, S.P. Mukherjee Road, Kolkata, 70026, West Bengal, India
| | - Alaka Sahoo
- Department of Skin & VD, Institute of Medical Sciences and SUM Hospital, Siksha 'O' Anusandhan University, Bhubaneswar, 751003, Odisha, India; Research and Development Division, Salixiras Research Private Limited, Bhubaneswar, 751012, Odisha, India
| | - Shasank Sekhar Swain
- Research and Development Division, Salixiras Research Private Limited, Bhubaneswar, 751012, Odisha, India; BRIC-Institute of Life Sciences, Nalco Square, Bhubaneswar, 751023, Odisha, India
| | - Ratul Hore
- Department of Chemistry, Ramakrishna Mission Residential College, Kolkata, 700103, West Bengal, India
| | - Sourav Ghosh
- Department of Chemistry, Ramakrishna Mission Residential College, Kolkata, 700103, West Bengal, India
| | - Prosenjit Saha
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37, S.P. Mukherjee Road, Kolkata, 70026, West Bengal, India.
| | - Joykrishna Maity
- Department of Chemistry, Ramakrishna Mission Residential College, Kolkata, 700103, West Bengal, India.
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Tabassum A, Kumari D, Bhore HB, Palmo T, Venkatesan I, Samanta J, Katare AK, Singh K, Bharitkar YP. Synthesis of novel spiroisoxazolidino hybrids of alantolactone and isoalantolactone via 1,3 dipolar nitrone cycloaddition and its antimicrobial Evaluation. Bioorg Chem 2025; 154:108087. [PMID: 39729768 DOI: 10.1016/j.bioorg.2024.108087] [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: 11/19/2024] [Revised: 12/17/2024] [Accepted: 12/19/2024] [Indexed: 12/29/2024]
Abstract
Alantolactone and isoalantolactone are two isomeric sesquiterpene lactones that were isolated from Innula recemosa. Here, we are used for the semisynthesis of novel isoxazolidine hybrids of alantolactone and isoalantolactone through a two-step process: nitrone synthesis followed by nitrone 1,3-dipolar cycloaddition. The formation of the cycloadduct was well characterized via modern spectroscopic techniques such as HRMS, 1H NMR, 13C NMR, DEPT-90, DEPT-135, and 2D NMR. This study also includes the synthesis of dinitrone with glyoxal and terephthalaldehyde, which is used for the dinitrone cycloadduct of alantolactone and isoalantolactone. Both nitrone cycloaddition and dinitrone cycloaddition proceed with high regio- and diastereoselectivity, resulting in the formation of only one isomer. The formation of the α-cycloadducts and the absolute configuration were established through 2D NMR and single-crystal X-ray diffraction analysis. The antimicrobial activity of all synthesized compounds was evaluated against a panel of Gram-positive and Gram-negative pathogens. Compounds 3f and 4f exhibited potential antimicrobial activity against drug-sensitive and -resistant Staphylococcus aureus strains, with minimum inhibitory concentrations ranging from 6 to 10 µM. A time-kill kinetics assay suggested that compounds 3f and 4f are bacteriostatic. Furthermore, scanning electron microscopy analysis confirmed that compounds 3f and 4f cause significant morphological alternations and exert potent antibacterial effects by causing substantial cellular damage.
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Affiliation(s)
- Aliya Tabassum
- CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Diksha Kumari
- CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Harshad B Bhore
- CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
| | - Tashi Palmo
- CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Initha Venkatesan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Jayanta Samanta
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Anil Kumar Katare
- CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kuljit Singh
- CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Yogesh P Bharitkar
- CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Fu Y, Du X, Wang X, Cheng F, Peng Q, Liu X, Miao J. Biological activity and systemic translocation of the new tetrazolyloxime fungicide picarbutrazox against plant-pathogenic oomycetes. PEST MANAGEMENT SCIENCE 2024; 80:6511-6518. [PMID: 39180167 DOI: 10.1002/ps.8388] [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: 05/29/2024] [Revised: 07/25/2024] [Accepted: 08/09/2024] [Indexed: 08/26/2024]
Abstract
BACKGROUND Picarbutrazox is a new tetrazolyloxime fungicide discovered in 2014 by Nippon Soda. It is mostly used to protect against Phytophthora spp. and Pythium spp. However, little is known of its inhibition spectrum, protective and curative activity, and systemic translocation in plants. RESULTS While picarbutrazox did not show obvious antifungal activity, it exhibited significant activity against oomycetes, including Phytophthora spp., Pythium spp. and Phytopythium spp.. The effective concentration for 50% growth inhibition (EC50) values of picarbutrazox against 16 oomycetes ranged from 3.1 × 10-4 and 7.27 × 10-3 μg mL-1. Furthermore, picarbutrazox could markedly inhibited the mycelial development, sporangia production, zoospore release, and cyst germination of Phytophthora capsici, with EC50 values of 1.34 × 10-3, 1.11 × 10-3, 4.85 × 10-3, and 5.88 × 10-2 μg mL-1, respectively. Additionally, under greenhouse conditions, the protective and curative activities of picarbutrazox at 200 mg L-1 (100%, 41.03%) against the P. capsici infection in peppers were higher than those of the reference fungicide dimethomorph at 200 mg L-1 (77.52%, 36.15%). High-performance liquid chromatography analysis confirmed that picarbutrazox showed excellent systemic translocation in pepper plants. CONCLUSION The results showed that picarbutrazox markedly inhibited the important plant oomycete pathogens including Phytophthora spp., Pythium spp. and Phytopythium spp.. It also displayed excellent protective, curative and systemic translocation activity. Picarbutrazox thus has significant potential for preventing and controlling diseases caused by oomycetes. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yixin Fu
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xiaoran Du
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xixi Wang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Fei Cheng
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Qin Peng
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xili Liu
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, China
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Jianqiang Miao
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, China
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Chen L, Sun BX, Zhao Y, Miao ZY. Molecular Mechanisms and Biological Characteristics of Botrytis cinerea Field Isolate Resistance to Pyrisoxazole in Liaoning Province. PLANT DISEASE 2024; 108:866-876. [PMID: 37682225 DOI: 10.1094/pdis-04-23-0743-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: 09/09/2023]
Abstract
Botrytis cinerea is a broad-host-range necrotrophic phytopathogen responsible for serious diseases in leading crops worldwide. The novel sterol 14α-demethylase inhibitor (DMI) pyrisoxazole was recently registered for the control of tomato gray mold caused by B. cinerea in China. One hundred fifty-seven isolates of B. cinerea were collected from tomato greenhouses in 14 cities of Liaoning Province from 2016 to 2021 and examined for sensitivity to pyrisoxazole, with a mean EC50 value of 0.151 μg/ml. Three highly resistant isolates, XD-5, DG-4, and GQ-3, were screened, and the EC50 values were 0.734, 0.606, and 0.639 μg/ml with corresponding resistance factors of 12.88, 10.63, and 11.21, respectively. Compared with field-sensitive strains, the highly resistant isolate XD-5 exhibited fitness defects in traits, including mycelial growth, conidial production, and pathogenicity, but DG-4 and GQ-3 did not experience fitness costs. Positive cross-resistance was observed only between pyrisoxazole and the DMIs tebuconazole and prochloraz but not between pyrisoxazole and the non-DMIs iprodione, procymidone, pyrimethanil, fludioxonil, fluazinam, and fluopyram. Sequence alignment of the CYP51 gene indicated that three point mutations were observed in the highly resistant mutant, namely, V24I in XD-5, G461S in GQ-3, and R464K in DG-4. When exposed to pyrisoxazole, the induced expression levels of the ABC transporter AtrD and MFS transporter Mfs1 increased in the resistant isolates compared with those in the sensitive isolates, whereas the expression level of the CYP51 gene did not change significantly. Molecular docking suggested that the G461S and R464K mutations both led to a decrease in the binding energy between CYP51 and pyrisoxazole, whereas no change was found with the V24I mutation. Thus, two point mutations in the CYP51 protein combined with induced expression of the Mfs1 and AtrD genes appeared to mediate the pyrisoxazole resistance of the highly resistant mutants DG-4 and GQ-3, while the overexpression of the Mfs1 and AtrD genes was responsible for the highly resistant mutant XD-5.
