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Chi Y, He HW, Chen CY, Zhao SY, Zhou H, Xu D, Liu X, Xu G. Furofuran Lignans for Plant Protection: Discovery of Sesamolin and Its Derivatives as Novel Anti-Tobacco Mosaic Virus and Antibacterial Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37418668 DOI: 10.1021/acs.jafc.3c03257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/09/2023]
Abstract
Natural products have been a valuable source of efficient and low-risk pesticides. In this work, a series of novel sesamolin derivatives A0-A31 and B0-B4 were designed and synthesized via structural simplification of furofuran lignan phrymarolin II, and their antiviral and antibacterial activities were systematically evaluated. The bioassay results showed that compound A24 displayed remarkable inactivation activity against tobacco mosaic virus (TMV) with an EC50 value of 130.4 μg/mL, which was superior to that of commercial ningnanmycin (EC50 = 202.0 μg/mL). The antiviral mode of action assays suggested that compound A24 may obstruct self-assembly by binding to TMV coat protein (CP), thus resisting the TMV infection. In addition, compound A25 possessed prominent antibacterial activities, especially against Ralstonia solanacearum with an EC50 value of 43.8 μg/mL, which is better than those of commercial bismerthiazol and thiodiazole copper. This research lays a solid foundation for the utilization of furofuran lignans in crop protection.
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Affiliation(s)
- Yuan Chi
- College of Plant Protection, Northwest A&F University, 3 Taicheng Road, Yangling, Shaanxi 712100, China
| | - Hong-Wei He
- College of Plant Protection, Northwest A&F University, 3 Taicheng Road, Yangling, Shaanxi 712100, China
| | - Cai-Yun Chen
- College of Plant Protection, Northwest A&F University, 3 Taicheng Road, Yangling, Shaanxi 712100, China
| | - Si-Ying Zhao
- College of Plant Protection, Northwest A&F University, 3 Taicheng Road, Yangling, Shaanxi 712100, China
| | - Huan Zhou
- College of Plant Protection, Northwest A&F University, 3 Taicheng Road, Yangling, Shaanxi 712100, China
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
| | - Dan Xu
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Xili Liu
- College of Plant Protection, Northwest A&F University, 3 Taicheng Road, Yangling, Shaanxi 712100, China
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
| | - Gong Xu
- College of Plant Protection, Northwest A&F University, 3 Taicheng Road, Yangling, Shaanxi 712100, China
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
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Wei C, Yang X, Shi S, Bai L, Hu D, Song R, Song B. 3-Hydroxy-2-oxindole Derivatives Containing Sulfonamide Motif: Synthesis, Antiviral Activity, and Modes of Action. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:267-275. [PMID: 36537356 DOI: 10.1021/acs.jafc.2c06881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
3-Hydroxy-2-oxindole motif constitutes a core structure in numerous natural products and imparts notable biological activities. Here, we describe the design and synthesis of four series of novel 3-substituted-3-hydroxy-2-oxindole derivatives containing sulfonamide moiety along with their antiviral activities against potato virus Y (PVY). Compound 10b displayed optimal antiviral activity and superior anti-PVY activity compared with the lead compound and commercial Ningnanmycin in terms of curative and protective effects. Additionally, 10b considerably inhibited PVY systemic infection in Nicotiana benthamiana. Physiological and biochemical analyses revealed that the activities of the four crucial defense-related enzymes increased in the tobacco plant following treatment with 10b. RNA-sequencing analysis revealed that 10b substantially induced the upregulation of 38 differentially expressed genes, which were enriched in the photosynthesis pathway. These findings suggest that 10b is a promising antiviral agrochemical that can effectively control PVY infection and trigger plant host immunity to develop virus resistance. This study provides novel molecular entities and ideas for developing new pesticides.
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Affiliation(s)
- Chunle Wei
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Xiong Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Shaojie Shi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Lian Bai
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Runjiang Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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Yan Y, Wang D, Zhang X, Peng M, Yan X, Guo Y, Jia M, Zhou J, Tang L, Hao X. Anti-TMV activity and effects of three prieurianin-type limonoids from Munronia henryi. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 184:105108. [PMID: 35715047 DOI: 10.1016/j.pestbp.2022.105108] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
Three prieurianin-type limonoids (1-3), including two new compounds (1 and 2) and one known compound (3) were isolated from Munronia henryi. These compounds were tested for their activities against tobacco mosaic virus (TMV) by the conventional half-leaf method and the outcomes were analyzed by western blotting and RT-PCR assays. The three tested compounds, at 100 μg/mL, showed strong antiviral activities in the pretreated tobacco plants with inhibition rates ranging from 70.5% to 81.3%, which were significantly higher than that of the positive control, ningnanmycin (55.6%). Their potential of inducing systemic acquired resistance (SAR) was also evaluated, in which compound 1 showed excellent induction activities. Furthermore, it was found that potentiation of defense-related enzyme activity and the contents of SA was increased. Compound 1 could also inhibit the expression of TMV CP and up-regulate the expression of defense-related genes. This work revealed that these limonoids, especially compound 1 could induce resistance in tobacco plants against the viral pathogen TMV. Meanwhile, compounds 1-3 could down-regulate the expression of NtHsp70-1 and Nthsp70-261 genes, indicating that these limonoids possibly inhibit TMV infection by suppressing NtHsp70-1 and Nthsp70-261 expression. This study is the first to report antiviral compounds with two different mechanisms of action.
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Affiliation(s)
- Ying Yan
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China; School of Medicine and Health Management, Guizhou Medical University, Guiyang 550025, China.
| | - Dan Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Xiong Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Mingyou Peng
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Xiaoyan Yan
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Yushang Guo
- Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Mengao Jia
- Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Jie Zhou
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China.
| | - Xiaojiang Hao
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China.
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Yan Y, Tang P, Zhang X, Wang D, Peng M, Yan X, Hu Z, Tang L, Hao X. Anti-TMV effects of seco-pregnane C 21 steroidal glycosides isolated from the roots of Cynanchum paniculatum. Fitoterapia 2022; 161:105225. [PMID: 35659523 DOI: 10.1016/j.fitote.2022.105225] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 05/04/2022] [Accepted: 05/18/2022] [Indexed: 11/16/2022]
Abstract
Tobacco mosaic virus (TMV) is known to infect a wide range of plants, resulting in reduced yield and productivity. Novel, effective, and plant-based pesticides are required to protect plants against TMV infection. To identify novel anti-TMV agents from natural sources, we systematically studied the roots of Cynanchum paniculatum and isolated six new seco-pregnane C21 steroidal glycosides, along with 14 known compounds. Their structures were elucidated by comprehensive spectroscopic data analysis. The anti-TMV activity of compounds were screened using the half-leaf method. Biological tests revealed that compounds 1, 2, 5, 9, 10, 15, and 16 displayed significant anti-TMV activities compared with the positive control ningnanmycin. In addition, reverse transcription-polymerase chain reaction (RT-PCR) and western blot analysis confirmed the antiviral activity of these compounds, as evident from reduced TMV coat protein (TMV-CP) gene replication and TMV-CP protein expression. These compounds downregulated the expression of NtHsp70-1 and NtHsp70-261, indicating that these steroidal glycosides possibly inhibit the TMV infection by suppressing the expression of NtHsp70-1 and NtHsp70-061 expression.
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Affiliation(s)
- Ying Yan
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China; School of Medicine and Health Management, Guizhou Medical University, Guiyang 550025, China
| | - Pan Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Xiong Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Dan Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Mingyou Peng
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Xiaoyan Yan
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China
| | - Zuquan Hu
- School of Biology and Engineering, Guizhou Medical University, Guiyang 550025, China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China.
| | - Xiaojiang Hao
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550014, China.
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Abramov A, Hoffmann T, Stark TD, Zheng L, Lenk S, Hammerl R, Lanzl T, Dawid C, Schön CC, Schwab W, Gierl A, Frey M. Engineering of benzoxazinoid biosynthesis in Arabidopsis thaliana: Metabolic and physiological challenges. PHYTOCHEMISTRY 2021; 192:112947. [PMID: 34534712 DOI: 10.1016/j.phytochem.2021.112947] [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: 06/22/2021] [Revised: 08/29/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Plant specialised metabolites constitute a layer of chemical defence. Classes of the defence compounds are often restricted to a certain taxon of plants, e.g. benzoxazinoids (BX) are characteristically detected in grasses. BXs confer wide-range defence by controlling herbivores and microbial pathogens and are allelopathic compounds. In the crops maize, wheat and rye high concentrations of BXs are synthesised at an early developmental stage. By transfer of six Bx-genes (Bx1 to Bx5 and Bx8) it was possible to establish the biosynthesis of 2,4-dihydroxy-1,4-benzoxazin-3-one glucoside (GDIBOA) in a concentration of up to 143 nmol/g dry weight in Arabidopsis thaliana. Our results indicate that inefficient channeling of substrates along the pathway and metabolisation of intermediates in host plants might be a general drawback for transgenic establishment of specialised metabolite biosynthesis pathways. As a consequence, BX levels required for defence are not obtained in Arabidopsis. We could show that indolin-2-one (ION), the first specific intermediate, is phytotoxic and is metabolised by hydroxylation and glycosylation by a wide spectrum of plants. In Arabidopsis, metabolic stress due to the enrichment of ION leads to elevated levels of salicylic acid (SA) and in addition to its intrinsic phytotoxicity, ION affects plant morphology indirectly via SA. We could show that Bx3 has a crucial role in the evolution of the pathway, first based on its impact on flux into the pathway and, second by C3-hydroxylation of the phytotoxic ION. Thereby BX3 interferes with a supposedly generic detoxification system towards the non-specific intermediate.
