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Yang L, Chen H, Du P, Miao X, Huang S, Cheng D, Xu H, Zhang Z. Inhibition mechanism of Rhizoctonia solani by pectin-coated iron metal-organic framework nanoparticles and evidence of an induced defense response in rice. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134807. [PMID: 38850939 DOI: 10.1016/j.jhazmat.2024.134807] [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: 12/28/2023] [Revised: 06/01/2024] [Accepted: 06/02/2024] [Indexed: 06/10/2024]
Abstract
Nanocrop protectants have attracted much attention as sustainable platforms for controlling pests and diseases and improving crop nutrition. Here, we reported the fungicidal activity and disease inhibition potential of pectin-coated metal-iron organic framework nanoparticles (Fe-MOF-PT NPs) against rice stripe blight (RSB). An in vitro bacterial inhibition assay showed that Fe-MOF-PT NPs (80 mg/L) significantly inhibited mycelial growth and nucleus formation. The Fe-MOF-PT NPs adsorbed to the surface of mycelia and induced toxicity by disrupting cell membranes, mitochondria, and DNA. The results of a nontargeted metabolomics analysis showed that the metabolites of amino acids and their metabolites, heterocyclic compounds, fatty acids, and nucleotides and their metabolites were significantly downregulated after treatment with 80 mg/L NPs. The difference in metabolite abundance between the CK and Fe-MOF-PT NPs (80 mg/L) treatment groups was mainly related to nucleotide metabolism, pyrimidine metabolism, purine metabolism, fatty acid metabolism, and amino acid metabolism. The results of the greenhouse experiment showed that Fe-MOF-PT NPs improved rice resistance to R. solani by inhibiting mycelial invasion, enhancing antioxidant enzyme activities, activating the jasmonic acid signaling pathway, and enhancing photosynthesis. These findings indicate the great potential of Fe-MOF-PT NPs as a new RSB disease management strategy and provide new insights into plant fungal disease management.
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Affiliation(s)
- Liupeng Yang
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Huiya Chen
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Pengrui Du
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Xiaoran Miao
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Suqing Huang
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Dongmei Cheng
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Hanhong Xu
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
| | - Zhixiang Zhang
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou 510642, China; Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
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Huang X, Xing Y, Jiang H, Pu Y, Yang S, Kang Z, Cai L. Nonphytotoxic and pH-responsive ZnO-ZIF‑8 loaded with honokiol as a "nanoweapon" effectively controls the soil-borne bacterial pathogen Ralstonia solanacearum. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134502. [PMID: 38743980 DOI: 10.1016/j.jhazmat.2024.134502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 04/15/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024]
Abstract
The development of intelligently released and environmentally safe nanocarriers not only aligns with the sustainable agricultural strategy but also offers a potential solution for controlling severe soil-borne bacterial diseases. Herein, the core-shell structured nanocarrier loaded with honokiol bactericide (honokiol@ZnO-ZIF-8) was synthesized via a one-pot method for the targeted control of Ralstonia solanacearum, the causative agent of tobacco bacterial wilt disease. Results indicated that honokiol@ZnO-ZIF-8 nanoparticles induced bacterial cell membrane and DNA damage through the production of excessive reactive oxygen species (ROS), thereby reducing bacterial cell viability and ultimately leading to bacterial death. Additionally, the dissociation mechanism of the nanocarriers was elucidated for the first time through thermodynamic computational simulation. The nanocarriers dissociate primarily due to H+ attacking the N atom on imidazole, causing the rupture of the Zn-N bond under acidic conditions and at room temperature. Furthermore, honokiol@ZnO-ZIF-8 exhibited potent inhibitory effects against other prominent Solanaceae pathogenic bacteria (Pseudomonas syringae pv. tabaci), demonstrating its broad-spectrum antibacterial activity. Biosafety assessment results indicated that honokiol@ZnO-ZIF-8 exhibited non-phytotoxicity towards tobacco and tomato plants, with its predominant accumulation in the roots and no translocation to aboveground tissues within a short period. This study provides potential application value for the intelligent release of green pesticides. ENVIRONMENT IMPLICATION: The indiscriminate use of agrochemicals poses a significant threat to environmental, ecological security, and sustainable development. Slow-release pesticides offer a green and durable strategy for crop disease control. In this study, we developed a non-phytotoxic and pH-responsive honokiol@ZnO-ZIF-8 nano-bactericide based on the pathogenesis of Ralstonia solanacearum. Thermodynamic simulation revealed the dissociation mechanism of ZIF-8, with different acidity controlling the dissociation rate. This provides a theoretical basis for on-demand pesticide release while reducing residue in the. Our findings provide strong evidence for effective soil-borne bacterial disease control and on-demand pesticide release.
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Affiliation(s)
- Xunliang Huang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China; College of Tobacco Science of Guizhou University, Guizhou Key Laboratory for Tobacco Quality, Guiyang 550025, China
| | - Yue Xing
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Hao Jiang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Ya Pu
- College of Tobacco Science of Guizhou University, Guizhou Key Laboratory for Tobacco Quality, Guiyang 550025, China
| | - Song Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling 712100, China.
| | - Lin Cai
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China; College of Tobacco Science of Guizhou University, Guizhou Key Laboratory for Tobacco Quality, Guiyang 550025, China; State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling 712100, China.