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Affiliation(s)
- Le Chen
- Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110866, People's Republic of China
| | - Bai-Xin Sun
- Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110866, People's Republic of China
| | - Yang Zhao
- Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110866, People's Republic of China
| | - Ze-Yan Miao
- Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110866, People's Republic of China
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Yao N, Li W, Hu L, Fang N. Do mould inhibitors alter the microbial community structure and antibiotic resistance gene profiles on textiles? THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 911:168808. [PMID: 38000736 DOI: 10.1016/j.scitotenv.2023.168808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 11/26/2023]
Abstract
Mould inhibitors are closely associated with human health and have been extensively applied to textiles to prevent mould and insect infestations. However, the impact of these mould inhibitors on the microbial community structure on textiles and antibiotic resistance gene (ARG) profiles remains largely unexplored. In this study, testing techniques, including high-throughput quantitative PCR and Illumina sequencing, were employed to analyse the effects of three types of mould inhibitors -para-dichlorobenzene (PDCB), naphthalene, and natural camphor balls-on the composition of microbial communities and ARG profiles. The microbial mechanisms underlying these effects were also investigated. The experiments revealed that PDCB reduced the diversity of bacterial communities on textiles, whereas naphthalene and natural camphor balls exerted relatively minor effects. In contrast with bacterial diversity, PDCB enhanced the diversity of fungal communities on textiles, but significantly reduced their abundance. Naphthalene had the least impact on fungal communities; however, it notably increased the relative abundance of Basidiomycota. All three types of mould inhibitors substantially altered ARG profiles. Potential mechanisms responsible for the alterations in ARG profiles include microbial community succession and horizontal gene transfer mediated by mobile genetic elements. PDCB prominently increased the abundance of ARGs, mainly attributable to the relative enrichment of potential hosts (including certain γ-Proteobacteria and Bacillales) for specific ARGs. Thus, this study has important implications for the selection of mould inhibitors, as well as the assessment of microbial safety in textiles.
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Affiliation(s)
- Ningyuan Yao
- College of Science, The Australian National University, Canberra, ACT 2601, Australia.
| | - Wei Li
- CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China
| | - Lanfang Hu
- CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China
| | - Nan Fang
- CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China
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Tetz V, Kardava K, Krasnov K, Vecherkovskaya M, Tetz G. Antifungal activity of a novel synthetic polymer M451 against phytopathogens. Front Microbiol 2023; 14:1176428. [PMID: 37275130 PMCID: PMC10235499 DOI: 10.3389/fmicb.2023.1176428] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/09/2023] [Indexed: 06/07/2023] Open
Abstract
Phytopathogenic fungi are the predominant causal agents of plant diseases. Available fungicides have substantial disadvantages, such as being insufficiently effective owing to intrinsic tolerance and the spread of antifungal resistance accumulating in plant tissues, posing a global threat to public health. Therefore, finding a new broad-spectrum fungicide is a challenge to protect plants. We studied the potency of a novel antimicrobial agent, M451, a 1,6-diaminohexane derivative, against different phytopathogenic fungi of the Ascomycota, Oomycota, and Basidiomycota phyla. M451 exhibited significant antifungal activity with EC50 values from 34-145 μg/mL. The minimal fungicidal concentration against Fusarium oxysporum ranged from 4 to 512 μg/mL depending on the exposure times of 5 min to 24 h. M451 has the highest activity and significantly lower exposure times compared to different polyene, azole, and phenylpyrrole antifungals. The conidial germination assay revealed that M451 induced 99 and 97.8% inhibition against F. oxysporum within 5 min of exposure to 5,000 and 500 μg/mL, respectively. Germ tube elongation, spore production, and spore germination were also significantly inhibited by M451 at concentrations of ≥50 μg/mL. Based on the broad spectrum of antifungal effects across different plant pathogens, M451 could be a new chemical fungicide for plant disease management.
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Affiliation(s)
| | | | | | | | - George Tetz
- Human Microbiology Institute, New York, NY, United States
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Gharpure SJ, Vishwakarma DS, Hajam SA. Lewis-Acid-Catalyzed Reductive Hydroalkoxylation of Propargylic N-Hydroxylamines Gives Stereoselective Access to Isoxazolidines. Org Lett 2023; 25:2525-2530. [PMID: 37015053 DOI: 10.1021/acs.orglett.3c00690] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
Lewis-acid-catalyzed 5-endo-dig reductive hydroalkoxylation cascade on propargylic N-hydroxylamine gave expedient, stereoselective access to isoxazolidine derivatives. The developed method provides a new approach toward the synthesis of isoxazolidine, a biologically privileged scaffold. The synthetic potential of the developed methodology was demonstrated by synthesizing 1,3-aminoalcohol, 4-aminotetrahydropyran, and sedamine natural products.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | | | - Showkat A Hajam
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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Cang T, Diao Z, Di S, Liu Z, Wang Z, Zhao H, Xu H, Zhang C, Qi P, Wang X. Stereoselective bioaccumulation and dissipation of pyrisoxazole in earthworm-soil microcosm. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158472. [PMID: 36075432 DOI: 10.1016/j.scitotenv.2022.158472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/13/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Pyrisoxazole is a chiral fungicide with high sterilizing activity to the plant pathogenic bacteria. It has two chiral C atoms, which bring four stereoisomers. The present work was the first time to explore the stereoselective bioaccumulation behavior of pyrisoxazole in earthworms by chiral liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (LC-Q-TOF/MS). The absolute configurations of pyrisoxazole stereoisomers were confirmed by circular dichroism (CD) coupled with calculated electronic circular dichroism (ECD) method, and the elution order in Lux Cellulose-3 column was as follows: (-)-3S, 5R-pyrisoxazole, (+)-3R, 5S-pyrisoxazole, (+)-3S, 5S-pyrisoxazole and (-)-3R, 5R-pyrisoxazole. The recoveries of pyrisoxazole stereoisomers in earthworm and soil samples ranged from 80.8 % to 101 % with the RSD lower than 6.3 %. In bioaccumulation progress, (+)-3R, 5S-pyrisoxazole was accumulated preferentially in earthworms, and the bioaccumulation concentrations of high-activity (-)-3S, 5R-pyrisoxazole were the lowest. There were no stereoselective bioaccumulation between (+)-3S, 5S-pyrisoxazole and (-)-3R, 5R-pyrisoxazole, while there was diastereoselectivity between Z-pyrisoxazole and E-pyrisoxazole with higher E-pyrisoxazole concentrations. In the whole bioaccumulation process, the BAF values of (+)-3R, 5S-pyrisoxazole were significantly higher than (-)-3S, 5R-pyrisoxazole, and the BAF values of (-)-3S, 5R-pyrisoxazole were the lowest. The dissipation of pyrisoxazole stereoisomers in the artificial soil was very slow and had no stereoselectivity, and the existence of earthworms had little effects on the dissipation of pyrisoxazole stereoisomers, which indicated that the stereoselective behaviors of pyrisoxazole in earthworms were caused by the stereoselective enrichment and dissipation of earthworms themselves. Taken together, (-)-3S, 5R-pyrisoxazole was recommend as a commercial product. This study played a positive role in guiding the development of environmentally friendly pesticides and provided database for the environmental and biological risk assessment of pyrisoxazole.