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Affiliation(s)
- Aleksej Abramov
- Chair of Plant Breeding, Technical University of Munich, Liesel-Beckman Str. 2, 85354, Freising, Germany
| | - Thomas Hoffmann
- Associate Professorship of Biotechnology of Natural Products, Technical University of Munich, Liesel-Beckmann Str. 1, 85354, Freising, Germany
| | - Timo D Stark
- Chair of Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner Str. 34, 85354, Freising, Germany
| | - Linlin Zheng
- Chair of Genetics, Technical University of Munich, Emil-Ramann Str. 8, 85354, Freising, Germany
| | - Stefan Lenk
- Chair of Genetics, Technical University of Munich, Emil-Ramann Str. 8, 85354, Freising, Germany
| | - Richard Hammerl
- Chair of Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner Str. 34, 85354, Freising, Germany
| | - Tobias Lanzl
- Chair of Plant Breeding, Technical University of Munich, Liesel-Beckman Str. 2, 85354, Freising, Germany
| | - Corinna Dawid
- Chair of Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner Str. 34, 85354, Freising, Germany
| | - Chris-Carolin Schön
- Chair of Plant Breeding, Technical University of Munich, Liesel-Beckman Str. 2, 85354, Freising, Germany
| | - Wilfried Schwab
- Associate Professorship of Biotechnology of Natural Products, Technical University of Munich, Liesel-Beckmann Str. 1, 85354, Freising, Germany
| | - Alfons Gierl
- Chair of Genetics, Technical University of Munich, Emil-Ramann Str. 8, 85354, Freising, Germany
| | - Monika Frey
- Chair of Plant Breeding, Technical University of Munich, Liesel-Beckman Str. 2, 85354, Freising, Germany.
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Yan C, Dong J, Liu Y, Li Y, Wang Q. Target-Directed Design, Synthesis, Antiviral Activity, and SARs of 9-Substituted Phenanthroindolizidine Alkaloid Derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7565-7571. [PMID: 34210137 DOI: 10.1021/acs.jafc.1c02276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
On the basis of our previous studies on the antiviral mechanism against tobacco mosaic virus (TMV) and structure-activity relationship of phenanthroindolizidine alkaloids, a series of 9-substituted tylophorine derivatives targeting TMV RNA were designed, synthesized, and assessed for their anti-TMV activities. The bioassay results indicated that most of these compounds showed good in vivo anti-TMV activities, and some of them displayed higher activity than that of commercial ribavirin. Especially, the anti-TMV activities of compound 3b, 4, and 6 are 2-3 times higher than that of commercial ribavirin, according to EC50 values. In this work, we have demonstrated an effective way to design new inhibitors against plant virus and developed 9-ethoxy methyl tylophorine (4) with excellent anti-TMV activity (in vitro activity, 70.2%/500 μg/mL and 27.1%/100 μg/mL; inactivation activity, 67.7%/500 μg/mL and 30.5%/100 μg/mL; curative activity, 65.3%/500 μg/mL and 30.8%/100 μg/mL; and protection activity, 65.9%/500 μg/mL and 36.0%/100 μg/mL) as a potential plant viral inhibitor.
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Affiliation(s)
- Changcun Yan
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Jianyang Dong
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Yongqiang Li
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
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Yu H, Li TN, Ran Q, Huang QW, Wang J. Strobilanthes cusia (Nees) Kuntze, a multifunctional traditional Chinese medicinal plant, and its herbal medicines: A comprehensive review. JOURNAL OF ETHNOPHARMACOLOGY 2021; 265:113325. [PMID: 32889034 DOI: 10.1016/j.jep.2020.113325] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 08/16/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Strobilanthes cusia (Nees) Kuntze (SCK, Malan), a traditional Chinese medicinal plant, has long applied to detoxification, defervescence, detumescence and antiphlogosis. "Southern Banlangen" (Rhizoma et Radix Baphicacanthis Cusiae, RRBC), root and rhizome of SCK, is widely used for treatment of many epidemic diseases. Malanye (Southern Daqingye), stem and leaf of SCK, is an antipyretic-alexipharmic drug frequently-used in southern China. Qingdai (Indigo Naturalis, IN), a processed product of SCK, is always applied to dermatoses in the folk. AIM OF THE REVIEW In order to elucidate the historical uses, recent advances and pharmaceutical prospects of SCK, we summarized roundly in aspects of history, processing method, chemical constitution, quality control, pharmacological activity and toxicity. Some deficiencies in current studies and research directions in the future are also discussed. This is the first comprehensive review of SCK and its herbal medicines, which may be of some help for further research. METHODOLOGY Comprehensive analysis was conducted on the basis of academic papers, pharmaceutical monographs, ancient medicinal works, and drug standards of China. All available information on SCK and its herbal medicines was collected by using the keywords such as "Strobilanthes cusia", "Southern Banlangen", "indirubin", "tryptanthrin" through different electronic databases including NCBI Pubmed, Google Scholar, Chinese National Knowledge Infrastructure and so on. Pharmacopoeia of China and some ancient works were obtained from National Digital Library of China. RESULT Medicinal uses of SCK were already described by famous ancient researchers. Because of vague description, plant species in some works cannot be confirmed. Literature demonstrated that multiple components including total 36 alkaloids and 35 glycosides, the main bioactive components of SCK, were found in SCK and its herbal medicines. Modern studies indicated that SCK and some of its components had multiple pharmacological effects including resistance to cancer, remission of inflammation, suppression of microorganisms, relief of dermatoses, and so on. However, studies on pharmacology, pharmacokinetics, and quality control are still not enough. CONCLUSION A number of reports suggested that SCK and its processed medicines could be promising drug candidates for multiple diseases especially promyelocytic leukemia, ulcerative colitis (UC) and psoriasis. However, bioactive activities of most components, especially glycosides should still be explored further. It is crucial to elucidate the in-depth molecular mechanisms, and pharmacokinetic characteristics of main components in those herbal medicines. Moreover, to ensure the effectiveness of clinical medication, future studies should undoubtedly give the priority to clarifying the effective compositions of SCK, and then a measurement standard of those indicators should be protocolled to establish a comprehensive quality evaluation mode.
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Affiliation(s)
- Han Yu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, China.
| | - Ting-Na Li
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, China.
| | - Qian Ran
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, China.
| | - Qin-Wan Huang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, China.
| | - Jin Wang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, China.
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Wang D, Liu B, Ma Z, Feng J, Yan H. Reticine A, a new potent natural elicitor: isolation from the fruit peel of Citrus reticulate and induction of systemic resistance against tobacco mosaic virus and other plant fungal diseases. PEST MANAGEMENT SCIENCE 2021; 77:354-364. [PMID: 32741113 DOI: 10.1002/ps.6025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 07/12/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Systemic acquired resistance (SAR) induced by elicitors is a highly satisfying form of resistance that protects plants against invading pathogens. Exploration and development of new elicitors is a promising alternative to conventional biocides in resistant pest management. In our previous broad screening, fruit peel extract of Citrus reticulata Blanco exhibited the ability to induce SAR in tobacco. RESULT A new potent elicitor reticine A was isolated from the fruit peel extract of industrial crop C. reticulate and its structure was well elucidated. In vivo assays showed that reticine A had considerable control efficacies at 100 and 500 μg mL-1 , being superior to commercial elicitor benzothiadiazole (BTH) (100 μg mL-1 ). Reticine A had no significant impact on the virulence of tobacco mosaic virus (TMV) particles under in vitro conditions. Application of reticine A induced a local hypersensitive reaction (HR), systemic accumulation of H2 O2 and salicylic acid (SA), systemic increase in defensive enzyme activities and systemic upregulated expression of pathogenesis-related (PR) proteins, suggesting its induction of SAR in tobacco. The expression of NPR1 and SA biosynthesis genes ICS and PAL were systemically upregulated. CONCLUSION SAR induced by reticine A against TMV in tobacco was demonstrated and the mechanism might be attributed to activating the expression of several defensive genes mediated by an SA signal. This study highlights the potential of reticine A which is recommended to be applied directly or as an active ingredient in the crude extract formulation ahead of time in the field, as well as being a potential lead compound for further optimization.
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Affiliation(s)
- Delong Wang
- College of Plant Protection, Engineering and Technology Centers of Biopesticide in Shaanxi, Northwest A&F University, Yangling, China
- Department of pharmaceutical engineering, College of Plant Protection, Shanxi Agricultural University, Taigu, China
| | - Bin Liu
- College of Plant Protection, Engineering and Technology Centers of Biopesticide in Shaanxi, Northwest A&F University, Yangling, China
| | - Zhiqing Ma
- College of Plant Protection, Engineering and Technology Centers of Biopesticide in Shaanxi, Northwest A&F University, Yangling, China
| | - Juntao Feng
- College of Plant Protection, Engineering and Technology Centers of Biopesticide in Shaanxi, Northwest A&F University, Yangling, China
| | - He Yan
- College of Plant Protection, Engineering and Technology Centers of Biopesticide in Shaanxi, Northwest A&F University, Yangling, China
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Zou J, Zhao L, Yi P, An Q, He L, Li Y, Lou H, Yuan C, Gu W, Huang L, Hu Z, Hao X. Quinolizidine Alkaloids with Antiviral and Insecticidal Activities from the Seeds of Sophora tonkinensis Gagnep. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:15015-15026. [PMID: 33285067 DOI: 10.1021/acs.jafc.0c06032] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The discovery of novel, effective, and botanical pesticides is one of the main strategies for modern plant protection and insect pest control. During the search for novel botanical pesticides from natural sources, the seeds of Sophora tonkinensis were systematically investigated to obtain 11 new matrine-type alkaloids (1-11), including one novel matrine-type alkaloid featuring an unprecedented 5/6/6/6 tetracyclic skeleton (1), along with 16 known compounds (12-27). Their structures were elucidated by comprehensive spectroscopic data analysis (IR, UV, NMR, and HRESIMS), ECD calculations, and single-crystal X-ray diffraction. The anti-tobacco mosaic virus (TMV) activity and insecticidal activities against Aphis fabae and Tetranychus urticae of the compounds were also respectively screened using the half-leaf method and spray method. Biological tests indicated that compounds 2, 4, 6, and 26 displayed significant anti-TMV biological activities compared with the positive control ningnanmycin. Compounds 7, 17, and 26 presented moderate activities against A. fabae with LC50 values of 38.29, 18.63, and 23.74 mg/L, respectively. Moreover, compounds 13 and 26 exhibited weak activities against T. urticae.