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Chen G, Bai J, Wu X, Huo X, Li Y, Lei P, Ma Z. Amphiphilic amidines as potential plasmic membrane-targeting antifungal agents: synthesis, bio-activities and QSAR. PEST MANAGEMENT SCIENCE 2024. [PMID: 38877543 DOI: 10.1002/ps.8253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/17/2024] [Accepted: 06/04/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND Cationic antimicrobial peptides (AMPs) possess broad-spectrum biological activities with less inclination to inducing antibiotic resistance. Herein a battery of amphiphilic amidines were designed by mimicking the characteristics of AMPs. The antifungal activities and the effects to the hyphal morphology and membrane permeability were investigated. RESULTS The results indicated the inhibitory rates of ten compounds were over 80% to Botrytis cinerea and ten compounds over 90% to Valsa mali Miyabe et Yamada at 50 mg L-1. The half maximal effective concentration (EC50) values of compound 5g and 6g to V. mali were 1.21 and 1.90 mg L-1 respectively. The protective rate against apple canker of compound 5g reached 93.4% at 100 mg L-1 on twigs, superior to carbendazim (53.3%). When treated with 5g, the cell membrane permeability and leakage of content of V. mali increased, accompanied with the decrease of superoxide dismutase (SOD) and catalase (CAT) level. Concurrently, the mycelial hyphae contracted, wrinkled, and collapsed, providing evidence of membrane perturbation. A three-dimensional quantitative structure-activity relationship (3D-QSAR) between the topic compounds and the EC50 to V. mali was established showing good predictability (r2 = 0.971). CONCLUSION Amphiphilic amidines can acquire antifungal activities by acting on the plasmic membrane. Compound 5g could be a promising lead in discovering novel fungicidal candidates. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Guangyou Chen
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, China
| | - Jing Bai
- College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xinyan Wu
- College of Plant Protection, Northwest A&F University, Yangling, China
| | - Xinyi Huo
- College of Plant Protection, Northwest A&F University, Yangling, China
| | - Yongqiang Li
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Peng Lei
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, China
| | - Zhiqing Ma
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, China
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Zhang L, Huang Y, Duan X, Si H, Luo H, Chen S, Liu L, He H, Wang Z, Liao S. Antifungal Activity and Mechanism of Camphor Derivatives against Rhizoctonia solani: A Promising Alternative Antifungal Agent for Rice Sheath Blight. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11415-11428. [PMID: 38727515 DOI: 10.1021/acs.jafc.4c02865] [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: 05/23/2024]
Abstract
Rice sheath blight, caused by the fungus Rhizoctonia solani, poses a significant threat to rice cultivation globally. This study aimed to investigate the potential mechanisms of action of camphor derivatives against R. solani. Compound 4o exhibited superior fungicidal activities in vitro (EC50 = 6.16 mg/L), and in vivo curative effects (77.5%) at 500 mg/L were significantly (P < 0.01) higher than the positive control validamycin·bacillus (66.1%). Additionally, compound 4o exhibited low cytotoxicity and acute oral toxicity for adult worker honeybees of Apis mellifera L. Mechanistically, compound 4o disrupted mycelial morphology and microstructure, increased cell membrane permeability, and inhibited both PDH and SDH enzyme activities. Molecular docking and molecular dynamics analyses indicated a tight interaction of compound 4o with PDH and SDH active sites. In summary, compound 4o exhibited substantial antifungal efficacy against R. solani, serving as a promising lead compound for further optimization of antifungal agents.
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Affiliation(s)
- Li Zhang
- College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species, Jiangxi Agricultural University, Nanchang 330045, China
- College of Agronomy, Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Jiangxi Super Rice Engineering Technology Research Center, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yizhong Huang
- College of Life Sciences, Nanchang Normal University, Nanchang 330032, China
| | | | - Hongyan Si
- College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species, Jiangxi Agricultural University, Nanchang 330045, China
| | - Hai Luo
- College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species, Jiangxi Agricultural University, Nanchang 330045, China
| | - Shangxing Chen
- College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species, Jiangxi Agricultural University, Nanchang 330045, China
| | | | - Haohua He
- College of Agronomy, Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Jiangxi Super Rice Engineering Technology Research Center, Jiangxi Agricultural University, Nanchang 330045, China
| | - Zongde Wang
- College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species, Jiangxi Agricultural University, Nanchang 330045, China
| | - Shengliang Liao
- College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species, Jiangxi Agricultural University, Nanchang 330045, China
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An JX, Zhang BQ, Liang HJ, Zhang ZJ, Liu YQ, Zhang SY. Antifungal Activity and Putative Mechanism of HWY-289, a Semisynthetic Protoberberine Derivative, against Botrytis cinerea. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7716-7726. [PMID: 38536397 DOI: 10.1021/acs.jafc.3c08858] [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: 04/11/2024]
Abstract
The emergence of resistant pathogens has increased the demand for alternative fungicides. The use of natural products as chemical scaffolds is a potential method for developing fungicides. HWY-289, a semisynthetic protoberberine derivative, demonstrated broad-spectrum and potent activities against phytopathogenic fungi, particularly Botrytis cinerea (with EC50 values of 1.34 μg/mL). SEM and TEM imaging indicated that HWY-289 altered the morphology of the mycelium and the internal structure of cells. Transcriptomics revealed that it could break down cellular walls through amino acid sugar and nucleotide sugar metabolism. In addition, it substantially decreased chitinase activity and chitin synthase gene (BcCHSV) expression by 53.03 and 82.18% at 1.5 μg/mL, respectively. Moreover, this impacted the permeability and integrity of cell membranes. Finally, HWY-289 also hindered energy metabolism, resulting in a significant reduction of ATP content, ATPase activities, and key enzyme activities in the TCA cycle. Therefore, HWY-289 may be a potential candidate for the development of plant fungicides.
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Affiliation(s)
- Jun-Xia An
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Bao-Qi Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hong-Jie Liang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
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Zhang Z, Chen T, Yin X, Wang W, Li W, Chen X, Ma J, Long Y. Honokiol inhibits Botryosphaeria dothidea, the causal pathogen of kiwifruit soft rot, by targeting membrane lipid biosynthesis. PEST MANAGEMENT SCIENCE 2024; 80:1779-1794. [PMID: 38031205 DOI: 10.1002/ps.7910] [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: 06/28/2023] [Revised: 10/23/2023] [Accepted: 11/30/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Kiwifruit soft rot is mainly caused by Botryosphaeria dothidea, representing a considerable threat to kiwifruit industry. This investigation assessed the inhibitory consequences and mechanisms of honokiol against B. dothidea, evaluating the inhibitory effects and underlying mechanism. RESULTS A strain of B.dothidea (XFCT-2) was isolated from infected soft rot kiwifruit. The findings indicate that honokiol hindered the mycelial growth, conidial germination, and pathogenicity of B. dothidea in a dose-dependent manner, both in vitro and in vivo. Furthermore, ultrastructural examinations showed that honokiol impaired the integrity of B. dothidea, leading to an elevation in cell membrane permeability, engendering a multitude of intracellular substance extravasations and hampering energy metabolism. Transcriptome analysis exhibited that honokiol-regulated genes were related to membrane lipid biosynthesis, comprising ACC1, FAS2, Arp2, gk, Cesle, and Etnk1. These findings indicate that honokiol impedes B. dothidea by obstructing lipid biosynthesis within the cell membrane and compromising its integrity, halting the growth of the mycelia, which could potentially cause cellular demise. CONCLUSION This investigation illustrates how honokiol functions as an eco-friendly approach to prevent the occurrence of soft rot in kiwifruits. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Zhuzhu Zhang
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
- Teaching Experiment Farm, Guizhou University, Guiyang, China
| | - Tingting Chen
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
- Teaching Experiment Farm, Guizhou University, Guiyang, China
| | - Xianhui Yin
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
| | - Weizhen Wang
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
| | - Wenzhi Li
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
| | - Xuetang Chen
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
| | - Jiling Ma
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
| | - Youhua Long
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
- Teaching Experiment Farm, Guizhou University, Guiyang, China
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Vishwakarma M, Haider T, Soni V. Update on fungal lipid biosynthesis inhibitors as antifungal agents. Microbiol Res 2024; 278:127517. [PMID: 37863019 DOI: 10.1016/j.micres.2023.127517] [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: 05/25/2023] [Revised: 10/10/2023] [Accepted: 10/10/2023] [Indexed: 10/22/2023]
Abstract
Fungal diseases today represent a world-wide problem. Poor hygiene and decreased immunity are the main reasons behind the manifestation of this disease. After COVID-19, an increase in the rate of fungal infection has been observed in different countries. Different classes of antifungal agents, such as polyenes, azoles, echinocandins, and anti-metabolites, as well as their combinations, are currently employed to treat fungal diseases; these drugs are effective but can cause some side effects and toxicities. Therefore, the identification and development of newer antifungal agents is a current need. The fungal cell comprises many lipids, such as ergosterol, phospholipids, and sphingolipids. Ergosterol is a sterol lipid that is only found in fungal cells. Various pathways synthesize all these lipids, and the activities of multiple enzymes govern these pathways. Inhibiting these enzymes will ultimately impede the lipid synthesis pathway, and this phenomenon could be a potential antifungal therapy. This review will discuss various lipid synthesis pathways and multiple antifungal agents identified as having fungal lipid synthesis inhibition activity. This review will identify novel compounds that can inhibit fungal lipid synthesis, permitting researchers to direct further deep pharmacological investigation and help develop drug delivery systems for such compounds.
