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Miao XX, Hong LL, Liu HY, Shang RY, Jiao WH, Xu SH, Lin HW. Marcytoglobosins A and B, Cytochalasans from a Marine Sponge Associated Chaetomium globosum 162105 Fungus. Chem Biodivers 2024:e202400832. [PMID: 38712949 DOI: 10.1002/cbdv.202400832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/07/2024] [Accepted: 05/07/2024] [Indexed: 05/08/2024]
Abstract
Two new cytochalasans, marcytoglobosins A (1) and B (2) were isolated from the marine sponge associated fungus Chaetomium globosum 162105, along with six known compounds (3-8). The complete structures of two new compounds were determined based on 1D/2D NMR and HR-MS spectroscopic analyses coupled with ECD calculations. All eight isolates were evaluated for their antibacterial activity. Among them, compounds 3-8 displayed antibacterial effects against Staphylococcus epidermidis, Bacillus thuringiensis, Pseudomonas syringae pv. Actinidiae, Vibrio alginolyticus, and Edwardsiella piscicida with minimum inhibitory concentration (MIC) values ranging from 10 to 25 μg/mL.
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Affiliation(s)
- Xian-Xian Miao
- Jinan University, Chemistry, College of Chemistry and Materials Science, 855, Xingye Avenue, guangzhou, CHINA
| | - Li-Li Hong
- shanghai jiaotong daxue yixueyuan fushu renji yiyuan, Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University,, 160, Pujian Road, shanghai, CHINA
| | - Hong-Yan Liu
- shanghai jiaotong daxue yixueyuan fushu renji yiyuan, Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160, Pujian Road, shanghai, CHINA
| | - Ru-Yi Shang
- shanghai jiaotong daxue yixueyuan fushu renji yiyuan, Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160, Pujian Road, shanghai, CHINA
| | - Wei-Hua Jiao
- shanghai jiaotong daxue yixueyuan fushu renji yiyuan, Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160, Pujian Road, shanghai, CHINA
| | - Shi-Hai Xu
- Jinan University, Chemistry, College of Chemistry and Materials Science, 855, Xingye Avenue, guangzhou, CHINA
| | - Hou-Wen Lin
- Renji Hospital, School of Medicine, Shanghai Jiaotong University, Department of Pharmacy, 160, Pujian Road, 200127, Shanghai, CHINA
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Gao W, Jiang R, Zeng H, Cao J, Hu Z, Zhang Y. Armochaetoglasins L and M, new cytochalasans from an arthropod-derived fungus Chaetomium globosum. Nat Prod Res 2024; 38:1599-1605. [PMID: 36441184 DOI: 10.1080/14786419.2022.2150846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 10/27/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022]
Abstract
Armochaetoglasins L (1) and M (2), two new cytochalasans, were isolated from the EtOAc extract of an arthropod-derived fungus Chaetomium globosum. Armochaetoglasin L (1) is a rare 19,20-seco-chaetoglobosin. Their structures were elucidated by NMR spectroscopy and comparison of their electronic circular dichroism (ECD) data. Compounds 1 and 2 were evaluated for anti-inflammatory activity against the NO production by using LPS-stimulated murine macrophage RAW264.7 cells and antibacterial activity against three drug-resistant microbial pathogens.
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Affiliation(s)
- Weixi Gao
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, P. R. China
| | - Rui Jiang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Hanxiao Zeng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Jie Cao
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Zhengxi Hu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
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Wang W, Huang J, Liao L, Yang X, Chen C, Liu J, Zhu H, Zhang Y. Chae-type cytochalasans from coculture of Aspergillus flavipes and Chaetomium globosum. Phytochemistry 2024; 219:113961. [PMID: 38182030 DOI: 10.1016/j.phytochem.2023.113961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/07/2024]
Abstract
Cocultivation of the high cytochalasan-producing fungi Aspergillus flavipes and Chaetomium globosum resulted in the isolation of 11 undescribed Chae-type cytochalasans. Their structures were determined by spectroscopic data and NMR data calculations. Asperchaetoglobin A (1) was the first Chae-type cytochalasan possessing an unprecedented nitrogen bridge between C-17 and C-20 to generate a surprising 5/6/12/5 multiple ring system; asperchaetoglobins B and C (2 and 3) displayed higher oxidation with an additional epoxide at the thirteen-member ring; asperchaetoglobin D (4) was the second Chae-type cytochalasin featuring a 5/6/12 tricyclic ring system. The cytotoxic activities against five human cancer cell lines and antibacterial activities against Staphylococcus aureus and Colon bacillus of selected compounds were evaluated in vitro.
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Affiliation(s)
- Wenjing Wang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, People's Republic of China
| | - Junguo Huang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, People's Republic of China
| | - Liangxiu Liao
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, People's Republic of China
| | - Xiaolong Yang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, People's Republic of China
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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Kumar V, Prasher IB. Phytochemical Analysis and Antioxidant Activity of Endophytic Fungi Isolated from Dillenia indica Linn. Appl Biochem Biotechnol 2024; 196:332-349. [PMID: 37129740 DOI: 10.1007/s12010-023-04498-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2023] [Indexed: 05/03/2023]
Abstract
Endophytic fungi live symbiotically inside plants and are hidden source of natural bioactive molecules. The present study was carried out to investigate the phytochemical analysis and antioxidant activity of endophytic fungi isolated from the ethnomedicinal plant Dillenia indica L. The ethyl acetate crude extracts of the endophytic fungal strains were preliminarily evaluated for their phytochemical analysis, and the results showed the presence of alkaloids, flavonoids, phenolics, terpene, and saponins. The crude extracts of more than 60% of the isolates showed 50-90% antioxidant activity by DPPH and H2O2 assay. The inhibition percentage of ethyl acetate extracts ranges from 34.05 to 91.5%, whereas IC50 values vary from 72.2 to 691.14%. Among all the strains, Fomitopsis meliae crude extract showed a maximum inhibition percentage, i.e., 91.5%, with an IC50 value of 88.27 µg/mL. Chaetomium globosum showed significant activity having an inhibition percentage of 89.88% and an IC50 value of 74.44 µg/mL. The total phenolic and flavonoid content in the crude extract of Chaetomium globosum was 37.4 mg gallic acid equivalent (GAE)/g DW and 31.0 mg quercetin equivalent (GAE)/g DW. GC-MS analysis of crude extract of C. globosum revealed different compounds, such as squalene; butanoic acid, 2-methyl-; hexadecanoic acid; 2-propanone, 1-phenyl-; 5-oxo-pyrrolidine-2-carboxylic acid methyl ester; 9,12-octadecadienoic acid (z)- etc. Many of these belong to phenolics, which are natural antioxidant compounds. The findings suggested that endophytic fungi associated with Dillenia indica L. can be a potential source of novel antioxidant compounds.
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Affiliation(s)
- Vijay Kumar
- Department of Botany, Panjab University, Chandigarh, 160014, India.
| | - I B Prasher
- Department of Botany, Panjab University, Chandigarh, 160014, India
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Chang CH, Hsiao G, Wang SW, Yen JY, Huang SJ, Chi WC, Lee TH. Chemical constituents from the medicinal herb-derived fungus Chaetomium globosum Km1226. Bot Stud 2023; 64:34. [PMID: 38030829 PMCID: PMC10686906 DOI: 10.1186/s40529-023-00406-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/20/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Endophytic fungi have proven to be a rich source of novel natural products with a wide-array of biological activities and higher levels of structural diversity. RESULTS Chemical investigation on the liquid- and solid-state fermented products of Chaetomium globosum Km1226 isolated from the littoral medicinal herb Atriplex maximowicziana Makino resulted in the isolation of compounds 1-14. Their structures were determined by spectroscopic analysis as three previously undescribed C13-polyketides, namely aureonitol C (1), mollipilins G (2), and H (3), along with eleven known compounds 4-14. Among these, mollipilin A (5) exhibited significant nitric oxide production inhibitory activity in LPS-induced BV-2 microglial cells with an IC50 value of 0.7 ± 0.1 µM, and chaetoglobosin D (10) displayed potent anti-angiogenesis property in human endothelial progenitor cells (EPCs) with an IC50 value of 0.8 ± 0.3 µM. CONCLUSIONS Three previously unreported compounds 1-3 were isolated and identified. Mollipilin A (5) and chaetoglobosin D (10) could possibly be developed as anti-inflammatory and anti-angiogenic lead drugs, respectively.
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Affiliation(s)
- Chia-Hao Chang
- Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan
| | - George Hsiao
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Shih-Wei Wang
- Department of Medicine, MacKay Medical College, New Taipei City, 25245, Taiwan
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, 25245, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung, 807378, Taiwan
- Department of Chinese Medicine, MacKay Memorial Hospital, Taipei, 10449, Taiwan
| | - Juei-Yu Yen
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, 25245, Taiwan
- Department of Chinese Medicine, MacKay Memorial Hospital, Taipei, 10491, Taiwan
| | - Shu-Jung Huang
- Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan
| | - Wei-Chiung Chi
- Department of Food Science, National Quemoy University, Kinmen, 89250, Taiwan.
| | - Tzong-Huei Lee
- Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan.
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Darshan K, Aggarwal R, Bashyal BM, Singh J, Saharan MS, Gurjar MS, Solanke AU. Characterization and development of transcriptome-derived novel EST-SSR markers to assess genetic diversity in Chaetomium globosum. 3 Biotech 2023; 13:379. [PMID: 37900266 PMCID: PMC10600081 DOI: 10.1007/s13205-023-03794-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/25/2023] [Indexed: 10/31/2023] Open
Abstract
Chaetomium globosum Kunze, an internationally recognized biocontrol fungus. It mycoparasitizes various plant pathogens and produce antifungal metabolites to suppress the growth of pathogenic fungi. Lack of detailed genome level diversity studies has delimited the development and utilization of potential C. globosum strains. The present study was taken to reveal the distribution, identification, and characterization of expressed sequence tag-simple sequence repeats (EST-SSRs) in C. globosum. RNA-Seq experiment was performed for C. globosum potential isolate Cg2 (AY429049) using Illumina HiSeq 2500. Reference-guided de novo assembly yielded 45,582 transcripts containing 27,957 unigenes. We generated a new set of 8485 EST-SSR markers distributed in 5908 unigene sequences with one SSR locus distribution density per 6.1 kb. Six distinct classes of SSR repeat motifs were identified. The most abundant were mononucleotide repeats (51.67%), followed by tri-nucleotides (36.61%). Out of 5034 EST-SSR primers, 50 primer pairs were selected and validated for the polymorphic study of 15 C. globosum isolates. Twenty-two SSR markers showed average genetic polymorphism among C. globosum isolates. The number of alleles (Na) per marker ranges from 2 to 4, with a total of 74 alleles detected for 22 markers with a mean polymorphism information content (PIC) value of 0.4. UPGMA hierarchical clustering analysis generated three main clusters of C. globosum isolates and exhibited a lower similarity index range from 0.59 to 0.85. Thus, the newly developed EST-SSR markers could replace traditional methods for determining diversity. The study will also enhance the genomic research in C. globosum to explore its biocontrol potential against phytopathogens. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03794-7.
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Affiliation(s)
- K. Darshan
- Division of Plant Pathology, Fungal Molecular Biology Laboratory, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
- Forest Protection Division, ICFRE-Tropical Forest Research Institute, Jabalpur, Madhya Pradesh 482021 India
| | - Rashmi Aggarwal
- Division of Plant Pathology, Fungal Molecular Biology Laboratory, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Bishnu Maya Bashyal
- Division of Plant Pathology, Fungal Molecular Biology Laboratory, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Jagmohan Singh
- Division of Plant Pathology, Fungal Molecular Biology Laboratory, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - M. S. Saharan
- Division of Plant Pathology, Fungal Molecular Biology Laboratory, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - M. S. Gurjar
- Division of Plant Pathology, Fungal Molecular Biology Laboratory, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Amolkumar U. Solanke
- ICAR-National Institute for Plant Biotechnology, ICAR-IARI, New Delhi, 110012 India
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Jiang C, Miao G, Li J, Zhang Z, Li J, Zhu S, Zhang J, Zhou X. Identification and Characterization of Two Novel Extracellular β-Glucanases from Chaetomium globosum against Fusarium sporotrichioides. Appl Biochem Biotechnol 2023:10.1007/s12010-023-04698-1. [PMID: 37642922 DOI: 10.1007/s12010-023-04698-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Chaetomium globosum can inhibit the growth of fusarium by means of their extracellular proteins. Two novel β-glucanases, designated Cgglu17A and Cgglu16B, were separated from the supernatant of C. globosum W7 and verified to have the ability to hydrolyze cell walls of Fusarium sporotrichioides MLS-19. Cgglu17A (397 amino acids) was classified as glycoside hydrolase family 17 while Cgglu16B belongs to the family16 (284 amino acids). Recombinant protein Cgglu17A was successfully expressed in Escherichia coli, and the enzymes were purified by affinity chromatography. Maximum activity of Cgglu17A appeared at the pH 5.5 and temperature 50 °C, but Cgglu16B shows the maximum activity at the pH 5.0 and temperature 50 °C. Most of heavy metal ions had inhibition effect on the two enzymes, but Cgglu17A and Cgglu16B were respectively activated by Ba2+ and Mn2+. Cgglu17A exhibited high substrate specificity, almost only catalyzing the cleavage of β-1,3-glycosidic bond, in various polysaccharose, to liberate glucose. However, Cgglu16B showed high catalytic activities to both β-1,3-glycosidic and β-1,3-1,4-glycosidic bonds. Cgglu17A was an exo-glucanase, but Cgglu16B was an endo-glucanase based on hydrolytic properties assay. Both of two enzymes showed potential antifungal activity, and the synergistic effect was observed in the germination experiment of pathogenic fungus. In conclusion, Cgglu17A (exo-1,3-β-glucanase) and Cgglu16B (endo-1,3(4)-β-glucanase) were confirmed to play a key role in the process of C. globosum controlling fusarium and have potential application value on industry and agriculture for the first time.