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Affiliation(s)
- Tao Cang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Ziyang Diao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China; College of Food Science & Engineering, Hainan University, No. 158 Renmin Avenue, Haikou, 570100, PR China
| | - Shanshan Di
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Zhenzhen Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Zhiwei Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Huiyu Zhao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Hao Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Chenghui Zhang
- College of Food Science & Engineering, Hainan University, No. 158 Renmin Avenue, Haikou, 570100, PR China
| | - Peipei Qi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China.
| | - Xinquan Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China.
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Li X, Yang J, Jiang Q, Tang L, Xue Z, Wang H, Zhao D, Miao J, Liu X. Baseline sensitivity and control efficacy of a new QiI fungicide, florylpicoxamid, against Botrytis cinerea. PEST MANAGEMENT SCIENCE 2022; 78:5184-5190. [PMID: 36136938 DOI: 10.1002/ps.7137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/06/2022] [Accepted: 08/19/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Gray mold caused by Botrytis cinerea is an airborne plant pathogen with a necrotrophic lifestyle that infects more than 200 crops worldwide. Florylpicoxamid is a second-generation picolinamide fungicide inspired by a natural product. Florylpicoxamid targets the Qi site of the mitochondrial cytochrome bc1 complex and is currently being registered in China for the control of gray mold in a variety of crops. Although a broad spectrum of activity and attributes have been reported for florylpicoxamid, little is known about its effectiveness against gray mold or its protective and curative properties. RESULTS Florylpicoxamid exhibited substantial inhibitory activity against 12 tested species of plant-pathogenic fungi, with effective concentration for 50% growth inhibition (EC50 ) values ranging from 0.017 to 2.096 μg ml-1 . A total of 129 isolates of B. cinerea from ten regions were tested for their sensitivity to florylpicoxamid, and the mean EC50 value was 0.04 ± 0.017 μg ml-1 . Furthermore, florylpicoxamid was observed to substantially inhibit all developmental stages of B. cinerea, with mycelial development, sclerotium germination, germ tube elongation and conidial germination being restrained with an EC50 value of 0.051 ± 0.0072, 0.012 ± 0.0069, 0.019 ± 0.0041 and 0.0062 ± 0.0007 μg ml-1 , respectively. No cross-resistance was observed between florylpicoxamid and quinone outside inhibitor (QoI), methyl benzimidazole carbamates or succinate dehydrogenase inhibitor. Florylpicoxamid also exhibited protective and curative activity against the development of B. cinerea infection in tests on tomato fruits. At application rates of 90, 112.5 and 135 g a.i. ha-1 , florylpicoxamid was also observed to provide more-effective control than boscalid (300 g a.i. ha-1 ). CONCLUSION This study demonstrated that the novel fungicide florylpicoxamid exhibits strong inhibitory activity against B. cinerea, regardless of the resistance profiles of those isolates to tested fungicides with different modes of action. This makes florylpicoxamid a powerful new solution to optimize gray mold control and manage fungicide resistance. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xiong Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Jikun Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Qinghong Jiang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Lijun Tang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Ziwei Xue
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | | | | | - Jianqiang Miao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xili Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
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10
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Baeva LA, Biktasheva LF, Fatykhov AA, Galimzyanova NF. Synthesis and Fungicidal Activity of 4-[(Alkylsulfanyl)methyl]-3,5-dimethylisoxazoles. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427222070151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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11
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Harutyunyan N, Kushugulova A, Hovhannisyan N, Pepoyan A. One Health Probiotics as Biocontrol Agents: One Health Tomato Probiotics. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11101334. [PMID: 35631758 PMCID: PMC9145216 DOI: 10.3390/plants11101334] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/08/2022] [Accepted: 05/08/2022] [Indexed: 05/06/2023]
Abstract
Tomato (Lycopersicon esculentum) is one of the most popular and valuable vegetables in the world. The most common products of its industrial processing in the food industry are juice, tomato paste, various sauces, canned or sun-dried fruits and powdered products. Tomato fruits are susceptible to bacterial diseases, and bacterial contamination can be a risk factor for the safety of processed tomato products. Developments in bioinformatics allow researchers to discuss target probiotic strains from an existing large number of probiotic strains for any link in the soil-plant-animal-human chain. Based on the literature and knowledge on the "One Health" concept, this study relates to the suggestion of a new term for probiotics: "One Health probiotics", beneficial for the unity of people, animals, and the environment. Strains of Lactiplantibacillus plantarum, having an ability to ferment a broad spectrum of plant carbohydrates, probiotic effects in human, and animal health, as well as being found in dairy products, vegetables, sauerkraut, pickles, some cheeses, fermented sausages, fish products, and rhizospheric soil, might be suggested as one of the probable candidates for "One Health" probiotics (also, for "One Health-tomato" probiotics) for the utilization in agriculture, food processing, and healthcare.
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Affiliation(s)
- Natalya Harutyunyan
- Food Safety and Biotechnology Department, Armenian National Agrarian University, 74 Teryan St., Yerevan 0009, Armenia;
| | - Almagul Kushugulova
- Laboratory of Human Microbiome and Longevity, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave., Nur-Sultan 010000, Kazakhstan;
| | - Narine Hovhannisyan
- Plant Origin Raw Material Processing Technology Department, Armenian National Agrarian University, 74 Teryan St., Yerevan 0009, Armenia;
| | - Astghik Pepoyan
- Food Safety and Biotechnology Department, Armenian National Agrarian University, 74 Teryan St., Yerevan 0009, Armenia;
- Correspondence: ; Tel.: +374-91-432-493
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12
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Jia L, Jin XY, Zhao LX, Fu Y, Ye F. Research Progress in the Design and Synthesis of Herbicide Safeners: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5499-5515. [PMID: 35473317 DOI: 10.1021/acs.jafc.2c01565] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Detoxification plays an important role in herbicide action. Herbicide safeners selectively protect crops from herbicide injury without reducing the herbicidal efficiency against the target weeds. With the large-scale use of herbicides, herbicide safeners have been widely used in sorghum, wheat, rice, corn, and other crops. In recent years, an increasing number of unexpected new herbicide safeners have been designed. The varieties, structural characteristics, uses, and synthetic routes of commercial herbicide safeners are reviewed in this paper. The design ideas and structural characteristics of novel herbicide safeners are summarized, which provide a basis for the design of bioactive molecules as new herbicide safeners in the future.
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Affiliation(s)
- Ling Jia
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Xin-Yu Jin
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
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Gao Y, Liu Y, He L, Zhu J, Wu B, Liu F, Mu W. Activity of the Novel Fungicide Mefentrifluconazole Against Colletotrichum scovillei. PLANT DISEASE 2021; 105:1522-1530. [PMID: 33237845 DOI: 10.1094/pdis-10-20-2157-re] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The prevalence and destructiveness of anthracnose, caused by Colletotrichum scovillei, in pepper production regions seriously affects pepper yield and quality. Mefentrifluconazole, the first of the isopropanol-azole subgroup of triazole fungicides, was introduced for the control of pepper anthracnose. However, the growth characteristics of pepper fruit and rapid spread of anthracnose suggest that the fungicide application method must be optimized to enhance fungicide efficacy. The sensitivity of C. scovillei to mefentrifluconazole was determined by mycelial growth and germ tube elongation assays using 157 single-spore isolates with mean 50% effective concentration values of 0.462 ± 0.138 and 0.359 ± 0.263 mg/liter, respectively. The in vivo data also showed that mefentrifluconazole had favorable protective and curative effects against pepper anthracnose. Mefentrifluconazole significantly affected C. scovillei infection on pepper by reducing appressorium formation and sporulation, shriveling spores and germ tubes, and causing the abnormal development of appressoria and conidiophores. Mefentrifluconazole could move acropetally, horizontally, and basipetally in pepper plants. Compared with a knapsack sprayer, mefentrifluconazole applied by mist sprayer exhibited significantly better activity against pepper anthracnose. Additionally, as the spray volume increased from 45 to 150 liters/ha, the control efficacy of mefentrifluconazole first increased and then tended to be steady, with an optimal spray volume of 90 liters/ha. The difference in disease control efficacy was related to the deposition and droplet distribution of mefentrifluconazole on the pepper fruit. These results provide scientific guidance for the application of mefentrifluconazole in pepper fields and improved fungicide utilization.
