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Chen Y, Liu H, Wang N, Tan H, Zhang W. Pararorine A, isoindolinone alkaloid from the endophytic fungus Paramyrothecium roridum and its anti-tumor activity. Fitoterapia 2024; 175:105931. [PMID: 38608733 DOI: 10.1016/j.fitote.2024.105931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/11/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024]
Abstract
Pararorine A, a new isoindolinone alkaloid was isolated from Paramyrothecium roridum, an endophytic fungus from the medicinal plant Gynochthodes officinalis (F.C. How) Razafim. & B. Bremer. The structure of this compound was elucidated by extensive spectroscopic (UV, IR, MS, and NMR) analyses. In addition, the antitumor activity of pararorine A was evaluated against SF-268, MCF-7, HepG2, and A549 tumor cell lines. The results revealed that pararorine A exhibited potent antitumor activities with the IC50 values ranging from 1.69 to 8.95 μM. Moreover, the tumor cell inhibitory activity of pararorine A was evidenced by promoting cytochrome C release and cell cycle arrest as well as the induction of apoptosis by the up-regulation of the protein expressions of JNK and Bax through PARP-cleavage and caspase 3-cleavage.
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Affiliation(s)
- Yuchan Chen
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Hongxin Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Nuoyi Wang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Haibo Tan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Weimin Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China.
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Rai S, Singh LS, Shaanker RU, Jeyaram K, Parija T, Sahoo D. Endophytic fungi of Panax sokpayensis produce bioactive ginsenoside Compound K in flask fermentation. Sci Rep 2024; 14:9318. [PMID: 38654024 DOI: 10.1038/s41598-024-56441-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 03/06/2024] [Indexed: 04/25/2024] Open
Abstract
Endophytes of Panax have the potential to produce their host plant secondary metabolites, ginsenosides. Panax sokpayensis, an endemic traditional medicinal plant of the Sikkim Himalayas was explored for the isolation of endophytic fungi. In the present study, we have isolated 35 endophytic fungal cultures from the rhizome of P. sokpayensis and screened for ginsenosides production by HPLC by comparing the peak retention time with that of standard ginsenosides. The HPLC analysis revealed that out of 35 isolates, the mycelial extracts of four fungal endophytes (PSRF52, PSRF53, PSRF49 and PSRF58) exhibited peaks with a similar retention time of the standard ginsenoside, Compound K (CK). LC-ESI-MS/MS analysis led to the confirmation of ginsenoside CK production by the four fungal endophytes which showed a compound with m/z 639.6278, similar to that of standard ginsenoside CK with yield in potato dextrose broth flask fermentation ranging from 0.0019 to 0.0386 mg/g of mycelial mass in dry weight basis. The four prospective fungal endophyte isolates were identified as Thermothielavioides terrestris PSRF52, Aspergillus sp. PSRF49, Rutstroemiaceae sp. strain PSRF53, and Phaeosphaeriaceae sp. strain PSRF58 based on ITS sequencing. The present finding highlights the need for further study on growth optimization and other culture parameters to exploit the endophytes as an alternative source for ginsenoside CK production.
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Affiliation(s)
- Subecha Rai
- Institute of Bioresources and Sustainable Development (IBSD), Sikkim Centre, DBT, Tadong, Gangtok, Sikkim, 737102, India
- School of Biotechnology, KIIT-Deemed to be University, Campus XI, Patia, Bhubaneshwar, Odisha, 751024, India
| | - Laishram Shantikumar Singh
- Institute of Bioresources and Sustainable Development (IBSD), Sikkim Centre, DBT, Tadong, Gangtok, Sikkim, 737102, India.
- Department of Microbiology, Assam Down Town University, Guwahati, Assam, 781026, India.