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Affiliation(s)
- Monika Vishwakarma
- Department of Pharmaceutical Sciences, Dr. Harisingh Gour Vishwavidyalaya, Sagar, M.P., India
| | - Tanweer Haider
- Department of Pharmaceutical Sciences, Dr. Harisingh Gour Vishwavidyalaya, Sagar, M.P., India; Amity Institute of Pharmacy, Amity University, Gwalior, M.P., India
| | - Vandana Soni
- Department of Pharmaceutical Sciences, Dr. Harisingh Gour Vishwavidyalaya, Sagar, M.P., India.
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Gao L, Liang Y, Xiong Q, Huang M, Jiang Y, Zhang J. Control of citrus blue and green molds by Actinomycin X 2 and its possible antifungal mechanism. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 198:105718. [PMID: 38225074 DOI: 10.1016/j.pestbp.2023.105718] [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: 11/01/2023] [Revised: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 01/17/2024]
Abstract
Citrus blue and green molds caused by Penicillium digitatum, P. italicum, and P. polonicum, are the major postharvest diseases of citrus fruit. In the present study, Actinomycin X2 (Act-X2), a naturally occurring antibiotic produced by Streptomyces species, was found to show excellent antifungal effect against these three pathogens with a minimum inhibitory concentration (MIC) value of 62.5 μg/mL for them all, which was better than the positive control thiophanate-methyl. Act-X2 significantly reduced the percentage of spore germination, and highly inhibited the mycelial growth of P. italicum, P. digitatum, and P. polonicum with EC50 values being 34.34, 13.76, and 37.48 μg/mL, respectively. In addition, Act-X2 greatly decreased the intracellular protein content while increasing the reactive oxygen species (ROS) level and superoxide anion (O2-) content in the mycelia of pathogens. In vivo test indicated that Act-X2 strongly inhibited the infection of navel oranges by these three Penicillium species, with an inhibition percentage of >50% for them all at the concentration of 10 MIC. Transcriptome analysis suggested that Act-X2 might highly influence the ribosomal functions of P. polonicum, which was supported as well by the molecular docking analysis of Act-X2 with some key functional proteins and RNAs of the ribosome. Furthermore, Act-X2 significantly reduced the decay percentage and improved the firmness, color, and sugar-acid ratio of navel oranges spray-inoculated with P. polonicum during the postharvest storage at 4 °C for 60 d.
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Affiliation(s)
- Liangliang Gao
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Yan Liang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Qin Xiong
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Meiling Huang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Yueming Jiang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China; South China Botanical Garden, Chinese Academy of Science, Guangzhou 510650, China
| | - Jun Zhang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China.
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Pu MX, Guo HY, Quan ZS, Li X, Shen QK. Application of the Mannich reaction in the structural modification of natural products. J Enzyme Inhib Med Chem 2023; 38:2235095. [PMID: 37449337 DOI: 10.1080/14756366.2023.2235095] [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: 05/15/2023] [Revised: 06/23/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023] Open
Abstract
The Mannich reaction is commonly used to introduce N atoms into compound molecules and is thus widely applied in drug synthesis. The Mannich reaction accounts for a certain proportion of structural modifications of natural products. The introduction of Mannich bases can significantly improve the activity, hydrophilicity, and medicinal properties of compounds; therefore, the Mannich reaction is widely used for the structural modification of natural products. In this paper, the application of the Mannich reaction to the structural modification of natural products is reviewed, providing a method for the structural modification of natural products.
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Affiliation(s)
- Miao-Xia Pu
- Interdisciplinary Program of Biological Functional Molecules, College of Integration Science, Yanbian University, Yanji, China
| | - Hong-Yan Guo
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, China
| | - Zhe-Shan Quan
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, China
| | - Xiaoting Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, China
| | - Qing-Kun Shen
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, China
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Hu YM, Wang YR, Zhao WB, Ding YY, Wu ZR, Wang GH, Deng P, Zhang SY, An JX, Zhang ZJ, Luo XF, Liu YQ. Efficacy of pterostilbene suppression on Aspergillus flavus growth, aflatoxin B 1 biosynthesis and potential mechanisms. Int J Food Microbiol 2023; 404:110318. [PMID: 37454507 DOI: 10.1016/j.ijfoodmicro.2023.110318] [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: 01/16/2023] [Revised: 05/15/2023] [Accepted: 07/09/2023] [Indexed: 07/18/2023]
Abstract
Aspergillus flavus, a widespread saprotrophic filamentous fungus, could colonize agricultural crops with aflatoxin contamination, which endangers food security and the agricultural economy. A safe, effective and environmentally friendly fungicide is urgently needed. Pterostilbene, a natural phytoalexin originated from Pterocarpus indicus Willd., Vaccinium spp. and Vitis vinifera L., has been reported to possess excellent antimicrobial activity. More importantly, it is quite safe and healthy. In our screening tests of plant polyphenols for the inhibition of A. flavus, we found that pterostilbene evidently inhibited mycelial growth of Aspergillus flavus (EC50 = 15.94 μg/mL) and the inhibitory effect was better than that of natamycin (EC50 = 22.01 μg/mL), which is a natural product widely used in food preservation. Therefore, we provided insights into the efficacy of pterostilbene suppression on A. flavus growth, aflatoxin B1 biosynthesis and its potential mechanisms against A. flavus in the present study. Here, pterostilbene at concentrations of 250 and 500 μg/mL could effectively inhibit the infection of A. flavus on peanuts. And the biosynthesis of the secondary metabolite aflatoxin B1 was also inhibited. The antifungal effects of pterostilbene are exerted by inducing a large amount of intracellular reactive oxygen species production to bring the cells into a state of oxidative stress, damaging cellular biomolecules such as DNA, proteins and lipids and destroying the integrity of the cell membrane. Taken together, our study strongly supported the fact that pterostilbene could be considered a safe and effective antifungal agent against A. flavus infection.