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Affiliation(s)
- Yangyang Gao
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
| | - Yang Liu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
| | - Lifei He
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
| | - Jiamei Zhu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
| | - Buhua Wu
- Jinan Tianbang Chemical Co. Ltd., Jinan, Shandong 251600, P.R. China
| | - Feng Liu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
| | - Wei Mu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China
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14
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Hilgers F, Habash SS, Loeschcke A, Ackermann YS, Neumann S, Heck A, Klaus O, Hage-Hülsmann J, Grundler FMW, Jaeger KE, Schleker ASS, Drepper T. Heterologous Production of β-Caryophyllene and Evaluation of Its Activity against Plant Pathogenic Fungi. Microorganisms 2021; 9:microorganisms9010168. [PMID: 33466643 PMCID: PMC7828715 DOI: 10.3390/microorganisms9010168] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 11/16/2022] Open
Abstract
Terpenoids constitute one of the largest and most diverse groups within the class of secondary metabolites, comprising over 80,000 compounds. They not only exhibit important functions in plant physiology but also have commercial potential in the biotechnological, pharmaceutical, and agricultural sectors due to their promising properties, including various bioactivities against pathogens, inflammations, and cancer. In this work, we therefore aimed to implement the plant sesquiterpenoid pathway leading to β-caryophyllene in the heterologous host Rhodobacter capsulatus and achieved a maximum production of 139 ± 31 mg L-1 culture. As this sesquiterpene offers various beneficial anti-phytopathogenic activities, we evaluated the bioactivity of β-caryophyllene and its oxygenated derivative β-caryophyllene oxide against different phytopathogenic fungi. Here, both compounds significantly inhibited the growth of Sclerotinia sclerotiorum and Fusarium oxysporum by up to 40%, while growth of Alternaria brassicicola was only slightly affected, and Phoma lingam and Rhizoctonia solani were unaffected. At the same time, the compounds showed a promising low inhibitory profile for a variety of plant growth-promoting bacteria at suitable compound concentrations. Our observations thus give a first indication that β-caryophyllene and β-caryophyllene oxide are promising natural agents, which might be applicable for the management of certain plant pathogenic fungi in agricultural crop production.
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Affiliation(s)
- Fabienne Hilgers
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University Düsseldorf, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; (F.H.); (A.L.); (Y.S.A.); (O.K.); (J.H.-H.); (K.-E.J.)
| | - Samer S. Habash
- INRES—Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten-Str. 13, 53115 Bonn, Germany; (S.S.H.); (S.N.); (F.M.W.G.)
| | - Anita Loeschcke
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University Düsseldorf, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; (F.H.); (A.L.); (Y.S.A.); (O.K.); (J.H.-H.); (K.-E.J.)
| | - Yannic Sebastian Ackermann
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University Düsseldorf, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; (F.H.); (A.L.); (Y.S.A.); (O.K.); (J.H.-H.); (K.-E.J.)
| | - Stefan Neumann
- INRES—Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten-Str. 13, 53115 Bonn, Germany; (S.S.H.); (S.N.); (F.M.W.G.)
| | - Achim Heck
- Institute of Bio- and Geosciences (IBG-1: Biotechnology) Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany;
| | - Oliver Klaus
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University Düsseldorf, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; (F.H.); (A.L.); (Y.S.A.); (O.K.); (J.H.-H.); (K.-E.J.)
| | - Jennifer Hage-Hülsmann
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University Düsseldorf, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; (F.H.); (A.L.); (Y.S.A.); (O.K.); (J.H.-H.); (K.-E.J.)
| | - Florian M. W. Grundler
- INRES—Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten-Str. 13, 53115 Bonn, Germany; (S.S.H.); (S.N.); (F.M.W.G.)
| | - Karl-Erich Jaeger
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University Düsseldorf, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; (F.H.); (A.L.); (Y.S.A.); (O.K.); (J.H.-H.); (K.-E.J.)
- Institute of Bio- and Geosciences (IBG-1: Biotechnology) Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany;
| | - A. Sylvia S. Schleker
- INRES—Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten-Str. 13, 53115 Bonn, Germany; (S.S.H.); (S.N.); (F.M.W.G.)
- Correspondence: (A.S.S.S.); (T.D.)
| | - Thomas Drepper
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University Düsseldorf, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; (F.H.); (A.L.); (Y.S.A.); (O.K.); (J.H.-H.); (K.-E.J.)
- Correspondence: (A.S.S.S.); (T.D.)
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15
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Mair WJ, Thomas GJ, Dodhia K, Hills AL, Jayasena KW, Ellwood SR, Oliver RP, Lopez-Ruiz FJ. Parallel evolution of multiple mechanisms for demethylase inhibitor fungicide resistance in the barley pathogen Pyrenophora teres f. sp. maculata. Fungal Genet Biol 2020; 145:103475. [DOI: 10.1016/j.fgb.2020.103475] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/11/2020] [Accepted: 09/25/2020] [Indexed: 10/23/2022]
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16
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Guo KL, Zhao LX, Wang ZW, Gao YC, Li JJ, Gao S, Fu Y, Ye F. Design, Synthesis, and Bioevaluation of Substituted Phenyl Isoxazole Analogues as Herbicide Safeners. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:10550-10559. [PMID: 32886503 DOI: 10.1021/acs.jafc.0c01867] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Herbicide safeners enhance herbicide detoxification in crops without affecting target weed sensitivity. To enhance crop tolerance to the toxicity-related stress caused by the herbicide acetochlor (ACT), a new class of substituted phenyl isoxazole derivatives was designed by an intermediate derivatization method as herbicide safeners. Microwave-assisted synthesis was used to prepare the phenyl isoxazole analogues, and all of the structures were confirmed via IR, 1H NMR, 13C NMR, and HRMS. Compound I-1 was further characterized by X-ray diffraction analysis. Bioassay results showed that most of the obtained compounds provided varying degrees of safening against ACT-induced injury by increasing the corn growth recovery, glutathione content, and glutathione S-transferase activity. In particular, compound I-20 showed excellent safener activity against ACT toxicity, comparable to that of the commercial safener benoxacor. Gaussian calculations have been performed and the results indicated that the nucleophilic ability of compound I-20 is higher than that of benoxacor, thus the activity is higher than that of benoxacor. These findings demonstrate that phenyl isoxazole derivatives possess great potential for protective management in cornfields.
