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Farouk HM, Attia EZ, Shaban GM, Abdelmohsen UR, El-Katatny MH. Antimicrobial secondary metabolites and antioxidant activities of fungal endophytes associated with Ziziphus spina-christi (L.) Desf. (Nabq) leaves. Nat Prod Res 2024:1-5. [PMID: 38630967 DOI: 10.1080/14786419.2024.2340761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 03/31/2024] [Indexed: 04/19/2024]
Abstract
A total of 20 endophytic fungi were isolated (ZSEFL1-ZSEFL20) from Ziziphus spina-christi (L.) Desf. (Nabq) leaves. Four isolates A2/ZSEFL2, Alternaria alternata, D/ZSEFL14, Aspergillus niger, E/ZSEFL15, Epicoccum nigrum, and S/ZSEFL19, Penicillium crustosum were found to show the most promising antimicrobial activities either in plug or disc diffusion screening assays against Gram-positive, Gram-negative bacteria and pathogenic fungi. Antimicrobial activity was tested against Pseudomonas aeruginosa ATCC 27853, Staphylococcus aureus ATCC 29213, Serratia marcescens ATCC 14764, Klebsiella pneumoniae ATCC 700603, Candida albicans ATCC 10231, and Fusarium oxysporum ATCC417. In vitro antioxidant activity assay was conducted using the ABTS [2,2'-Azino-bis (3-Ethylbenzthiazoline-6-Sulfonic Acid)] free radical scavenging method. EtOAc extracts of all isolated endophytic fungi showed antioxidant activities. This study would be one of the first reports to measure the antioxidant activity of Z. spina-christi (L.) Desf. endophytic fungi. Therefore, these isolated endophytic fungi can provide additional information for medicinal sources of natural antioxidants and antimicrobial agents.
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Affiliation(s)
- Hala Montaser Farouk
- Botany and Microbiology Department, Faculty of Science, Minia University, Minia, Egypt
| | - Eman Zekry Attia
- Pharmacognosy Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Gehan Mohamed Shaban
- Botany and Microbiology Department, Faculty of Science, Minia University, Minia, Egypt
| | - Usama Ramadan Abdelmohsen
- Pharmacognosy Department, Faculty of Pharmacy, Minia University, Minia, Egypt
- Pharmacognosy Department, Faculty of Pharmacy, Deraya University, New Minia, Egypt
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2
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Lee Y, Jang HR, Lee D, Lee J, Jung HR, Cho SY, Lee HY. Graphislactone A, a Fungal Antioxidant Metabolite, Reduces Lipogenesis and Protects against Diet-Induced Hepatic Steatosis in Mice. Int J Mol Sci 2024; 25:1096. [PMID: 38256169 PMCID: PMC10816634 DOI: 10.3390/ijms25021096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/12/2024] [Accepted: 01/14/2024] [Indexed: 01/24/2024] Open
Abstract
Graphislactone A (GPA), a secondary metabolite derived from a mycobiont found in the lichens of the genus Graphis, exhibits antioxidant properties. However, the potential biological functions and therapeutic applications of GPA at the cellular and animal levels have not yet been investigated. In the present study, we explored the therapeutic potential of GPA in mitigating non-alcoholic fatty liver disease (NAFLD) and its underlying mechanisms through a series of experiments using various cell lines and animal models. GPA demonstrated antioxidant capacity on a par with that of vitamin C in cultured hepatocytes and reduced the inflammatory response induced by lipopolysaccharide in primary macrophages. However, in animal studies using an NAFLD mouse model, GPA had a milder impact on liver inflammation while markedly attenuating hepatic steatosis. This effect was confirmed in an animal model of early fatty liver disease without inflammation. Mechanistically, GPA inhibited lipogenesis rather than fat oxidation in cultured hepatocytes. Similarly, RNA sequencing data revealed intriguing associations between GPA and the adipogenic pathways during adipocyte differentiation. GPA effectively reduced lipid accumulation and suppressed lipogenic gene expression in AML12 hepatocytes and 3T3-L1 adipocytes. In summary, our study demonstrates the potential application of GPA to protect against hepatic steatosis in vivo and suggests a novel role for GPA as an underlying mechanism in lipogenesis, paving the way for future exploration of its therapeutic potential.
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Affiliation(s)
- Yeonmi Lee
- Laboratory of Mitochondria and Metabolic Diseases, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Republic of Korea
| | - Hye-Rim Jang
- Laboratory of Mitochondria and Metabolic Diseases, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Republic of Korea
| | - Dongjin Lee
- Laboratory of Mitochondria and Metabolic Diseases, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Republic of Korea
| | - Jongjun Lee
- Laboratory of Mitochondria and Metabolic Diseases, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Republic of Korea
- Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology (GAIHST), Gachon University, Incheon 21999, Republic of Korea
| | - Hae-Rim Jung
- Genomic Medicine Institute, Medical Research Center, Seoul National University, Seoul 03080, Republic of Korea (S.-Y.C.)
| | - Sung-Yup Cho
- Genomic Medicine Institute, Medical Research Center, Seoul National University, Seoul 03080, Republic of Korea (S.-Y.C.)
- Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Hui-Young Lee
- Laboratory of Mitochondria and Metabolic Diseases, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Republic of Korea
- Division of Molecular Medicine, Department of Medicine, College of Medicine, Gachon University, Incheon 21936, Republic of Korea
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3
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Surya Prakash Rao H, Prabakaran M, Muthanna N. New method for synthesis of 7-hydroxydibenzopyran-6-ones: Benzannulation of coumarins by three-component condensation. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Isolation and Identification of Endophytic Fungi from Syzygium cumini Linn and Investigation of Their Pharmacological Activities. ScientificWorldJournal 2022; 2022:9529665. [DOI: 10.1155/2022/9529665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 10/21/2022] [Indexed: 11/05/2022] Open
Abstract
This study was conducted to isolate and identify the endophytic fungi from the bark and leaves of the Syzygum cumini plant and investigate the pharmacological activities of endophytic fungi along with plant parts. After isolation, endophytic fungi were identified based on morphological characteristics and molecular identification. Antimicrobial, antioxidant, and cytotoxic activities were studied by a disc diffusion method, free radical scavenging DPPH assay, and brine shrimp lethality bioassay, respectively. A total of eight endophytic fungi were isolated and identified up to the genus level based on morphological characteristics and confirmed by molecular identification techniques. Among the eight isolates, three isolates were identified as Colletotrichum sp. (SCBE-2, SCBE-7, and SCLE-9), while the rest of the isolates belonged to Diaporthe sp. (SCBE-1), Pestalotiopsis sp. (SCBE-3), Penicillium sp. (SCBE-4), Phyllosistica sp. (SCLE-7), and Fusarium sp. (SCLE-8). The presence of flavonoids, anthraquinones, coumarins, and isocoumarins was assumed by the preliminary screening of the fungal and plant extracts by a thin-layer chromatographic technique under UV light. Fungal extracts of Pestalotiopsis sp. Penicillium sp. were found sensitive to all test bacteria, but only extracts from the leaf and bark showed significant antifungal activity along with their antimicrobial activity. Penicillium sp. The fungal extract showed the highest free radical scavenging activity (2.43 μg/mL) near that of ascorbic acid (2.42 μg/mL). Some fungal extracts showed cytotoxic activity that, in general, suggests their probable abundance of biological metabolites. This is the first approach to investigate the endophytic fungi of Syzygium cumini Linn. in Bangladesh, to find the pharmacological potential of endophytes, and to explore novel compounds from those endophytes.
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Adeleke BS, Babalola OO. Meta-omics of endophytic microbes in agricultural biotechnology. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102332] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Mishra S, Sahu PK, Agarwal V, Singh N. Exploiting endophytic microbes as micro-factories for plant secondary metabolite production. Appl Microbiol Biotechnol 2021; 105:6579-6596. [PMID: 34463800 DOI: 10.1007/s00253-021-11527-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/12/2021] [Accepted: 08/15/2021] [Indexed: 01/19/2023]
Abstract
Plant secondary metabolites have significant potential applications in a wide range of pharmaceutical, food, and cosmetic industries by providing new chemistries and compounds. However, direct isolation of such compounds from plants has resulted in over-harvesting and loss of biodiversity, currently threatening several medicinal plant species to extinction. With the breakthrough report of taxol production by an endophytic fungus of Taxus brevifolia, a new era in natural product research was established. Since then, the ability of endophytic microbes to produce metabolites similar to those produced by their host plants has been discovered. The plant "endosphere" represents a rich and unique biological niche inhabited by organisms capable of producing a range of desired compounds. In addition, plants growing in diverse habitats and adverse environmental conditions represent a valuable reservoir for obtaining rare microbes with potential applications. Despite being an attractive and sustainable approach for obtaining economically important metabolites, the industrial exploitation of microbial endophytes for the production and isolation of plant secondary metabolites remains in its infancy. The present review provides an updated overview of the prospects, challenges, and possible solutions for using microbial endophytes as micro-factories for obtaining commercially important plant metabolites.Key points• Some "plant" metabolites are rather synthesized by the associated endophytes.• Challenges: Attenuation, silencing of BGCs, unculturability, complex cross-talk.• Solutions: Simulation of in planta habitat, advanced characterization methods.
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Affiliation(s)
- Sushma Mishra
- Plant Biotechnology Laboratory, Dayalbagh Educational Institute (Deemed-to-be-University), Agra, Uttar Pradesh, 282005, India.
| | - Pramod Kumar Sahu
- ICAR-National Bureau of Agriculturally Important Microorganisms, Kushmaur, Maunath Bhanjan, Uttar Pradesh, 275103, India
| | - Vishad Agarwal
- Plant Biotechnology Laboratory, Dayalbagh Educational Institute (Deemed-to-be-University), Agra, Uttar Pradesh, 282005, India
| | - Namrata Singh
- Plant Biotechnology Laboratory, Dayalbagh Educational Institute (Deemed-to-be-University), Agra, Uttar Pradesh, 282005, India
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Abe H, Jeelani I, Yonoki A, Imai H, Horino Y. Synthesis of Chloro-Substituted 6H-Dibenzo[b,d]pyran-6-one Natural Products, Graphislactone G, and Palmariols A and B. Chem Pharm Bull (Tokyo) 2021; 69:781-788. [PMID: 34334522 DOI: 10.1248/cpb.c21-00316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A palladium-mediated intramolecular aryl-aryl coupling reaction was applied to the total synthesis of the bioactive natural products, graphislactone G (1), and palmariols A (2) and B (3), which possess an unusual chloro-subsutituent on the 6H-dibenzo[b,d]pyran-6-one skeleton. Based on the transition state model of the coupling reaction, the mechanistic aspect for the regioselectivity of the aryl-aryl coupling reaction is also discussed.