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Affiliation(s)
- Cheng Jiang
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China.
- Key Laboratory of Bioresource and Environmental Biotechnology of Anhui Higher Education Institutes, Huainan Normal University, Huainan, People's Republic of China.
- School of Biological Engineering & Institute of Digital Ecology and Health, Huainan Normal University, Huainan, People's Republic of China.
| | - Guopeng Miao
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
- Key Laboratory of Bioresource and Environmental Biotechnology of Anhui Higher Education Institutes, Huainan Normal University, Huainan, People's Republic of China
- School of Biological Engineering & Institute of Digital Ecology and Health, Huainan Normal University, Huainan, People's Republic of China
| | - Jialu Li
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
- Lanzhou Institute of Biological Products, Lanzhou, People's Republic of China
| | - Ziyu Zhang
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Jiamin Li
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Shuyan Zhu
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Jinhu Zhang
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Xingyu Zhou
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
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Gao ZJ, Cao LL, Ren HP, Yu H, Wang Y. Novel chlorinated and nitrogenated azaphilones with cytotoxic activities from the marine algal-derived fungus Chaetomium globosum 2020HZ23. Front Microbiol 2023; 14:1252563. [PMID: 37670992 PMCID: PMC10475718 DOI: 10.3389/fmicb.2023.1252563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 08/10/2023] [Indexed: 09/07/2023] Open
Abstract
Two novel chlorinated and nitrogenated azaphilones, namely N-butyl-2-aza-2-deoxychaetoviridin A (1) and N-hexyl-2-aza-2-deoxychaetoviridin A (2), along with a previously identified analogue, chaetoviridin A (3), were successfully obtained from Chaetomium globosum 2020HZ23, a marine algal-sourced endophytic fungus. The planar structures as well as the absolute configurations of these new metabolites were determined utilizing a synergistic approach that involved both spectroscopic techniques (1D/2D NMR and HRESIMS) and Density Functional Theory (DFT) calculations. Each compound was subject to in vitro cytotoxicity evaluation toward the A549 cancer cell line. Both compounds 1 and 2 demonstrated significant cytotoxicity, as evidenced by their respective IC50 values of 13.6 and 17.5 μM. Furthermore, 1 and 2 demonstrated potent cell migration inhibition, which elevated with increasing dose concentration. In contrast, compound 3 exhibited less cytotoxic activity relative to 1 and 2, suggesting that the cytotoxic potency escalates with N-substitution at the C-2 position and the introduction of a side chain. This finding could offer implications for future studies aimed at designing and refining lead compounds within this class.
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Affiliation(s)
| | | | | | - Hua Yu
- Qingdao Hiser Hospital Affiliated of Qingdao University (Qingdao Traditional Chinese Medicine Hospital), Qingdao, China
| | - Yan Wang
- Qingdao Hiser Hospital Affiliated of Qingdao University (Qingdao Traditional Chinese Medicine Hospital), Qingdao, China
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Kamat S, Kumari M, Sajna KV, Singh SK, Kumar A, Jayabaskaran C. Improved Chrysin Production by a Combination of Fermentation Factors and Elicitation from Chaetomium globosum. Microorganisms 2023; 11:microorganisms11040999. [PMID: 37110422 PMCID: PMC10146793 DOI: 10.3390/microorganisms11040999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/26/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Flavonoids encompass a heterogeneous group of secondary metabolites with exceptional health benefits. Chrysin, a natural dihydroxyflavone, possesses numerous bioactive properties, such as anticancer, antioxidative, antidiabetic, anti-inflammatory, etc. However, using traditional sources of chrysin involves extracting honey from plants, which is non-scalable, unsustainable, and depends on several factors, including geography, climatic conditions, and the season, which limits its production at a larger scale. Recently, microbial production of desirable metabolites has garnered attention due to the cost-effectiveness, easy scale-up, sustainability, and low emission of waste. We previously reported for the first time the chrysin-producing marine endophytic fungus Chaetomium globosum, associated with a marine green alga. To extend our understanding of chrysin biosynthesis in C. globosum, in the present study, we have assessed the presence of flavonoid pathway intermediates in C. globosum extracts using LC-MS/MS. The presence of several key metabolites, such as dihydrokaempferol, chalcone, galangin, baicalein, chrysin, p-Coumaroyl-CoA, and p-Cinnamoyl-CoA, indicates the role of flavonoid biosynthesis machinery in the marine fungus. Further, we have aimed to enhance the production of chrysin with three different strategies: (1) optimizing the fermentation parameters, namely, growth medium, incubation time, pH, and temperature; (2) feeding key flavonoid pathway intermediates, i.e., phenylalanine and cinnamic acid; (3) elicitation with biotic elicitors, such as polysaccharide, yeast extract, and abiotic elicitors that include UV radiation, salinity, and metal stress. The combined effect of the optimized parameters resulted in a 97-fold increase in the chrysin yield, resulting in a fungal cell factory. This work reports the first approach for enhanced production of chrysin and can serve as a template for flavonoid production enhancement using marine endophytic fungi.
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Affiliation(s)
- Siya Kamat
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Madhuree Kumari
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Kuttuvan Valappil Sajna
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
- Celignis Biomass Analysis Laboratory, V94 7Y42 Limerick, Ireland
| | - Sandeep Kumar Singh
- Division of Microbiology, Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
| | - Ajay Kumar
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - C Jayabaskaran
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
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Yuan Y, Zu M, Zuo J, Li R, Yang L, Tao J. Chaetomium globosum D5 confers salinity tolerance on Paeonia lactiflora Pall. J Plant Physiol 2023; 280:153878. [PMID: 36493668 DOI: 10.1016/j.jplph.2022.153878] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/10/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
Plants will interact with beneficial endophytic fungi to increase resistance under environmental stress. Among these stresses, salt stress poses one of the major threats to plant growth worldwide. We have studied the response mechanism of Chaetomium globosum D5, a salt-tolerant fungus isolated from the roots of Paeonia lactiflora under salt stress, and its mechanism of action in helping P. lactiflora alleviate salt stress. In our study, high levels of salt inhibit growth, whereas low levels promote the growth of C. globosum D5, which resists salt stress by forming dense hyphae and producing more pigments, soluble proteins, and antioxidants. Under salt stress, growth and photosynthesis of P. lactiflora are inhibited, and they are subjected to osmotic stress, oxidative stress, and ionic stress. C. globosum D5 could help P. lactiflora promote growth and photosynthesis by increasing the uptake of nitrogen and phosphorus and increasing the accumulation of the carbon and photosynthetic pigments, help P. lactiflora alleviate osmotic stress by increasing the accumulation of proline, help P. lactiflora alleviate ion stress by reducing Na+ and increasing K+/Na+, Ca2+/Na+ and Mg2+/Na + ratios in P. lactiflora roots and leaves. In summary, joint action between P. lactiflora and C. globosum D5 is responsible for mitigating damage caused by P. lactiflora under salt stress. We first investigate the interaction between the fungus and P. lactiflora under salt stress, providing a theoretical basis for further investigations into the mechanisms of P. lactiflora's response to salt stress and its promotion in coastal areas.
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Affiliation(s)
- Yingdan Yuan
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center of Modern Production Technology of Grain Crops, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
| | - Mengting Zu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center of Modern Production Technology of Grain Crops, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
| | - Jiajia Zuo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center of Modern Production Technology of Grain Crops, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
| | - Runze Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center of Modern Production Technology of Grain Crops, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
| | - Liping Yang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center of Modern Production Technology of Grain Crops, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
| | - Jun Tao
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center of Modern Production Technology of Grain Crops, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China.
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11
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Demir T, Baris A, Sigirci S, Sigirci BB, Tanriverdi ES, Koramaz I. Infective endocarditis caused by Chaetomium globosum. Cardiovasc Pathol 2023; 62:107467. [PMID: 35970486 DOI: 10.1016/j.carpath.2022.107467] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/31/2022] [Accepted: 08/07/2022] [Indexed: 12/13/2022] Open
Abstract
Chaetomium globosum is a dematiaceous, filamentous fungus belonging to the large genus saprobic ascomycetes and is rarely involved in human infection. We present the case of a 25-year-old man undergoing tricuspid valve replacement due to recurrent prosthetic ring endocarditis. Initially, it was considered culture-negative endocarditis; however, the diagnosis of Chaetomium globosum could only be provided by DNA isolation of the mold isolate grown in culture and the valve tissue samples taken from the patient. This report describes the first documented tricuspid endocarditis caused by Chaetomium species and discusses the importance of molecular tools to enhance the diagnostic process in culture-negative endocarditis, especially for fastidious and nonculturable microorganisms.
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12
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Goué EL, Ham-Pichavant F, Grelier S, Remy J, Coma V. Functional Chitosan-Calcium Carbonate Coatings for Enhancing Water and Fungal Resistance of Paper Materials. Molecules 2022; 27:molecules27248886. [PMID: 36558019 PMCID: PMC9785779 DOI: 10.3390/molecules27248886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/16/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022]
Abstract
The objective of this study was to increase the water resistance of paper while providing fungal resistance using a bio-based coating made from chitosan. The water resistance was improved through the surface control of roughness using modified calcium carbonate particles. The higher the quantity of particles in the film-forming solution, the higher the surface hydrophobicity of the paper. The addition of particles was found to counterbalance the chitosan hydrophilicity through the control of the coatings' penetration in the paper bulk. As a consequence, the wetting time and liquid water resistance were enhanced. The antifungal activity of the film-forming solutions and coated paper was also investigated against the growth of Chaetomium globosum, which was selected as a model strain able to contaminate paper materials. The results reveal that the antifungal activity of chitosan was improved by a possible synergic effect with the bicarbonate ions from the mineral particles.