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Affiliation(s)
- Ke-Liang Guo
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Zi-Wei Wang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying-Chao Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Juan-Juan Li
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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17
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Kleczewski NM, Butts-Willmsmeyer C, Scanlan C. Assessing the Curative and Protective Impacts of Select Fungicides for Control of Powdery Mildew of Wheat. PLANT DISEASE 2020; 104:1195-1200. [PMID: 32065565 DOI: 10.1094/pdis-08-19-1754-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: 06/10/2023]
Abstract
Powdery mildew, caused by the obligate fungal pathogen Blumeria graminis, has been increasing in incidence and severity on wheat in the Chesapeake Bay region of the mid-Atlantic United States. Although fungicides are used for in-season management of powdery mildew, no studies to date have assessed the ability of these products to control disease after pathogen arrival/infection (curative activity) and the duration of disease control provided after fungicide application (protective activity) under controlled conditions. Five commercially available fungicide products, including Caramba, Stratego YLD, Priaxor, Prosaro, and Trivapro, were applied at either 3 or 5 days after inoculation with B. graminis spores to assess curative activity. In a separate study, protective activity for these fungicides was assessed by applying fungicides and inoculating with B. graminis spores the same day and 21 and 42 days after fungicide application. All fungicides reduced powdery mildew severity on foliage compared with nontreated controls. Priaxor provided 11 to 18% less activity than other fungicides when applied curatively. All products provided protective control up to 42 days after inoculation, with Stratego YLD and Priaxor providing the greatest level of control at 68 and 56%, respectively. Our data indicate that different fungicides can have subtle differences in overall efficacy profiles that may translate to improved control or an extended control window in some situations, but all tested products provide very good to excellent control of powdery mildew on wheat.
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Affiliation(s)
- Nathan M Kleczewski
- Department of Plant and Soil Science, University of Delaware, Newark, DE 19716
- Department of Crop Science, University of Illinois, Urbana, IL 61801
| | | | - Colin Scanlan
- Department of Plant and Soil Science, University of Delaware, Newark, DE 19716
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18
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Gao YY, Li XX, He LF, Li BX, Mu W, Liu F. Effect of Pyrisoxazole on Colletotrichum scovillei Infection and Anthracnose on Chili. PLANT DISEASE 2020; 104:551-559. [PMID: 31859594 DOI: 10.1094/pdis-06-19-1291-re] [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] [Indexed: 05/27/2023]
Abstract
Anthracnose caused by Colletotrichum scovillei is one of the most destructive diseases affecting chili production. Disease control mainly relies on conventional fungicides, and repeated exposure to single-site mode-of-action fungicides may pose a risk for the development of resistant isolates within the population. Our previous study suggested that pyrisoxazole has strong inhibitory activity against C. scovillei in vitro. However, the effects of pyrisoxazole on the C. scovillei infection process and the performance of pyrisoxazole in the field remain unclear. In this study, pyrisoxazole exhibited strong inhibitory activity against the mycelial growth, appressorium formation, and appressorium diameter of C. scovillei, with half maximal effective concentration values of 0.1986, 0.0147, and 0.0269 μg/ml, respectively, but had no effect on sporulation, even at the highest concentration of 1.6 μg/ml. The baseline sensitivity curves were unimodal with a long right-hand tail. The in vivo data showed that pyrisoxazole provided both preventive and curative activity against anthracnose on chili. Pyrisoxazole decreased the incidence of anthracnose and reduced disease progress. The results of electron microscopy showed that pyrisoxazole can affect the C. scovillei infection process by altering mycelial morphology, degrading conidia and germ tubes, suppressing conidial germination and appressorium formation, and enhancing conidiophore production. Pyrisoxazole can be used to effectively control anthracnose under field conditions and increase chili yield; moreover, no phytotoxicity symptoms were observed after treatment. These results provide new insight into the mechanisms by which pyrisoxazole controls disease and suggest that pyrisoxazole is a feasible alternative for the management of anthracnose in chili.
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Affiliation(s)
- Y Y Gao
- 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
| | - X X 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
| | - L F He
- 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
| | - B X 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
| | - W Mu
- 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
| | - F 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
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Habash SS, Brass HUC, Klein AS, Klebl DP, Weber TM, Classen T, Pietruszka J, Grundler FMW, Schleker ASS. Novel Prodiginine Derivatives Demonstrate Bioactivities on Plants, Nematodes, and Fungi. FRONTIERS IN PLANT SCIENCE 2020; 11:579807. [PMID: 33178246 PMCID: PMC7596250 DOI: 10.3389/fpls.2020.579807] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/18/2020] [Indexed: 05/06/2023]
Abstract
Bacterial metabolites represent an invaluable source of bioactive molecules which can be used as such or serve as chemical frameworks for developing new antimicrobial compounds for various applications including crop protection against pathogens. Prodiginines are tripyrrolic, red-colored compounds produced by many bacterial species. Recently, due to the use of chemical-, bio-, or mutasynthesis, a novel group of prodiginines was generated. In our study, we perform different assays to evaluate the effects of prodigiosin and five derivatives on nematodes and plant pathogenic fungi as well as on plant development. Our results showed that prodigiosin and the derivatives were active against the bacterial feeding nematode Caenorhabditis elegans in a concentration- and derivative-dependent manner while a direct effect on infective juveniles of the plant parasitic nematode Heterodera schachtii was observed for prodigiosin only. All compounds were found to be active against the plant pathogenic fungi Phoma lingam and Sclerotinia sclerotiorum. Efficacy varied depending on compound concentration and chemical structure. We observed that prodigiosin (1), the 12 ring- 9, and hexenol 10 derivatives are neutral or even positive for growth of Arabidopsis thaliana depending on the applied compound concentration, whereas other derivatives appear to be suppressive. Our infection assays revealed that the total number of developed H. schachtii individuals on A. thaliana was decreased to 50% in the presence of compounds 1 or 9. Furthermore, female nematodes and their associated syncytia were smaller in size. Prodiginines seem to indirectly inhibit H. schachtii parasitism of the plant. Further research is needed to elucidate their mode of action. Our results indicate that prodiginines are promising metabolites that have the potential to be developed into novel antinematodal and antifungal agents.
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Affiliation(s)
- Samer S. Habash
- INRES Molecular Phytomedicine, University of Bonn, Bonn, Germany
- *Correspondence: Samer S. Habash, ; orcid.org/0000-0002-4493-1451
| | - Hannah U. C. Brass
- Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich, Stetternicher Forst, Jülich, Germany
| | - Andreas S. Klein
- Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich, Stetternicher Forst, Jülich, Germany
| | - David P. Klebl
- Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich, Stetternicher Forst, Jülich, Germany
| | - Tim Moritz Weber
- Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich, Stetternicher Forst, Jülich, Germany
| | - Thomas Classen
- IBG-1: Bioorganic Chemistry, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Jörg Pietruszka
- Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich, Stetternicher Forst, Jülich, Germany
- IBG-1: Bioorganic Chemistry, Forschungszentrum Jülich GmbH, Jülich, Germany
| | | | - A. Sylvia S. Schleker
- INRES Molecular Phytomedicine, University of Bonn, Bonn, Germany
- A. Sylvia S. Schleker,
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20
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Kuzenkov AV, Zakharychev VV. Synthesis and Fungicidal Activity of Substituted N-(Alkoxy)-1-(3-pyridinyl)methanonimines. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219110045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Mandal R, Singh M, Krishnan AAV, Dahat YH, Bharitkar YP, Ravichandiran V, Hazra A. Semi-synthesis of a novel hybrid isoxazolidino withaferin via chemoselective and diastereoselective 1,3-dipolar nitrone cycloaddition reaction. Nat Prod Res 2019; 34:2208-2218. [PMID: 30938170 DOI: 10.1080/14786419.2019.1582045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A facile, atom-economic synthesis of isoxazilidino withaferin, a novel hybrid of withaferin A, has been accomplished via two-step reaction of nitrone synthesis followed by nitrone 1,3-dipolar cycloaddition. The reaction is highly chemoselective (preferential reaction only on one of the two double bonds present on withaferin A) and diastereoselective affording exclusively the cis-fused products. The structure was determined by detailed analysis of 1D, 2D NMR and mass spectral data.