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Affiliation(s)
- Jibin Zou
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
- School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, PR China
| | - Lihua Zhao
- The Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650204, PR China
| | - Ping Yi
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Qiao An
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Longxiang He
- School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, PR China
| | - Yanan Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Huayong Lou
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Chunmao Yuan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Wei Gu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Liejun Huang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Zhanxing Hu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Xiaojiang Hao
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
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10
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Shen Y, Hao X. Natural product sciences: an integrative approach to the innovations of plant natural products. SCIENCE CHINA-LIFE SCIENCES 2020; 63:1634-1650. [PMID: 32955660 PMCID: PMC7504874 DOI: 10.1007/s11427-020-1799-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 08/11/2020] [Indexed: 01/24/2023]
Abstract
The study on plant natural products not only helps us understand that their structural diversity is the inevitable result of plant species diversity, but also helps us understand certain rules and unity of the inevitable connection between the two. The diversity and complexity of chemical structures of many natural products are beyond imagination before we elucidated their structures. The question that follows is what is the biological significance of these natural products. Intrigued by the relationship between plant resources, natural products and biological functions, the Hao laboratory has taken an integrative approach that employs tools and knowledge from multi-disciplines, including natural product chemistry, chemical ecology and chemical biology, to unveil the effects of plant natural products on plant resistance to diseases, and environmental acclimations. Collaborating with cell biologists, the research has resulted in discovery of new mechanisms of cellular signaling and lead compounds.
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Affiliation(s)
- Yuemao Shen
- Key Laboratory of Chemical Biology of Natural Products, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Xiaojiang Hao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
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11
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Ren X, Li X, Yin L, Jiang D, Hu D. Design, Synthesis, Antiviral Bioactivity, and Mechanism of the Ferulic Acid Ester-Containing Sulfonamide Moiety. ACS OMEGA 2020; 5:19721-19726. [PMID: 32803067 PMCID: PMC7424737 DOI: 10.1021/acsomega.0c02421] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/20/2020] [Indexed: 05/09/2023]
Abstract
Tobacco mosaic virus (TMV) has caused huge economic losses to tobacco, pepper, cucumber, and ornamental crops all over the world. However, few effective antiviral agents were developed and applied to control such plant disease. It is challenging to find an anti-TMV agent which is highly effective, less toxic, and environmentally friendly. In this work, a series of ferulic acid ester-containing sulfonamide moieties were designed and synthesized, and the antiviral activities of these compounds against TMV were evaluated. The anti-TMV biological activity test showed that the target compounds showed excellent anti-TMV activity in vitro and in vivo. In particular, compound 2 has excellent anti-TMV activity at 500 μg/mL, which is higher than that of the control drug ribavirin. The preliminary mechanism research results showed that compound 2 can obviously destroy the morphology of the virions to show excellent activity. The results show that the ferulic acid ester-containing sulfonamide moiety deserves further research and development.
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Affiliation(s)
| | | | | | | | - Deyu Hu
- . Phone: 86-851-88292170. Fax: 0086-851-88292170
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12
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Xiang S, Lv X, He L, Shi H, Liao S, Liu C, Huang Q, Li X, He X, Chen H, Wang D, Sun X. Dual-Action Pesticide Carrier That Continuously Induces Plant Resistance, Enhances Plant Anti-Tobacco Mosaic Virus Activity, and Promotes Plant Growth. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10000-10009. [PMID: 31442045 DOI: 10.1021/acs.jafc.9b03484] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Improving plant resistance against systemic diseases remains a challenging research topic. In this study, we developed a dual-action pesticide-loaded hydrogel with the capacity to significantly induce plant resistance against tobacco mosaic virus (TMV) infection and promote plant growth. We produced an alginate-lentinan-amino-oligosaccharide hydrogel (ALA-hydrogel) by coating the surface of an alginate-lentinan drug-loaded hydrogel (AL-hydrogel) with amino-oligosaccharide using electrostatic action. We determined the formation of the amino-oligosaccharide film using various approaches, including Fourier transform infrared spectrometry, the ζ potential test, scanning electron microscopy, and elemental analysis. It was found that the ALA-hydrogel exhibited stable sustained-release activity, and the release time was significantly longer than that of the AL-hydrogel. In addition, we demonstrated that the ALA-hydrogel was able to continuously and strongly induce plant resistance against TMV and increase the release of calcium ions to promote Nicotiana benthamiana growth. Meanwhile, the ALA-hydrogel maintained an extremely high safety to organisms. Our findings provide an alternative to the traditional approach of applying pesticide for controlling plant viral diseases. In the future, this hydrogel with the simple synthesis method, green synthetic materials, and its efficiency in the induction of plant resistance will attract increasing attention and have good potential to be employed in plant protection and agricultural production.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Haitao Chen
- Chongqing Tobacco Science Research Institute , Chongqing , 400715 , People's Republic of China
| | - Daibin Wang
- Chongqing Tobacco Science Research Institute , Chongqing , 400715 , People's Republic of China
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13
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Zhao L, Hu Z, Li S, Zhou X, Li J, Su X, Zhang L, Zhang Z, Dong J. Diterpenoid compounds from Wedelia trilobata induce resistance to Tomato spotted wilt virus via the JA signal pathway in tobacco plants. Sci Rep 2019; 9:2763. [PMID: 30808959 PMCID: PMC6391457 DOI: 10.1038/s41598-019-39247-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 01/08/2019] [Indexed: 01/24/2023] Open
Abstract
Tomato spotted wilt virus (TSWV) causes major losses of many crops worldwide. Several strategies have been attempted to control disease caused by TSWV. However, many challenges for the effective control of this disease remain. A promising approach is the use of abiotic or biotic inducers to enhance plant resistance to pathogens. We screened a diterpenoid compound from Wedelia trilobata, 3α-Angeloyloxy-9β-hydroxy-ent-kaur-16-en-19-oic acid (AHK), which had higher curative and protective effects against TSWV than the ningnanmycin control. The rapid initiation of the expression of all the TSWV genes was delayed by more than 1d in the curative assay, and the expression of the NSs, NSm and RdRp genes was inhibited. In addition, the replication of all TSWV genes in systemic leaves was inhibited in the protective assay, with an inhibition rate of more than 90%. The concentrations of jasmonic acid (JA) and jasmonic acid isoleucine (JA-ILE) in the AHK-treated and systemic leaves of the treated plants were significantly higher than those observed in the control. The results suggested that AHK can induce systemic resistance in treated plants. The transcription of the NtCOI1 gene, a key gene in the JA pathway, was significantly higher in both the inoculated and systemic leaves of the AHK-treated plants compared to the control. The AHK-induced resistance to TSWV in Nicotiana benthamiana could be eliminated by VIGS-mediated silencing of the NtCOI1 gene. These results indicated that AHK can activate the JA pathway and induce systemic resistance to TSWV infection.
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Affiliation(s)
- Lihua Zhao
- Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, 650204, Kunming, China
| | - Zhonghui Hu
- Kunming Institute of Botany, Chinese Academy of Science, 650201, Kunming, China
| | - Shunlin Li
- Kunming Institute of Botany, Chinese Academy of Science, 650201, Kunming, China
| | - Xueping Zhou
- Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, 650204, Kunming, China
- Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Jing Li
- Life Science College, Southwest Forestry University, 650224, Kunming, China
| | - Xiaoxia Su
- Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, 650204, Kunming, China
| | - Lizhen Zhang
- Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, 650204, Kunming, China
| | - Zhongkai Zhang
- Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, 650204, Kunming, China.
| | - Jiahong Dong
- Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Laboratory of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, 650204, Kunming, China.
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14
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Shen YM, Chen DZ. An Explorer of Chemical Biology of Plant Natural Products in Southwest China, Xiaojiang Hao. NATURAL PRODUCTS AND BIOPROSPECTING 2018; 8:217-226. [PMID: 30032475 PMCID: PMC6102171 DOI: 10.1007/s13659-018-0184-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 07/09/2018] [Indexed: 05/02/2023]
Abstract
Xiaojiang Hao, who obtained Master Degree from Kunming Institute of Botany (KIB), Chinese Academy of Sciences (CAS) in 1985, and Doctor in Pharmacy degree in Pharmacy from Institute for Chemical Research, Kyoto University, in 1990, was born in Chongqing in July, 1951. In 1991, he returned to KIB, CAS, as an Associate professor and served as the chair of the Department of Phytochemistry. In 1994, he was promoted to a full professor at the current institute. He served as the Deputy Director of KIB and the Director of Open Laboratory of Phytochemistry from 1995 to 1997, and the Director of KIB from 1997 to 2005. Professor Hao has published more than 450 peer-reviewed SCI papers, which have been cited over 6000 times. He has obtained one PCT patent and 23 patents in China. Due to his tremendous efforts, one candidate drug, phenchlobenpyrrone, has entered the Phase II clinical trail for the treatment of Alzheimer's disease. Moreover, he won the First Prize of Natural Sciences in Yunnan Province for three times, and Ho Leung Ho Lee Fund Science and Technology Innovation Award in 2017.
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Affiliation(s)
- Yue-Mao Shen
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, People's Republic of China.
- State Key Laboratory of Functions and Applications of Medicinal Plants, Academic City, No. 3491 Platina Way, Hi-tech Zone, Guiyang, Guizhou, 550014, People's Republic of China.
| | - Duo-Zhi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
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Yang DQ, Chen ZR, Chen DZ, Hao XJ, Li SL. Anti-TMV Effects of Amaryllidaceae Alkaloids Isolated from the Bulbs of Lycoris radiata and Lycoricidine Derivatives. NATURAL PRODUCTS AND BIOPROSPECTING 2018; 8:189-197. [PMID: 29777503 PMCID: PMC5971033 DOI: 10.1007/s13659-018-0163-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/11/2018] [Indexed: 05/15/2023]
Abstract
Fifteen known amaryllidaceae alkaloids were isolated from the bulbs of Lycoris radiata. Some of the compounds and lycoricidine derivatives had been screened for the activities against tobacco mosaic virus (TMV) by the conventional half-leaf method. Lycoricidine derivatives were also carried out the assay of effect on systemic infection of TMV by western-blot and RT-PCR analysis. The tested compounds showed moderate inactivation effect, whereas the lycoricidine derivatives showed good protective effect. The protective inhibitory activity of compounds L1 (N-methyl-2,3,4-trimethoxylycoricidine) (60.8%) and L3 (N-methyl-2-methoxy-3,4-acetonidelycoricidine) (62.0%) was almost similar to the positive control, Ningnanmycin (66.4%). RT-PCR and Western-blot analysis displayed that compounds L1, L3, L5 (N-allyl-2,3,4-triallyloxylycoricidine) exhibited antiviral activity, which was evidenced by reducing TMV-CP gene replication and TMV-CP protein expression. Additionally, defensive enzyme activities confirmed that compound L1 could increase the activity of PAL, POD, SOD to improve disease resistance of tobacco.