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Affiliation(s)
- Hitoshi Abe
- Faculty of Engineering, University of Toyama
| | - Ishtiaq Jeelani
- Graduate School of Innovative Life Science, University of Toyama
| | | | - Haruka Imai
- Graduate School of Innovative Life Science, University of Toyama
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Alizadeh A, Farajpour B. Chemoselective Synthesis of Substituted Benzo[
c
]chromen‐6‐ones through Base‐Promoted Reaction of
α
,
β
‐Unsaturated Coumarins and
α
‐Cyano Carbonyls. ChemistrySelect 2021. [DOI: 10.1002/slct.202101490] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Abdolali Alizadeh
- Department of Chemistry Tarbiat Modares University P.O. Box 14115–175 Tehran Iran
| | - Behnaz Farajpour
- Department of Chemistry Tarbiat Modares University P.O. Box 14115–175 Tehran Iran
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Ibrahim M, Oyebanji E, Fowora M, Aiyeolemi A, Orabuchi C, Akinnawo B, Adekunle AA. Extracts of endophytic fungi from leaves of selected Nigerian ethnomedicinal plants exhibited antioxidant activity. BMC Complement Med Ther 2021; 21:98. [PMID: 33743702 PMCID: PMC7981982 DOI: 10.1186/s12906-021-03269-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 03/04/2021] [Indexed: 11/10/2022] Open
Abstract
Background Plants with an ethnobotanical history are known to harbor diverse group of endophytic fungi, which constitute major natural sources of bioactive compounds. In the present study, we evaluated the antioxidant activity of endophytic fungi from eight Nigerian ethnomedicinal plants. Endophytic fungi were isolated from the leaves of Acalypha ornata, Albizia zygia, Alchornea cordifolia, Chrysophyllum albidum, Ficus exasperata, Gomphrena celosioides, Millettia thonningii, and Newbouldia laevis. Methods Endophytic fungi were isolated from the leaves of selected plants via surface sterilization. Isolated fungi were identified by internal transcribed spacer (ITS-rDNA) sequence analysis. Pure fungal strains were subjected to fermentation process on solid rice medium and metabolites extracted using ethyl-acetate. Fungal crude extracts were screened for antioxidant activity using 2, 2- diphenyl-1-picrylhydrazyl (DPPH) radical scavenging and reduction of ferric ion assays. Gas chromatography/mass spectrometry (GC/MS) analysis was used to identify the major chemical constituents in active fungal extracts. Results A total of eighteen fungal endophytes with fungal codes CU (061 and 062); ZA (161, 162, 163, and 164); LO (261); CA (041, 042, and 043); FE (081, 082, and 084); GE (091); MO (211 and 212); and NA (021 and 022) were isolated from the eight ethnomedicinal plants A. ornata, A. zygia, A. cordifolia, C. albidum, F. exasperata, G. celosioides, M. thonningii, and N. laevis respectively. ZA 163 and MO 211 fungal extracts showed significant (p < 0.05) radical scavenging activity with IC50 values of 50.53 ± 0.01 and 86.69 ± 0.02 μg/ml respectively. Fungal extract CA 041 demonstrated significantly (p < 0.01) higher iron chelating activity than standard gallic acid with absorbance values of 0.803 and 1.107 at 250 and 500 μg/ml concentrations respectively. Pyrogallol, phenol, 2,6-dimethoxy-, phytol, dl-alpha-tocopherol, alpha-tocospiro, oleamide, methyl stearate, oleic acid, palmitic acid, campesterol, stigmasterol, β-sitosterol, urs-12-en-24-oic acid, 3-oxo-, methyl ester, lup-20(29)-en-3-one, and lupeol were detected in the selected active extracts. Conclusion These results showed that leaves of the selected Nigerian plants harbor diverse group of endophytic fungi, which can be potential antioxidant resource. Graphical abstract ![]()
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Affiliation(s)
- Mutiat Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, University of Lagos, College of Medicine campus, Idi-Araba, Lagos state, Nigeria.
| | - Elizabeth Oyebanji
- Department of Biological Sciences, Mountain Top University, Magboro, Ogun State, Nigeria
| | - Muinah Fowora
- Molecular Biology and Biotechnology Department, Nigeria Institute of Medical Research (NIMR), Yaba, Lagos state, Nigeria
| | - Ayobami Aiyeolemi
- Department of Pharmacognosy, Faculty of Pharmacy, University of Lagos, College of Medicine campus, Idi-Araba, Lagos state, Nigeria
| | - Chiamaka Orabuchi
- Department of Pharmacognosy, Faculty of Pharmacy, University of Lagos, College of Medicine campus, Idi-Araba, Lagos state, Nigeria
| | - Babajide Akinnawo
- Department of Pharmacognosy, Faculty of Pharmacy, University of Lagos, College of Medicine campus, Idi-Araba, Lagos state, Nigeria
| | - Adedotun A Adekunle
- Department of Botany, Faculty of Science, University of Lagos, Akoka, Lagos state, Nigeria
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Burragoni SG, Jeon J. Applications of endophytic microbes in agriculture, biotechnology, medicine, and beyond. Microbiol Res 2021; 245:126691. [PMID: 33508761 DOI: 10.1016/j.micres.2020.126691] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/14/2020] [Accepted: 12/30/2020] [Indexed: 12/26/2022]
Abstract
Endophytes are emerging as integral components of plant microbiomes. Some of them play pivotal roles in plant development and plant responses to pathogens and abiotic stresses, whereas others produce useful and/or interesting secondary metabolites. The appreciation of their abilities to affect plant phenotypes and produce useful compounds via genetic and molecular interactions has paved the way for these abilities to be exploited for health and welfare of plants, humans and ecosystems. Here we comprehensively review current and potential applications of endophytes in the agricultural, pharmaceutical, and industrial sectors. In addition, we briefly discuss the research objectives that should be focused upon in the coming years in order for endophytes and their metabolites to be fully harnessed for potential use in diverse areas.