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Affiliation(s)
- Ramkrishna Mandal
- National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, India
| | - Meenakshi Singh
- National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, India
| | - Amrutha A V Krishnan
- National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, India
| | - Yogita H Dahat
- National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, India
| | - Yogesh P Bharitkar
- National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, India
| | - V Ravichandiran
- National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, India
| | - Abhijit Hazra
- National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, India
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Duan Y, Li T, Xiao X, Wu J, Li S, Wang J, Zhou M. Pharmacological characteristics of the novel fungicide pyrisoxazole against Sclerotinia sclerotiorum. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 149:61-66. [PMID: 30033017 DOI: 10.1016/j.pestbp.2018.05.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 05/22/2018] [Accepted: 05/24/2018] [Indexed: 06/08/2023]
Abstract
Pyrisoxazole is a pyridine compound of demethylation inhibitor fungicides. In this study, baseline sensitivity of Sclerotinia sclerotiorum to pyrisoxazole was determined using 166 strains from the oilseed rape fields in 2014, 2015 and 2016. The EC50 values for mycelial growth inhibition ranged from 0.0214 to 0.5443 μg mL-1, with a mean EC50 value of 0.2329 ± 0.1048 μg mL-1 and were normally distributed. The EC50 values had no significant difference among three populations from 2014, 2015, and 2016. There was no correlation with sensitivity between pyrisoxazole and carbendazim or iprodione. After treated with pyrisoxazole, we observed increased cell membrane permeability, and decreased exopolysaccharide and oxalic acid production, which can contribute to reduced virulence of S. sclerotiorum and lead to failure of disease infection. Protective and curative activity tests showed that pyrisoxazole exhibited excellent protective and curative activity against S. sclerotiorum in oilseed rape, and protective activity was better than curative activity. Compared with the currently used fungicides, pyrisoxazole not only exhibited excellent control efficacy on Sclerotinia stem rot, but also dramatically reduced the doses of fungicides in the field trials. Overall, these data provide more references for revealing pharmacological effect of pyrisoxazole against S. sclerotiorum and managing Sclerotinia stem rot on oilseed rape caused by benzimidazole- and dicarboximide-resistant populations.
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Affiliation(s)
- Yabing Duan
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Tao Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Xuemei Xiao
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Shengkun Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Jianxin Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Mingguo Zhou
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
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Kuzenkov AV, Zakharychev VV, Volkova AN. Synthesis and Fungicidal Activity of Substituted 3-(1,2-Oxazolidin-3-yl)pyridines. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018050147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang Z, Ni X, Peng Q, Hou Y, Fang Y, Mu W, Liu C, Liu P, Liu X. The novel fungicide SYP-14288 acts as an uncoupler against Phytophthora capsici. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 147:83-89. [PMID: 29933997 DOI: 10.1016/j.pestbp.2018.01.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/25/2018] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
SYP-14288 is a novel fungicide developed by the Shenyang Research Institute of Chemical Industry in China. Although preliminary studies indicate that SYP-14288 is highly effective against 32 important plant pathogens belonging to a range of taxonomic groups, its mode of action remains unknown. In this study, we documented that SYP-14288 has excellent activity against all of the asexual life stages of the plant-pathogenic oomycete Phytophthora capsici, and is especially effective in blocking cyst germination and other life stages that require high energy consumption. In assays designed to determine the fungicide's mode of action, addition of ATP reduced SYP-14288 inhibition of P. capsici, which suggested that SYP-14288 inhibits ATP synthesis of the pathogen. This inference was confirmed in that treatment with SYP-14288 sharply reduced the ATP content in P. capsici. The respiration rate of P. capsici was positively correlated with the concentration of SYP-14288 or of the fungicide fluazinam (an uncoupler of oxidative phosphorylation), but increases in respiration were greater with SYP-14288 than with fluazinam. These results indicate that SYP-14288 is a promising fungicide that functions as an uncoupler of oxidative phosphorylation.
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Affiliation(s)
- Zhiwen Wang
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China
| | - Xiaoxia Ni
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China; Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, PR China
| | - Qin Peng
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China
| | - Yanhua Hou
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China
| | - Yuan Fang
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China
| | - Wenjun Mu
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China; Key Laboratory of Eco-environment and Leaf Tobacco Quality, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation, Zhengzhou 450001, PR China
| | - Changling Liu
- State Key Laboratory of Discovery and Development of Novel Pesticide, China Shenyang Research Institute of Chemical Industry, Shenyang 110021, PR China
| | - Pengfei Liu
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China.
| | - Xili Liu
- Department of Plant Pathology, China Agricultural University, Beijing 100193, PR China.
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Gao Y, He L, Li X, Lin J, Mu W, Liu F. Toxicity and biochemical action of the antibiotic fungicide tetramycin on Colletotrichum scovillei. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 147:51-58. [PMID: 29933993 DOI: 10.1016/j.pestbp.2018.02.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 02/03/2018] [Accepted: 02/24/2018] [Indexed: 06/08/2023]
Abstract
Tetramycin, a novel polyene macrolide antibiotic, has strong activity against a broad spectrum of fungi and may have potential uses in future agricultural applications. Thus, the antifungal activity and biochemical action of tetramycin on Colletotrichum scovillei were investigated in this study. The experimental results indicated that tetramycin had strong inhibitory activity against the mycelial growth, spore germination and germ tube elongation of C. scovillei. The baseline sensitivity curves were unimodal, with mean EC50 values of 1.98 ± 0.078 μg/mL and 0.003 ± 0.005 μg/mL for mycelial growth and spore germination inhibition, respectively. Tetramycin also inhibited the germination of spores and formation of appressoria. After tetramycin treatment, the edge of the mycelial diaphragm showed protuberances, with decreased offshoots at the top. Additionally, disruption of the membrane was detected through an increase in membrane permeability, leakage of sugars and a reduction in the ergosterol content. Tetramycin effectively controlled C. scovillei on detached pepper fruits. These results will contribute to our evaluation of the potential of tetramycin for successful management of pepper anthracnose and to our understanding of the possible biochemical action of tetramycin against C. scovillei.
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Affiliation(s)
- Yangyang Gao
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Lifei He
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Xiaoxu Li
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Jin Lin
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Wei Mu
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Feng Liu
- College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
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Yang X, Qi P, Wang X, Wang Z, Sun Y, Wang L, Xu X, Xu H, Wang Q, Wang X, Zhao C. Stereoselective Analysis and Degradation of Pyrisoxazole in Cabbage, Pakchoi, and Pepper by Liquid Chromatography Tandem Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:8295-8301. [PMID: 28863259 DOI: 10.1021/acs.jafc.7b02877] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Pyrisoxazole is a chiral fungicide with high sterilizing activity to the plant pathogenic bacteria and thus can be used for protecting the vegetables from gray mold, powdery mildew, and brown rot. The present work aimed to explore its stereoselective degradation in cabbage, pakchoi, and pepper samples. The enantioseparation and analysis on chiral column Lux Cellulose-3 based on liquid chromatography tandem mass spectrometry was developed coupled to the QuEChERS method. The recoveries of the stereoisomers in various vegetables ranged from 72.6 to 124% with RSD lower than 5.0%. Enantioselective dissipation of pyrisoxazole in vegetables displayed that (-)-A-pyrisoxazole was preferentially degraded versus (+)-A-pyrisoxazole in all the vegetables. (+)-B-pyrisoxazole was preferentially degraded in cabbage, while there was no obvious enantioselectivity in pakchoi and pepper. Meanwhile, stereoselectivity analysis demonstrated that (±)-A-pyrisoxazole was degraded faster than (±)-B-pyrisoxazole in pakchoi and pepper, while there was no stereoselective degradation in cabbages.