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Affiliation(s)
- Dong-Qiong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Zhao-Rong Chen
- Tianjin Agricultural University, Tianjin, 300380, People's Republic of China
| | - Duo-Zhi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Xiao-Jiang Hao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Shun-Lin Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China.
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16
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Chen J, Shi J, Yu L, Liu D, Gan X, Song B, Hu D. Design, Synthesis, Antiviral Bioactivity, and Defense Mechanisms of Novel Dithioacetal Derivatives Bearing a Strobilurin Moiety. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:5335-5345. [PMID: 29741370 DOI: 10.1021/acs.jafc.8b01297] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A series of dithioacetal derivatives bearing a strobilurin moiety were designed and synthesized on the basis of our previous work. The antiviral activities of these compounds against Potato virus Y (PVY), Cucumber mosaic virus (CMV), and Tobacco mosaic virus (TMV) were systematically evaluated. Bioassay results indicated that C14 elicited excellent curative and protective activities against PVY, CMV, and TMV. The former had 50% effective concentrations (EC50) of 125.3, 108.9, and 181.7 μg/mL, respectively, and the latter had 148.4, 113.2, and 214.6 μg/mL, respectively, which were significantly superior to those of lead compound 6f (297.6, 259.6, and 582.4 μg/mL and 281.5, 244.3, and 546.3 μg/mL, respectively), Ningnanmycin (440.5, 549.1, and 373.8 μg/mL and 425.3, 513.3, and 242.7 μg/mL, respectively), Chitosan oligosaccharide (553.4, 582.8, and 513.8 μg/mL and 547.3, 570.6, and 507.9 μg/mL, respectively), and Ribavirin (677.4, 690.3, and 686.5 μg/mL and 652.7, 665.4, and 653.4 μg/mL, respectively). Moreover, defensive enzyme activities and RT-qPCR analysis demonstrated that the antiviral activity was associated with the changes of SOD, CAT, and POD activities in tobacco, which was proved by the related proteins of abscisic acid signaling pathway. This work provided a basis for further design, structural modification, and development of dithioacetal derivatives as new antiviral agents.
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Affiliation(s)
- Jin Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District, Guiyang 550025 , China
| | - Jing Shi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District, Guiyang 550025 , China
| | - Lu Yu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District, Guiyang 550025 , China
| | - Dengyue Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District, Guiyang 550025 , China
| | - Xiuhai Gan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District, Guiyang 550025 , China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District, Guiyang 550025 , China
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District, Guiyang 550025 , China
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17
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Yan Y, Tang L, Hu J, Wang J, Adelakun TA, Yang D, Di Y, Zhang Y, Hao X. Munronin O, a potential activator for plant resistance. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 146:13-18. [PMID: 29626987 DOI: 10.1016/j.pestbp.2018.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/01/2018] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
A series of limonoids (1-8) were isolated from the whole plant of Munronia henryi and antiviral activities of the compounds were evaluated. The bioassay results demonstrated that Munronin O (1) showed remarkable protective activity and compounds 7 and 8 showed significant inactivating, protective, and curative activities against tobacco mosaic virus (TMV). With a 50% effective concentration (EC50) value of 91.5 μg/mL, compound 1 exhibited the best protective activity compared with ningnanmycin (192.3 μg/mL). The potential for these compound of inducing systemic acquired resistance (SAR) was also evaluated, and compound 1 showed excellent induction activities. Furthermore, it was found that potentiation of defense-related enzyme activity and the contents of SA was increased. Compound 1 could also inhibit the expression of TMV CP and up-regulate the expression of defense-related genes. This work revealed that compound 1 can induce resistance and enhance plant tolerance to TMV infection. Hence, compound 1 can be considered as a potential activator for inducing plant resistance.
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Affiliation(s)
- Ying Yan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, People's Republic of China; Guizhou Chemical Drug Research and Development Engineering Technical Center, Guiyang 550004, People's Republic of China
| | - Lei Tang
- Guizhou Chemical Drug Research and Development Engineering Technical Center, Guiyang 550004, People's Republic of China
| | - Jiaqi Hu
- Guizhou Chemical Drug Research and Development Engineering Technical Center, Guiyang 550004, People's Republic of China
| | - Jianta Wang
- Guizhou Chemical Drug Research and Development Engineering Technical Center, Guiyang 550004, People's Republic of China
| | - Tiwalade Adegoke Adelakun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, People's Republic of China
| | - Dongqiong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, People's Republic of China
| | - Yingtong Di
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, People's Republic of China
| | - Yu Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, People's Republic of China
| | - Xiaojiang Hao
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, People's Republic of China.
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18
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Kamatham S, Pallu R, Pasupulati AK, Singh SS, Gudipalli P. Benzoylsalicylic acid derivatives as defense activators in tobacco and Arabidopsis. PHYTOCHEMISTRY 2017; 143:160-169. [PMID: 28818753 DOI: 10.1016/j.phytochem.2017.07.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 07/25/2017] [Accepted: 07/28/2017] [Indexed: 06/07/2023]
Abstract
Systemic acquired resistance (SAR) is a long lasting inducible whole plant immunity often induced by either pathogens or chemical elicitors. Salicylic acid (SA) is a known SAR signal against a broad spectrum of pathogens in plants. In a recent study, we have reported that benzoylsalicylic acid (BzSA) is a SAR inducer in tobacco and Arabidopsis plants. Here, we have synthesized BzSA derivatives using SA and benzoyl chlorides of various moieties as substrates. The chemical structures of BzSA derivatives were elucidated using Infrared spectroscopy (IR), Nuclear magnetic spectroscopy (NMR) and High-resolution mass spectrometer (HRMS) analysis. The bioefficacy of BzSA derivatives in inducing defense response against tobacco mosaic virus (TMV) was investigated in tobacco and SA abolished transgenic NahG Arabidopsis plants. Interestingly, pre-treatment of local leaves of tobacco with BzSA derivatives enhanced the expression of SAR genes such as NPR1 [Non-expressor of pathogenesis-related (PR) genes 1], PR and other defense marker genes (HSR203, SIPK, WIPK) in systemic leaves. Pre-treatment of BzSA derivatives reduced the spread of TMV infection to uninfected areas by restricting lesion number and diameter both in local and systemic leaves of tobacco in a dose-dependent manner. Furthermore, pre-treatment of BzSA derivatives in local leaves of SA deficient Arabidopsis NahG plants induced SAR through AtPR1 and AtPR5 gene expression and reduced leaf necrosis and curling symptoms in systemic leaves as compared to BzSA. These results suggest that BzSA derivatives are potent SAR inducers against TMV in tobacco and Arabidopsis.
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Affiliation(s)
- Samuel Kamatham
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India
| | - Reddanna Pallu
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India
| | - Anil Kumar Pasupulati
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India
| | | | - Padmaja Gudipalli
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India.
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19
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Chen Y, Dong J, Bennetzen JL, Zhong M, Yang J, Zhang J, Li S, Hao X, Zhang Z, Wang X. Integrating transcriptome and microRNA analysis identifies genes and microRNAs for AHO-induced systemic acquired resistance in N. tabacum. Sci Rep 2017; 7:12504. [PMID: 28970509 PMCID: PMC5624873 DOI: 10.1038/s41598-017-12249-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 09/04/2017] [Indexed: 11/09/2022] Open
Abstract
3-Acetonyl-3-hydroxyoxindole (AHO) induces systemic acquired resistance (SAR) in Nicotiana. However, the underlying molecular mechanism is not well understood. To understand the molecular regulation during SAR induction, we examined mRNA levels, microRNA (miRNA) expression, and their regulatory mechanisms in control and AHO-treated tobacco leaves. Using RNA-seq analysis, we identified 1,445 significantly differentially expressed genes (DEGs) at least 2 folds with AHO treatment. The DEGs significantly enriched in six metabolism pathways including phenylpropanoid biosynthesis, sesquiterpenoid and triterpenoid biosynthesis for protective cuticle and wax. Key DEGs including PALs and PR-10 in salicylic acid pathway involved in SAR were significantly regulated. In addition, we identified 403 miRNAs belonging to 200 miRNA families by miRNA sequencing. In total, AHO treatment led to 17 up- and 6 down-regulated at least 2 folds (Wald test, P < 0.05) miRNAs (DEMs), respectively. Targeting analysis implicated four DEMs regulating three DEGs involved in disease resistance, including miR156, miR172f, miR172g, miR408a, SPL6 and AP2. We concluded that both mRNA and miRNA regulation enhances AHO-induced SAR. These data regarding DEGs, miRNAs, and their regulatory mechanisms provide molecular evidence for the mechanisms involved in tobacco SAR, which are likely to be present in other plants.
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Affiliation(s)
- Yongdui Chen
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Laboratory of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, Kunming, 650223, P. R. China
| | - Jiahong Dong
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Laboratory of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, Kunming, 650223, P. R. China
| | - Jeffrey L Bennetzen
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, P. R. China
- Department of Genetics, University of Georgia, Athens, USA
| | - Micai Zhong
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, P. R. China
| | - Jun Yang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, P. R. China
| | - Jie Zhang
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Laboratory of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, Kunming, 650223, P. R. China
| | - Shunlin Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, P. R. China
| | - Xiaojiang Hao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, P. R. China
| | - Zhongkai Zhang
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Yunnan Provincial Key Laboratory of Agricultural Biotechnology; Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation, Ministry of Agriculture, Kunming, 650223, P. R. China.
| | - Xuewen Wang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, P. R. China.
- Department of Genetics, University of Georgia, Athens, USA.