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Affiliation(s)
- Sravanthi Goud Burragoni
- Department of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
| | - Junhyun Jeon
- Department of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
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Abdel-Azeem MA, El-Maradny YA, Othman AM, Abdel-Azeem AM. Endophytic Fungi as a Source of New Pharmaceutical Biomolecules. Fungal Biol 2021. [DOI: 10.1007/978-3-030-85603-8_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Kouipou Toghueo RM, Boyom FF. Endophytes from ethno-pharmacological plants: Sources of novel antioxidants- A systematic review. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101430] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Abstract
Endophytic fungi are an important component that colonizes in healthy tissues of living plants and can be readily isolated from any microbial or plant growth medium. They act as reservoirs of novel bioactive secondary metabolites, such as alkaloids, phenolic acids, quinones, steroids, saponins, tannins, and terpenoids that serve as a potential candidate for antimicrobial, anti-insect, anticancer and many more properties. Their huge diversity and particular habituation, they can provide a good area for research in the field of making new medicines and novel drug-like molecules. Because of the impact of endophytes on host plant by enhancing their growth or increasing their fitness, also making them tolerant to abiotic and biotic stresses and holding the secondary metabolites, endophytes are gaining attention as a subject for research. This review aims to comprehend the contribution and uses of endophytes and relationships between endophytic fungi and their host medicinal plants.
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Zhou J, Diao X, Wang T, Chen G, Lin Q, Yang X, Xu J. Phylogenetic diversity and antioxidant activities of culturable fungal endophytes associated with the mangrove species Rhizophora stylosa and R. mucronata in the South China Sea. PLoS One 2018; 13:e0197359. [PMID: 29897911 PMCID: PMC5999087 DOI: 10.1371/journal.pone.0197359] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 05/01/2018] [Indexed: 12/19/2022] Open
Abstract
Mangrove endophytic fungi can produce impressive quantities of metabolites with promising antioxidant activities that may be useful to humans as novel physiological agents. In this study, we investigated the phylogenetic diversity and antioxidant potential of 46 fungal endophytes derived from the mangrove species Rhizophora stylosa and R. mucronata from the South China Sea. The fungal isolates were identified using a combination of morphological characteristics and phylogenetic analysis of the internal transcribed spacer (ITS) sequences. Seventeen genera belonging to 8 taxonomic orders of Ascomycota were discovered, specifically, Botryosphaeriales, Capnodiales, Diaporthales, Eurotiales, Glomerellales, Hypocreales, Pleosporales, and Xylariales. The most abundant fungal orders included Xylariales (35.49%) and Diaporthales (27.61%), which were predominantly represented by the culturable species Pestalotiopsis sp. (34.54%) and Diaporthe sp. (18.62%). The stems showed more frequent colonization and species diversity than the roots, leaves, hypocotyls, and flower tissues of the host plant. The antioxidant activities of all the isolated fungal extracts on four different culture media were assessed using improved 2,2′-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonicacid) (ABTS) methods. A relatively high proportion (84.8%) of the isolates displayed antioxidant capacity (%RSA > 50%). Further research also provided the first evidence that HQD-6 could produce flufuran as a significant radical scavenger with IC50 values of 34.85±1.56 and 9.75±0.58 μg/mL, respectively. Our findings suggest that the utilization of a biotope such as that of the endophytic fungal community thriving on the mangrove plants R. stylosa and R. mucronata may be suitable for use as a sustainable resource for natural antioxidants.
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Affiliation(s)
- Jing Zhou
- Institute of Tropical Agriculture and Forestry, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
| | - Xiaoping Diao
- Institute of Tropical Agriculture and Forestry, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China
| | - Tao Wang
- Institute of Tropical Agriculture and Forestry, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
| | - Guangying Chen
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China
| | - Qiang Lin
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China
| | - Xiaobo Yang
- Institute of Tropical Agriculture and Forestry, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
- * E-mail: (XY); (JX)
| | - Jing Xu
- Institute of Tropical Agriculture and Forestry, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China
- * E-mail: (XY); (JX)
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Taheri Kal Koshvandi A, Heravi MM, Momeni T. Current Applications of Suzuki–Miyaura Coupling Reaction in The Total Synthesis of Natural Products: An update. Appl Organomet Chem 2018. [DOI: 10.10.1002/aoc.4210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Tayebeh Momeni
- Department of ChemistryAlzahra University Vanak Tehran Iran
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18
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Taheri Kal Koshvandi A, Heravi MM, Momeni T. Current Applications of Suzuki–Miyaura Coupling Reaction in The Total Synthesis of Natural Products: An update. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4210] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | | | - Tayebeh Momeni
- Department of ChemistryAlzahra University Vanak Tehran Iran
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Yu N, Wei YL, Zhang X, Zhu N, Wang YL, Zhu Y, Zhang HP, Li FM, Yang L, Sun JQ, Sun AD. Barcode ITS2: a useful tool for identifying Trachelospermum jasminoides and a good monitor for medicine market. Sci Rep 2017; 7:5037. [PMID: 28698616 PMCID: PMC5506054 DOI: 10.1038/s41598-017-04674-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 05/18/2017] [Indexed: 01/31/2023] Open
Abstract
Trachelospermum jasminoides is commonly used in traditional Chinese medicine. However, the use of the plant's local alternatives is frequent, causing potential clinical problems. The T. jasminoides sold in the medicine market is commonly dried and sliced, making traditional identification methods difficult. In this study, the ITS2 region was evaluated on 127 sequences representing T. jasminoides and its local alternatives according to PCR and sequencing rates, intra- and inter-specific divergences, secondary structure, and discrimination capacity. Results indicated the 100% success rates of PCR and sequencing and the obvious presence of a barcoding gap. Results of BLAST 1, nearest distance and neighbor-joining tree methods showed that barcode ITS2 could successfully identify all the texted samples. The secondary structures of the ITS2 region provided another dimensionality for species identification. Two-dimensional images were obtained for better and easier identification. Previous studies on DNA barcoding concentrated more on the same family, genus, or species. However, an ideal barcode should be variable enough to identify closely related species. Meanwhile, the barcodes should also be conservative in identifying distantly related species. This study highlights the application of barcode ITS2 in solving practical problems in the distantly related local alternatives of medical plants.