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Affiliation(s)
- Erwan Le Goué
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, 33600 Pessac, France
- Papeterie Zuber Rieder, rue Ernest Zuber, 25320 Boussières, France
| | - Frédérique Ham-Pichavant
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, 33600 Pessac, France
| | - Stéphane Grelier
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, 33600 Pessac, France
| | - Jordan Remy
- Papeterie Zuber Rieder, rue Ernest Zuber, 25320 Boussières, France
| | - Véronique Coma
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, 33600 Pessac, France
- Correspondence:
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13
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Zhao S, Zhang K, Lin C, Cheng M, Song J, Ru X, Wang Z, Wang W, Yang Q. Identification of a Novel Pleiotropic Transcriptional Regulator Involved in Sporulation and Secondary Metabolism Production in Chaetomium globosum. Int J Mol Sci 2022; 23:ijms232314849. [PMID: 36499180 PMCID: PMC9740612 DOI: 10.3390/ijms232314849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/13/2022] [Accepted: 11/16/2022] [Indexed: 12/03/2022] Open
Abstract
Chaetoglobosin A (CheA), a well-known macrocyclic alkaloid with prominently highly antimycotic, antiparasitic, and antitumor properties, is mainly produced by Chaetomium globosum. However, a limited understanding of the transcriptional regulation of CheA biosynthesis has hampered its application and commercialization in agriculture and biomedicine. Here, a comprehensive study of the CgXpp1 gene, which encodes a basic helix-loop-helix family regulator with a putative role in the regulation of fungal growth and CheA biosynthesis, was performed by employing CgXpp1-disruption and CgXpp1-complementation strategies in the biocontrol species C. globosum. The results suggest that the CgXpp1 gene could be an indirect negative regulator in CheA production. Interestingly, knockout of CgXpp1 considerably increased the transcription levels of key genes and related regulatory factors associated with the CheA biosynthetic. Disruption of CgXpp1 led to a significant reduction in spore production and attenuation of cell development, which was consistent with metabolome analysis results. Taken together, an in-depth analysis of pleiotropic regulation influenced by transcription factors could provide insights into the unexplored metabolic mechanisms associated with primary and secondary metabolite production.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Qian Yang
- Correspondence: ; Tel.: +86-451-8640-2652
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14
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Spinelli V, Brasili E, Sciubba F, Ceci A, Giampaoli O, Miccheli A, Pasqua G, Persiani AM. Biostimulant Effects of Chaetomium globosum and Minimedusa polyspora Culture Filtrates on Cichorium intybus Plant: Growth Performance and Metabolomic Traits. Front Plant Sci 2022; 13:879076. [PMID: 35646045 PMCID: PMC9134003 DOI: 10.3389/fpls.2022.879076] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/11/2022] [Indexed: 06/12/2023]
Abstract
In this study, we investigated the biostimulant effect of fungal culture filtrates obtained from Chaetomium globosum and Minimedusa polyspora on growth performance and metabolomic traits of chicory (Cichorium intybus) plants. For the first time, we showed that M. polyspora culture filtrate exerts a direct plant growth-promoting effect through an increase of biomass, both in shoots and roots, and of the leaf area. Conversely, no significant effect on morphological traits and biomass yield was observed in C. intybus plants treated with C. globosum culture filtrate. Based on 1H-NMR metabolomics data, differential metabolites and their related metabolic pathways were highlighted. The treatment with C. globosum and M. polyspora culture filtrates stimulated a common response in C. intybus roots involving the synthesis of 3-OH-butyrate through the decrease in the synthesis of fatty acids and sterols, as a mechanism balancing the NADPH/NADP+ ratio. The fungal culture filtrates differently triggered the phenylpropanoid pathway in C. intybus plants: C. globosum culture filtrate increased phenylalanine and chicoric acid in the roots, whereas M. polyspora culture filtrate stimulated an increase of 4-OH-benzoate. Chicoric acid, whose biosynthetic pathway in the chicory plant is putative and still not well known, is a very promising natural compound playing an important role in plant defense. On the contrary, benzoic acids serve as precursors for a wide variety of essential compounds playing crucial roles in plant fitness and defense response activation. To the best of our knowledge, this is the first study that shows the biostimulant effect of C. globosum and M. polyspora culture filtrates on C. intybus growth and metabolome, increasing the knowledge on fungal bioresources for the development of biostimulants.
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Affiliation(s)
- Veronica Spinelli
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Elisa Brasili
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Fabio Sciubba
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Andrea Ceci
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Ottavia Giampaoli
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Alfredo Miccheli
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Gabriella Pasqua
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Anna Maria Persiani
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
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15
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Zhang J, Islam MS, Wang J, Zhao Y, Dong W. Isolation of Potato Endophytes and Screening of Chaetomium globosum Antimicrobial Genes. Int J Mol Sci 2022; 23:ijms23094611. [PMID: 35563004 PMCID: PMC9099842 DOI: 10.3390/ijms23094611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/09/2022] [Accepted: 04/19/2022] [Indexed: 01/07/2023] Open
Abstract
Antimicrobial peptides (AMPs) have natural antibacterial activities that pathogens find difficult to overcome. As a result of this occurrence, AMPs can act as an important substitute against the microbial resistance. In this study, we used plate confrontation tests to screen out 20 potential endophytes from potato tubers. Among them, endophyte F5 was found to significantly inhibit the growth of five different pathogenic fungi. Following that, phylogenetic analysis revealed that the internal transcribed spacer (ITS) sequences were 99% identical to Chaetomium globosum corresponding sequences. Thereafter, the Bacillus subtilis expression system was used to create a C. globosum cDNA library in order to isolate the resistance genes. Using this approach, the resistance gene screening technology in the indicator bacteria built-in library was used to identify two antimicrobial peptides, CgR2150 and CgR3101, with broad-spectrum antibacterial activities. Furthermore, the results showed that CgR2150 and CgR3101 have excellent UV, thermal, and enzyme stabilities. Also, these two peptides can significantly inhibit the growth of various bacteria (Xanthomonas oryzae pv. oryzae, Xanthomonas oryzae pv. oryzicola, Clavibacter michiganensis, and Clavibacter fangii) and fungi (Fusarium graminearum, Rhizoctonia solani, and Botrytis cinerea). Scanning electron microscopy (SEM) observations revealed that CgR2150 and CgR3101 peptides act against bacteria by disrupting bacterial cell membranes. Moreover, hemolytic activity assay showed that neither of the two peptides exhibited significant hemolytic activity. To conclude, the antimicrobial peptides CgR2150 and CgR3101 are promising in the development of a new antibacterial agent and for application in plant production.
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Affiliation(s)
| | | | | | | | - Wubei Dong
- Correspondence: ; Tel.: +86-150-0710-9436
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16
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Xue YH, Li A, Li H, Liu C, Luo HJ, Liu CX, Chen JF, Zou K, Liu SP. Metabolite profiling reveals comprehensive effects of Chaetomium globosum on citrus preservation. Food Chem 2022; 369:130959. [PMID: 34469836 DOI: 10.1016/j.foodchem.2021.130959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 08/22/2021] [Accepted: 08/23/2021] [Indexed: 11/23/2022]
Abstract
The huge economic loss of citrus fruit after harvest called for safe and efficient preservatives, as chemically synthesized agents threatened the environment and human health. Herein a biocontrol fungus Chaetomium globosum QY-1 near the orchard in riparian area was identified to have antimicrobial, antioxidant and tyrosinase inhibition activity, which meets the requirements of an ideal preservative. Metabolite profiling based on bioassay-guided fractionation was carried out, and eight polyketones were determined by MS and NMR. The most abundant CheA exhibited strong inhibition to Penicillium digitatum, the main pathogen caused citrus fruit rot. Among these metabolites, Epicoccone and Epicoccolide B showed higher antioxidant activity, while Epicoccone and CheA had higher tyrosinase inhibitory activity. All the activities were close to or even better than the positive control (Vc; glutathione; Vc and arbutin; Bellkute), implying that the metabolites of C. globosum had comprehensive effects as natural preservatives.
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Hu HQ, Li YH, Fan ZW, Yan WL, He ZH, Zhong TH, Gai YB, Yang XW. Anti-HIV Compounds from the Deep-Sea-Derived Fungus Chaetomium globosum. Chem Biodivers 2021; 19:e202100804. [PMID: 34799976 DOI: 10.1002/cbdv.202100804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/19/2021] [Indexed: 11/11/2022]
Abstract
Chemical investigation on the deep-sea-derived fungus Chaetomium globosum led to the isolation of nine compounds. By extensive analyses of the 1D and 2D NMR as well as HR-ESI-MS spectra, their structures were elucidated as xylariol A (1), 1,3-dihydro-4,5,6-trihydroxy-7-methylisobenzofuran (2), epicoccone B (3), epicoccolide B (4), chaetoglobosin G (5), chaetoglobosin Fex (6), cochliodone A (7), cochliodone B (8), and chaetoviridin A (9), assorting as four phenolics (1-4), two cytochalosans (5-6), and three azaplilones (7-9). Compounds 1-3 were firstly reported from C. globosum. Under the concentrations of 20 μg/mL, 1, 2, and 3 exhibited potent in vitro anti-HIV activity with the inhibition rates of 70 %, 75 %, and 88 %, respectively.
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Affiliation(s)
- Hong-Qiang Hu
- The Emergency Department, Army 73rd Group Military Hospital, Chenggong Hospital, Xiamen University), Xiamen, 361003, China
| | - Yan-Hui Li
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, 110866, China.,Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Zuo-Wang Fan
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Wei-Li Yan
- The Emergency Department, Army 73rd Group Military Hospital, Chenggong Hospital, Xiamen University), Xiamen, 361003, China
| | - Zhi-Hui He
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Tian-Hua Zhong
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Ying-Bao Gai
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
| | - Xian-Wen Yang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen, 361005, China
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18
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Racchi I, Scaramuzza N, Hidalgo A, Cigarini M, Berni E. Sterilization of food packaging by UV-C irradiation: Is Aspergillus brasiliensis ATCC 16404 the best target microorganism for industrial bio-validations? Int J Food Microbiol 2021; 357:109383. [PMID: 34509931 DOI: 10.1016/j.ijfoodmicro.2021.109383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/23/2021] [Accepted: 09/03/2021] [Indexed: 11/21/2022]
Abstract
In food industries UV-C irradiation is used to achieve decontamination of some packaging devices, such as plastic caps or laminated foils, and of those smooth surfaces that can be directly irradiated. Since its effectiveness can be checked by microbial validation tests, some ascospore-forming molds (Aspergillus hiratsukae, Talaromyces bacillisporus, Aspergillus montevidensis, and Chaetomium globosum) were compared with one of the target microorganisms actually used in industrial bio-validations (Aspergillus brasiliensis ATCC 16404) to find the species most resistant to UV-C. Tests were carried out with an UV-C lamp (irradiance = 127 μW/cm2; emission peak = 253.7 nm) by inoculating HDPE caps with one or more layers of spores. Inactivation kinetics of each strain were studied and both the corresponding 1D-values and the number of Logarithmic Count Reductions (LCR) achieved were calculated. Our results showed the important role played by the type of inoculum (one or more layers) and by the differences in cell structure (thickness, presence of protective solutes, pigmentation, etc.) of the strains tested. With a single-layer inoculum, Chaetomium globosum showed the highest resistance to UV-C irradiation (1D-value = 100 s). With a multi-layer inoculum, Aspergillus brasiliensis ATCC 16404 was the most resistant fungus (1D-value = 188 s), even if it reached a number of logarithmic reductions that was higher than those of some ascospore-forming mycetes (Aspergillus montevidensis, Talaromyces bacillisporus) tested.
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Yan Y, Xiang B, Xie Q, Lin Y, Shen G, Hao X, Zhu X. A Putative C 2H 2 Transcription Factor CgTF6, Controlled by CgTF1, Negatively Regulates Chaetoglobosin A Biosynthesis in Chaetomium globosum. Front Fungal Biol 2021; 2:756104. [PMID: 37744158 PMCID: PMC10512409 DOI: 10.3389/ffunb.2021.756104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 09/22/2021] [Indexed: 09/26/2023]
Abstract
Gα signaling pathway as well as the global regulator LaeA were demonstrated to positively regulate the biosynthesis of chaetoglobosin A (ChA), a promising biotic pesticide produced by Chaetomium globosum. Recently, the regulatory function of Zn2Cys6 binuclear finger transcription factor CgcheR that lies within the ChA biosynthesis gene cluster has been confirmed. However, CgcheR was not merely a pathway specific regulator. In this study, we showed that the homologs gene of CgcheR (designated as Cgtf1) regulate ChA biosynthesis and sporulation in C. globosum NK102. More importantly, RNA-seq profiling demonstrated that 1,388 genes were significant differentially expressed as Cgtf1 deleted. Among them, a putative C2H2 transcription factor, named Cgtf6, showed the highest gene expression variation in zinc-binding proteins encoding genes as Cgtf1 deleted. qRT-PCR analysis confirmed that expression of Cgtf6 was significantly reduced in CgTF1 null mutants. Whereas, deletion of Cgtf6 resulted in the transcriptional activation and consequent increase in the expression of ChA biosynthesis gene cluster and ChA production in C. globosum. These data suggested that CgTF6 probably acted as an end product feedback effector, and interacted with CgTF1 to maintain a tolerable concentration of ChA for cell survival.