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Zhang J, Zhao L, Zhu C, Wu Z, Zhang G, Gan X, Liu D, Pan J, Hu D, Song B. Facile Synthesis of Novel Vanillin Derivatives Incorporating a Bis(2-hydroxyethyl)dithhioacetal Moiety as Antiviral Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4582-4588. [PMID: 28545296 DOI: 10.1021/acs.jafc.7b01035] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A series of vanillin derivatives incorporating a bis(2-hydroxyethyl)dithioacetal moiety was designed and synthesized via a facile method. A plausible reaction pathway was proposed and verified by computational studies. Bioassay results demonstrated that target compounds possessed good to excellent activities against potato virus Y (PVY) and cucumber mosaic virus (CMV), of which, compound 6f incorporating a bis(2-hydroxyethyl)dithioacetal moiety, exhibited the best curative and protection activities against PVY and CMV in vivo, with 50% effective concentration values of 217.6, 205.7 μg/mL and 206.3, 186.2 μg/mL, respectively, better than those of ribavirin (848.0, 808.1 μg/mL and 858.2, 766.5 μg/mL, respectively), dufulin (462.6, 454.8 μg/mL and 471.2, 465.4 μg/mL, respectively), and ningnanmycin (440.5, 425.3 μg/mL and 426.1, 405.3 μg/mL, respectively). Current studies provide support for the application of vanillin derivatives incorporating bis(2-hydroxyethyl)dithioacetal as new antiviral agents.
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Affiliation(s)
- Jian Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Lei Zhao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Chun Zhu
- School of Chemistry and Chemical Engineering, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Zengxue Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Guoping Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Xiuhai Gan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Dengyue Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Jianke Pan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Huaxi District, Guiyang 550025, China
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Synthesis and Antiviral Activity of Novel 1,4-Pentadien-3-one Derivatives Containing a 1,3,4-Thiadiazole Moiety. Molecules 2017; 22:molecules22040658. [PMID: 28430149 PMCID: PMC6154619 DOI: 10.3390/molecules22040658] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 04/15/2017] [Accepted: 04/18/2017] [Indexed: 12/23/2022] Open
Abstract
1,4-Pentadien-3-one derivatives derived from curcumin possess excellent inhibitory activity against plant viruses. On the basis of this finding, a series of novel 1,4-pentadien-3-one derivatives containing a 1,3,4-thiadiazole moiety were designed and synthesized, and their structures confirmed by IR, 1H-NMR, and 13C-NMR spectroscopy and elemental analysis. The antiviral activities of the title compounds were evaluated against tobacco mosaic virus (TMV) and cucumber mosaic virus (CMV) in vivo. The assay results showed that most of compounds had remarkable antiviral activities against TMV and CMV, among which compounds 4b, 4h, 4i, 4k, 4o, and 4q exhibited good curative, protection, and inactivation activity against TMV. Compounds 4h, 4i, 4k, 4l, 4o, and 4q exhibited excellent protection activity against TMV, with EC50 values of 105.01, 254.77, 135.38, 297.40, 248.18, and 129.87 μg/mL, respectively, which were superior to that of ribavirin (457.25 µg/mL). In addition, preliminary SARs indicated that small electron-withdrawing groups on the aromatic ring were favorable for anti-TMV activity. This finding suggests that 1,4-pentadien-3-one derivatives containing a 1,3,4-thiadiazole moiety may be considered as potential lead structures for discovering new antiviral agents.
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Ji X, Wang Z, Dong J, Liu Y, Lu A, Wang Q. Discovery of Topsentin Alkaloids and Their Derivatives as Novel Antiviral and Anti-phytopathogenic Fungus Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:9143-9151. [PMID: 27933985 DOI: 10.1021/acs.jafc.6b04020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Topsentin alkaloids and their derivatives were designed, synthesized, and characterized on the basis of NMR and mass spectroscopy. The antiviral activities against tobacco mosaic virus (TMV) and anti-phytopathogenic fungus activities of these alkaloids were evaluated for the first time. Alkaloids 1c, 1e, 2b, and 2d displayed significantly higher antiviral activities against TMV than Ribavirin, emerging as new lead compounds for anti-TMV research. Further fungicidal activity tests against 14 kinds of phytopathogenic fungi revealed that these alkaloids displayed broad-spectrum fungicidal activities. Topsentin derivative 2d with 4-5 mg/kg EC50 values against Sclerotinia sclerotiorum (Lib.), Rhizoctonia solani (Kuhn), and Botrytis cinerea (Pers.) emerged as a new lead compound for fungicidal research. Current studies provide support for the application of topsentin alkaloids as novel agrochemicals.
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Affiliation(s)
- Xiaofei Ji
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Materials Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry, Tianjin Normal University , Tianjin 300387, China
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Ziwen Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Materials Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry, Tianjin Normal University , Tianjin 300387, China
| | - Ji Dong
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Aidang Lu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
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Xie B, Li T, Lin X, Wang CJ, Chen YJ, Liu WJ, Zhao ZW. Lysobacter erysipheiresistens sp. nov., an antagonist of powdery mildew, isolated from tobacco-cultivated soil. Int J Syst Evol Microbiol 2016; 66:4016-4021. [PMID: 27411921 DOI: 10.1099/ijsem.0.001303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
A bacterial strain, RS-LYSO-3T, was isolated from tobacco-cultivated soil, collected near Chuxiong, Yunnan province, southwestern China. RS-LYSO-3T could effectively inhibit the invasion of powdery mildew on tobacco. The colonies of RS-LYSO-3T were pale yellow, and its cells were Gram-stain-negative and rod-shaped, with 68 mol% DNA G+C content. Gene sequence analysis for its 16S rRNA gene revealed the highest similarity (97.78 %) with that of Lysobacter spongiicolaKMM 329T. Chemotaxonomic data showed that RS-LYSO-3T possesses a quinone system with Q-8, and iso-C16 : 0, summed feature 9 and iso-C15 : 0 as the predominant fatty acids, all of which support the affiliation of RS-LYSO-3T to the genus Lysobacter. The results of DNA-DNA hybridization, physiological and biochemical tests clearly proved that RS-LYSO-3T is a representative of a novel species of the genus Lysobacter, for which the name Lysobacter erysipheresistens sp. nov. is proposed. The type strain is RS-LYSO-3T (=CCIC 23922T=JCM 31042T).
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Affiliation(s)
- Bing Xie
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091 Yunnan, PR China
- Yunnan Reascend Tobacco Technology (Group) Co., Ltd., No. 1699 Haiyuanbei Road, Kunming National Hi-technology Industry Development Zone, 650106 Yunnan, PR China
| | - Tao Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091 Yunnan, PR China
| | - Xin Lin
- Yunnan Reascend Tobacco Technology (Group) Co., Ltd., No. 1699 Haiyuanbei Road, Kunming National Hi-technology Industry Development Zone, 650106 Yunnan, PR China
| | - Chao-Jun Wang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091 Yunnan, PR China
| | - Yun-Jiao Chen
- Yunnan Reascend Tobacco Technology (Group) Co., Ltd., No. 1699 Haiyuanbei Road, Kunming National Hi-technology Industry Development Zone, 650106 Yunnan, PR China
| | - Wei-Juan Liu
- Yunnan Reascend Tobacco Technology (Group) Co., Ltd., No. 1699 Haiyuanbei Road, Kunming National Hi-technology Industry Development Zone, 650106 Yunnan, PR China
| | - Zhi-Wei Zhao
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091 Yunnan, PR China
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Chen L, Liu Y, Song H, Liu Y, Wang L, Wang Q. Expanding indole diversity: direct 1-step synthesis of 1,2-fused indoles and spiroindolines from 2-halo anilines for fast SAR antiviral elucidation against tobacco mosaic virus (TMV). Mol Divers 2016; 21:61-68. [DOI: 10.1007/s11030-016-9697-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 08/22/2016] [Indexed: 11/24/2022]
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Kamatham S, Neela KB, Pasupulati AK, Pallu R, Singh SS, Gudipalli P. Benzoylsalicylic acid isolated from seed coats of Givotia rottleriformis induces systemic acquired resistance in tobacco and Arabidopsis. PHYTOCHEMISTRY 2016; 126:11-22. [PMID: 26988727 DOI: 10.1016/j.phytochem.2016.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 03/02/2016] [Accepted: 03/07/2016] [Indexed: 06/05/2023]
Abstract
Systemic acquired resistance (SAR), a whole plant defense response to a broad spectrum of pathogens, is characterized by a coordinated expression of a large number of defense genes. Plants synthesize a variety of secondary metabolites to protect themselves from the invading microbial pathogens. Several studies have shown that salicylic acid (SA) is a key endogenous component of local and systemic disease resistance in plants. Although SA is a critical signal for SAR, accumulation of endogenous SA levels alone is insufficient to establish SAR. Here, we have identified a new acyl derivative of SA, the benzoylsalicylic acid (BzSA) also known as 2-(benzoyloxy) benzoic acid from the seed coats of Givotia rottleriformis and investigated its role in inducing SAR in tobacco and Arabidopsis. Interestingly, exogenous BzSA treatment induced the expression of NPR1 (Non-expressor of pathogenesis-related gene-1) and pathogenesis related (PR) genes. BzSA enhanced the expression of hypersensitivity related (HSR), mitogen activated protein kinase (MAPK) and WRKY genes in tobacco. Moreover, Arabidopsis NahG plants that were treated with BzSA showed enhanced resistance to tobacco mosaic virus (TMV) as evidenced by reduced leaf necrosis and TMV-coat protein levels in systemic leaves. We, therefore, conclude that BzSA, hitherto unknown natural plant product, is a new SAR inducer in plants.
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Affiliation(s)
- Samuel Kamatham
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telangana, India; Department of Biochemistry, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telangana, India
| | - Kishore Babu Neela
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telangana, India
| | - Anil Kumar Pasupulati
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telangana, India
| | - Reddanna Pallu
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telangana, India
| | | | - Padmaja Gudipalli
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telangana, India.