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Affiliation(s)
- Xuewei Yang
- Northeast Agricultural University , Harbin 150030, P. R. China
| | - Peipei Qi
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection , Hangzhou 310021, P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang , Hangzhou 310021, P. R. China
| | - Xiangyun Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection , Hangzhou 310021, P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang , Hangzhou 310021, P. R. China
| | - Zhiwei Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection , Hangzhou 310021, P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang , Hangzhou 310021, P. R. China
| | - Yuhan Sun
- Northeast Agricultural University , Harbin 150030, P. R. China
| | - Lidong Wang
- Northeast Agricultural University , Harbin 150030, P. R. China
| | - Xiahong Xu
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection , Hangzhou 310021, P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang , Hangzhou 310021, P. R. China
| | - Hao Xu
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection , Hangzhou 310021, P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang , Hangzhou 310021, P. R. China
| | - Qiang Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection , Hangzhou 310021, P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang , Hangzhou 310021, P. R. China
| | - Xinquan Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, P. R. China
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection , Hangzhou 310021, P. R. China
- Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang , Hangzhou 310021, P. R. China
| | - Changshan Zhao
- Northeast Agricultural University , Harbin 150030, P. R. China
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Song PP, Zhao J, Liu ZL, Duan YB, Hou YP, Zhao CQ, Wu M, Wei M, Wang NH, Lv Y, Han ZJ. Evaluation of antifungal activities and structure-activity relationships of coumarin derivatives. PEST MANAGEMENT SCIENCE 2017; 73:94-101. [PMID: 27570117 DOI: 10.1002/ps.4422] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 08/16/2016] [Accepted: 08/24/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Osthol is a natural coumarin and lead compound that has been developed into commercial fungicides in China. Natural coumarins comprise five major subtypes: simple coumarins, linear furanocoumarins, angular furanocoumarins, linear pyranocoumarins and angular pyranocoumarins. Studies pertaining to the antifungal activities of linear pyranocoumarins are few, and no reports exist for the antifungal activities of angular pyranocoumarins. In order to discover more antifungal natural coumarins, we synthesised a series of simple natural coumarins and isolated several plant-based furanocoumarins and pyranocoumarins using previously described methods. The compounds were biologically evaluated against some plant fungal pathogens. RESULTS Several of the 35 coumarins evaluated here exhibited strong activities against specific fungal species, including compound 25 (Pd-D-V, a linear pyranocoumarin), compound 26 (libanorin, an angular furanocoumarin) and compound 34 (disenecioyl khellactone, an angular pyranocoumarin). Compound 25 exhibited a high activity against Sclerotinia sclerotiorum (EC50 = 13.2 µg mL-1 ); compound 34 displayed a strong antifungal activity against Botrytis cinerea (EC50 = 11.0 µg mL-1 ). CONCLUSION This study demonstrates that several natural coumarins (one linear pyranocoumarin and one angular pyranocoumarin in particular) exhibit strong antifungal activities. These results call for further studies, where these coumarins can be examined as potential lead compounds for developing novel antifungal agents. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Ping-Ping Song
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, College of Plant Protection, Nanjing Agricultural University, Ministry of Agriculture, Nanjing, Jiangsu Province, China
- Jiangsu Centre for Research and Development of Medicinal Plants, Institute of Botany, Jiangsu Province and the Chinese Academy of Sciences, Nanjing, Jiangsu Province, China
| | - Jun Zhao
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, College of Plant Protection, Nanjing Agricultural University, Ministry of Agriculture, Nanjing, Jiangsu Province, China
| | - Zong-Liang Liu
- Key Laboratory of Molecular Pharmacology and Drug Evaluation, School of Pharmacy, Collaborative Innovation Centre of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Ministry of Education, Yantai, Shandong Province, China
| | - Ya-Bing Duan
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, College of Plant Protection, Nanjing Agricultural University, Ministry of Agriculture, Nanjing, Jiangsu Province, China
| | - Yi-Ping Hou
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, College of Plant Protection, Nanjing Agricultural University, Ministry of Agriculture, Nanjing, Jiangsu Province, China
| | - Chun-Qing Zhao
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, College of Plant Protection, Nanjing Agricultural University, Ministry of Agriculture, Nanjing, Jiangsu Province, China
| | - Min Wu
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, College of Plant Protection, Nanjing Agricultural University, Ministry of Agriculture, Nanjing, Jiangsu Province, China
| | - Min Wei
- Jiangsu Centre for Research and Development of Medicinal Plants, Institute of Botany, Jiangsu Province and the Chinese Academy of Sciences, Nanjing, Jiangsu Province, China
| | - Nian-He Wang
- Jiangsu Centre for Research and Development of Medicinal Plants, Institute of Botany, Jiangsu Province and the Chinese Academy of Sciences, Nanjing, Jiangsu Province, China
| | - Ye Lv
- Jiangsu Centre for Research and Development of Medicinal Plants, Institute of Botany, Jiangsu Province and the Chinese Academy of Sciences, Nanjing, Jiangsu Province, China
| | - Zhao-Jun Han
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, College of Plant Protection, Nanjing Agricultural University, Ministry of Agriculture, Nanjing, Jiangsu Province, China
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Berthet M, Cheviet T, Dujardin G, Parrot I, Martinez J. Isoxazolidine: A Privileged Scaffold for Organic and Medicinal Chemistry. Chem Rev 2016; 116:15235-15283. [PMID: 27981833 DOI: 10.1021/acs.chemrev.6b00543] [Citation(s) in RCA: 188] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The isoxazolidine ring represents one of the privileged structures in medicinal chemistry, and there have been an increasing number of studies on isoxazolidine and isoxazolidine-containing compounds. Optimization of the 1,3-dipolar cycloaddition (1,3-DC), original methods including electrophilic or palladium-mediated cyclization of unsaturated hydroxylamine, has been developed to obtain isoxazolidines. Novel reactions involving the isoxazolidine ring have been highlighted to accomplish total synthesis or to obtain bioactive compounds, one of the most significant examples being probably the thermic ring contraction applied to the total synthesis of (±)-Gelsemoxonine. The unique isoxazolidine scaffold also exhibits an impressive potential as a mimic of nucleosides, carbohydrates, PNA, amino acids, and steroid analogs. This review aims to be a comprehensive and general summary of the different isoxazolidine syntheses, their use as starting building blocks for the preparation of natural compounds, and their main biological activities.