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Affiliation(s)
- Ning Yu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Yu-Long Wei
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Xin Zhang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Ning Zhu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Yan-Li Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Yue Zhu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Hai-Ping Zhang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Fen-Mei Li
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Lan Yang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Jia-Qi Sun
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China
| | - Ai-Dong Sun
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, 100083, China.
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The Fungal Endobiome of Medicinal Plants: A Prospective Source of Bioactive Metabolites. MEDICINAL AND AROMATIC PLANTS OF THE WORLD 2017. [DOI: 10.1007/978-981-10-5978-0_7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Abstract
The α-pyrone moiety is a structural feature found in a huge variety of biologically active metabolites. In recent times new insights into additional biosynthetic mechanisms, yielding in such six-membered unsaturated ester ring residues have been obtained. The purpose of this mini-review is to give a brief overview of α-pyrones and the mechanisms forming the basis of their natural synthesis. Especially the chain interconnecting enzymes, showing homology to ketosynthases which catalyze Claisen-like condensation reactions, will be presented.
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Affiliation(s)
- Till F Schäberle
- Institute for Pharmaceutical Biology, University of Bonn, Nußallee 6, 53115 Bonn, Germany
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Garazd YL, Garazd MM. Natural Dibenzo[b,d]Pyran-6-Ones: Structural Diversity and Biological Activity. Chem Nat Compd 2016. [DOI: 10.1007/s10600-016-1536-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ravinarayanan H, Paul BK, Chakraborty A, Sundar K. Homology modeling of target proteins and identification novel antifungal compounds against Candida tropicalis through structure based virtual screening. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2015:4419-22. [PMID: 26737275 DOI: 10.1109/embc.2015.7319375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Candida tropicalis, the etiological agent of candidiasis evades the immune system and survive in the human host for decades. Currently there are not many drugs available in the market to treat these fungal infections. The increasing number of fungal infections necessitates the need for new drug candidates that can be used to treat fungal infections such as candida. Many natural products available in plants, animals and microorganisms exhibit potent anti-microbial activity; but they are not explored to their potential. Virtual screening of anti-microbials against known targets accelerates the process of drug discovery and development. In the present study, a total of 27 compounds of natural origin such as plants, microbes and marine sponges were evaluated for their ability to interact with four of the new targets. The study revealed the effectiveness of 3 compounds with improved binding affinity against the four target proteins; that could be used as lead compounds in designing new drug candidates.
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Deepika VB, Murali TS, Satyamoorthy K. Modulation of genetic clusters for synthesis of bioactive molecules in fungal endophytes: A review. Microbiol Res 2015; 182:125-40. [PMID: 26686621 DOI: 10.1016/j.micres.2015.10.009] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/21/2015] [Accepted: 10/26/2015] [Indexed: 11/26/2022]
Abstract
Novel drugs with unique and targeted mode of action are very much need of the hour to treat and manage severe multidrug infections and other life-threatening complications. Though natural molecules have proved to be effective and environmentally safe, the relative paucity of discovery of new drugs has forced us to lean towards synthetic chemistry for developing novel drug molecules. Plants and microbes are the major resources that we rely upon in our pursuit towards discovery of novel compounds of pharmacological importance with less toxicity. Endophytes, an eclectic group of microbes having the potential to chemically bridge the gap between plants and microbes, have attracted the most attention due to their relatively high metabolic versatility. Since continuous large scale supply of major metabolites from microfungi and especially endophytes is severely impeded by the phenomenon of attenuation in axenic cultures, the major challenge is to understand the regulatory mechanisms in operation that drive the expression of metabolic gene clusters of pharmaceutical importance. This review is focused on the major regulatory elements that operate in filamentous fungi and various combinatorial multi-disciplinary approaches involving bioinformatics, molecular biology, and metabolomics that could aid in large scale synthesis of important lead molecules.