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Affiliation(s)
- Yong-Mei Hu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China.
| | - Yi-Rong Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Wen-Bin Zhao
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Yan Yan Ding
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Zheng-Rong Wu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Guang-Han Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Peng Deng
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
| | - Jun-Xia An
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Xiong-Fei Luo
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China; State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730000, China.
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11
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Xun W, Gong B, Liu X, Yang X, Zhou X, Jin L. Antifungal Mechanism of Phenazine-1-Carboxylic Acid against Pestalotiopsis kenyana. Int J Mol Sci 2023; 24:11274. [PMID: 37511033 PMCID: PMC10379350 DOI: 10.3390/ijms241411274] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/29/2023] [Accepted: 07/02/2023] [Indexed: 07/30/2023] Open
Abstract
Pestalotiopsis sp. is an important class of plant pathogenic fungi that can infect a variety of crops. We have proved the pathogenicity of P. kenyana on bayberry leaves and caused bayberry blight. Phenazine-1-carboxylic acid (PCA) has the characteristics of high efficiency, low toxicity, and environmental friendliness, which can prevent fungal diseases on a variety of crops. In this study, the effect of PCA on the morphological, physiological, and molecular characteristics of P. kenyana has been investigated, and the potential antifungal mechanism of PCA against P. kenyana was also explored. We applied PCA on P. kenyana in vitro and in vivo to determine its inhibitory effect on PCA. It was found that PCA was highly efficient against P. kenyana, with EC50 around 2.32 μg/mL, and the in vivo effect was 57% at 14 μg/mL. The mechanism of PCA was preliminarily explored by transcriptomics technology. The results showed that after the treatment of PCA, 3613 differential genes were found, focusing on redox processes and various metabolic pathways. In addition, it can also cause mycelial development malformation, damage cell membranes, reduce mitochondrial membrane potential, and increase ROS levels. This result expanded the potential agricultural application of PCA and revealed the possible mechanism against P. kenyana.
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Affiliation(s)
- Weizhi Xun
- Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Bing Gong
- Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Xingxin Liu
- Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Xiuju Yang
- Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
- College of Tea, Guizhou University, Guiyang 550025, China
| | - Xia Zhou
- Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Linhong Jin
- Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
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12
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Ding YY, Sun Y, Luo XF, Zhang SY, Wang R, Yang ZG, Wang JR, Zhang BQ, Zhang ZJ, Ma Y, An JX, Zhou H, Liu YQ. Anti-phytopathogenic activity and the mechanisms of phthalides from Angelica sinensis (Oliv.) Diels. PEST MANAGEMENT SCIENCE 2023; 79:2135-2146. [PMID: 36721354 DOI: 10.1002/ps.7389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/20/2023] [Accepted: 02/01/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND The resistance of traditional chemical fungicides to plant pathogenic fungi and the threats to the safety of humans and the environment highlight an urgent need to find safe and efficient alternatives to chemical fungicides. Owing to the wide spectrum of antifungal activities, low persistence and nontoxicity to mammals and aquatic life, essential oils have considerable potential as low-risk pesticides. In this study, the essential oil and the main components of Angelica sinensis (Oliv.) Diels (Danggui) were extracted, analyzed by GC-MS, and evaluated for their antifungal activities against six plant pathogenic fungi. RESULTS 3-butylidenephthalide (3-BPH) showed the best antifungal activity against Fusarium graminearum with an EC50 value of 14.35 μg mL-1 . The antifungal mechanistic studies revealed that 3-BPH induced the generation of endogenous ROS to cause lipid peroxidation of the cell membrane and inhibited the biosynthesis of ergosterol, thereby causing the cell membrane damaged to exert its fungicidal activity. Significantly, 3-BPH could reduce deoxynivalenol production compared to the control. CONCLUSION This study demonstrated the potent fungicidal activity of natural phthalide compound 3-BPH and highlighted its potential as an alternative agent to control F. graminearum. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Yan-Yan Ding
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Yu Sun
- School of Pharmacy, Lanzhou University, Lanzhou, China
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou, China
| | - Xiong-Fei Luo
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou, China
| | - Rui Wang
- Key Laboratory of Biochemistry and Molecular Biology in Universities of Shandong Province, Weifang University, Weifang, China
| | - Zhi-Gang Yang
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Jing-Ru Wang
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Bao-Qi Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Yue Ma
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Jun-Xia An
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Han Zhou
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou, China
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou, China
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou, China
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13
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Yu W, Jiang Z, Zhang Z, Jiang L, Liu C, Lu C, Liang Z, Wang G, Yan J. The Wu-Shi-Cha formula protects against ulcerative colitis by orchestrating immunity and microbiota homeostasis. JOURNAL OF ETHNOPHARMACOLOGY 2023; 304:116075. [PMID: 36572328 DOI: 10.1016/j.jep.2022.116075] [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: 09/25/2022] [Revised: 12/16/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ulcerative colitis (UC) has become a healthy burden worldwide due to its insidious onset and repetitive relapse, with a rather complex etiology, including inappropriate immune response, dysbiosis, genetic susceptibility, and unhealthy diets. The Wu-Shi-Cha (WSC) formula is a widely utilized drug to protect against gastrointestinal disorders. AIM OF THE STUDY The study aspired to dissect the pertinent mechanisms of the WSC to treat UC. MATERIALS AND METHODS Network pharmacology and weighted gene co-expression network analysis (WGCNA) were performed to predict the targets of WSC in the context of UC and colorectal cancer. Dextran sodium sulfate (DSS) was used to construct murine models of experimental colitis, and the WSC was given to colitis mice for 14 days. Feces and colon samples were subjected to 16S rRNA gene sequencing combined with liquid chromatography-mass spectrometry (LC-MS) and biochemical experiments, respectively. RESULTS Network pharmacology analysis predicted that the WSC formula could orchestrate inflammation, infection, and tumorigenesis, and WGCNA based on The Cancer Genome Atlas (TCGA) database showed a potent anti-neoplastic effect of the WSC therapy for colorectal cancer. The WSC therapy rescued bursts of pro-inflammatory cytokines and colonic epithelial collapse in DSS-induced colitis mice. Moreover, the high dose of WSC treatment facilitated the alternative activation of peritoneal macrophages (Mφs) and these Mφs were conducive to the survival of intestinal stem cells (ISCs), and the disturbed homeostasis of gut microbiota was re-established after WSC treatment, as evidenced by the decreased colonization of pathological taxa in the fecal samples. CONCLUSION The WSC formula suppresses inflammation and re-establishes the homeostasis of gut microbiota, thereby ameliorating colitis progression.