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Affiliation(s)
- Yu Yan
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Biyun Xiang
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Qiaohong Xie
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing, China
- Xiamen No. 1 High School of Fujian, Xiamen, China
| | - Yamin Lin
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing, China
- Shenzhen Senior High School Group, Shenzhen, China
| | - Guangya Shen
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Xiaoran Hao
- National Experimental Teaching Demonstrating Center, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Xudong Zhu
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing, China
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Singh J, Aggarwal R, Bashyal BM, Darshan K, Parmar P, Saharan MS, Hussain Z, Solanke AU. Transcriptome Reprogramming of Tomato Orchestrate the Hormone Signaling Network of Systemic Resistance Induced by Chaetomium globosum. Front Plant Sci 2021; 12:721193. [PMID: 34630468 PMCID: PMC8495223 DOI: 10.3389/fpls.2021.721193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 08/16/2021] [Indexed: 06/12/2023]
Abstract
Chaetomium globosum is a potential biological control agent effective against various plant pathogens. Several reports are available on the mycoparastism and antibiosis mechanisms of C. globosum against plant pathogenic fungi, whereas a few states induced resistance. The potential induced defense component of C. globosum (Cg-2) was evaluated against early blight disease of tomato (Solanum lycopersicum) and further, global RNA sequencing was performed to gain deep insight into its mechanism. The expression of marker genes of hormone signaling pathways, such as PR1, PiII, PS, PAL, Le4, and GluB were analyzed using real-time quantitative reverse transcription PCR (qRT-PCR) to determine the best time point for RNA sequencing. The transcriptome data revealed that 22,473 differentially expressed genes (DEGs) were expressed in tomato at 12 h post Cg-2 inoculation as compared with control plants and among these 922 DEGs had a fold change of -2 to +2 with p < 0.05. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that most of the DEGs were belonging to metabolic pathways, biosynthesis of secondary metabolites, plant-pathogen interaction, chlorophyll metabolism, and plant hormone signal transduction. Gene Ontology (GO) analysis revealed that DEGs were enriched mainly related to binding activity (GO:0005488), catalytic activity (GO:0003824), metabolic process (GO:0008152), cellular process (GO:0009987), response to stimulus (GO:0050896), biological regulation (GO:0065007), and transcription regulator activity (GO:0140110). The gene modulations in hormone signaling transduction, phenylpropanoid biosynthesis, and mitogen-activated protein kinases (MPK) signaling indicated the upregulation of genes in these pathways. The results revealed active participation of jasmonic acid (JA) and salicylic acid (SA) signaling transduction pathways which further indicated the involvement of induced systemic resistance (ISR) and systemic acquired resistance (SAR) in the systemic resistance induced by Cg-2 in tomato.
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Affiliation(s)
- Jagmohan Singh
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Rashmi Aggarwal
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Bishnu Maya Bashyal
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - K Darshan
- Forest Protection Division, IC FRE-Tropical Forest Research Institute, Jabalpur, India
| | - Pooja Parmar
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - M S Saharan
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Zakir Hussain
- Division of Vegetable Science, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Amolkumar U Solanke
- ICAR-National Institute for Plant Biotechnology, ICAR-IARI, New Delhi, India
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21
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Xiang B, Hao X, Xie Q, Shen G, Liu Y, Zhu X. Deletion of a Rare Fungal PKS CgPKS11 Promotes Chaetoglobosin A Biosynthesis, Yet Defers the Growth and Development of Chaetomium globosum. J Fungi (Basel) 2021; 7:jof7090750. [PMID: 34575788 PMCID: PMC8471558 DOI: 10.3390/jof7090750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/07/2021] [Accepted: 09/09/2021] [Indexed: 12/14/2022] Open
Abstract
We previously reported that chaetoglobosin A (ChA) exhibits a great potential in the biocontrol of nematodes and pathogenic fungi. To improve the production of ChA, a CRISPR-Cas9 system was created and applied for eliminating potential competitive polyketide products. One of the polyketide synthase encoding genes, Cgpks11, which is putatively involved in the biosynthesis of chaetoglocin A, was disrupted. Cgpks11 deletion led to the overexpression of the CgcheA gene cluster, which is responsible for ChA biosynthesis, and a 1.6-fold increase of ChA. Transcription of pks-1, a melanin PKS, was simultaneously upregulated. Conversely, the transcription of genes for chaetoglocin A biosynthesis, e.g., CHGG_10646 and CHGG_10649, were significantly downregulated. The deletion also led to growth retardation and seriously impaired ascospore development. This study found a novel regulatory means on the biosynthesis of ChA by CgPKS11. CgPKS11 affects chaetoglobosin A biosynthesis, growth, and development in Chaetomium globosum.
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Affiliation(s)
- Biyun Xiang
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing 100875, China; (B.X.); (Q.X.); (G.S.); (Y.L.)
| | - Xiaoran Hao
- National Experimental Teaching Demonstrating Center, College of Life Sciences, Beijing Normal University, Beijing 100875, China
- Correspondence: (X.H.); (X.Z.)
| | - Qiaohong Xie
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing 100875, China; (B.X.); (Q.X.); (G.S.); (Y.L.)
- Xiamen No.1 High School of Fujian, Xiamen 361000, China
| | - Guangya Shen
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing 100875, China; (B.X.); (Q.X.); (G.S.); (Y.L.)
| | - Yanjie Liu
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing 100875, China; (B.X.); (Q.X.); (G.S.); (Y.L.)
| | - Xudong Zhu
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing 100875, China; (B.X.); (Q.X.); (G.S.); (Y.L.)
- Correspondence: (X.H.); (X.Z.)
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Zhang XY, Tan XM, Yu M, Yang J, Sun BD, Qin JC, Guo LP, Ding G. Bioactive metabolites from the desert plant-associated endophytic fungus Chaetomium globosum (Chaetomiaceae). Phytochemistry 2021; 185:112701. [PMID: 33607578 DOI: 10.1016/j.phytochem.2021.112701] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 06/12/2023]
Abstract
Globosumin, an undescribed chromene-4,7(4aH)-dione-tetramic acid PKS-PKS-NRPS hybrid, and globosumone, an undescribed azaphilone, together with ten known metabolites, were isolated from the desert plant-associated endophytic fungus Chaetomium globosum (Chaetomiaceae). The planar structures and relative configurations of globosumin and globosumone were determined by high-resolution ESI-MS and NMR data, and the absolute configurations of these two metabolites were determined by electronic circular dichroism (ECD) and circular dichroism (CD) combined with time-dependent density functional theory (TDDFT)-based quantum-chemical calculations. Chaetoglobosin A displayed biological effects against the seedling growth of Arabidopsis thaliana (Brassicaceae) in a dose-dependent manner, and this compound also exhibited biological activity against two cancer cell lines, A549 and HepG2, with IC50 values of 6.82 ± 2.34 and 38.62 ± 7.44 μM, respectively.
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Affiliation(s)
- Xiao-Yan Zhang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China
| | - Xiang-Mei Tan
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China
| | - Meng Yu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China
| | - Jian Yang
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, People's Republic of China
| | - Bing-Da Sun
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100090, People's Republic of China
| | - Jian-Chun Qin
- College of Plant Sciences, Jilin University, Changchun, Jilin, 130062, People's Republic of China.
| | - Lan-Ping Guo
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, People's Republic of China.
| | - Gang Ding
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China.
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Vallières C, Alexander C, Avery SV. Potentiated inhibition of Trichoderma virens and other environmental fungi by new biocide combinations. Appl Microbiol Biotechnol 2021; 105:2867-2875. [PMID: 33738552 PMCID: PMC8007513 DOI: 10.1007/s00253-021-11211-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/06/2021] [Accepted: 02/28/2021] [Indexed: 12/04/2022]
Abstract
Abstract Fungi cause diverse, serious socio-economic problems, including biodeterioration of valuable products and materials that spawns a biocides industry worth ~$11 billion globally. To help combat environmental fungi that commonly colonise material products, this study tested the hypothesis that combination of an approved fungicide with diverse agents approved by the FDA (Food and Drug Administration) could reveal potent combinatorial activities with promise for fungicidal applications. The strategy to use approved compounds lowers potential development risks for any effective combinations. A high-throughput assay of 1280 FDA-approved compounds was conducted to find those that potentiate the effect of iodopropynyl-butyl-carbamate (IPBC) on the growth of Trichoderma virens; IPBC is one of the two most widely used Biocidal Products Regulations–approved fungicides. From this library, 34 compounds in combination with IPBC strongly inhibited fungal growth. Low-cost compounds that gave the most effective growth inhibition were tested against other environmental fungi that are standard biomarkers for resistance of synthetic materials to fungal colonisation. Trifluoperazine (TFZ) in combination with IPBC enhanced growth inhibition of three of the five test fungi. The antifungal hexetidine (HEX) potentiated IPBC action against two of the test organisms. Testable hypotheses on the mechanisms of these combinatorial actions are discussed. Neither IPBC + TFZ nor IPBC + HEX exhibited a combinatorial effect against mammalian cells. These combinations retained strong fungal growth inhibition properties after incorporation to a polymer matrix (alginate) with potential for fungicide delivery. The study reveals the potential of such approved compounds for novel combinatorial applications in the control of fungal environmental opportunists. Key points • Search with an approved fungicide to find new fungicidal synergies in drug libraries. • New combinations inhibit growth of key environmental fungi on different matrices. • The approach enables a more rapid response to demand for new biocides. Supplementary Information The online version contains supplementary material available at 10.1007/s00253-021-11211-3.
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Affiliation(s)
- Cindy Vallières
- School of Life Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Cameron Alexander
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Simon V Avery
- School of Life Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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Cheng L, Zheng X, Li Q, Wei MS, Chen CM, Zhu HC, Zeng CL, Hao XC, Zhang YH. Armochaetoglasins J and K: new cytochalasans from Chaetomium globosum. Nat Prod Res 2021; 36:3603-3609. [PMID: 33487054 DOI: 10.1080/14786419.2021.1872568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Two novel cytochalasans, armochaetoglasin J (1) and armochaetoglasin K (2), along with 14 known analogues (3-16) were isolated from Chaetomium globosum. Their structures were elucidated by HRESIMS, NMR spectroscopy, single-crystal X-ray crystallography, and ECD spectra. Armochaetoglasins J and K were found to be inactive against the HepG2, HT-29, K562, HL-60, and A549 cancer cell lines.
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Affiliation(s)
- Li Cheng
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Engineering Technology Center for Comprehensive Utilization of Medicinal Plants, College of Pharmacy, Hubei University of Medicine, Shiyan, People's Republic of China
| | - Xi Zheng
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Engineering Technology Center for Comprehensive Utilization of Medicinal Plants, College of Pharmacy, Hubei University of Medicine, Shiyan, People's Republic of China
| | - Qin Li
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Meng-Sha Wei
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Chun-Mei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Hu-Cheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Chang-Li Zeng
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, Jianghan University, Wuhan, People's Republic of China
| | - Xin-Cai Hao
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Engineering Technology Center for Comprehensive Utilization of Medicinal Plants, College of Pharmacy, Hubei University of Medicine, Shiyan, People's Republic of China
| | - Yong-Hui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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Darshan K, Aggarwal R, Bashyal BM, Singh J, Shanmugam V, Gurjar MS, Solanke AU. Transcriptome Profiling Provides Insights Into Potential Antagonistic Mechanisms Involved in Chaetomium globosum Against Bipolaris sorokiniana. Front Microbiol 2020; 11:578115. [PMID: 33365017 PMCID: PMC7750538 DOI: 10.3389/fmicb.2020.578115] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 10/30/2020] [Indexed: 11/13/2022] Open
Abstract
Chaetomium globosum Kunze is recognized as a potential biocontrol fungus against spot blotch of wheat caused by Bipolaris sorokiniana. Its molecular mechanism of biocontrol activity and the biosynthetic pathways involved have not been yet elucidated. Here, global transcriptome profiling of C. globosum strain Cg2 during interaction with B. sorokiniana isolate BS112 using RNA-seq was performed in order to gain insights into the potential mechanisms of antagonism. The Illumina HiSeq platform (2 × 150 bp) yielded an average of 20-22 million reads with 50-58% GC. De novo assembly generated 45,582 transcripts with 27,957 unigenes. Transcriptome analysis displayed distinct expression profiles in the interaction (Cg2-BS112), out of which 6,109 unique differentially expressed genes were present. The predominant transcripts classified as genes involved in "catalytic activity" constituted 45.06%, of which 10.02% were associated with "hydrolytic activity" (GO:0008152), and similarly, in the biological process, 29.18% of transcripts were involved in "metabolic activity" (GO:0004096 and GO:0006979). Heat map and cluster categorization suggested an increase in the expression levels of genes encoding secondary metabolites like polyketide synthase (GO:0009058), S-hydroxymethyl glutathione dehydrogenase (GO:0006069), terpene cyclase (EC 4.2.3.-), aminotran_1_2 domain-containing protein (GO:0009058), and other hydrolytic CAZYmes such as the glycosyl hydrolase (GH) family (GH 13, GH 2, GH 31, and GH 81; GO:0005975), cellulase domain-containing protein, chitinases, β-1, 3-glucanases (GO:0004565), glucan endo-1,3-beta-glucanase (GO:0052861), and proteases (GO:0004177). The obtained RNA-seq data were validated by RT-qPCR using 20 randomly chosen genes, showing consistency with the RNA-seq results. The present work is worldwide the first effort to unravel the biocontrol mechanism of C. globosum against B. sorokiniana. It generated a novel dataset for further studies and facilitated improvement of the gene annotation models in the C. globosum draft genome.