| | - Ramanan Uma Shaanker
- School of Ecology and Conservation, Department of Crop Physiology, University of Agricultural Sciences, GKVK, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Kumaraswamy Jeyaram
- Institute of Bioresources and Sustainable Development (IBSD), Sikkim Centre, DBT, Tadong, Gangtok, Sikkim, 737102, India
| | - Tithi Parija
- School of Biotechnology, KIIT-Deemed to be University, Campus XI, Patia, Bhubaneshwar, Odisha, 751024, India
| | - Dinabandhu Sahoo
- Institute of Bioresources and Sustainable Development (IBSD), Sikkim Centre, DBT, Tadong, Gangtok, Sikkim, 737102, India
- Department of Botany, University of Delhi, Delhi, 110007, India
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Sohaib H, Fays M, Khatib A, Rivière J, El Aouad N, Desoignies N. Contribution to the characterization of the seed endophyte microbiome of Argania spinosa across geographical locations in Central Morocco using metagenomic approaches. Front Microbiol 2024; 15:1310395. [PMID: 38601940 PMCID: PMC11005822 DOI: 10.3389/fmicb.2024.1310395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 03/08/2024] [Indexed: 04/12/2024] Open
Abstract
Microbial endophytes are microorganisms that live inside plants, and some of them play important yet understudied roles in plant health, growth, and adaptation to environmental conditions. Their diversity within plants has traditionally been underestimated due to the limitations of culture-dependent techniques. Metagenomic profiling provides a culture-independent approach to characterize entire microbial communities. The argan tree (Argania spinosa) is ecologically and economically important in Morocco, yet its seed endophyte microbiome remains unexplored. This study aimed to compare the bacterial and fungal endophyte communities associated with argan seeds collected from six sites across Morocco using Illumina MiSeq sequencing of the 16S rRNA gene and ITS regions, respectively. Bacterial DNA was extracted from surface-sterilized seeds and amplified using universal primers, while fungal DNA was isolated directly from seeds. Bioinformatics analysis of sequencing data identified taxonomic profiles at the phylum to genus levels. The results indicated that bacterial communities were dominated by the genus Rhodoligotrophos, while fungal communities exhibited varying degrees of dominance between Ascomycota and Basidiomycota depending on site, with Penicillium being the most abundant overall. Distinct site-specific profiles were observed, with Pseudomonas, Bacillus, and Aspergillus present across multiple locations. Alpha diversity indices revealed variation in endophyte richness between seed sources. In conclusion, this first exploration of the argan seed endophyte microbiome demonstrated environmental influence on community structure. While facing limitations due to small sample sizes and lack of ecological metadata, it provides a foundation for future mechanistic investigations into how specific endophyte-host interactions shape argan adaptation across Morocco's diverse landscapes.
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Affiliation(s)
- Hourfane Sohaib
- Laboratory of Life and Health Sciences, Faculty of Medicine and Pharmacy of Tangier, University Abdelmalek Essaâdi, Tetouan, Morocco
| | - Morgan Fays
- Phytopathology, Microbial and Molecular Farming Lab, Centre D’Etudes et Recherche Appliquée-Haute Ecole Provinciale du Hainaut Condorcet, Ath, Belgium
| | - Abderrezzak Khatib
- Laboratory of Life and Health Sciences, Faculty of Medicine and Pharmacy of Tangier, University Abdelmalek Essaâdi, Tetouan, Morocco
| | - John Rivière
- Laboratory of Biotechnology and Applied Biology, Haute Ecole Provinciale de Hainaut-Condorcet, Ath, Hainaut, Belgium
| | - Noureddine El Aouad
- Laboratory of Life and Health Sciences, Faculty of Medicine and Pharmacy of Tangier, University Abdelmalek Essaâdi, Tetouan, Morocco
| | - Nicolas Desoignies
- Phytopathology, Microbial and Molecular Farming Lab, Centre D’Etudes et Recherche Appliquée-Haute Ecole Provinciale du Hainaut Condorcet, Ath, Belgium
- University of Liege - Gembloux Agro-Bio Tech, TERRA - Teaching and Research Center, Plant Sciences Axis, Gembloux, Belgium
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Xu Y, Hu BY, Qin Y, Zhuang L, Yang YB, Zhao LX. Jiangchuanmycin, a New Pyrrolizidine Analog from Streptomyces sp. YIM S01863. Chem Biodivers 2023; 20:e202201240. [PMID: 36799244 DOI: 10.1002/cbdv.202201240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/18/2023]
Abstract
Jiangchuanmycin (1), a new indole containing pyrrolizidine, and six known peptides (2-7) were obtained from the fermentation broth of a Streptomyces isolate collected from a sediment sample of Xingyun Lake, Jiangchuan, China. Their structures were elucidated on the detailed analysis of the HR-ESI-MS, 1D and 2D NMR, ECD, and X-ray crystallographic data. Jiangchuanmycin (1) presented weak inhibitory effects on cell lines of H1299, MHCC97H, HCT116 with the IC50 values of 97.6 μM, 98.6 μM and 40.6 μM, respectively.
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Affiliation(s)
- Yuan Xu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650500, P. R. China
| | - Bin-Yuan Hu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650500, P. R. China
| | - Yan Qin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650500, P. R. China
| | - Lu Zhuang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650500, P. R. China
| | - Ya-Bin Yang
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Li-Xing Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650500, P. R. China
- Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, P. R. China
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Liu J, Yang T, Yuan YH, Hu JY, Lin LB, Yang ML, Duan DZ, Gong GW, Xiao J, Wang XL. Acrocalyenes A and B, Two New Diterpenoids from Sinomenium acutum Associated Fungus Acrocalymma sp. Chem Biodivers 2022; 19:e202100946. [PMID: 35253972 DOI: 10.1002/cbdv.202100946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 03/07/2022] [Indexed: 11/08/2022]
Abstract
We identified two new diterpenoidal acrocalyenes A (1) and B (2) through chemical investigation on Acrocalymma sp., a plant-associated fungus from the tender stem isolates of Sinomenium acutum collected from the Qinling Mountains, along with seven already-recognized compounds (3-9). The HR-ESI-TOF-MS and 1D/2D NMR data were utilized for structural elucidation of these compounds, and the single-crystal X-ray diffraction was employed for absolute configuration clarification of the novel acrocalyenes 1 and 2. Bioassays revealed that the cytotoxicities of compounds 2, 4, 6, 7, and 8 against three human carcinoma cells (RKO, HeLa and HCC-1806) were moderate to strong, with IC50 between 6.70-38.82 μM. These isolates were also evaluated for their fungal resistant potentials against Botrytis cinerea, Fusarium culmorum and Fusarium solani, in which 3 displayed significant inhibitory effects on all three phytopathogenic fungi, showing respective MIC of 50, 25 and 25 μM.