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Affiliation(s)
- Wei Yu
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Zizheng Jiang
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Zhiqiang Zhang
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Lu Jiang
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Chen Liu
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Chang Lu
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Zhenghao Liang
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Guoliang Wang
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
| | - Jing Yan
- Department of Physiology, Jining Medical University, Jining city, Shandong province, China.
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14
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Fan Y, Liu K, Lu R, Gao J, Song W, Zhu H, Tang X, Liu Y, Miao M. Cell-Free Supernatant of Bacillus subtilis Reduces Kiwifruit Rot Caused by Botryosphaeria dothidea through Inducing Oxidative Stress in the Pathogen. J Fungi (Basel) 2023; 9:jof9010127. [PMID: 36675948 PMCID: PMC9862322 DOI: 10.3390/jof9010127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/14/2023] [Accepted: 01/14/2023] [Indexed: 01/18/2023] Open
Abstract
Biological control of postharvest diseases has been proven to be an effective alternative to chemical control. As an environmentally friendly biocontrol agent, Bacillus subtilis has been widely applied. This study explores its application in kiwifruit soft rot and reveals the corresponding mechanisms. Treatment with cell-free supernatant (CFS) of Bacillus subtilis BS-1 significantly inhibits the mycelial growth of the pathogen Botryosphaeria dothidea and attenuates the pathogenicity on kiwifruit in a concentration-dependent manner. In particular, mycelial growth diameter was only 21% of the control after 3 days of treatment with 5% CFS. CFS caused swelling and breakage of the hyphae of B. dothidea observed by scanning electron microscopy, resulting in the leakage of nucleic acid and soluble protein and the loss of ergosterol content. Further analysis demonstrated that CFS significantly induces the expression of Nox genes associated with reactive oxygen species (ROS) production by 1.9-2.7-fold, leading to a considerable accumulation of ROS in cells and causing mycelial cell death. Our findings demonstrate that the biocontrol effect of B. subtilis BS-1 CFS on B. dothidea is realized by inducing oxidative damage to the mycelia cell.
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Affiliation(s)
- Yezhen Fan
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
| | - Kui Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
- Institute of Botany, The Chinese Academy of Sciences, Beijing 230094, China
| | - Ruoxi Lu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
| | - Jieyu Gao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
| | - Wu Song
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
| | - Hongyan Zhu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
| | - Xiaofeng Tang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
| | - Yongsheng Liu
- Ministry of Education Key Laboratory for Bio-Resource and Eco-Environment, State Key Laboratory of Hydraulics and Mountain River Engineering, College of Life Science, Sichuan University, Chengdu 610064, China
- School of Horticulture, Anhui Agricultural University, Hefei 230036, China
| | - Min Miao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230036, China
- Correspondence:
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15
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Drug repurposing strategy II: from approved drugs to agri-fungicide leads. J Antibiot (Tokyo) 2023; 76:131-182. [PMID: 36707717 PMCID: PMC9880955 DOI: 10.1038/s41429-023-00594-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/22/2022] [Accepted: 12/27/2022] [Indexed: 01/28/2023]
Abstract
Epidemic diseases of crops caused by fungi deeply affected the course of human history and processed a major restriction on social and economic development. However, with the enormous misuse of existing antimicrobial drugs, an increasing number of fungi have developed serious resistance to them, making the diseases caused by pathogenic fungi even more challenging to control. Drug repurposing is an attractive alternative, it requires less time and investment in the drug development process than traditional R&D strategies. In this work, we screened 600 existing commercially available drugs, some of which had previously unknown activity against pathogenic fungi. From the primary screen at a fixed concentration of 100 μg/mL, 120, 162, 167, 85, 102, and 82 drugs were found to be effective against Rhizoctonia solani, Sclerotinia sclerotiorum, Botrytis cinerea, Phytophthora capsici, Fusarium graminearum and Fusarium oxysporum, respectively. They were divided into nine groups lead compounds, including quinoline alkaloids, benzimidazoles/carbamate esters, azoles, isothiazoles, pyrimidines, pyridines, piperidines/piperazines, ionic liquids and miscellaneous group, and simple structure-activity relationship analysis was carried out. Comparison with fungicides to identify the most promising drugs or lead structures for the development of new antifungal agents in agriculture.
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16
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Ma Y, Zhou R, Luo X, Li A, Wang R, Zhang B, Zhou H, Wu T, Wang Y, An J, Zhang Z, Zhao W, Yang C, Ding YY, Liu Y. Inhibition of
Fusarium Graminearum
Growth and Deoxynivalenol Biosynthesis by Phenolic Compounds. ChemistrySelect 2022. [DOI: 10.1002/slct.202201546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Yue Ma
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Rui Zhou
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xiong‐Fei Luo
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - An‐Ping Li
- Gansu Institute for Drug Control State Key Laboratory of Grassland Agro-ecosystems Lanzhou 730000 P. R. China
| | - Rui Wang
- Key Laboratory of Biochemistry and Molecular Biology in Universities of Shandong Province State Key Laboratory of Grassland Agro-ecosystems Weifang University Weifang 261061 China
| | - Bao‐Qi Zhang
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Han Zhou
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Tian‐Lin Wu
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Yi‐Rong Wang
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Jun‐Xia An
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Zhi‐Jun Zhang
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Wen‐Bin Zhao
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Cheng‐Jie Yang
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Yan Yan Ding
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
| | - Ying‐Qian Liu
- School of Pharmacy Lanzhou University Lanzhou 730000 People's Republic of China
- School of Pharmacy Lanzhou University State Key Laboratory of Grassland Agro-ecosystems Lanzhou University Lanzhou 730000 China
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17
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Wang Y, Xu Y, Liu Z. A review of plant antipathogenic constituents: Source, activity and mechanism. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 188:105225. [PMID: 36464345 DOI: 10.1016/j.pestbp.2022.105225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 07/25/2022] [Accepted: 09/05/2022] [Indexed: 06/17/2023]
Abstract
Green prevention and control of plant pathogens is a development direction of sustainable and low-carbon agriculture given the limitation of traditional chemicals. Plant-derived antipathogenic constituents (PAPCs) exhibit the advantages of being environmental benign and a broad spectrum of target pathogens over traditional chemicals. Here, we review the research advances on plant sources, chemical compositions, activities of antipathogenic constituents in the past 20 years. Reported PAPCs are classified into categories of phenols, flavonoids, terpenoids, alkaloids and antimicrobial peptides. Angiosperms, gymnosperms and some lower plants are the main plant source of detected PAPCs. The PAPCs act on pathogens through multiple pathways including destroying cell structures, blocking key composition synthesis and inhibiting cell metabolism. The development trends of PAPCs are finally prospected. This review serves as a comprehensive review on the study of plant antipathogenic constituents and a key reference for forecasting the source, characteristic and activity of PAPC.