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Affiliation(s)
- V B Deepika
- Division of Biotechnology, School of Life Sciences, Manipal University, Manipal 576104, India
| | - T S Murali
- Division of Biotechnology, School of Life Sciences, Manipal University, Manipal 576104, India.
| | - K Satyamoorthy
- Division of Biotechnology, School of Life Sciences, Manipal University, Manipal 576104, India
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Cui JL, Guo TT, Ren ZX, Zhang NS, Wang ML. Diversity and antioxidant activity of culturable endophytic fungi from alpine plants of Rhodiola crenulata, R. angusta, and R. sachalinensis. PLoS One 2015; 10:e0118204. [PMID: 25768014 PMCID: PMC4359136 DOI: 10.1371/journal.pone.0118204] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 01/11/2015] [Indexed: 12/20/2022] Open
Abstract
Rhodiola spp. are rare and endangered alpine plants widely used as medicines and food additives by many civilizations since ancient times. Their main effective ingredients (such as salidroside and p-tyrosol) are praised to exhibit pharmacologic effects on high-altitude sickness and possess anti-aging and other adaptogenic capacities based on their antioxidant properties. In this study, 347 endophytic fungi were isolated from R. crenulata, R. angusta, and R. sachalinensis, and the molecular diversity and antioxidant activities of these fungi were investigated for the first time. These fungi were categorized into 180 morphotypes based on cultural characteristics, and their rRNA gene ITS sequences were analyzed by BLAST search in the GenBank database. Except for 12 unidentified fungi (6.67%), all others were affiliated to at least 57 genera in 20 orders of four phyla, namely, Ascomycota (88.89%), Basidiomycota (2.78%), Zygomycota (1.11%), and Glomeromycota (0.56%), which exhibited high abundance and diversity. Antioxidant assay showed that the DPPH radical-scavenging rates of 114 isolates (63.33%) were >50%, and those of five isolates (Rct45, Rct63, Rct64, Rac76, and Rsc57) were >90%. The EC50 values of five antioxidant assays suggested significant potential of these fungi on scavenging DPPH•, O2-•, and OH• radicals, as well as scavenging nitrite and chelating Fe2+, which showed preference and selection between endophytic fungi and their hosts. Further research also provided the first evidence that Rac12 could produce salidrosides and p-tyrosol. Results suggested that versatile endophytic fungi associated with Rhodiola known as antioxidants could be exploited as potential sources of novel antioxidant products.
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Affiliation(s)
- Jin-Long Cui
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi Province, People’s Republic of China
| | - Ting-Ting Guo
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi Province, People’s Republic of China
- Institute of Biotechnology, Shanxi University, Taiyuan, Shanxi Province, People’s Republic of China
| | - Zhen-Xing Ren
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi Province, People’s Republic of China
| | - Na-Sha Zhang
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi Province, People’s Republic of China
- Institute of Biotechnology, Shanxi University, Taiyuan, Shanxi Province, People’s Republic of China
| | - Meng-Liang Wang
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi Province, People’s Republic of China
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In vitro antioxidant activity and total phenolic content of endophytic fungi isolated from Eugenia jambolana Lam. ASIAN PAC J TROP MED 2014; 7S1:S256-61. [PMID: 25312132 DOI: 10.1016/s1995-7645(14)60242-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 06/01/2014] [Accepted: 06/13/2014] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To elucidate the antioxidant activity and total phenolic content (TPC) of ethyl acetate extracts of endophytic fungi isolated from Eugenia jambolana by three different antioxidant assays. METHODS Twenty one different endophytic fungal extracts were screened for presence of various phytochemicals, TPC and in vitro antioxidant activity. TPC was tested by Folin-Ciocalteau reagent based assay. DPPH free radical scavenging, hydrogen peroxide scavenging and reducing power assays were used to evaluate the antioxidant activity. RESULTS Alkaloids, phenols, flavonoids, saponins, and terpenes were the main phytochemicals presents in all 21 endophytes. A significant positive correlation was found between antioxidant activity and TPC in fungal extracts. There is 36% endophytic extracts having high phenolic content exhibited potent antioxidant activity. Chaetomium sp., Aspergillus sp., Aspergillus peyronelii and Aspergillus niger strain showed the highest antioxidant activity ranging from 50% to 80% having 58 mg/g to 60 mg/g GAE total phenolics. Ascorbic acid used as a standard showed 90% reducing potential. CONCLUSIONS The results reveal that metabolites produced by endophytic fungi isolated from Eugenia jambolana can be a potential source of novel natural antioxidant compounds.
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Poudel TN, Lee YR. An advanced and novel one-pot synthetic method for diverse benzo[c]chromen-6-ones by transition-metal free mild base-promoted domino reactions of substituted 2-hydroxychalcones with β-ketoesters and its application to polysubstituted terphenyls. Org Biomol Chem 2014; 12:919-30. [DOI: 10.1039/c3ob41800f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel one-pot syntheses of a variety of benzo[c]chromen-6-one derivatives were accomplished by Cs2CO3-promoted reactions of 2-hydroxychalcones.