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Stahl E, Bellwon P, Huber S, Schlaeppi K, Bernsdorff F, Vallat-Michel A, Mauch F, Zeier J. Regulatory and Functional Aspects of Indolic Metabolism in Plant Systemic Acquired Resistance. MOLECULAR PLANT 2016; 9:662-681. [PMID: 26802249 DOI: 10.1016/j.molp.2016.01.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 12/08/2015] [Accepted: 01/01/2016] [Indexed: 05/27/2023]
Abstract
Tryptophan-derived, indolic metabolites possess diverse functions in Arabidopsis innate immunity to microbial pathogen infection. Here, we investigate the functional role and regulatory characteristics of indolic metabolism in Arabidopsis systemic acquired resistance (SAR) triggered by the bacterial pathogen Pseudomonas syringae. Indolic metabolism is broadly activated in both P. syringae-inoculated and distant, non-inoculated leaves. At inoculation sites, camalexin, indol-3-ylmethylamine (I3A), and indole-3-carboxylic acid (ICA) are the major accumulating compounds. Camalexin accumulation is positively affected by MYB122, and the cytochrome P450 genes CYP81F1 and CYP81F2. Local I3A production, by contrast, occurs via indole glucosinolate breakdown by PEN2- dependent and independent pathways. Moreover, exogenous application of the defense hormone salicylic acid stimulates I3A generation at the expense of its precursor indol-3-ylmethylglucosinolate (I3M), and the SAR regulator pipecolic acid primes plants for enhanced P. syringae-induced activation of distinct branches of indolic metabolism. In uninfected systemic tissue, the metabolic response is more specific and associated with enhanced levels of the indolics I3A, ICA, and indole-3-carbaldehyde (ICC). Systemic indole accumulation fully depends on functional CYP79B2/3, PEN2, and MYB34/51/122, and requires functional SAR signaling. Genetic analyses suggest that systemically elevated indoles are dispensable for SAR and associated systemic increases of salicylic acid. However, soil-grown but not hydroponically -cultivated cyp79b2/3 and pen2 plants, both defective in indolic secondary metabolism, exhibit pre-induced immunity, which abrogates their intrinsic ability to induce SAR.
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Affiliation(s)
- Elia Stahl
- Department of Biology, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany; Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Patricia Bellwon
- Plant Biology Section, University of Fribourg, Route Albert Gockel 3, 1700 Fribourg, Switzerland
| | - Stefan Huber
- Department of Biology, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Klaus Schlaeppi
- Plant Biology Section, University of Fribourg, Route Albert Gockel 3, 1700 Fribourg, Switzerland
| | - Friederike Bernsdorff
- Department of Biology, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Armelle Vallat-Michel
- Institut de Chimie, Université de Neuchâtel, Avenue Bellevaux 51, 2007 Neuchâtel, Switzerland
| | - Felix Mauch
- Plant Biology Section, University of Fribourg, Route Albert Gockel 3, 1700 Fribourg, Switzerland
| | - Jürgen Zeier
- Department of Biology, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany; Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany.
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Su B, Cai C, Deng M, Wang Q. Spatial Configuration and Three-Dimensional Conformation Directed Design, Synthesis, Antiviral Activity, and Structure-Activity Relationships of Phenanthroindolizidine Analogues. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:2039-45. [PMID: 26923726 DOI: 10.1021/acs.jafc.5b06112] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Our recent investigation on the antiviral activities against tobacco mosaic virus (TMV) of phenanthroindolizidine alkaloid analogues preliminarily revealed that the basic skeleton and substitution pattern at the C13a position of the molecule, which are closely related to the spatial arrangement of the molecule, have great effects on the biological activity. To further study the in-depth influence of spatial configuration and three-dimensional (3D) conformation of the molecules on their anti-TMV activities and related structure-activity relationship (SAR), a series of D-ring opened derivatives 3, 4, 5a-5j, 6, and 7, chiral 13a- and/or 14-substituted phenanthroindolizidine analogues 10-12 and 18-20, and their enantiomers ent-10-ent-12 and ent-18-ent-20 were synthesized and evaluated for their anti-TMV activities. Bioassay results showed that most of the chiral phenanthroindolizidines displayed good to excellent in vivo anti-TMV activity. Among these compounds, ent-11 showed more potent activity than Ningnanmycin (one of the most successful commercial antiviral agents), thus emerging as a potential inhibitor of the plant virus. Further SARs were also discussed for the first time under the chiral scenario, demonstrating that both spatial configuration and 3D conformation of the molecules are crucial for keeping high anti-TMV activity.
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Affiliation(s)
- Bo Su
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, People's Republic of China
| | - Chunlong Cai
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, People's Republic of China
| | - Meng Deng
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, People's Republic of China
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Yan Y, Yuan CM, Di YT, Huang T, Fan YM, Ma Y, Zhang JX, Hao XJ. Limonoids from Munronia henryi and their anti-tobacco mosaic virus activity. Fitoterapia 2015; 107:29-35. [DOI: 10.1016/j.fitote.2015.09.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/13/2015] [Accepted: 09/15/2015] [Indexed: 11/30/2022]
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29
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Ma Y, Mao XY, Huang LJ, Fan YM, Gu W, Yan C, Huang T, Zhang JX, Yuan CM, Hao XJ. Diterpene alkaloids and diterpenes from Spiraea japonica and their anti-tobacco mosaic virus activity. Fitoterapia 2015; 109:8-13. [PMID: 26625838 DOI: 10.1016/j.fitote.2015.11.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 11/21/2015] [Accepted: 11/23/2015] [Indexed: 01/16/2023]
Abstract
Five new naturally occurring natural products, including two atisine-type diterpene alkaloids (1 and 2), two atisane-type diterpenes (3 and 4), and a new natural product spiramine C2 (5), along with nine known ones (6-14), were isolated from the ethanolic extracts of the whole plant of Spiraea japonica var. acuminata Franch. Their structures were elucidated by extensive spectroscopic analysis. The anti-tobacco mosaic virus (TMV) activities of all the compounds were evaluated by the conventional half-leaf method. Six compounds (2, 3, 6, 7, 11, and 12) exhibited moderate activities at 100 μg/mL with inhibition rates in the range of 69.4-92.9%, which were higher than that of the positive control, ningnanmycin. Their preliminary structure-activity relationships were also discussed.
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Affiliation(s)
- Yuan Ma
- School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, People's Republic of China; The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Xin-Ying Mao
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Lie-Jun Huang
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Yi-Min Fan
- School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, People's Republic of China; The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Wei Gu
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Chen Yan
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Tao Huang
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Jian-Xin Zhang
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
| | - Chun-Mao Yuan
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China.
| | - Xiao-Jiang Hao
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China.
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Wu W, Chen Q, Tai A, Jiang G, Ouyang G. Synthesis and antiviral activity of 2-substituted methylthio-5-(4-amino-2-methylpyrimidin-5-yl)-1,3,4-oxadiazole derivatives. Bioorg Med Chem Lett 2015; 25:2243-6. [DOI: 10.1016/j.bmcl.2015.02.069] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/13/2015] [Accepted: 02/27/2015] [Indexed: 11/16/2022]
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Anti-TMV activity of malformin A1, a cyclic penta-peptide produced by an endophytic fungus Aspergillus tubingensis FJBJ11. Int J Mol Sci 2015; 16:5750-61. [PMID: 25775156 PMCID: PMC4394503 DOI: 10.3390/ijms16035750] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/03/2015] [Accepted: 03/07/2015] [Indexed: 11/17/2022] Open
Abstract
Plant-associated microorganisms are known to produce a variety of metabolites with novel structures and interesting biological activities. An endophytic fungus FJBJ11, isolated from the plant tissue of Brucea javanica (L.) Merr. (Simaroubaceae), was proven to be significantly effective in producing metabolites with anti-Tobacco mosaic virus (TMV) activities. The isolate was identified as Aspergillus tubingensis FJBJ11 based on morphological characteristics and ITS sequence. Bioassay-guided isolation led to the identification of a cycli penta-peptide, malformin A1, along with two cyclic dipeptides, cyclo (Gly-l-Pro) and cyclo (Ala-Leu). Malformin A1 showed potent inhibitory effect against the infection and replication of TMV with IC50 values of 19.7 and 45.4 μg·mL−1, as tested using local lesion assay and leaf-disc method, respectively. The results indicated the potential use of malformin A1 as a leading compound or a promising candidate of new viricide.
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Zhu Y, Zhang H, Wang D, Li L, Xu H, Li H, Ma Y. Design, Synthesis and Biological Evaluation of Novel N-(4-([2,2′:5′,2′′-Terthiophen]-5-yl)-2-methylbut-3-yn-2-yl) Benzamide Derivatives. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201400654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Li L, Li Z, Wang K, Zhao S, Feng J, Li J, Yang P, Liu Y, Wang L, Li Y, Shang H, Wang Q. Design, synthesis, and biological activities of aromatic gossypol Schiff base derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11080-8. [PMID: 25386768 DOI: 10.1021/jf504411g] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A series of aromatic gossypol Schiff bases have been successfully synthesized via a feasible chemical modification. The antiviral activity against tobacco mosaic virus (TMV) of these gossypol Schiff bases has been tested for the first time. The bioassay studies indicated most of these derivatives exhibited excellent anti-TMV activity, in which o-trifluoromethylaniline Schiff base (19) displayed the best antiviral activities. Furthermore, compound 19 exhibited an eminent anti-TMV effect in the field and low toxicity to mice. These results suggest it is a promising candidate for the inhibitor of plant virus.
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Affiliation(s)
- Ling Li
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, People's Republic of China
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Yan Y, Zhang JX, Liu KX, Huang T, Yan C, Huang LJ, Liu S, Mu SZ, Hao XJ. Seco-pregnane steroidal glycosides from the roots of Cynanchum atratum and their anti-TMV activity. Fitoterapia 2014; 97:50-63. [PMID: 24709074 DOI: 10.1016/j.fitote.2014.03.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/27/2014] [Accepted: 03/28/2014] [Indexed: 11/17/2022]
Abstract
Fifteen new seco-pregnane steroidal glycosides cynanosides A-O (1-15) together with twenty-seven known ones were isolated from the roots of Cynanchum atratum. The structures of 1-15 were determined by extensive analysis of spectroscopic data. The anti-tobacco mosaic virus (TMV) activity of these steroidal glycosides was screened by the conventional half-leaf method, enzyme-linked immunosorbent assay, and Western blot methods, most of them showed potent anti-TMV activity. Among them, compounds 1, 7, 13, 28 and 31 showed significantly anti-TMV activity with an IC50 value of 20.5, 18.6, 22.0, 19.2 and 22.2 μg/mL, respectively, and were much more effective than the positive control, ningnanmycin (IC50=49.6 μg/mL).