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Affiliation(s)
- Yueyao Wang
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Yongdong Xu
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Zhidan Liu
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
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18
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Gong C, Liu M, Liu D, Wang Q, Hasnain A, Zhan X, Pu J, Liang Y, Liu X, Wang X. Status of Fungicide Resistance and Physiological Characterization of Tebuconazole Resistance in Rhizocotonia solani in Sichuan Province, China. Curr Issues Mol Biol 2022; 44:4859-4876. [PMID: 36286045 PMCID: PMC9600323 DOI: 10.3390/cimb44100330] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/23/2022] [Accepted: 10/10/2022] [Indexed: 11/30/2022] Open
Abstract
The resistance prevalence of chemical fungicides has caused increasingly serious agro-ecological environmental problems. However, there are few previous reports about resistance to succinate dehydrogenase (SDHI) or sterol demethylation inhibitor (DMI) in Rhizoctonia solani, one of the main agro-diseases. In this study, the fungicide resistance of 122 R. solani isolates in Sichuan Province was monitored by the mycelial growth rate method. Results showed that all isolates were susceptible to hexaconazole and most isolates were susceptible to thifluzamide, except for the field isolate MSRS-2-7 due to a moderate resistance to thifluzamide (16.43-fold resistance ratio, RR), compared to the sensitivity baseline of thifluzamide (0.042 μg/mL EC50 values). On the contrary, many isolates showed moderate or high resistance to tebuconazole (10.59- to 60.78-fold RR), reaching EC50 values of 0.54~3.10 μg/mL, especially for a highly resistant isolate LZHJ-1-8 displaying moderate resistance to epoxiconazole (35.40-fold RR due to a 3.54 μg/mL EC50 value). The fitness determination found that the tebuconazole-resistant isolates showed higher fitness cost with these characteristics, including a lower growth rate, higher relative electric conductivity, an increased ability to tolerate tebuconazole, and high osmotic pressure. Four new mutations of cytochrome P450 sterol 14α-demethylase (CYP51), namely, S94A, N406S, H793R, and L750P, which is the target for DMI fungicides, was found in the tebuconazole-resistant isolates. Furthermore, the lowest binding energy with tebuconazole was also found in the LZHJ-1-8 isolate possessing all the mutations through analyses with Discovery Studio software. Therefore, these new mutation sites of CYP51 may be linked to the resistance against tebuconazole, and its application for controlling R. solani should be restricted in some areas.
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Affiliation(s)
- Changwei Gong
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Min Liu
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Dan Liu
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiulin Wang
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Ali Hasnain
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoxu Zhan
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Jian Pu
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Yueyang Liang
- Rice Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuemei Liu
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuegui Wang
- College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence:
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19
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Zhao WB, An JX, Hu YM, Li AP, Zhang SY, Zhang BQ, Zhang ZJ, Luo XF, Bian Q, Ma Y, Ding YY, Wang R, Liu YQ. Tavaborole-Induced Inhibition of the Aminoacyl-tRNA Biosynthesis Pathway against Botrytis cinerea Contributes to Disease Control and Fruit Quality Preservation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12297-12309. [PMID: 36149871 DOI: 10.1021/acs.jafc.2c03441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The inhibitory effect of tavaborole on the invasion of Botrytis cinerea in grapes and tomatoes, as well as the potential mechanism involved, was discovered in this study. Our findings showed that tavaborole inhibited Botrytis cinerea spore germination and mycelial expansion in vitro and that the control efficiency in vivo on fruit decay was dose-dependent, which was effective in reducing disease severity and maintaining the organoleptic quality of the fruit, such as reducing weight loss and retaining fruit hardness and titratable acid contents during storage. Furthermore, the precise mechanism of action was investigated further. Propidium iodide staining revealed that Botrytis cinerea treated with tavaborole lost membrane integrity. For further validation, cytoplasmic malondialdehyde accumulation and leakage of cytoplasmic constituents were determined. Notably, the inhibitory effect was also dependent on inhibiting the activities of aminoacyl-tRNA synthetases involved in the aminoacyl-tRNA biosynthesis pathway in Botrytis cinerea. The above findings concluded that tavaborole was effective against Botrytis cinerea infection in postharvest fruit, and a related mechanism was also discussed, which may provide references for the drug repurposing of tavaborole as a postharvest fungicide.