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Affiliation(s)
- K. Darshan
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Rashmi Aggarwal
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Bishnu Maya Bashyal
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Jagmohan Singh
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - V. Shanmugam
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Malkhan S. Gurjar
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
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Wang BY, Yang XQ, Hu M, Shi LJ, Yin HY, Wu YM, Yang YB, Zhou H, Ding ZT. Biotransformation of natural polyacetylene in red ginseng by Chaetomium globosum. J Ginseng Res 2020; 44:770-774. [PMID: 33192119 PMCID: PMC7655485 DOI: 10.1016/j.jgr.2019.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 05/27/2019] [Accepted: 06/28/2019] [Indexed: 12/03/2022] Open
Abstract
Background Fermentation has been shown to improve the biological properties of plants and herbs. Specifically, fermentation causes decomposition and/or biotransformation of active metabolites into high-value products. Polyacetylenes are a class of polyketides with a pleiotropic profile of bioactivity. Methods Column chromatography was used to isolate compounds, and extensive NMR experiments were used to determine their structures. The transformation of polyacetylene in red ginseng (RG) and the production of cazaldehyde B induced by the extract of RG were identified by TLC and HPLC analyses. Results A new metabolite was isolated from RG fermented by Chaetomium globosum, and this new metabolite can be obtained by the biotransformation of polyacetylene in RG. Panaxytriol was found to exhibit the highest antifungal activity against C. globosum compared with other major ingredients in RG. The fungus C. globosum cultured in RG extract can metabolize panaxytriol to Metabolite A to survive, with no antifungal activity against itself. Metabolites A and B showed obvious inhibition against NO production, with ratios of 42.75 ± 1.60 and 63.95 ± 1.45% at 50 μM, respectively. A higher inhibitory rate on NO production was observed for Metabolite B than for a positive drug. Conclusion Metabolite A is a rare example of natural polyacetylene biotransformation by microbial fermentation. This biotransformation only occurred in fermented RG. The extract of RG also stimulated the production of a new natural product, cazaldehyde B, from C. globosum. The lactone in Metabolite A can decrease the cytotoxicity, which was deemed to be the intrinsic activity of polyacetylene in ginseng.
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Affiliation(s)
- Bang-Yan Wang
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Xue-Qiong Yang
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Ming Hu
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Li-Jiao Shi
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Hai-Yue Yin
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Ya-Mei Wu
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Ya-Bin Yang
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Hao Zhou
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
| | - Zhong-Tao Ding
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, China
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Ningaraju S, Munawer U, Raghavendra VB, Balaji KS, Melappa G, Brindhadevi K, Pugazhendhi A. Chaetomium globosum extract mediated gold nanoparticle synthesis and potent anti-inflammatory activity. Anal Biochem 2020; 612:113970. [PMID: 32961250 DOI: 10.1016/j.ab.2020.113970] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/03/2020] [Accepted: 09/16/2020] [Indexed: 12/19/2022]
Abstract
Gold nanoparticles (AuNPs) are gaining a lot of attention in recent decades from researchers due to their unique optoelectronic properties and their significance in the field of biomedicine. Keeping this in view, our research work was designed to investigate gold nanoparticles obtained by using a fungal endophytic strain Chaetomium globosum, isolated from Vitex negundo which showed significant activity on enzyme inhibition. In the present study, the fungal isolate C. globosum was characterized using HPLC and LC-MS. A novel compound Catechin was matched with standard Catechin. Further, the endophyte C. globosum extract was utilized to synthesize gold nanoparticles (CgAuNPs) which was analysed by UV-visible spectroscopy. The CgAuNPs exhibited wine red color and the absorption peak appeared at 542 nm confirming the formation of the AuNPs. Further, Fourier Transmission Infrared Spectroscopy (FTIR) was performed to confirm the various functional groups present in mycosynthesized CgAuNPs. FTIR analysis demonstrated the presence of amines, flavonoids, as well as the presence of amide I linkage which possibly reduces Au+ to Au0. The synthesized CgAuNPs exhibited potential cytotoxicity against HeLa cells in a dose dependent manner. Further, CgAuNPs demonstrated significant anti-inflammatory activity. Overall, the present work provides insights into the design of nano delivery and may be applied for clinical studies in future.
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Affiliation(s)
- Sunayana Ningaraju
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, 560012, India
| | - Uzma Munawer
- Teresian Research Foundation, Teresian College, Siddarthanagar, Mysore, 570011, India
| | | | | | - Govindappa Melappa
- P.G. Department of Studies in Botany, Davangere University, Shivagangotri, Davanagere, India
| | - Kathirvel Brindhadevi
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam
| | - Arivalagan Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
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Salo JM, Kedves O, Mikkola R, Kredics L, Andersson MA, Kurnitski J, Salonen H. Detection of Chaetomium globosum, Ch. cochliodes and Ch. rectangulare during the Diversity Tracking of Mycotoxin-Producing Chaetomium-Like Isolates Obtained in Buildings in Finland. Toxins (Basel) 2020; 12:E443. [PMID: 32650391 DOI: 10.3390/toxins12070443] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/04/2020] [Accepted: 07/06/2020] [Indexed: 01/26/2023] Open
Abstract
The diversity of Chaetomium-like isolates in buildings in Finland is poorly documented. This paper describes a set of methods for rapid diversity tracking of 42 indoor Chaetomium-like isolates. These isolates were categorized based on their fluorescence emission, ascomatal hair morphology, responses in three bioassays and resistance/sensitivity to the wetting agent Genapol X-080. Thirty-nine toxigenic isolates were identified [Ch. globosum (n = 35), Ch. cochliodes (n = 2) and Ch. rectangulare (n = 2)]. These isolates were identified down to the species level by tef1α gene sequencing. The major toxic substances in the ethanol extracts of the Ch. globosum and Ch. cochliodes strains were chaetoglobosin, chaetoviridin A and C, chaetomugilin D and chaetomin, identified based on HPLC-UV and mass spectrometry data (MS and MS/MS). Ethanol extracts from pure Ch. globosum cultures exhibited a toxicological profile in the boar sperm motility inhibition assay (BSMI), sperm membrane integrity damage assay (SMID) and inhibition of cell proliferation (ICP) assay, similar to that exhibited by pure chaetoglobosin A. Overall, differences in fluorescence, morphology, toxicity profile, mycotoxin production and sensitivity to chemicals were consistent with those in tef1α sequencing results for species identification. The results indicate the presence of Ch. cochliodes and Ch. rectangulare in Finnish buildings, representing a new finding.
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Khan B, Yan W, Wei S, Wang Z, Zhao S, Cao L, Rajput NA, Ye Y. Nematicidal metabolites from endophytic fungus Chaetomium globosum YSC5. FEMS Microbiol Lett 2020; 366:5539527. [PMID: 31348496 DOI: 10.1093/femsle/fnz169] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/25/2019] [Indexed: 01/17/2023] Open
Abstract
Management of nematodes is a very hectic job due to a highly diverse group of organisms. To find lead compounds for new nematicide development, five metabolites (1-5) were isolated from the culture broth of Chaetomium globosum YSC5 and tested for nematicidal activities against the second stage juveniles (J2s) of Meloidogyne javanica. The results revealed that chaetoglobosin A (1), chaetoglobosin B (2) and flavipin (3) exhibited strong adverse effects (91.6, 83.8 and 87.4%, respectively) on J2 mortality at 200 μg/mL with LC50 values of 88.4, 107.7 and 99.2 μg/mL after 72 h, respectively, while 3-methoxyepicoccone (4) and 4,5,6-trihydroxy-7-methylphthalide (5) showed moderate effects (78.0 and 75.5%, respectively) with LC50 values of 124.0 and 131.6 μg/mL, respectively. Furthermore, in pot assay compounds 1 and 2 appeared to be promising metabolites at 200 μg/mL that significantly reduced nematode reproduction and showed a positive influence on plant growth. Our findings could be helpful for development of new potential bio-based pesticides for integrated management of plant-parasitic nematode.
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Affiliation(s)
- Babar Khan
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Wei Yan
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Shan Wei
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Zhiyang Wang
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Shuangshuang Zhao
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Lingling Cao
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Nasir Ahmed Rajput
- Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan
| | - Yonghao Ye
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
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Luo XW, Gao CH, Lu HM, Wang JM, Su ZQ, Tao HM, Zhou XF, Yang B, Liu YH. HPLC-DAD-Guided Isolation of Diversified Chaetoglobosins from the Coral-Associated Fungus Chaetomium globosum C2F17. Molecules 2020; 25:E1237. [PMID: 32182966 DOI: 10.3390/molecules25051237] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 01/05/2023] Open
Abstract
Cytochalasans have continuously aroused considerable attention among the chemistry and pharmacology communities due to their structural complexities and pharmacological significances. Sixteen structurally diverse chaetoglobosins, 10-(indol-3-yl)-[13]cytochalasans, including a new one, 6-O-methyl-chaetoglobosin Q (1), were isolated from the coral-associated fungus Chaetomium globosum C2F17. Their structures were accomplished by extensive spectroscopic analysis combined with single-crystal X-ray crystallography and ECD calculations. Meanwhile, the structures and absolute configurations of the previously reported compounds 6, 12, and 13 were confirmed by single-crystal X-ray analysis for the first time. Chaetoglobosins E (6) and Fex (11) showed significant cytotoxicity against a panel of cancer cell lines, K562, A549, Huh7, H1975, MCF-7, U937, BGC823, HL60, Hela, and MOLT-4, with the IC50 values ranging from 1.4 μM to 9.2 μM.
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31
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Wang BY, Zhu CH, Yang XQ, Hu M, Xu TT, Wang XY, Yang S, Yang YB, Ding ZT. Inducing Intermediates in Biotransformation of Natural Polyacetylene and A Novel Spiro-γ-Lactone from Red Ginseng by Solid Co-Culture of Two Gut Chaetomium globosum and The Potential Bioactivity Modification by Oxidative Metabolism. Molecules 2020; 25:E1216. [PMID: 32182681 PMCID: PMC7179436 DOI: 10.3390/molecules25051216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 11/16/2022] Open
Abstract
The ω-hydroxyl-panaxytriol (1) and ω-hydroxyl-dihydropanaxytriol (2)-are rare examples of polyacetylene metabolism by microbial transformation, and these new metabolites (1, 2) from fermented red ginseng (FRG) by solid co-culture induction of two Chaetomium globosum should be the intermediates of biotransformation of panaxylactone (metabolite A). The metabolic pathway of panaxylactone was also exhibited. The ingredients of red ginseng (RG) also induced the production of rare 6/5/5 tricyclic ring spiro-γ-lactone skeleton (3). The ω-hydroxylation of new intermediates (1, 2) decreases cytotoxicity and antifungal activity against C. globosum compared with that of its bioprecursor panaxytriol. Additionally, compounds 1 and 2 indicated obvious inhibition against nitric oxide (NO) production, with ratios of 44.80 ± 1.37 and 23.10 ± 1.00% at 50 μM. 1 has an equivalent inhibition of NO production compared with the positive drug. So, the microbial biotransformation that occurred in FRG fermented by gut C. globosum can change the original bioactivity of polyacetylene, which gave a basis about the metabolic modification of red ginseng by intestinal fungus fermentation.
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Affiliation(s)
| | | | | | | | | | | | | | - Ya-Bin Yang
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, 2st Cuihu North Road, Kunming 650091, China; (B.-Y.W.); (C.-H.Z.); (X.-Q.Y.); (M.H.); (T.-T.X.); (X.-Y.W.); (S.Y.)
| | - Zhong-Tao Ding
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, 2st Cuihu North Road, Kunming 650091, China; (B.-Y.W.); (C.-H.Z.); (X.-Q.Y.); (M.H.); (T.-T.X.); (X.-Y.W.); (S.Y.)