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Affiliation(s)
- Tej Narayan Poudel
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749, Republic of Korea
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Abe H, Takeuchi Y, Maeda K, Matsukihira T, Saga S, Harayama T, Horino Y. Regioselectivity of the Intramolecular Biaryl Coupling Reaction of 3-Substituted Phenyl 2-Iodobenzoate using a Palladium Reagent. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)10] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lysilactones A–C, three 6H-dibenzo[b,d]pyran-6-one glycosides from Lysimachia clethroides, total synthesis of Lysilactone A. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Elvira Sánchez-Fernández R, Lorena Sánchez-Ortiz B, Monserrat Sandoval-Espinosa YK, Ulloa-Benítez Á, Armendáriz-Guillén B, Claudia García-Méndez M, Lydia Macías-Rubalcava M. Hongos endófitos: fuente potencial de metabolitos secundarios bioactivos con utilidad en agricultura y medicina. TIP REVISTA ESPECIALIZADA EN CIENCIAS QUÍMICO-BIOLÓGICAS 2013. [DOI: 10.1016/s1405-888x(13)72084-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Murdifin M, Wahyudin E, Lawrence GS, Subehan, Manggau MA, Alam G. Phytochemical analysis and antioxidant activity of Mezzetia parviflora Becc. Woodbark extract. ACTA ACUST UNITED AC 2012. [DOI: 10.5530/pj.2012.34.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ravindran C, Varatharajan GR, Rajasabapathy R, Vijayakanth S, Kumar AH, Meena RM. A role for antioxidants in acclimation of marine derived pathogenic fungus (NIOCC 1) to salt stress. Microb Pathog 2012; 53:168-79. [PMID: 22809619 DOI: 10.1016/j.micpath.2012.07.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 07/03/2012] [Accepted: 07/05/2012] [Indexed: 11/18/2022]
Abstract
Salinity tolerance a key factor helps in understanding the ionic homeostasis in general, which is a fundamental cellular phenomenon in all living cells. Here, a marine derived pathogenic fungus was examined for its adaptation under salt stress using antioxidant properties. The aqueous extracts of halophilic fungus exhibited different levels of antioxidant activity in all the in vitro tests such as α,α-diphenyl-β-picrylhydrazyl (DPPH(·)), Hydroxyl Radical Scavenging Assay (HRSA), Metal chelating assay and β-carotene-linoleic acid model system. The antioxidant capacity of marine fungus exposed to high salt condition showed an increase in activity. In addition, the production of intra and extracellular antioxidant enzymes of the fungus at various salt stresses were analyzed and discussed for their possible role in the stress mechanism. The marine derived fungus was identified as Phialosimplex genus, which is associated with infections in dogs. Thus the present study elucidates that the scavenging activity is one of the protective mechanisms developed in the fungus to avoid the deleterious effect of salt stress. In addition, the study also helps in understanding how the pathogenic fungus tackles the oxidative burst i.e. hypersensitivity reaction performed by host to kill the pathogens.
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Affiliation(s)
- Chinnarajan Ravindran
- Biotechnology Laboratory, Biological Oceanography Division, National Institute of Oceanography, Council of Scientific and Industrial Research, Dona Paula, Goa 403004, India.
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Sourcing the Fungal Endophytes: A Beneficial Transaction of Biodiversity, Bioactive Natural Products, Plant Protection and Nanotechnology. MICROORGANISMS IN SUSTAINABLE AGRICULTURE AND BIOTECHNOLOGY 2012. [PMCID: PMC7120178 DOI: 10.1007/978-94-007-2214-9_26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Endophytes are the group of microorganisms that reside to internal and healthy tissues without causing negative symptoms to their host plant. Endophytes are extremely diverse and range from fungi, bacteria and actinomycetes. Development of drug resistance to pathogenic forms of bacteria, fungi and other microbes, emergence of lethal viruses, the perpetuating epidemics in developing and under developing countries, and multifold fungal infection, enhancement in human population globally, all shows our inability to overcome these biomedical problems. In addition to this, we are also unable to assure people towards enough food security in specific regions of the earth due to infestation of different plant diseases. Since the fungal endophytes are relatively less studied group of microbial flora, but are responsible for several prospects such as biodiversity, ecology, bioactive metabolites (metabolomics) and nanotechnology, may enable us to overcome the above mentioned problems. Fungal endophytes represent a dependable source of specific secondary metabolites and can be manipulated both physicochemically and genetically to increase yield of desired compounds and to produce novel analogues of active metabolites. In this chapter, we have discussed several bioactive compounds and classified them in to different classes as per their properties such as antifungal, antibacterial, antiviral, antimalarial, anticancer, antioxidants, antidiabetic and immunosuppressive agents derived from fungal endophytes with their hosts and made the chemical structures for 73 compounds using chemdraw 3D ultra version 7.0. These bioactive products are related to human health with MIC/EC/IC50 values less that 50 μg/mL. This article also discusses nematicidal, some antimicrobial volatile compounds (VOCs) that are related to plant protection and faecal disposal. Therefore, this chapter is not very specific and covers almost prospects of fungal endophytes which could be useful in biodiversity, agrochemicals, biotechnology, biomedical and nanotechnology in ecofriendly manner.
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Devi NN, Prabakaran JJ, Wahab F. Phytochemical analysis and enzyme analysis of endophytic fungi from Centella asiatica. Asian Pac J Trop Biomed 2012. [DOI: 10.1016/s2221-1691(12)60400-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Ravindran C, Naveenan T. Adaptation of marine derived fungus Chaetomium globosum (NIOCC 36) to alkaline stress using antioxidant properties. Process Biochem 2011. [DOI: 10.1016/j.procbio.2010.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pimentel MR, Molina G, Dionísio AP, Maróstica Junior MR, Pastore GM. The use of endophytes to obtain bioactive compounds and their application in biotransformation process. BIOTECHNOLOGY RESEARCH INTERNATIONAL 2010; 2011:576286. [PMID: 21350663 PMCID: PMC3042614 DOI: 10.4061/2011/576286] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Accepted: 08/09/2010] [Indexed: 11/20/2022]
Abstract
Endophytes are microorganisms that reside asymptomatically in the tissues of higher plants and are a promising source of novel organic natural metabolites exhibiting a variety of biological activities. The laboratory of Bioaromas (Unicamp, Brazil) develops research in biotransformation processes and functional evaluation of natural products. With the intent to provide subsidies for studies on endophytic microbes related to areas cited before, this paper focuses particularly on the role of endophytes on the production of anticancer, antimicrobial, and antioxidant compounds and includes examples that illustrate their potential for human use. It also describes biotransformation as an auspicious method to obtain novel bioactive compounds from microbes. Biotransformation allows the production of regio- and stereoselective compounds under mild conditions that can be labeled as "natural," as discussed in this paper.