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Affiliation(s)
- Ying Yan
- Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, People's Republic of China; The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Jian-xin Zhang
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Kai-xing Liu
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Tao Huang
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Chen Yan
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Lie-jun Huang
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Sheng Liu
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Shu-zhen Mu
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China
| | - Xiao-jiang Hao
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, People's Republic of China.
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Field evaluation of the bacterial volatile derivative 3-pentanol in priming for induced resistance in pepper. J Chem Ecol 2014; 40:882-92. [PMID: 25149655 DOI: 10.1007/s10886-014-0488-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 06/30/2014] [Accepted: 08/12/2014] [Indexed: 10/24/2022]
Abstract
Plants are defended from attack by emission of volatile organic compounds (VOCs) that can act directly against pathogens and herbivores or indirectly by recruiting natural enemies of herbivores. However, microbial VOC have been less investigated as potential triggers of plant systemic defense responses against pathogens in the field. Bacillus amyloliquefaciens strain IN937a, a plant growth-promoting rhizobacterium that colonizes plant tissues, stimulates induced systemic resistance (ISR) via its emission of VOCs. We investigated the ISR capacity of VOCs and derivatives collected from strain IN937a against bacterial spot disease caused by Xanthomonas axonopodis pv. vesicatoria in pepper. Of 15 bacterial VOCs and their derivatives, 3-pentanol, which is a C8 amyl alcohol reported to be a component of sex pheromones in insects, was selected for further investigation. Pathogens were infiltrated into pepper leaves 10, 20, 30, and 40 days after treatment and transplantation to the field. Disease severity was assessed 7 days after transplantation. Treatment with 3-pentanol significantly reduced disease severity caused by X. axonopodis and naturally occurring Cucumber mosaic virus in field trials over 2 years. We used quantitative real-time polymerase chain analysis to examine Pathogenesis-Related genes associated with salicylic acid (SA), jasmonic acid (JA), and ethylene defense signaling. The expression of Capsicum annuum Pathogenesis-Related protein 1 (CaPR1), CaPR2, and Ca protease inhibitor2 (CaPIN2) increased in field-grown pepper plants treated with 3-pentanol. Taken together, our results show that 3-pentanol triggers induced resistance by priming SA and JA signaling in pepper under field conditions.
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Su B, Cai C, Deng M, Liang D, Wang L, Wang Q. Design, synthesis, antiviral activity, and SARs of 13a-substituted phenanthroindolizidine alkaloid derivatives. Bioorg Med Chem Lett 2014; 24:2881-4. [PMID: 24835986 DOI: 10.1016/j.bmcl.2014.04.101] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/11/2014] [Accepted: 04/23/2014] [Indexed: 10/25/2022]
Abstract
On the basis of our previous structure-activity relationship (SAR) and antiviral mechanism studies, a series of 13a-substituted phenanthroindolizidine alkaloid analogues (3a-16a, 3b, 4b, 6b, 7b, 10b, and 14b) were designed targeting tobacco mosaic virus (TMV) RNA, synthesized, and evaluated for their antiviral activity against TMV for the first time. The bioassay results showed that most of the synthesized compounds (such as 4a, 6a, 7a, 11a, 14a, 6b, and 14b) exhibited good to excellent antiviral activity against TMV both in vitro and in vivo. Especially, for inactivation effect and curative effect, compounds 4a, 6a, 7a, 11a, 14a, and 14b showed higher activity at both concentrations (500 μg mL(-1) and 100 μg mL(-1)) than commercial Ningnanmycin. Preliminary SARs showed that the substituted groups with hydrogen donor at 13a position were found to be favorable for keeping high antiviral activity. The present work demonstrates that 13a-substituted phenanthroindolizidines can be used as possible lead compounds for developing anti-TMV agents.
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Affiliation(s)
- Bo Su
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Chunlong Cai
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Meng Deng
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Demin Liang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Lizhong Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
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Zhang P, Tang C, Chen Z, Wang B, Wang X, Jin L, Yang S, Hu D. Design, Synthesis, and Antiviral Activity of α-Aminophosphonates Bearing a Benzothiophene Moiety. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2013.829837] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Peiwei Zhang
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
| | - Chenghao Tang
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
| | - Zhiwei Chen
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
| | - Bo Wang
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
| | - Xiang Wang
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
| | - Linhong Jin
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
| | - Song Yang
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
| | - Deyu Hu
- a State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Guiyang , P. R. China
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Su B, Chen F, Wang L, Wang Q. Design, synthesis, antiviral activity, and structure-activity relationships (SARs) of two types of structurally novel phenanthroindo/quinolizidine analogues. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:1233-1239. [PMID: 24467600 DOI: 10.1021/jf405562r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To investigate the influence of the variation of the original skeletons of natural phenanthroindo/quinolizidine alkaloids on antiviral activities, two types of structurally totally novel analogues 7a, 7b, 16a, and 16b were designed, synthesized, and evaluated against tobacco mosaic virus (TMV) for the first time. Bioassay results indicated that all four of the newly designed analogues showed good to excellent antiviral activities, among which analogue 16a dispalyed comparable activity with that of ningnanmycin, perhaps one of the most successful commercial antiviral agents, thus emerging as a potential inhibitor of plant virus and serving as a new lead for further optimization. Further structure-activity relationships are also discussed, demonstrating for the first time that the same changes of the original skeletons of phenanthroindolizidine and phenanthroquinolizidine exihibted totally different antiviral activities results, providing some original and useful information about the preferential conformation for maintaining high activities.
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Affiliation(s)
- Bo Su
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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Gozzo F, Faoro F. Systemic acquired resistance (50 years after discovery): moving from the lab to the field. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:12473-91. [PMID: 24328169 DOI: 10.1021/jf404156x] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Induction of plant defense(s) against pathogen challenge(s) has been the object of progressively more intense research in the past two decades. Insights on mechanisms of systemic acquired resistance (SAR) and similar, alternative processes, as well as on problems encountered on moving to their practical application in open field, have been carefully pursued and, as far as possible, defined. In reviewing the number of research works published in metabolomic, genetic, biochemical, and crop protection correlated disciplines, the following outline has been adopted: 1, introduction to the processes currently considered as models of the innate immunity; 2, primary signals, such as salicylic acid (SA), jasmonic acid (JA), and abscisic acid (ABA), involved with different roles in the above-mentioned processes; 3, long-distance signals, identified from petiole exudates as mobile signaling metabolites during expressed resistance; 4, exogenous inducers, including the most significant chemicals known to stimulate the plant resistance induction and originated from both synthetic and natural sources; 5, fungicides shown to act as stimulators of SAR in addition to their biocidal action; 6, elusive mechanism of priming, reporting on the most recent working hypotheses on the pretranscriptional ways through which treated plants may express resistance upon pathogen attack and how this resistance can be transmitted to the next generation; 7, fitness costs and benefits of SAR so far reported from field application of induced resistance; 8, factors affecting efficacy of induced resistance in the open field, indicating that forces, unrevealed under controlled conditions, may be operative in the field; 9, concluding remarks address the efforts required to apply the strategy of crop resistance induction according to the rules of integrated pest management.
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Affiliation(s)
- Franco Gozzo
- Department of Food, Environmental and Nutritional Sciences, Section of Chemistry and Biomolecular Sciences, and ‡Department of Agricultural and Environmental Sciences, University of Milano Via Celoria 2, 20133 Milano, Italy
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Li Y, Hao X, Li S, He H, Yan X, Chen Y, Dong J, Zhang Z, Li S. Eudesmanolides from Wedelia trilobata (L.) Hitchc. as potential inducers of plant systemic acquired resistance. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:3884-90. [PMID: 23537063 DOI: 10.1021/jf400390e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Ten eudesmanolides (1-10) including five new ones (1-4 and 6) were isolated from the whole plant of Wedelia trilobata (L.) Hitchc., a notoriously invasive weed in South China. As main constituents of W. trilobata, eight of these eudesmanolides were tested for their antitobacco mosaic virus (TMV) activities by the conventional half-leaf and leaf-disk method along with Western blot analysis. All of the tested compounds, at 10 μg/mL, showed strong antiviral activities in the pretreated tobacco plants with inhibition rates ranging from 46.7% to 76.5%, significantly higher than that of the positive control, ningnanmycin (13.5%). Their potential of inducing systemic acquired resistance (SAR) was also evaluated, and compounds 1 and 8 showed excellent induction activities. Furthermore, it was found that different concentrations of compound 1 promoted phenylalanine ammonia-lyase (PAL) activity in tobacco plants. To our knowledge, this is the first report that eudesmanolides could induce resistance in tobacco plants against the viral pathogen TMV.
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Affiliation(s)
- Yating Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, China
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Hu QF, Zhou B, Huang JM, Gao XM, Shu LD, Yang GY, Che CT. Antiviral phenolic compounds from Arundina gramnifolia. JOURNAL OF NATURAL PRODUCTS 2013; 76:292-296. [PMID: 23368966 DOI: 10.1021/np300727f] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Five new phenolic compounds, gramniphenols C-G (1-5), and eight known compounds (6-13) were isolated from the whole plant of Arundina gramnifolia. Compounds 1, 4, and 5 showed anti-tobacco mosaic virus activity, with IC(50) values of 20.8, 40.8, and 57.7 μM, respectively. Compounds 1-10 were also tested for their anti-HIV-1 activity; compounds 2, 3, and 6 displayed anti-HIV-1 activity with therapeutic index values above 100:1.
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Affiliation(s)
- Qiu-Fen Hu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan University of Nationalities, Kunming, Yunnan, People's Republic of China
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Hu QF, Zhou B, Gao XM, Yang LY, Shu LD, Shen Y, Li GP, Che CT, Yang GY. Antiviral chromones from the stem of Cassia siamea. JOURNAL OF NATURAL PRODUCTS 2012; 75:1909-1914. [PMID: 23078294 DOI: 10.1021/np300395m] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Seven new chromones, siamchromones A-G (1-7), and 12 known chromones (8-19) were isolated from the stems of Cassia siamea. Compounds 1-19 were evaluated for their antitobacco mosaic virus (anti-TMV) and anti-HIV-1 activities. Compound 6 showed antitobacco mosaic virus (anti-TMV) activity with an inhibition rate of 35.3% and IC50 value of 31.2 μM, which is higher than that of the positive control, ningnamycin. Compounds 1, 10, 13, and 16 showed anti-TMV activities with inhibition rates above 10%. Compounds 4, 6, 13, and 19 showed anti-HIV-1 activities with therapeutic index values above 50.