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Gherbawy YA, El-Dawy EGAE. Conventional detection and quantification real-time PCR of the pks-1 gene of Chaetomium globosum. J Basic Microbiol 2020; 60:407-414. [PMID: 32124471 DOI: 10.1002/jobm.201900672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/12/2020] [Accepted: 02/15/2020] [Indexed: 11/09/2022]
Abstract
Chaetomium globosum is known as a potential biocontrol indicator against various soil and seedborne pathogens. Precise data are necessary for population monitoring of C. globosum for its effective use in agriculture. A sequence-characterized amplified region marker has been applied for the detection of this biocontrol agent, which will help to detect C. globosum at the site of its application. Out of 17 isolates of C. globosum, only 8 isolates of C. globosum amplified a monomorphic band of 1,900 bp. C. globosum is known for producing chaetoglobosin A. The pks-1 gene is unique in C. globosum in that it is involved in chaetoglobosin A production, melanin formation, and sporulation. Real-time PCR of pks-1 was used to compare the expressions of the pks-1 gene and chaetoglobosin A biosynthesis and sporulation. It was found that the sporulation of C. globosum was associated with the levels of pks-1 gene expression; Cg2 isolate showed high expression of the pks-1 gene, 41.21%, and also produced a great number of spores and perithecia. The association between the pks-1 gene expression and chaetoglobosin A production was estimated. The Pks-1 gene was expressed by all C. globosum isolates except one isolate, C1, which is another species of Chaetomium. In addition, all C. globosum isolates produced chaetoglobosin A with different concentrations and did not express the same levels of pks-1. This finding may be a result of the solvent type used in the extraction.
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Affiliation(s)
- Youssuf A Gherbawy
- Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt
| | - Eman G A E El-Dawy
- Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt
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Song C, Ding G, Wu G, Yang J, Zhang M, Wang H, Wei D, Qin J, Guo L. Identification of a Unique Azaphilone Produced by Chaetomium globosum Isolated from Polygonatum sibiricum. Chem Biodivers 2020; 17:e1900744. [PMID: 32022970 DOI: 10.1002/cbdv.201900744] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 02/05/2020] [Indexed: 01/16/2023]
Abstract
A new azaphilone, chaephilone E, eight azaphilone derivatives, and three chaetoglobosins were isolated from endophytic fungi Chaetomium globosum. The structures of the compounds were elucidated by 1D and 2D NMR as well as HR-ESI-MS data, and the absolute configuration of chaephilone E was established on the basis of electronic circular dichroism and NOESY spectrum. The activity of chaephilone E was evaluated via the cytotoxic assay (human hepatoma cell lines HepG-2) and brine shrimp (Artemia salina) bioassay.
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Affiliation(s)
- Chenggang Song
- College of Plant Science, Jilin University, Changchun, 130062, P. R. China
| | - Gang Ding
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, P. R. China
| | - Gang Wu
- College of Plant Science, Jilin University, Changchun, 130062, P. R. China
| | - Jian Yang
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, P. R. China
| | - Mingzhe Zhang
- College of Plant Science, Jilin University, Changchun, 130062, P. R. China
| | - Haoyu Wang
- College of Plant Science, Jilin University, Changchun, 130062, P. R. China
| | - Dongsheng Wei
- Institute of Wood Science, Department of Biology, University of Hamburg, Leuschnerstrasse 91, 21031, Hamburg, Germany
| | - Jianchun Qin
- College of Plant Science, Jilin University, Changchun, 130062, P. R. China
| | - Lanping Guo
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, P. R. China
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Mesa-Sánchez I, Jolly-Frahija IT, Sánchez-González K, Pumarola-Batlle M, Cervera-Castellanos V, Ródenas S. Canine systemic mycosis associated with Chaetomium globosum in a dog. Aust Vet J 2020; 98:185-189. [PMID: 31971255 DOI: 10.1111/avj.12920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/26/2019] [Accepted: 01/06/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Disseminated mycoses other than aspergillosis are infrequently reported in dogs. CASE REPORT A 4-year-old female Labrador retriever was evaluated because of hyperthermia, cough and intermittent lameness. Computed tomography showed a soft tissue mass in the cranioventral mediastinum, severe left and central tracheobronchial lymphadenopathy, and moderate bilateral pleural effusion. Magnetic resonance imaging identified an irregular intra-axial well-defined contrast enhancing mass extending from the right frontal lobe to the right thalamus. Fungal culture yielded growth of Chaetomium globosum. CONCLUSION In this case, the authors report a systemic mycosis in a Labrador retriever caused by C. globosum. To the best of authors' knowledge, this is the first report of systemic disease by this species in veterinary medicine.
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Affiliation(s)
- I Mesa-Sánchez
- Department of Internal Medicine, Valencia Sur Veterinary Hospital, Valencia, Spain
| | - I T Jolly-Frahija
- Department of Internal Medicine, Valencia Sur Veterinary Hospital, Valencia, Spain
| | - K Sánchez-González
- Department of Internal Medicine, Valencia Sur Veterinary Hospital, Valencia, Spain
| | - M Pumarola-Batlle
- Department of Animal medicine and Surgery, Veterinary Faculty, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | | | - S Ródenas
- Department of Internal Medicine, Valencia Sur Veterinary Hospital, Valencia, Spain.,Department of Neurology, Animal BlueCare Hospital, Mijas Costa, Spain
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Qi J, Jiang L, Zhao P, Chen H, Jia X, Zhao L, Dai H, Hu J, Liu C, Shim SH, Xia X, Zhang L. Chaetoglobosins and azaphilones from Chaetomium globosum associated with Apostichopus japonicus. Appl Microbiol Biotechnol 2020; 104:1545-53. [PMID: 31897521 DOI: 10.1007/s00253-019-10308-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/29/2019] [Accepted: 12/08/2019] [Indexed: 01/01/2023]
Abstract
Increasing attention has recently been focused on complex symbiotic associations, for instance coral and its symbionts. Sea cucumber, harboring diverse fungi, has also attracted more and more attention for their functional diversity. Here, secondary metabolites produced by Chaetomium globosum associated with sea cucumber, Apostichopus japonicus, were investigated using gene mining with third-generation sequencing technology (PacBio SMRT). Nine compounds, including one new compound cytoglobosin X (1), were isolated from cultures of Chaetomium globosum. Compound 1 was identified based on NMR data, HRESIMS, and ECD, and the absolute configurations were identified as 3S, 4R, 7S, 8R, 9R, 16S, 19S, 20S, and 23S. In an antimicrobial assay, compound 4 showed moderate activity against Staphylococcus aureus and methicillin-resistant Staphylococcus aureus with MICs of 47.3 and 94.6 μM, respectively. Our results suggest that the microbiomes associated with sea cucumber could be an important resource for biodiversity and structural novelty, and the bioactive compounds may protect the host from pathogen microbial.
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Zhou CY, Piao XM, Yan MX, Wang YP. [Isolation,screening and identification of endophytic fungi and detection of its antifungal effects against Alternaria panax]. Zhongguo Zhong Yao Za Zhi 2019; 44:274-277. [PMID: 30989945 DOI: 10.19540/j.cnki.cjcmm.20181106.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
To obtain biocontrol fungus for Alternaria panax,the antifungal effects of one strain of endophytic fungi isolated from leaves of healthy ginseng were screened and evaluated by using dual-culture method,and the taxonomic assignment of the screened strain was identified based on the morphological characters and ITS sequence analysis. The results of dual-culture showed that one of the endophytes marked as FS-01 had good antifungal effects and the inhibitory rates of FS-01 strain to A. panax was( 60. 21±0. 12) %.The hyphae junction of the both strains,A. panax dissolved,broke and winded,while the hyphae of FS-01 strain remained normal. The inhibitory rates of non-sterilized FS-01 strain fermentation liqud was( 13. 94±0. 21) %. Strain FS-01 identified as Chaetomium globosum.
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Affiliation(s)
- Chun-Yuan Zhou
- Institute of Special Wild Economic Animals and Plants,Chinese Academy of Agricultural Sciences Changchun 130112,China
| | - Xiang-Min Piao
- Institute of Special Wild Economic Animals and Plants,Chinese Academy of Agricultural Sciences Changchun 130112,China
| | - Mei-Xia Yan
- Institute of Special Wild Economic Animals and Plants,Chinese Academy of Agricultural Sciences Changchun 130112,China
| | - Ying-Ping Wang
- Institute of Special Wild Economic Animals and Plants,Chinese Academy of Agricultural Sciences Changchun 130112,China
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Senthil Kumar V, Kumaresan S, Tamizh MM, Hairul Islam MI, Thirugnanasambantham K. Anticancer potential of NF-κB targeting apoptotic molecule "flavipin" isolated from endophytic Chaetomium globosum. Phytomedicine 2019; 61:152830. [PMID: 31048125 DOI: 10.1016/j.phymed.2019.152830] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 01/02/2019] [Accepted: 01/09/2019] [Indexed: 05/13/2023]
Abstract
BACKGROUND Anticancer compounds from natural sources have drawn attention due to their structural diversity and relatively lesser side effects. Endophytic fungi are one such natural resource from, which plethoras of anticancerous compounds have been isolated. PURPOSE The objective of the study was to isolate and characterize the bioactive metabolite from Chaetomium globosum that exhibits astonishing antiproliferative activity against cancerous cell lines. METHODS Flavipin was isolated by bioassay-guided fractionation and identified using FT-IR, EI-MS and NMR studies. MTT assay was used to determine the cytotoxicity. Fluorescent staining (AO/EB) and DNA fragmentation studies confirmed the occurrence of apoptosis. Real time PCR and Western blotting were used to analyze the expression of apoptosis related genes and its proteins, respectively. RESULTS Flavipin inhibited proliferation of A549, HT-29 and MCF-7 cancer cells in dose dependent manner with an IC50 concentration of 9.89 µg/ml, 18 µg/ml and 54 µg/ml, respectively, whereas it was comparatively less sensitive (IC50 = 78.89 µg/ml) against normal cell line (CCD-18Co). At IC50 concentration cancerous cells exhibited cell shrinkage and fragmentation of DNA, which indicated that flavipin induced apoptotic cell death. In treated cells there is an up-regulation of p53 gene and its associated protein, whereas reciprocal expression was observed in BCL-2 gene and its protein. Furthermore, western blotting results also showed down-regulation of NFκB. CONCLUSION This is the first report on the antiproliferative activity of flavipin isolated from endophytic C. globosum and also proposed that interaction of flavipin with NFкB could be a possible mechanism for this activity. Flavipin induced apoptosis at low concentrations in cancer cell lines (A549, HT-29) and exhibited itself as a potential anticancer agent.
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Affiliation(s)
- Venugopal Senthil Kumar
- Department of Plant Biology and Plant Biotechnology, Ramakrishna Mission Vivekananda College, Mylapore, Chennai, Tamil Nadu 600 004, India; Pondicherry Centre for Biological Science and Educational Trust, Jawahar Nagar, Pondicherry 605 005, India
| | - Subramanian Kumaresan
- Department of Plant Biology and Plant Biotechnology, Ramakrishna Mission Vivekananda College, Mylapore, Chennai, Tamil Nadu 600 004, India.
| | - Manoharan Muthu Tamizh
- Department of Chemistry, Siddha Central Research Institute, Central Council for Research in Siddha, Arumbakkam, Chennai 600 106, Tamil Nadu, India
| | - Mohamed Ibrahim Hairul Islam
- Pondicherry Centre for Biological Science and Educational Trust, Jawahar Nagar, Pondicherry 605 005, India; Biological Sciences Department, College of Science, King Faisal University, Hofuf 31982 Al Hassa, Saudi Arabia
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Sun C, Ge X, Mudassir S, Zhou L, Yu G, Che Q, Zhang G, Peng J, Gu Q, Zhu T, Li D. New Glutamine-Containing Azaphilone Alkaloids from Deep-Sea-Derived Fungus Chaetomium globosum HDN151398. Mar Drugs 2019; 17:E253. [PMID: 31035362 DOI: 10.3390/md17050253] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 04/18/2019] [Accepted: 04/25/2019] [Indexed: 12/16/2022] Open
Abstract
Three new azaphilone alkaloids containing glutamine residues, namely N-glutarylchaetoviridins A–C (1–3), together with two related compounds (4 and 5) were isolated from the extract of Chaetomium globosum HDN151398, a fungus isolated from a deep-sea sediment sample collected in South China Sea. Their structures were elucidated on the basis of extensive 1D and 2D NMR as well as HRESIMS spectroscopic data and chemical analysis. N-glutarylchaetoviridins A–C (1–3) represent the first class of chaetoviridins characterized by embedded glutamate residues. Amino acids incubation experiments produced five azaphilone laden different amino acids residues (6–10) which indicated that this method can enhanced the structural diversity of this strain by culturing with amino acids. Cytotoxicity of the isolated compounds were evaluated against a panel of human cancer cell lines.