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Affiliation(s)
- Jie Liu
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Ting Yang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Ya-Hong Yuan
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Jia-Yao Hu
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Li-Bin Lin
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Mei-Li Yang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Dong-Zhu Duan
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Guo-Wei Gong
- Department of Bioengineering, Zunyi Medical University, Zhuhai Campus, Zhuhai, 519041, Guangdong, P. R. China
| | - Jian Xiao
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
| | - Xiao-Ling Wang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, Shaanxi, P. R. China
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AlSharari SS, Galal FH, Seufi AM. Composition and Diversity of the Culturable Endophytic Community of Six Stress-Tolerant Dessert Plants Grown in Stressful Soil in a Hot Dry Desert Region. J Fungi (Basel) 2022; 8:jof8030241. [PMID: 35330243 PMCID: PMC8948987 DOI: 10.3390/jof8030241] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/24/2022] [Accepted: 02/26/2022] [Indexed: 12/26/2022] Open
Abstract
Saudi Arabia is part of a hot dry desert region and is characterized by stressful conditions. The main goal of this research was to identify endophytic fungal (EF) community composition, diversity and abundance in relation to their plant hosts and soil stress. The above-ground parts of six wild plants (Haloxylon salicornicum, Salsola kali, Heliotropium bacciferum, Erica verticillata, Salsola imbricata and Bienertia sinuspersici) were sampled, surface-sterilized and cut into small pieces, which were cultured and incubated for 4–6 weeks. Isolates were grouped and identified by using both morphological and ITS rDNA molecular data. The diversity and community structure of plant-endophyte associations were studied. A total of 455 EF isolates were grouped into 25 different taxa; 21 of which were identified at the species level, 2 at genus level and 2 were unclassified fungi. Here, 95.65% of the identified genera were Ascomycota; of which 36.36, 31.81 and 31.81% were members of the classes Dothideomycetes, Eurotiomycetes and Sordariomycetes, respectively. S. imbricata showed the highest isolation rate and colonization frequency (CF%) of EF when compared to other plant species. Additionally, S. imbricata demonstrated the highest species richness and species diversity of the EF community predominated by the genus Fusarium. Conclusively, the core culturable EF genera of six wild plants were identified (unculturable taxa were not identified in this study). The composition of the EF community was revealed to have a strong correlation to both the electrical conductivity and pH of the soil and a moderate correlation to both the host species and the host family. The abundance and diversity of EF communities of the six plants were environment-dependent.
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Affiliation(s)
- Salam S. AlSharari
- Biology Department, College of Science, Jouf University, Sakaka P.O. Box 72341, Saudi Arabia;
- Correspondence: (S.S.A.); (A.M.S.)
| | - Fatma H. Galal
- Biology Department, College of Science, Jouf University, Sakaka P.O. Box 72341, Saudi Arabia;
- Department of Entomology, Faculty of Science, Cairo University, Giza P.O. Box 12613, Egypt
| | - AlaaEddeen M. Seufi
- Department of Entomology, Faculty of Science, Cairo University, Giza P.O. Box 12613, Egypt
- Correspondence: (S.S.A.); (A.M.S.)
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Goodwin PH. The Endosphere Microbiome of Ginseng. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11030415. [PMID: 35161395 PMCID: PMC8838582 DOI: 10.3390/plants11030415] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/27/2022] [Accepted: 01/30/2022] [Indexed: 05/14/2023]
Abstract
The endosphere of ginseng contains a variety of fungal, bacterial, archaeal and viral endophytes. Bacterial endophytes are primarily members of the Proteobacteria, Actinobacteria, Firmicutes and Bacteroidetes, and fungal endophytes are primarily members of the Ascomycota, Zygomycota and Basidiomycota. Although archaea and viruses have been detected in symptomless ginseng plants, little is known about them. Many but not all studies have shown roots having the highest abundance and diversity of bacterial and fungal endophytes, with some endophytes showing specificity to above or belowground tissues. Abundance often increases with root age, although diversity can decrease, possibly related to increases in potential latent fungal pathogen infections. The descriptions of many endophytes that can metabolize ginsenosides indicate an adaptation of the microbes to the unique combination of secondary metabolites found in ginseng tissues. Most research on the benefits provided by bacterial and fungal endophytes has concentrated on improved plant nutrition, growth promotion and increased disease resistance, but little on their ability to increase abiotic stress resistance. Some other areas where more research is needed is field trials with endophyte-treated plants grown in various environments, genomic/metagenomic analysis of endophytes, and the effects of endophytes on induced disease resistance and abiotic stress tolerance.
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Affiliation(s)
- Paul H Goodwin
- School of Environmental Sciences, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada
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