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Affiliation(s)
- Wen-Bin Zhao
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jun-Xia An
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yong-Mei Hu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - An-Ping Li
- Gansu Institute for Drug Control, Lanzhou 730000, P. R. China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
| | - Bao-Qi Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiong-Fei Luo
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Qiang Bian
- National Pesticide Engineering Research Center (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yue Ma
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yan-Yan Ding
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Rui Wang
- Key Laboratory of Biochemistry and Molecular Biology in Universities of Shandong Province, Weifang University, Weifang 261061, China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730000, China
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20
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Zhou Y, Yang CJ, Luo XF, Li AP, Zhang SY, An JX, Zhang ZJ, Ma Y, Zhang BQ, Liu YQ. Design, synthesis, and biological evaluation of novel berberine derivatives against phytopathogenic fungi. PEST MANAGEMENT SCIENCE 2022; 78:4361-4376. [PMID: 35758905 DOI: 10.1002/ps.7055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/01/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The abuse of chemical fungicides not only leads to toxic residues and resistance in plant pathogenic fungi, but also causes environmental pollution and side effects on in humans and animals. Based on the antifungal activities of berberine, seven different types of berberine derivatives (A1-G1) were synthesized, and their antifungal activities against six plant pathogenic fungi were evaluated (Rhizoctonia solani, Botrytis cinerea, Fusarium graminearum, Phytophthora capsici, Sclerotinia sclerotiorum, and Magnaporthe oryzae). RESULTS The results for antifungal activities in vitro showed that berberine derivative E1 displayed good antifungal activity against R. solani with a median effective concentration (EC50 ) of 1.77 μg ml-1 , and berberine derivatives F1 and G1 demonstrated broad-spectrum antifungal activities with EC50 values ranging from 4.43 to 42.23 μg ml-1 against six plant pathogenic fungi. Berberine derivatives (E2-E29, F2-F18, and G2-G9) were further synthesized to investigate the structure-activity relationship (SAR), and compound E20 displayed significant antifungal activity against R. solani with an EC50 value of 0.065 μg ml-1 . Preliminary mechanism studies showed that E20 could cause mycelial shrinkage, cell membrane damage, mitochondrial abnormalities and the accumulation of harmful reactive oxygen species, resulting in cell death in R. solani. Moreover, in vivo experimental results showed that the protective effect of E20 was 97.31% at 5 μg ml-1 , which was better than that of the positive control thifluzamide (50.13% at 5 μg ml-1 ). CONCLUSION Berberine derivative E20 merits further development as a new drug candidate with selective and excellent antifungal activity against R. solani. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Yong Zhou
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
| | - Cheng-Jie Yang
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
| | - Xiong-Fei Luo
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
| | - An-Ping Li
- Gansu Institute for Drug Control, Lanzhou, People's Republic of China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou, People's Republic of China
| | - Jun-Xia An
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
| | - Yue Ma
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
| | - Bao-Qi Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou, People's Republic of China
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou, People's Republic of China
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou, People's Republic of China
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Marena GD, Ramos MADS, Carvalho GC, Junior JAP, Resende FA, Corrêa I, Ono GYB, Sousa Araujo VH, Camargo BAF, Bauab TM, Chorilli M. Natural product‐based nanomedicine applied to fungal infection treatment: A review of the last 4 years. Phytother Res 2022; 36:2710-2745. [DOI: 10.1002/ptr.7460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/25/2022] [Accepted: 03/26/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Gabriel Davi Marena
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Matheus Aparecido dos Santos Ramos
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Gabriela Corrêa Carvalho
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | | | | | - Ione Corrêa
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Gabriela Yuki Bressanim Ono
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Victor Hugo Sousa Araujo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Bruna Almeida Furquim Camargo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Tais Maria Bauab
- Department of Biological Sciences and Health University of Araraquara (UNIARA) Araraquara Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
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22
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Zhang L, Shi Y, Duan X, He W, Si H, Wang P, Chen S, Luo H, Rao X, Wang Z, Liao S. Novel Citral-thiazolyl Hydrazine Derivatives as Promising Antifungal Agents against Phytopathogenic Fungi. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14512-14519. [PMID: 34809431 DOI: 10.1021/acs.jafc.1c04064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
To develop new antifungal agents against phytopathogenic fungi, a series of citral-thiazolyl hydrazine derivatives were designed, synthesized, and characterized by FT-IR, 1H NMR, 13C NMR, and HRMS. Antifungal activity results showed that most synthetic compounds exhibited broad-spectrum antifungal activities against six phytopathogenic fungi in vitro. Notably, compounds b and c15 exhibited remarkable antifungal activity against Colletotrichum gloeosprioides, Rhizoctonia solani, Phytophthora nicotianae var. nicotianae, Diplodia pinea, Colletotrichum acutatum, and Fusarium oxysporum f. sp. niveum, which were all superior to the positive control tricyclazole. Structure-activity relationship (SAR) studies demonstrated that introducing electron-withdrawing groups such as F on the benzene ring exhibited outstanding antifungal activities against all the tested fungi. Furthermore, compound b could effectively control rice sheath blight and showed higher curative activities against R. solani than validamycin·bacillus in vivo. In addition, the in vitro cytotoxicity results indicated that compound b possessed moderate cytotoxicity activity, and all citral-thiazolyl hydrazine derivatives exhibited lower or no cytotoxicity to the LO2 and HEK293 cell lines. In addition, the acute oral toxicity test showed that compound b had moderate toxicity (level II) with an LD50 value of 310 mg/kg bw (95% confidence limit: 175-550 mg/kg bw). Finally, a preliminary action mechanism study showed that causing obvious malformation of mycelium and increasing cell membrane permeability are two of the potential mechanisms by which compound b exerts antifungal activity. The present work indicates that some of these derivatives may serve as novel potential fungicides, and compound b is expected to be the leading structure for the development of new antifungal agents.
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Affiliation(s)
- Li Zhang
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Yunfei Shi
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Xinying Duan
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Wanrong He
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Hongyan Si
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Peng Wang
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Shangxing Chen
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Hai Luo
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Xiaoping Rao
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, People's Republic of China
| | - Zongde Wang
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
| | - Shengliang Liao
- College of Forestry, Jiangxi Agricultural University; East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration; Camphor Engineering Research Center of National Forestry and Grassland Administration/Jiangxi Province, Nanchang 330045, People's Republic of China
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Hu H, Hu C, Peng J, Ghosh AK, Khan A, Sun D, Luyten W. Bioassay-Guided Interpretation of Antimicrobial Compounds in Kumu, a TCM Preparation From Picrasma quassioides' Stem via UHPLC-Orbitrap-Ion Trap Mass Spectrometry Combined With Fragmentation and Retention Time Calculation. Front Pharmacol 2021; 12:761751. [PMID: 34776978 PMCID: PMC8581800 DOI: 10.3389/fphar.2021.761751] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 09/16/2021] [Indexed: 12/03/2022] Open
Abstract
The stem of Picrasma quassioides (PQ) was recorded as a prominent traditional Chinese medicine, Kumu, which was effective for microbial infection, inflammation, fever, and dysentery, etc. At present, Kumu is widely used in China to develop different medicines, even as injection (Kumu zhusheye), for combating infections. However, the chemical basis of its antimicrobial activity has still not been elucidated. To examine the active chemicals, its stem was extracted to perform bioassay-guided purification against Staphylococcus aureus and Escherichia coli. In this study, two types of columns (normal and reverse-phase) were used for speedy bioassay-guided isolation from Kumu, and the active peaks were collected and identified via an UHPLC-Orbitrap-Ion Trap Mass Spectrometer, combined with MS Fragmenter and ChromGenius. For identification, the COCONUT Database (largest database of natural products) and a manually built PQ database were used, in combination with prediction and calculation of mass fragmentation and retention time to better infer their structures, especially for isomers. Moreover, three standards were analyzed under different conditions for developing and validating the MS method. A total of 25 active compounds were identified, including 24 alkaloids and 1 triterpenoid against S. aureus, whereas only β-carboline-1-carboxylic acid and picrasidine S were active against E. coli. Here, the good antimicrobial activity of 18 chemicals was reported for the first time. Furthermore, the spectrum of three abundant β-carbolines was assessed via their IC50 and MBC against various human pathogens. All of them exhibited strong antimicrobial activities with good potential to be developed as antibiotics. This study clearly showed the antimicrobial chemical basis of Kumu, and the results demonstrated that HRMS coupled with MS Fragmenter and ChromGenius was a powerful tool for compound analysis, which can be used for other complex samples. Beta-carbolines reported here are important lead compounds in antibiotic discovery.