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Tantapakul C, Promgool T, Kanokmedhakul K, Soytong K, Song J, Hadsadee S, Jungsuttiwong S, Kanokmedhakul S. Bioactive xanthoquinodins and epipolythiodioxopiperazines from Chaetomium globosum 7s-1, an endophytic fungus isolated from Rhapis cochinchinensis (Lour.) Mart. Nat Prod Res 2018; 34:494-502. [PMID: 30449167 DOI: 10.1080/14786419.2018.1489392] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A new xanthoquinodin B9 (1), together with two known xanthoquinodins, xanthoquinodin A1 (2) and xanthoquinodin A3 (3), three epipolythiodioxopiperazines, chetomin (4), chaetocochin C (5) and dethio-tetra(methylthio)chetomin (6), and four other compounds, chrysophanol (7), emodin (8), alatinone (9), and ergosterol (10) were isolated from the endophytic fungus Chaetomium globosum 7s-1, isolated from Rhapis cochinchinensis (Lour.) Mart. All isolated structures were established based on their spectroscopic data analyses. Compounds 1-6 showed antibacterial activity against Gram positive bacteria with MICs ranging from 0.02 pM to 10.81 µM. Compounds 1-6 also exhibited cytotoxicity against KB, MCF-7 and NCI-H187 cancer cell lines (IC50 0.04-18.40 µM). However, they were cytotoxic towards a normal cell line (Vero cell) with IC50 values ranging from 0.04 to 3.86 µM.
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Affiliation(s)
- Cholpisut Tantapakul
- Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Trinop Promgool
- Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Kwanjai Kanokmedhakul
- Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Kasem Soytong
- Department of Plant Production Technology, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Jiaojiao Song
- Department of Plant Production Technology, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Sarinya Hadsadee
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, Thailand
| | - Siriporn Jungsuttiwong
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, Thailand
| | - Somdej Kanokmedhakul
- Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Yan W, Cao LL, Zhang YY, Zhao R, Zhao SS, Khan B, Ye YH. New Metabolites from Endophytic Fungus Chaetomium globosum CDW7. Molecules 2018; 23:E2873. [PMID: 30400338 DOI: 10.3390/molecules23112873] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 10/26/2018] [Accepted: 11/01/2018] [Indexed: 12/15/2022] Open
Abstract
Five metabolites including two new ones, prochaetoviridin A (1) and chaetoindolin A (2), were isolated from the endophytic fungus Chaetomium globosum CDW7. Compounds 1 and 2 were characterized as an isocoumarin and an indole alkaloid derivative, respectively, with their structures elucidated by comprehensive spectroscopic analyses including high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), NMR, and circular dichroism (CD) comparison. Compounds 3–5 were identified as chaetoviridin A, chaetoglobosin R, and chaetoglobosin T, respectively. Chaetoviridin A (3) exhibited antifungal activity against Sclerotinia sclerotiorum with an EC50 value of 1.97 μg/mL. In vivo test showed that 3 displayed a protective efficacy of 64.3% against rape Sclerotinia rot at the dosage of 200 μg/mL, comparable to that of carbendazim (69.2%).
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Hu Y, Liu Y, Hao X, Wang D, Akhberdi O, Xiang B, Zhu X. Regulation of the Gα-cAMP/PKA signaling pathway in cellulose utilization of Chaetomium globosum. Microb Cell Fact 2018; 17:160. [PMID: 30309363 PMCID: PMC6182798 DOI: 10.1186/s12934-018-1008-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 10/03/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The canonical heterotrimeric G protein-cAMP/PKA pathway regulates numerous cellular processes in filamentous fungi. Chaetomium globosum, a saprophytic fungus, is known for producing many secondary metabolites, including cytotoxic chaetoglobosin A (ChA), as well as abundant cellulase and xylanase. RESULTS Here we report on the functional characterization of this signaling pathway in C. globosum. We blocked the pathway by knocking down the putative Gα-encoding gene gna1 (in the pG14 mutant). This led to impaired cellulase production and significantly decreased transcription of the major cellulase and xylanase genes. Almost all the glycohydrolase family genes involved in cellulose degradation were downregulated, including the major cellulase genes, cel7a, cel6a, egl1, and egl2. Importantly, the expression of transcription factors was also found to be regulated by gna1, especially Ace1, Clr1/2 and Hap2/3/5 complex. Additionally, carbon metabolic processes including the starch and sucrose metabolism pathway were substantially diminished, as evidenced by RNA-Seq profiling and quantitative reverse transcription (qRT)-PCR. Interestingly, these defects could be restored by simultaneous knockdown of the pkaR gene encoding the regulatory subunit of cAMP-dependent PKA (in the pGP6 mutant) or supplement of the cAMP analog, 8-Br-cAMP. Moreover, the Gα-cAMP/PKA pathway regulating cellulase production is modulated by environmental signals including carbon sources and light, in which VelB/VeA/LaeA complex and ENVOY probably work as downstream effectors. CONCLUSION These results revealed, for the first time, the positive role of the heterotrimeric Gα-cAMP/PKA pathway in the regulation of cellulase and xylanase utilization in C. globosum.
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Affiliation(s)
- Yang Hu
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yanjie Liu
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, Institute of Biochemistry and Biotechnology, School of Life Sciences, Beijing Normal University, No. 19, XinJieKouWai St., HaiDian District, Beijing, 100875, China
| | - Xiaoran Hao
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, Institute of Biochemistry and Biotechnology, School of Life Sciences, Beijing Normal University, No. 19, XinJieKouWai St., HaiDian District, Beijing, 100875, China
| | - Dan Wang
- National Key Program of Microbiology and Department of Microbiology, College of Life Sciences, Nankai University (DMNU), Tianjin, China
| | - Oren Akhberdi
- National Key Program of Microbiology and Department of Microbiology, College of Life Sciences, Nankai University (DMNU), Tianjin, China
| | - Biyun Xiang
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, Institute of Biochemistry and Biotechnology, School of Life Sciences, Beijing Normal University, No. 19, XinJieKouWai St., HaiDian District, Beijing, 100875, China
| | - Xudong Zhu
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, Institute of Biochemistry and Biotechnology, School of Life Sciences, Beijing Normal University, No. 19, XinJieKouWai St., HaiDian District, Beijing, 100875, China. .,National Key Program of Microbiology and Department of Microbiology, College of Life Sciences, Nankai University (DMNU), Tianjin, China.
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Zhai X, Luo D, Li X, Han T, Jia M, Kong Z, Ji J, Rahman K, Qin L, Zheng C. Endophyte Chaetomium globosum D38 Promotes Bioactive Constituents Accumulation and Root Production in Salvia miltiorrhiza. Front Microbiol 2018; 8:2694. [PMID: 29403449 PMCID: PMC5786870 DOI: 10.3389/fmicb.2017.02694] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 12/26/2017] [Indexed: 12/25/2022] Open
Abstract
Salvia miltiorrhiza is known for tanshinones and salvianolic acids, which have been shown to have a protective effect against ROS, especially for cardiovascular diseases and other various ailments of human organs. Due to the low yield of tanshinones and their analogs in S. miltiorrhiza, multiple stimulation strategies have been developed to improve tanshinones production in plant tissue cultures. Endophytic fungi have been reported to form different relationships with their host plants, including symbiotic, mutualistic, commensalistic, and parasitic interactions. Thus we take the assumption that endophytic fungi may be a potential microbial tool for secondary metabolism promotion in medicinal plants. We recently isolated Chaetomium globosum D38 from the roots of S. miltiorrhiza and our study aimed to examine the effects of this live endophytic fungus D38 and its elicitor on the accumulation of tanshinones in the hairy root cultures of S. miltiorrhiza. Our results revealed that C. globosum D38 mainly colonized in the intercellular gap of xylem parenchyma cells of S. miltiorrhiza hairy roots during the long term co-existence without any toxicity. Moreover, both of the live fungus and its mycelia extract could increase the production of tanshinones, especially for dihydrotanshinone I and cryptotanshinone. The effect of the mycelia extract was much stronger than that of the live fungus on tanshinones synthesis, which significantly increased the transcriptional activity of those key genes in tanshinone biosynthetic pathway. Furthermore, the live C. globosum D38 could also be made into biotic fertilizer used for S. miltiorrhiza seedlings culture, which not only significantly promoted the growth of the host plant, but also notably enhanced the accumulation of tanshinones and salvianolic acids. We thus speculated that, in the soil environment D38 could form bitrophic and mutual beneficial interactions with the host and enhance the plant growth and its secondary metabolism on the whole so as to have facilitative effects on both tanshinones and salvianolic acids accumulation. In conclusion, Chaetomium globosum D38 was a highly beneficial endophytic fungus for the growth and metabolism of S. miltiorrhiza.
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Affiliation(s)
- Xin Zhai
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Dong Luo
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Xiuqing Li
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Ting Han
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Min Jia
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Zhouyang Kong
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Jiachen Ji
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Khalid Rahman
- Faculty of Science, School of Biomolecular Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Luping Qin
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Chengjian Zheng
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai, China
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Wan D, Chen X, Zhu L, Wang FW, Kong GM, Cao GY, Shen L. [Chemical constituents of liquid culture of symbiotic Chaetomium globosum ML-4 of oyster and their in vitro antitumor activity]. Zhongguo Zhong Yao Za Zhi 2017; 42:4142-4149. [PMID: 29271152 DOI: 10.19540/j.cnki.cjcmm.20170905.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Indexed: 11/18/2022]
Abstract
Isolation and purification of chemical constituents of liquid culture of symbiotic Chaetomium globosum ML-4 of oyster was performed through silica gel column chromatography, gel filtration over Sephadex LH-20, preparative TLC and HPLC. Five compounds were obtained and their structures were determined as chaetoglobosin V(1), chaetoglobosin Vb(2), tyrosol(3), 5-methyluracil(4)and uracil(5), respectively, based on HR-MS and NMR data and comparison with literatures. In vitro cytotoxicity of compounds against human hepatocellular carcinoma cell line SMMC-7721 were measured byMTT method, and results showed that compound 1 could obviously inhibit the proliferation of SMMC-7721 cells with an IC₅₀ value of 60.5 mg•L⁻¹, while the IC₅₀ value of positive control cisplatin was 19.96 mg•L⁻¹. Further studies discovered that compound 1 could lead to G2 phase arrest in SMMC-7721 cells and induce SMMC-7721 cells apoptosis. The ratio of Bcl-2/Bax in SMMC-7721 cells was decreased. The expression of protein Caspases-3,-8,-9 was improved and the expression and phosphorylation level of Akt were reduced. Aforementioned results revealed that in vitro antitumor activity of compound 1 against SMMC-7721 cells were related to G2 phase cell cycle arrest and induced-apoptosis. The induced-apoptosis was involved in both the mitochondrial pathway and the death receptor pathway and connected with activity decline of PI3K/Akt signaling pathway.
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Affiliation(s)
- Dan Wan
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Xi Chen
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Li Zhu
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Feng-Wu Wang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Gui-Mei Kong
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Gui-Yun Cao
- Medical College, Yangzhou University, Yangzhou 225001, China
| | - Li Shen
- Medical College, Yangzhou University, Yangzhou 225001, China
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Awad NE, Kassem HA, Hamed MA, El-Feky AM, El-Naggar MAA. Hepatoprotective evaluation and isolation of the major secondary metabolites from the ethyl acetate extract of liquid culture filtrate of Chaetomium globosum. Biomed Pharmacother 2018; 97:174-80. [PMID: 29091863 DOI: 10.1016/j.biopha.2017.10.120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/11/2017] [Accepted: 10/21/2017] [Indexed: 01/11/2023] Open
Abstract
The aim of the present study was to evaluate the hepatoprotective activity of ethyl acetate extract of the liquid culture filtrate of Chaetomium globosum fungus (family Chaetomiaceae). Rats were intraperitoneally injected by CCl4 (0.5ml/kg) twice a week for six consecutive weeks. Treatment tacks (250mg/kg) place at the same time of CCl4 induction and with the same duration. The evaluation was done through determination of liver function indices; aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and total serum protein content. In addition, the oxidative stress markers; hepatic glutathione content (GSH), hepatic malondialdehyde (MDA), hepatic superoxide dismutase (SOD), and hepatic total protein were estimated. Moreover, the liver architectures were also examined. Isolation and identification of the main secondary metabolites were identified. Seven volatile compounds were identified from the plain chloroform fraction where, 1-Cyclopentyl-2,2-dimethyl-1-propanol (54.63%) was presented as the major compound. Eleven compounds were also identified from the fraction eluted by chloroform: methanol (85:15). 1,5,5-Trimethyl-6-methylene-1-cyclohexene (25.79%) and Norbornan-2-one (26.84%) are presented as the major compounds of this fraction. In conclusion, the extract recorded hepatoprotective effect by ameliorating the biochemical parameters under investigation. The liver histopathological pictures confirmed our results.
