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Yang Z, Sun X, Qiu Y, Jin D, Zheng Y, Li J, Gu W. Design, Synthesis, and Biological Evaluation of Novel Camphor-Based Hydrazide and Sulfonamide Derivatives as Laccase Inhibitors against Plant Pathogenic Fungi/Oomycetes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14151-14163. [PMID: 37748922 DOI: 10.1021/acs.jafc.3c02966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
To discover novel natural product-based fungicidal agrochemicals, 41 novel camphanic acid hydrazide and camphor sulfonamide derivatives were designed, synthesized, and tested for their antifungal profile against four plant pathogenic fungi and three oomycetes. As a result, some derivatives presented pronounced inhibitory activities toward Botryosphaeria dothidea, Fusarium graminearum, Phytophthora capsici, and Phytophthora nicotianae. Especially, compound 4b demonstrated the most potent anti-B. dothidea activity (EC50 = 1.28 mg/L), much stronger than positive control chlorthalonil. The in vivo assay showed that 4b displayed significant protective and curative effects on apple fruits infected by B. dothidea. The primary antifungal mechanism study revealed that 4b could obviously enhance the cell membrane permeability, destroy the mycelial surface morphology and the cell ultrastructure, and reduce the ergosterol and exopolysaccharide contents of B. dothidea. Further, 4b showed potent laccase inhibitory activity in vitro with an IC50 value of 11.3 μM, superior to positive control cysteine. The molecular docking study revealed that 4b could dock well into the active site of laccase by forming multiple interactions with the key residues in the pocket. The acute oral toxicity test in rats presented that 4b had slight toxicity with an LD50 value of 849.1 mg/kg bw (95% confidence limit: 403.9-1785.3 mg/kg bw). This research identified that the camphanic acid hydrazide derivatives could be promising leads for the development of novel laccase-targeting fungicides.
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Affiliation(s)
- Zihui Yang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xuebao Sun
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yigui Qiu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Daojun Jin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yiming Zheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jia Li
- School of Foreign Languages, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Wen Gu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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He Y, Zhang K, Li S, Lu X, Zhao H, Guan C, Huang X, Shi Y, Kang Z, Fan Y, Li W, Chen C, Li G, Long O, Chen Y, Hu M, Cheng J, Xu B, Chapman MA, Georgiev MI, Fernie AR, Zhou M. Multiomics analysis reveals the molecular mechanisms underlying virulence in Rhizoctonia and jasmonic acid-mediated resistance in Tartary buckwheat (Fagopyrum tataricum). THE PLANT CELL 2023; 35:2773-2798. [PMID: 37119263 PMCID: PMC10396374 DOI: 10.1093/plcell/koad118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 06/19/2023]
Abstract
Rhizoctonia solani is a devastating soil-borne pathogen that seriously threatens the cultivation of economically important crops. Multiple strains with a very broad host range have been identified, but only 1 (AG1-IA, which causes rice sheath blight disease) has been examined in detail. Here, we analyzed AG4-HGI 3 originally isolated from Tartary buckwheat (Fagopyrum tataricum), but with a host range comparable to AG1-IA. Genome comparison reveals abundant pathogenicity genes in this strain. We used multiomic approaches to improve the efficiency of screening for disease resistance genes. Transcriptomes of the plant-fungi interaction identified differentially expressed genes associated with virulence in Rhizoctonia and resistance in Tartary buckwheat. Integration with jasmonate-mediated transcriptome and metabolome changes revealed a negative regulator of jasmonate signaling, cytochrome P450 (FtCYP94C1), as increasing disease resistance probably via accumulation of resistance-related flavonoids. The integration of resistance data for 320 Tartary buckwheat accessions identified a gene homolog to aspartic proteinase (FtASP), with peak expression following R. solani inoculation. FtASP exhibits no proteinase activity but functions as an antibacterial peptide that slows fungal growth. This work reveals a potential mechanism behind pathogen virulence and host resistance, which should accelerate the molecular breeding of resistant varieties in economically essential crops.
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Affiliation(s)
- Yuqi He
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya 572024, China
| | - Kaixuan Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Shijuan Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiang Lu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Hui Zhao
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Chaonan Guan
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya 572024, China
| | - Xu Huang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Yaliang Shi
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Zhen Kang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Yu Fan
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Wei Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Cheng Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Guangsheng Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Ou Long
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Yuanyuan Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Mang Hu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Jianping Cheng
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Bingliang Xu
- College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Mark A Chapman
- Biological Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Milen I Georgiev
- Laboratory of Metabolomics, Institute of Microbiology, Bulgarian Academy of Sciences, Plovdiv 4000, Bulgaria
- Center of Plant Systems Biology and Biotechnology, Plovdiv 4000, Bulgaria
| | - Alisdair R Fernie
- Center of Plant Systems Biology and Biotechnology, Plovdiv 4000, Bulgaria
- Department of Molecular Physiology, Max-Planck-Institute of Molecular Plant Physiology, Potsdam 14476, Germany
| | - Meiliang Zhou
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya 572024, China
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Wleklik K, Borek S. Vacuolar Processing Enzymes in Plant Programmed Cell Death and Autophagy. Int J Mol Sci 2023; 24:ijms24021198. [PMID: 36674706 PMCID: PMC9862320 DOI: 10.3390/ijms24021198] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Vacuolar processing enzymes (VPEs) are plant cysteine proteases that are subjected to autoactivation in an acidic pH. It is presumed that VPEs, by activating other vacuolar hydrolases, are in control of tonoplast rupture during programmed cell death (PCD). Involvement of VPEs has been indicated in various types of plant PCD related to development, senescence, and environmental stress responses. Another pathway induced during such processes is autophagy, which leads to the degradation of cellular components and metabolite salvage, and it is presumed that VPEs may be involved in the degradation of autophagic bodies during plant autophagy. As both PCD and autophagy occur under similar conditions, research on the relationship between them is needed, and VPEs, as key vacuolar proteases, seem to be an important factor to consider. They may even constitute a potential point of crosstalk between cell death and autophagy in plant cells. This review describes new insights into the role of VPEs in plant PCD, with an emphasis on evidence and hypotheses on the interconnections between autophagy and cell death, and indicates several new research opportunities.
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