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Affiliation(s)
- Haibo Hu
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Leuven, Belgium.,National Engineering Research Center for Modernization of Traditional Chinese Medicine - Hakka Medical Resources Branch, School of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Changling Hu
- Laboratory for Functional Foods and Human Health, Center for Excellence in Postharvest Technologies, North Carolina Agricultural and Technical State University, North Carolina Research Campus, Kannapolis, NC, United States
| | - Jinnian Peng
- National Engineering Research Center for Modernization of Traditional Chinese Medicine - Hakka Medical Resources Branch, School of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Alokesh Kumar Ghosh
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Leuven, Belgium
| | - Ajmal Khan
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Leuven, Belgium
| | - Dan Sun
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Leuven, Belgium.,College of Life Sciences, NanKai University, Tianjin, China
| | - Walter Luyten
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Leuven, Belgium
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24
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Li H, He YH, Hu YM, Chu QR, Chen YJ, Wu ZR, Zhang ZJ, Liu YQ, Yang CJ, Liang HJ, Yan YF. Design, Synthesis, and Structure-Activity Relationship Studies of Magnolol Derivatives as Antifungal Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11781-11793. [PMID: 34582205 DOI: 10.1021/acs.jafc.1c01838] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Plant pathogenic fungi seriously affect agricultural production and are difficult to control. The discovery of new leads based on natural products is an important way to innovate fungicides. In this study, 30 natural-product-based magnolol derivatives were synthesized and characterized on the basis of NMR and mass spectroscopy. Bioactivity tests on phytopathogenic fungi (Rhizoctonia solani, Fusarium graminearum, Botrytis cinerea, and Sclerotinia sclerotiorum) in vitro of these compounds were performed systematically. The results showed that 11 compounds were active against four kinds of phytopathogenic fungi with EC50 values in the range of 1.40-20.00 μg/mL, especially compound L5 that exhibited excellent antifungal properties against B. cinerea with an EC50 value of 2.86 μg/mL, approximately 2.8-fold more potent than magnolol (EC50 = 8.13 μg/mL). Moreover, compound L6 showed the highest antifungal activity against F. graminearum and Rhophitulus solani with EC50 values of 4.39 and 1.40 μg/mL, respectively, and compound L7 showed good antifungal activity against S. sclerotiorum. Then, an in vivo experiment of compound L5 against B. cinerea was further investigated in vivo using infected tomatoes (curative effect, 50/200 and 36%/100 μg/mL). The physiological and biochemical studies illustrated that the primary action mechanism of compound L5 on B. cinerea might change the mycelium morphology, increase cell membrane permeability, and destroy the function of mitochondria. Furthermore, structure-activity relationship (SAR) studies revealed that hydroxyl groups play a key role in antifungal activity. To sum up, this study provides a reference for understanding the application of magnolol-based antifungal agents in crop protection.
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Affiliation(s)
- Hu Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Hui He
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yong-Mei Hu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Qing-Ru Chu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yong-Jia Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhen-Rong Wu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Cheng-Jie Yang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hong-Jie Liang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yin-Fang Yan
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
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25
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Yang R, Chen X, Huang Q, Chen C, Rengasamy KRR, Chen J, Wan C(C. Mining RNA-Seq Data to Depict How Penicillium digitatum Shapes Its Transcriptome in Response to Nanoemulsion. Front Nutr 2021; 8:724419. [PMID: 34595200 PMCID: PMC8476847 DOI: 10.3389/fnut.2021.724419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 08/18/2021] [Indexed: 02/05/2023] Open
Abstract
Penicillium digitatum is the most severe pathogen that infects citrus fruits during storage. It can cause fruit rot and bring significant economic losses. The continuous use of fungicides has resulted in the emergence of drug-resistant strains. Consequently, there is a need to develop naturally and efficiently antifungal fungicides. Natural antimicrobial agents such as clove oil, cinnamon oil, and thyme oil can be extracted from different plant parts. They exhibited broad-spectrum antimicrobial properties and have great potential in the food industry. Here, we exploit a novel cinnamaldehyde (CA), eugenol (EUG), or carvacrol (CAR) combination antifungal therapy and formulate it into nanoemulsion form to overcome lower solubility and instability of essential oil. In this study, the antifungal activity evaluation and transcriptional profile of Penicillium digitatum exposed to compound nanoemulsion were evaluated. Results showed that compound nanoemulsion had a striking inhibitory effect on P. digitatum in a dose-dependent manner. According to RNA-seq analysis, there were 2,169 differentially expressed genes (DEGs) between control and nanoemulsion-treated samples, including 1,028 downregulated and 1,141 upregulated genes. Gene Ontology (GO) analysis indicated that the DEGs were mainly involved in intracellular organelle parts of cell component: cellular respiration, proton transmembrane transport of biological process, and guanyl nucleotide-binding molecular function. KEGG analysis revealed that metabolic pathway, biosynthesis of secondary metabolites, and glyoxylate and dicarboxylate metabolism were the most highly enriched pathways for these DEGs. Taken together, we can conclude the promising antifungal activity of nanoemulsion with multiple action sites against P. digitatum. These outcomes would deepen our knowledge of the inhibitory mechanism from molecular aspects and exploit naturally, efficiently, and harmlessly antifungal agents in the citrus postharvest industry.
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Affiliation(s)
- Ruopeng Yang
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
- College of Life Science and Technology, Honghe University, Mengzi, China
| | - Xiu Chen
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Qiang Huang
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Chuying Chen
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Kannan R. R. Rengasamy
- Green Biotechnologies Research Centre of Excellence, University of Limpopo, Mankweng, South Africa
| | - Jinyin Chen
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, China
| | - Chunpeng (Craig) Wan
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
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