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Jiang C, Song J, Zhang J, Yang Q. New production process of the antifungal chaetoglobosin A using cornstalks. Braz J Microbiol 2017; 48:410-8. [PMID: 28223029 DOI: 10.1016/j.bjm.2016.11.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 11/02/2016] [Accepted: 11/28/2016] [Indexed: 11/25/2022] Open
Abstract
Chaetoglobosin A is an antibacterial compound produced by Chaetomium globosum, with potential application as a biopesticide and cancer treatment drug. The aim of this study was to evaluate the feasibility of utilizing cornstalks to produce chaetoglobosin A by C. globosum W7 in solid-batch fermentation and to determine an optimal method for purification of the products. The output of chaetoglobosin A from the cornstalks was 0.34 mg/g, and its content in the crude extract was 4.80%. Purification conditions were optimized to increase the content of chaetoglobosin A in the crude extract, including the extract solvent, temperature, and pH value. The optimum process conditions were found to be acetone as the extractant, under room temperature, and at a pH value of 13. Under these conditions, a production process of the antifungal chaetoglobosin A was established, and the content reached 19.17%. Through further verification, cornstalks could replace crops for the production of chaetoglobosin A using this new production process. Moreover, the purified products showed great inhibition against Rhizoctonia solani, with chaetoglobosin A confirmed as the main effective constituent (IC50 = 3.88 μg/mL). Collectively, these results demonstrate the feasibility of using cornstalks to synthesize chaetoglobosin A and that the production process established in this study was effective.
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Chen C, Wang J, Zhu H, Wang J, Xue Y, Wei G, Guo Y, Tan D, Zhang J, Yin C, Zhang Y. Chaephilones A and B, Two New Azaphilone Derivatives Isolated from Chaetomium globosum. Chem Biodivers 2017; 13:422-6. [PMID: 26938138 DOI: 10.1002/cbdv.201500117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 11/05/2015] [Indexed: 12/17/2022]
Abstract
Two new azaphilone derivatives, chaephilones A (1) and B (2), were isolated from the fungus Chaetomium globosum, together with four structurally related analogs 3 - 6. The structures of 1 and 2 were elucidated by comprehensive spectroscopic analyses including HR-ESI-MS and NMR. The known compounds were identified as chaetomugilin Q (3), chaetomugilin D (4), 11-epichaetomugilin A (5), and chaetomugilin S (6) by comparing their NMR data and optical rotation values with those reported. Compound 2 represents the first example of azaphilone with an open furan ring. Compounds 1 and 2 were evaluated for cytotoxic activities against five human cancer cell lines (HL-60, SMMC-7721, A-549, MCF-7, and SW480) by the MTS method.
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Affiliation(s)
- Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Jing Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Yongbo Xue
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Guangzheng Wei
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Yi Guo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Dongdong Tan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Jinwen Zhang
- Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Chunping Yin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
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Calvo AMDC, Docters A, Miranda MV, Saparrat MCN. The Use of Gamma Radiation for the Treatment of Cultural Heritage in the Argentine National Atomic Energy Commission: Past, Present, and Future. Top Curr Chem (Cham) 2017; 375:9. [PMID: 28044280 DOI: 10.1007/s41061-016-0087-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 11/18/2016] [Indexed: 10/20/2022]
Abstract
The use of gamma radiation for treating biodeteriorated cultural heritage on paper has been studied at the Comisión Nacional de Energía Atómica-CNEA (Argentina) since 2001. In order to preserve books, publications, and documents that have been attacked by insects or fungi, gamma radiation techniques have been used at CNEA. The activities include basic research as well as their applications in infected documents and papers currently used in libraries and archives. New papers were subjected to accelerated ageing in order to evaluate the effects of gamma radiation on their physical and mechanical properties. Current studies include resistance to radiation in two batches of highly cellulolytic fungi, associated with indoor environment. They are present in papers and adhesives used for conservation purposes at the Laboratory of Preventive Conservation and Restoration of Documents. A joint study has been started in CNEA with the National University of La Plata.
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Affiliation(s)
| | - Andrea Docters
- Comisión Nacional de Energía Atómica, Buenos Aires, Argentina
| | | | - Mario Carlos Nazareno Saparrat
- Instituto de Fisiología Vegetal (INFIVE), Universidad Nacional de La Plata (UNLP)-CCT-La Plata-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Diag. 113 y 61, CC 327, 1900, La Plata, Argentina
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Wanmolee W, Sornlake W, Rattanaphan N, Suwannarangsee S, Laosiripojana N, Champreda V. Biochemical characterization and synergism of cellulolytic enzyme system from Chaetomium globosum on rice straw saccharification. BMC Biotechnol 2016; 16:82. [PMID: 27871321 PMCID: PMC5117696 DOI: 10.1186/s12896-016-0312-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 11/01/2016] [Indexed: 12/16/2022] Open
Abstract
Background Efficient hydrolysis of lignocellulosic materials to sugars for conversion to biofuels and chemicals is a key step in biorefinery. Designing an active saccharifying enzyme system with synergy among their components is considered a promising approach. Results In this study, a lignocellulose-degrading enzyme system of Chaetomium globosum BCC5776 (CG-Cel) was characterized for its activity and proteomic profiles, and synergism with accessory enzymes. The highest cellulase productivity of 0.40 FPU/mL was found for CG-Cel under the optimized submerged fermentation conditions on 1% (w/v) EPFB (empty palm fruit bunch), 2% microcrystalline cellulose (Avicel®) and 1% soybean meal (SBM) at 30 °C, pH 5.8 for 6 d. CG-Cel worked optimally at 50–60 °C in an acidic pH range. Proteomics analysis by LC/MS/MS revealed a complex enzyme system composed of core cellulases and accessory hydrolytic/non-hydrolytic enzymes attacking plant biopolymers. A synergistic enzyme system comprising the CG-Cel, a β-glucosidase (Novozyme® 188) and a hemicellulase Accellerase® XY was optimized on saccharification of alkaline-pretreated rice straw by a mixture design approach. Applying a full cubic model, the optimal ratio of ternary enzyme mixture containing CG-Cel: Novozyme® 188: Accellerase® XY of 44.4:20.6:35.0 showed synergistic enhancement on reducing sugar yield with a glucose releasing efficiency of 256.4 mg/FPU, equivalent to a 2.9 times compared with that from CG-Cel alone. Conclusions The work showed an approach for developing an active synergistic enzyme system based on the newly characterized C. globosum for lignocellulose saccharification and modification in bio-industries. Electronic supplementary material The online version of this article (doi:10.1186/s12896-016-0312-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wanwitoo Wanmolee
- The Joint Graduate School for Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok, 10140, Thailand
| | - Warasirin Sornlake
- Enzyme Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Nakul Rattanaphan
- Bioprocess Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Surisa Suwannarangsee
- Enzyme Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Navadol Laosiripojana
- The Joint Graduate School for Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok, 10140, Thailand.,BIOTEC-JGSEE Integrative Biorefinery Laboratory, Innovation Cluster 2 Building, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Verawat Champreda
- Enzyme Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand. .,BIOTEC-JGSEE Integrative Biorefinery Laboratory, Innovation Cluster 2 Building, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand.
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Abdel-Azeem AM, Zaki SM, Khalil WF, Makhlouf NA, Farghaly LM. Anti-rheumatoid Activity of Secondary Metabolites Produced by Endophytic Chaetomium globosum. Front Microbiol 2016; 7:1477. [PMID: 27703452 PMCID: PMC5029229 DOI: 10.3389/fmicb.2016.01477] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 09/05/2016] [Indexed: 11/29/2022] Open
Abstract
The aim of the present study was to investigate the anti-rheumatoid activity of secondary metabolites produced by endophytic mycobiota in Egypt. A total of 27 endophytic fungi were isolated from 10 dominant medicinal plant host species in Wadi Tala, Saint Katherine Protectorate, arid Sinai, Egypt. Of those taxa, seven isolates of Chaetomium globosum (CG1–CG7), being the most frequent taxon, were recovered from seven different host plants and screened for production of active anti-inflammatory metabolites. Isolates were cultivated on half – strength potato dextrose broth for 21 days at 28°C on a rotatory shaker at 180 rpm, and extracted in ethyl acetate and methanol, respectively. The probable inhibitory effects of both extracts against an adjuvant induced arthritis (AIA) rat model were examined and compared with the effects of methotrexate (MTX) as a standard disease-modifying anti-rheumatoid drug. Disease activity and mobility scoring of AIA, histopathology and transmission electron microscopy (TEM) were used to evaluate probable inhibitory roles. A significant reduction (P < 0.05) in the severity of arthritis was observed in both the methanolic extract of CG6 (MCG6) and MTX treatment groups 6 days after treatment commenced. The average arthritis score of the MCG6 treatment group was (10.7 ± 0.82) compared to (13.8 ± 0.98) in the positive control group. The mobility score of the MCG6 treatment group (1.50 ± 0.55) was significantly lower than that of the positive control group (3.33 ± 0.82). In contrast, the ethyl acetate extract of CG6 (EACG6) treatment group showed no improvements in arthritis and mobility scores in AIA model rats. Histopathology and TEM findings confirmed the observation. Isolate CG6 was subjected to sequencing for confirmation of phenotypic identification. The internal transcribed spacer (ITS) 1–5.8 s – ITS2 rDNA sequences obtained were compared with those deposited in the GenBank Database and registered with accession number KC811080 in the NCBI Database. The present study revealed that the methanol extract of endophytic fungus C. globosum (KC811080) recovered from maidenhair fern has an inhibitory effect on inflammation, histopathology and morphological features of rheumatoid arthritis in an AIA rat model.
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Affiliation(s)
- Ahmed M Abdel-Azeem
- Botany Department, Faculty of Science, Suez Canal University Ismailia, Egypt
| | - Sherif M Zaki
- Microbiology Department, Faculty of Science, Ain Shams University Cairo, Egypt
| | - Waleed F Khalil
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University Ismailia, Egypt
| | - Noha A Makhlouf
- Histology Department, Faculty of Medicine, Ain Shams University Cairo, Egypt
| | - Lamiaa M Farghaly
- Histology Department, Faculty of Medicine, Suez Canal University Ismailia, Egypt
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Manai I, Miladi B, El Mselmi A, Smaali I, Ben Hassen A, Hamdi M, Bouallagui H. Industrial textile effluent decolourization in stirred and static batch cultures of a new fungal strain Chaetomium globosum IMA1 KJ472923. J Environ Manage 2016; 170:8-14. [PMID: 26775156 DOI: 10.1016/j.jenvman.2015.12.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 12/27/2015] [Accepted: 12/30/2015] [Indexed: 06/05/2023]
Abstract
The treatment of an industrial textile effluent (ITE) was investigated by using a mono-culture of a novel fungal strain Chaetomium globosum IMA1. This filamentous fungus was selected based on its capacity for dye removal via the biodegradation mechanism. The respirometric analysis showed that C. globosum IMA1 was resistant to an indigo concentration up to 700 mg equivalent COD/L. The decolourization of the ITE by C. globosum was performed in static and stirred batch systems. The better lignin peroxidase (LiP), laccase and the manganese peroxidase (MnP) productions were 829.9 U/L, 83 U/L and 247.8 U/L, respectively since 3-5 days under a stirred condition. Therefore, the chemical oxygen demand (COD) and colors (OD620) removal yields reached 88.4% and 99.8%, respectively. Fourier transforms infrared spectroscopy (FTIR) analysis of the treated effluent showed that the decolourization was due to the degradation and the transformation of dye molecules. However, spectrophotometric examination showed that the complete dye removal was through fungal adsorption (8%), followed by degradation (92%).
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Affiliation(s)
- Imène Manai
- Université de Carthage, Lab Eco Tech Micro, INSAT, Tunis, Tunisia
| | - Baligh Miladi
- Université de Carthage, Lab Eco Tech Micro, INSAT, Tunis, Tunisia; Laboratoire de Biologie Moléculaire, Ecole de Biologie Industrielle, Cergy, France
| | - Abdellatif El Mselmi
- Laboratoire de Biologie Moléculaire, Ecole de Biologie Industrielle, Cergy, France
| | - Issam Smaali
- Université de Carthage, Lab Prot & Bioact Mol Engn INSAT, Tunis, Tunisia
| | - Aida Ben Hassen
- Laboratoire de valorisation énergétique des déchets (LVED), CRTEn, Tunisia
| | - Moktar Hamdi
- Université de Carthage, Lab Eco Tech Micro, INSAT, Tunis, Tunisia
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