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Affiliation(s)
- Qiu-Fen Hu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan University of Nationalities , Kunming 650031, Yunnan, People's Republic of China
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Wang Z, Wei P, Wang L, Wang Q. Design, synthesis, and anti-tobacco mosaic virus (TMV) activity of phenanthroindolizidines and their analogues. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:10212-10219. [PMID: 23035814 DOI: 10.1021/jf303550a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
On the basis of our previous structure-activity relationship (SAR) and antiviral mechanism studies, a series of phenanthroindolizidines and their analogues 3-20 were designed, targeting tobacco mosaic virus (TMV) RNA, synthesized, and systematically evaluated for their antiviral activity against TMV. The bioassay results showed that most of these compounds displayed good anti-TMV activity, and some of them exhibited higher antiviral activity than that of commercial Ningnanmycin (perhaps the most successful registered antiplant viral agent). Especially, (S)-deoxytylophorinine (5) with excellent anti-TMV activity (inactivation activity, 59.8%/500 μg mL(-1) and 40.3%/100 μg mL(-1); curative activity, 65.1%/500 μg mL(-1) and 43.7%/100 μg mL(-1); and protection activity, 70.2%/500 μg mL(-1) and 51.3%/100 μg mL(-1)) emerged as a potential inhibitor of the plant virus. Compound 20 exhibited a strong in vivo protection effect against TMV at 100 μg mL(-1), which indicated that phenanthroindolizidine analogues with a seven-membered D ring have a new and interesting structural scaffold and have great potential for further development as tobacco protection agents.
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Affiliation(s)
- Ziwen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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Wang Z, Wang L, Ma S, Liu Y, Wang L, Wang Q. Design, synthesis, antiviral activity, and SARs of 14-aminophenanthroindolizidines. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:5825-31. [PMID: 22662864 DOI: 10.1021/jf3013376] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Based on our previous structure-activity relationship and antiviral mechanism studies, a series of 14-aminophenanthroindolizidines (1a-i, 2, and 3) were designed, targeting tobacco mosaic virus (TMV) RNA, and synthesized and systematically evaluated for their antiviral activity against TMV. The bioassay results showed that most of these compounds exhibited good to excellent in vivo anti-TMV activity, of which compounds 1d and 1h displayed significantly higher activity than commercial ningnanmycin, and thus emerged as potential inhibitors of plant virus. The introduction of amino groups at the 14-position of phenanthroindolizidines, which is proposed to interact with arginine residues around the TMV RNA, increased anti-TMV activity.
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Affiliation(s)
- Ziwen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, China
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Chen Z, Zeng M, Song B, Hou C, Hu D, Li X, Wang Z, Fan H, Bi L, Liu J, Yu D, Jin L, Yang S. Dufulin activates HrBP1 to produce antiviral responses in tobacco. PLoS One 2012; 7:e37944. [PMID: 22662252 PMCID: PMC3360678 DOI: 10.1371/journal.pone.0037944] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Accepted: 04/26/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Dufulin is a new antiviral agent that is highly effective against plant viruses and acts by activating systemic acquired resistance (SAR) in plants. In recent years, it has been used widely to prevent and control tobacco and rice viral diseases in China. However, its targets and mechanism of action are still poorly understood. METHODOLOGY/PRINCIPAL FINDINGS Here, differential in-gel electrophoresis (DIGE) and classical two-dimensional electrophoresis (2-DE) techniques were combined with mass spectrometry (MS) to identify the target of Dufulin. More than 40 proteins were found to be differentially expressed (≥1.5 fold or ≤1.5 fold) upon Dufulin treatment in Nicotiana tabacum K(326). Based on annotations in the Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) databases, these proteins were found to be related to disease resistance. Directed acyclic graph (DAG) analysis of the various pathways demonstrated harpin binding protein-1 (HrBP1) as the target of action of Dufulin. Additionally, western blotting, semi-quantitative reverse transcription polymerase chain reaction (RT-PCR), and real time PCR analyses were also conducted to identify the specific mechanism of action of Dufulin. Our results show that activation of HrBP1 triggers the salicylic acid (SA) signaling pathway and thereby produces antiviral responses in the plant host. A protective assay based on lesion counting further confirmed the antiviral activity of Dufulin. CONCLUSION This study identified HrBP1 as a target protein of Dufulin and that Dufulin can activate the SA signaling pathway to induce host plants to generate antiviral responses.
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Affiliation(s)
- Zhuo Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Mengjiao Zeng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Chengrui Hou
- Shanghai Applied Protein Technology Co. Ltd., Shanghai, China
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Xiangyang Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Zhenchao Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Huitao Fan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Liang Bi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Jiaju Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Dandan Yu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Linhong Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
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Ge YH, Liu KX, Zhang JX, Mu SZ, Hao XJ. The limonoids and their antitobacco mosaic virus (TMV) activities from Munronia unifoliolata Oliv. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:4289-95. [PMID: 22500574 DOI: 10.1021/jf205362d] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Five new limonoids, named munronoids K-O (1-5), together with three known limonoids were isolated from Munronia unifoliola Oliv. These limonoids were involved in the skeletons of evodulone, gedunin, and peieurianin types of limonoids, and their structures were established on the basis of spectroscopic data. Compound 5 featuring a γ-lactone ring instead of the β-substituted furan ring was found in the peieurianin type for the first time. The antitobacco mosaic virus (anti-TMV) activities of compounds 1-8 were also evaluated with half-leaf, enzyme-linked immunosorbent assay, and Western blot methods, and limonoids 1, 5, and 8 showed stronger anti-TMV treatment activities than the positive control ningnanmycin. Six compounds (1-5 and 8) exhibited infection inhibition activities against TMV.
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Affiliation(s)
- Yong-hui Ge
- The Key Laboratory of Chemistry for Natural Product of Guizhou Province and Chinese Academy of Science, Guiyang 550002, People's Republic of China
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Zhang W, Yang X, Qiu D, Guo L, Zeng H, Mao J, Gao Q. PeaT1-induced systemic acquired resistance in tobacco follows salicylic acid-dependent pathway. Mol Biol Rep 2011; 38:2549-56. [PMID: 21088909 DOI: 10.1007/s11033-010-0393-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 11/08/2010] [Indexed: 10/18/2022]
Abstract
Systemic acquired resistance (SAR) is an inducible defense mechanism which plays a central role in protecting plants from pathogen attack. A new elicitor, PeaT1 from Alternaria tenuissima, was expressed in Escherichia coil and characterized with systemic acquired resistance to tobacco mosaic virus (TMV). PeaT1-treated plants exhibited enhanced systemic resistance with a significant reduction in number and size of TMV lesions on wild tobacco leaves as compared with control. The quantitative analysis of TMV CP gene expression with real-time quantitative PCR showed there was reduction in TMV virus concentration after PeaT1 treatment. Similarly, peroxidase (POD) activity and lignin increased significantly after PeaT1 treatment. The real-time quantitative PCR revealed that PeaT1 also induced the systemic accumulation of pathogenesis-related gene, PR-1a and PR-1b which are the markers of systemic acquired resistance (SAR), NPR1 gene for salicylic acid (SA) signal transduction pathway and PAL gene for SA synthesis. The accumulation of SA and the failure in development of similar level of resistance as in wild type tobacco plants in PeaT1 treated nahG transgenic tobacco plants indicated that PeaT1-induced resistance depended on SA accumulation. The present work suggested that the molecular mechanism of PeaT1 inducing disease resistance in tobacco was likely through the systemic acquired resistance pathway mediated by salicylic acid and the NPR1 gene.
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Affiliation(s)
- Wei Zhang
- Key Laboratory for Biological Control of Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081, People's Republic of China
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Yan XH, Chen J, Di YT, Fang X, Dong JH, Sang P, Wang YH, He HP, Zhang ZK, Hao XJ. Anti-tobacco mosaic virus (TMV) Quassinoids from Brucea javanica (L.) Merr. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:1572-1577. [PMID: 20050684 DOI: 10.1021/jf903434h] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Two new quassinoids, javanicolide E (1) and javanicolide F (2), along with fifteen known C-20 quassinoids were isolated from the seeds of Brucea javanica (L.) Merr. The antitobacco mosaic virus (TMV) activity of these quassinoids was screened by the conventional half-leaf and leaf-disk method along with Western blot analysis. All of the seventeen quassinoids showed potent anti-TMV activity. Among them, eight compounds, brusatol (3), bruceine B (4), bruceoside B (5), yadanzioside I (6), yadanzioside L (7), bruceine D (8), yadanziolide A (9), and aglycone of yadanziolide D (17), showed strong antiviral activities, with IC(50) values in the range of 3.42-5.66 microM, and were much more effective than the positive control, ningnanmycin (IC(50) = 117.3 microM). The antiviral structure-activity relationships of quassinoids against TMV were also discussed.
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Affiliation(s)
- Xiao-Hui Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China
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Chen G, Liu B, Tang Y, Deng Q, Hao XJ. Synthesis and novel crystal structure of(E,Z) 3- aminomethylene-1-ethyl -indol-2-one. HETEROCYCL COMMUN 2010. [DOI: 10.1515/hc.2010.16.1.25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Chen J, Yan XH, Dong JH, Sang P, Fang X, Di YT, Zhang ZK, Hao XJ. Tobacco mosaic virus (TMV) inhibitors from Picrasma quassioides Benn. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:6590-6595. [PMID: 19586051 DOI: 10.1021/jf901632j] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
To investigate natural inhibitors against tobacco mosaic virus (TMV) from plants, 10 known beta-carboline alkaloids and one quassinoid have been isolated from MeOH extract of the wood of Picrasma quassioides Benn. These compounds were screened for their inhibitory activities against tobacco mosaic virus (TMV). The activity of each compound against TMV infection and replication was tested using a half-leaf assay method, a leaf-disk method, and Western blotting analyses. All of the beta-carboline alkaloids showed moderate anti-TMV activities and exhibited synergistic effects when combined with the quassinoid nigakilactone B (11). To our knowledge, this is the first report on anti-TMV activity of beta-carbolines and their synergistic effects against TMV when combined with a quassinoid.
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Affiliation(s)
- Jia Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China
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