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Affiliation(s)
- Mariana Recco Pimentel
- Laboratory of Bioflavors,Department of Food Science, School of Food Engineering, University of Campinas, P.O. Box 6121, 13083-862 Campinas, SP, Brazil
| | - Gustavo Molina
- Laboratory of Bioflavors,Department of Food Science, School of Food Engineering, University of Campinas, P.O. Box 6121, 13083-862 Campinas, SP, Brazil
| | - Ana Paula Dionísio
- Laboratory of Bioflavors,Department of Food Science, School of Food Engineering, University of Campinas, P.O. Box 6121, 13083-862 Campinas, SP, Brazil
| | - Mário Roberto Maróstica Junior
- Laboratory of Nutrition and Metabolism, Department of Food and Nutrition, School of Food Engineering, University of Campinas, P.O. Box 6121, 13083-862 Campinas, SP, Brazil
| | - Gláucia Maria Pastore
- Laboratory of Bioflavors,Department of Food Science, School of Food Engineering, University of Campinas, P.O. Box 6121, 13083-862 Campinas, SP, Brazil
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Surveswaran S, Cai YZ, Xing J, Corke H, Sun M. Antioxidant properties and principal phenolic phytochemicals of Indian medicinal plants from Asclepiadoideae and Periplocoideae. Nat Prod Res 2010; 24:206-21. [PMID: 20140800 DOI: 10.1080/14786410802228827] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The subfamily Asclepiadoideae (Apocynaceae) and the closely-related Periplocoideae are sources of many indigenous Indian medicinal plants. We surveyed antioxidant properties and total phenolic and flavonoid contents of 15 samples, representing 12 Indian medicinal plant species from these subfamilies. Total antioxidant assay was performed using the 2,2-azinobis-3-ethylbenzothiazoline-6-sulfonic acid and ferric-reducing antioxidant power methods. Total phenolic and flavonoid contents were measured using colourimetric methods. Principal phenolic compounds were detected by liquid chromatography-mass spectrometry (LC-MS). The highest antioxidant capacity and high levels of total phenolics and flavonoids were found in the leaves of Decalepis hamiltonii. The stems of Sarcostemma brevistigma exhibited the highest xanthine oxidase (XO) inhibitory activity. The roots of Hemidesmus indicus showed the highest OH(-) radical scavenging activity. In general, Periplocoideae members exhibited higher antioxidant activity than Asclepiadoideae members. The highly significant and positive correlations (R > 0.914) between total antioxidant capacity parameters and total phenolic content indicated that the phenolic compounds contributed significantly to the antioxidant activity of the tested plant samples. The principal phenolic phytochemicals from these plants were identified by LC-MS, including flavonoids, phenolic acids and phenolic terpenoids. Chlorogenic acid and rutin were detected in almost all of the plant samples. The LC-MS analysis provided full fingerprints of the principal phenolic compounds in the medicinal plants from these two subfamilies, which are useful for their authentication and quality evaluation.
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Lv YL, Zhang FS, Chen J, Cui JL, Xing YM, Li XD, Guo SX. Diversity and Antimicrobial Activity of Endophytic Fungi Associated with the Alpine Plant Saussurea involucrata. Biol Pharm Bull 2010; 33:1300-6. [DOI: 10.1248/bpb.33.1300] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ya-li Lv
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College
- Baotou Medical College of Inner Mongolia Science & Technology University
| | - Fu-sheng Zhang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College
| | - Juan Chen
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College
| | - Jin-long Cui
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College
| | - Yong-mei Xing
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College
| | - Xiang-dong Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College
| | - Shun-xing Guo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College
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Zhu F, Cai YZ, Sun M, Ke J, Lu D, Corke H. Comparison of major phenolic constituents and in vitro antioxidant activity of diverse Kudingcha genotypes from Ilex kudingcha, Ilex cornuta, and Ligustrum robustum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:6082-6089. [PMID: 19601659 DOI: 10.1021/jf901020h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A total of seven Kudingcha genotypes from three plant species (Ilex kudingcha, Ilex cornuta, and Ligustrum robustum) with different geographic origins in China were investigated for their major phenolic compounds, individual and total phenolics contents, and in vitro antioxidant properties (ABTS, DPPH, FRAP, and OH assays). LC-PDA-APCI-MS analysis showed that Kudingcha genotypes from Ilex and Ligustrum had entirely different phenolic profiles. Major phenolics in Kudingcha genotypes from two Ilex species were mono- and dicaffeoylquinic acids, whereas those in a Kudingcha genotype from Ligustrum were phenylethanoid and monoterpenoid glycosides. All Kudingcha genotypes of Ilex exhibited significantly stronger antioxidant capacities than that of Ligustrum. Within six Ilex genotypes, great variation existed in their composition of individual phenolic compounds and their antioxidant properties. The comparative data and LC fingerprints obtained in this study may provide useful information for screening and breeding of better Kudingcha genotypes and also for their authentication and quality control.
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Affiliation(s)
- Fan Zhu
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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Altemöller M, Gehring T, Cudaj J, Podlech J, Goesmann H, Feldmann C, Rothenberger A. Total Synthesis of Graphislactones A, C, D, and H, of Ulocladol, and of the Originally Proposed and Revised Structures of Graphislactones E and F. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801278] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Endophytic fungi from Nerium oleander L (Apocynaceae): main constituents and antioxidant activity. World J Microbiol Biotechnol 2007. [DOI: 10.1007/s11274-007-9357-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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