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Affiliation(s)
- Mathéo Berthet
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Thomas Cheviet
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans , IMMM UMR 6283 CNRS, Université du Maine, UFR Sciences et Techniques, Avenue Olivier Messiaen, 72085 Le Mans, France
| | - Isabelle Parrot
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron , IBMM UMR-5247 CNRS, Université de Montpellier, ENSCM, CC17-03, Pl. E. Bataillon, 34095 Montpellier Cedex 5, France
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Miao J, Dong X, Lin D, Wang Q, Liu P, Chen F, Du Y, Liu X. Activity of the novel fungicide oxathiapiprolin against plant-pathogenic oomycetes. PEST MANAGEMENT SCIENCE 2016; 72:1572-7. [PMID: 26577849 DOI: 10.1002/ps.4189] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 11/15/2015] [Accepted: 11/16/2015] [Indexed: 05/14/2023]
Abstract
BACKGROUND Oxathiapiprolin was the first of the piperidinyl thiazole isoxazoline class of fungicides to be discovered and developed by DuPont in 2007. Although oxathiapiprolin has been reported to have high activity against plant-pathogenic oomycetes, such as Peronospora belbahrii, Phytophthora nicotianae and Ph. capsici, little is known about its effectiveness against other plant-pathogenic oomycetes and its protective and curative properties. RESULTS Oxathiapiprolin exhibited substantial inhibitory activity against all of the plant-pathogenic oomycetes tested, with EC90 values ranging from 0.14 to 3.36 × 10(-3) µg mL(-1) , except the Pythium species Py. aphanidermatum and Py. deliense. Furthermore, doses as low as 10 µg mL(-1) were found to inhibit zoospore release and motility in Ph. capsici, while the mycelial development and sporangial production of Pseudoperonospora cubensis were restrained by an EC50 of 3.10 × 10(-4) and 5.17 × 10(-4) µg mL(-1) respectively. It was also found that oxathiapiprolin exhibited both protective and curative activity against the development of Ph. capsici infection in pepper plants under greenhouse conditions and in field tests. CONCLUSION The present study demonstrated that the novel fungicide oxathiapiprolin exhibits strong inhibitory activity against a range of agriculturally important plant-pathogenic oomycetes, including Phytophthora spp., Peronophythora litchii, Plasmopara viticola, Pe. parasitica, Ps. cubensis and Py. ultimum. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Jianqiang Miao
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Xue Dong
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Dong Lin
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Qiushi Wang
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Pengfei Liu
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Furu Chen
- Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fujian, China
| | - Yixin Du
- Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fujian, China
| | - Xili Liu
- Department of Plant Pathology, China Agricultural University, Beijing, China
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Pan X, Dong F, Xu J, Liu X, Chen Z, Zheng Y. Stereoselective analysis of novel chiral fungicide pyrisoxazole in cucumber, tomato and soil under different application methods with supercritical fluid chromatography/tandem mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2016; 311:115-124. [PMID: 26970041 DOI: 10.1016/j.jhazmat.2016.03.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 02/02/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
Various new chiral pesticides have been registered and used in crop yields. However, few studies have focused on the environmental behavior of such new registered chiral compounds on the stereoisomer level. In this study, an effective and sensitive chiral analytical method was first developed to detect pyrisoxazole stereoisomers and then further applied to investigate the stereoselective dissipation in vegetables and soil using supercritical fluid chromatography/tandem triple quadrupole mass spectrometry. Optimal separation condition was achieved with IA column using CO2/MeOH (75:25) as mobile phase at 2.0 mL/min in 5 min, 35 °C and 2400 psi. The average recoveries in all of the matrices at four spiking levels ranged from 84.0% to 105.6%. Significant stereoselective dissipation was observed in cucumber and tomato under both application modes. (-) Pyrisoxazole A and (-) pyrisoxazole B were preferentially degraded in cucumber under foliar spraying mode. In contrast, (+) pyrisoxazole A and (-) pyrisoxazole B were preferentially degraded in cucumber under soil irrigation mode. (-) Pyrisoxazole A and (-) pyrisoxazole B were degraded faster than their antipodes in tomato under both application modes. However, no significant stereoselectivity was observed in soil. The results of this study could help facilitate more accurate risk assessments of pyrisoxazole.
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Affiliation(s)
- Xinglu Pan
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Zenglong Chen
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China.
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Ngo HX, Garneau-Tsodikova S, Green KD. A complex game of hide and seek: the search for new antifungals. MEDCHEMCOMM 2016; 7:1285-1306. [PMID: 27766140 PMCID: PMC5067021 DOI: 10.1039/c6md00222f] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Fungal infections directly affect millions of people each year. In addition to the invasive fungal infections of humans, the plants and animals that comprise our primary food source are also susceptible to diseases caused by these eukaryotic microbes. The need for antifungals, not only for our medical needs, but also for use in agriculture and livestock causes a high demand for novel antimycotics. Herein, we provide an overview of the most commonly used antifungals in medicine and agriculture. We also present a summary of the recent progress (from 2010-2016) in the discovery/development of new agents against fungal strains of medical/agricultural relevance, as well as information related to their biological activity, their mode(s) of action, and their mechanism(s) of resistance.
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Affiliation(s)
- Huy X. Ngo
- University of Kentucky, Department of Pharmaceutical Sciences, 789 South Limestone Street, Lexington, KY, USA. Fax: 859-257-7585; Tel: 859-218-1686
| | - Sylvie Garneau-Tsodikova
- University of Kentucky, Department of Pharmaceutical Sciences, 789 South Limestone Street, Lexington, KY, USA. Fax: 859-257-7585; Tel: 859-218-1686
| | - Keith D. Green
- University of Kentucky, Department of Pharmaceutical Sciences, 789 South Limestone Street, Lexington, KY, USA. Fax: 859-257-7585; Tel: 859-218-1686
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Chen F, Lin D, Wang J, Li B, Duan H, Liu J, Liu X. Heterologous expression of the Monilinia fructicola CYP51 (MfCYP51) gene in Pichia pastoris confirms the mode of action of the novel fungicide, SYP-Z048. Front Microbiol 2015; 6:457. [PMID: 26042103 PMCID: PMC4437033 DOI: 10.3389/fmicb.2015.00457] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 04/27/2015] [Indexed: 11/23/2022] Open
Abstract
The novel agricultural fungicide 3-[5-(4-chlorophenyl)-2,3-dimethyl-3-isoxazolidinyl] pyridine (SYP-Z048) developed by China Shenyang Research Institute of Chemical Industry has been confirmed to be an ergosterol biosynthesis inhibitor (EBI). Previous studies have shown that EBIs target the proteins from a range of genes, including CYP51, ERG2 and/or ERG24, and ERG27, which are involved in the ergosterol biosynthesis pathway. In the current study the ERG2, ERG24, and ERG27 genes were cloned from wild type and resistant mutants of Monilinia fructicola in an attempt to clarify the target site of SYP-Z048. Comparative analysis of the deduced aa sequence of these genes, as well as CYP51, revealed several point mutations that resulted in amino acid variation among the sensitive and resistant isolates. However, sensitivity assays indicated that only one, the substitution of phenylalanine (F) for the tyrosine (Y) at 136 in CYP51, was correlated with reduced sensitivity to SYP-Z048. Heterologous expression of MfCYP51-136Y (MfCYP136Y) and MfCYP51-136F (MfCYP136F) in Pichia pastoris revealed that MfCYP136F significantly reduced sensitivity to SYP-Z048, increasing the average EC50 of the transformants 11-fold relative to those carrying MfCYP136Y. However, neither the additional copy of MfCYP136Y nor multiple copies of MfCYP136F were found to reduce sensitivity relative to the empty vector control or single copy transformants, respectively. Molecular docking experiments using SYP-Z048 with HsCYP145Y and the mutated version HsCYP145F as substitutes for MfCYP136Y and MfCYP136F, respectively, indicated that the reduced affinity of HsCYP145F for SYP-Z048 resulted from the loss of a hydrogen bond between the fungicide and the active site. Taken together these results indicate that MfCYP51 is the major target site of SYP-Z048 in M. fructicola, which has important implications for the resistance management of this fungicide in the field.
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Affiliation(s)
- Fengping Chen
- Key Laboratory of Plant Virology of Fujian Province, Institute of Plant Virology, Fujian Agriculture and Forestry UniversityFuzhou, China
- Department of Plant Pathology, China Agricultural UniversityBeijing, China
| | - Dong Lin
- Department of Plant Pathology, China Agricultural UniversityBeijing, China
| | - Jingyuan Wang
- Department of Plant Pathology, China Agricultural UniversityBeijing, China
| | - Botao Li
- Department of Plant Pathology, China Agricultural UniversityBeijing, China
- Taizhou Entry-Exit Inspection and Quarantine BureauZhejiang, China
| | - Hongxia Duan
- Department of Chemistry, College of Science, China Agricultural UniversityBeijing, China
| | - Junli Liu
- State Key Laboratory of the Discovery and Development of Novel Pesticide, China Shenyang Research Institute of Chemical IndustryShenyang, China
| | - Xili Liu
- Department of Plant Pathology, China Agricultural UniversityBeijing, China
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