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Tlais AZA, Rantsiou K, Filannino P, Cocolin LS, Cavoski I, Gobbetti M, Di Cagno R. Ecological linkages between biotechnologically relevant autochthonous microorganisms and phenolic compounds in sugar apple fruit (Annona squamosa L.). Int J Food Microbiol 2023; 387:110057. [PMID: 36563533 DOI: 10.1016/j.ijfoodmicro.2022.110057] [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: 08/04/2022] [Revised: 11/18/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
Our study investigated the potential of Annona squamosa (L.) fruit as a reservoir of yeasts and lactic acid bacteria having biotechnological implications, and phenolics capable of modifying the ecology of microbial consortia. Only a single species of lactic acid bacteria (Enterococcus faecalis) was identified, while Annona fruit seemed to be a preferred niche for yeasts (Saccharomyces cerevisiae, Hanseniaspora uvarum), which were differentially distributed in the fruit. In order to identify ecological implications for inherent phenolics, the antimicrobial potential of water- and methanol/water-soluble extracts from peel and pulp was studied. Pulp extracts did not show any antimicrobial activity against the microbial indicators, while some Gram-positive bacteria (Staphylococcus aureus, Staphylococcus saprophyticus, Listeria monocytogenes, Bacillus megaterium) were susceptible to peel extracts. Among lactic acid bacteria used as indicators, only Lactococcus lactis and Weissella cibaria were inhibited. The chemical profiling of methanol/water-soluble phenolics from Annona peel reported a full panel of 41 phenolics, mainly procyanidins and catechin derivatives. The antimicrobial activity was associated to specific compounds (procyanidin dimer type B [isomer 1], rutin [isomer 2], catechin diglucopyranoside), in addition to unidentified catechin derivatives. E. faecalis, which was detected in the epiphytic microbiota, was well adapted to the phenolics from the peel. Peel phenolics had a growth-promoting effect toward the autochthonous yeasts S. cerevisiae and H. uvarum.
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Affiliation(s)
| | - Kalliopi Rantsiou
- Department of Agricultural, Forest, and Food Science, University of Turin, Grugliasco, Torino, Italy
| | - Pasquale Filannino
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, 70126 Bari, Italy.
| | - Luca Simone Cocolin
- Department of Agricultural, Forest, and Food Science, University of Turin, Grugliasco, Torino, Italy
| | - Ivana Cavoski
- CIHEAM-MAIB, Mediterranean Agronomic Institute of Bari, 70010 Valenzano, Bari, Italy
| | - Marco Gobbetti
- Faculty of Sciences and Technology, Libera Università di Bolzano, 39100 Bolzano, Italy
| | - Raffaella Di Cagno
- Faculty of Sciences and Technology, Libera Università di Bolzano, 39100 Bolzano, Italy
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Endophytic fungal communities and their biotechnological implications for agro-environmental sustainability. Folia Microbiol (Praha) 2022; 67:203-232. [PMID: 35122218 DOI: 10.1007/s12223-021-00939-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/07/2021] [Indexed: 02/05/2023]
Abstract
Endophytic fungal communities have attracted a great attention to chemists, ecologists, and microbiologists as a treasure trove of biological resource. Endophytic fungi play incredible roles in the ecosystem including abiotic and biotic stress tolerance, eco-adaptation, enhancing growth and development, and maintaining the health of their host. In recent times, endophytic fungi have drawn a special focus owing to their indispensable diversity, unique distribution, and unparalleled metabolic pathways. The endophytic fungal communities belong to three phyla, namely Mucoromycota, Basidiomycota, and Ascomycota with seven predominant classes Agaricomycetes, Dothideomycetes, Eurotiomycetes, Mortierellomycotina, Mucoromycotina, Saccharomycetes, and Sordariomycetes. In a review of a huge number of research finding, it was found that endophytic fungal communities of genera Aspergillus, Chaetomium, Fusarium, Gaeumannomyces, Metarhizium, Microsphaeropsis, Paecilomyces, Penicillium, Piriformospora, Talaromyces, Trichoderma, Verticillium, and Xylaria have been sorted out and well characterized for diverse biotechnological applications for future development. Furthermore, these communities are remarkable source of novel bioactive compounds with amazing biological activity for use in agriculture, food, and pharmaceutical industry. Endophytes are endowed with a broad range of structurally unique bioactive natural products, including alkaloids, benzopyranones, chinones, flavonoids, phenolic acids, and quinines. Subsequently, there is still an excellent opportunity to explore novel compounds from endophytic fungi among numerous plants inhabiting different niches. Furthermore, high-throughput sequencing could be a tool to study interaction between plants and endophytic fungi which may provide further opportunities to reveal unknown functions of endophytic fungal communities. The present review deals with the biodiversity of endophytic fungal communities and their biotechnological implications for agro-environmental sustainability.
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Beauveria bassiana Endophytic Strain as Plant Growth Promoter: The Case of the Grape Vine Vitis vinifera. J Fungi (Basel) 2021; 7:jof7020142. [PMID: 33669343 PMCID: PMC7920271 DOI: 10.3390/jof7020142] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/11/2021] [Accepted: 02/13/2021] [Indexed: 11/17/2022] Open
Abstract
The common grape vine, Vitis vinifera, is a widely known plant with commercial and pharmacological value. The plant hosts a variety of microorganisms known as endophytes that can live within the tissues of the plant for a considerable time period, or even their whole life cycle. The fungus Beauveria bassiana is a well-studied endophyte which can colonize a variety of plants in many ways and in different parts of the plant. In this study, we examined the effect of the endophytic fungus B. bassiana on the growth of V. vinifera. The results demonstrated not only a successful colonization of the endophyte, but also a noteworthy impact on the growth of the V. vinifera root without harming the plant in any way. The fungus was also re-isolated from the parts of the plant using inst bait method. Overall, the study demonstrates the capability of B. bassiana to colonize V. vinifera plants, adding to the already existing knowledge of its endophytic activity, and highlighting its beneficial impact on the root growth.
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Abd-Elghany AA, Mohamad EA. Ex-vivo transdermal delivery of Annona squamosa entrapped in niosomes by electroporation. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2020. [DOI: 10.1080/16878507.2020.1719329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Amr A. Abd-Elghany
- Radiology and Medical Imaging Department, College of Applied Medical Sciences, Prince Sattam Bin Abdul-Aziz University, Al-Kharj, Saudi Arabia
- Biophysics Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ebtesam A. Mohamad
- Biophysics Department, Faculty of Science, Cairo University, Giza, Egypt
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Tibpromma S, Hyde KD, Bhat JD, Mortimer PE, Xu J, Promputtha I, Doilom M, Yang JB, Tang AMC, Karunarathna SC. Identification of endophytic fungi from leaves of Pandanaceae based on their morphotypes and DNA sequence data from southern Thailand. MycoKeys 2018. [DOI: 10.3897/mycokeys.32.23670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The authors established the taxonomic status of endophytic fungi associated with leaves of Pandanaceae collected from southern Thailand. Morphotypes were initially identified based on their characteristics in culture and species level identification was done based on both morphological characteristics and phylogenetic analyses of DNA sequence data. Twenty-two isolates from healthy leaves were categorised into eight morphotypes. Appropriate universal primers were used to amplify specific gene regions and phylogenetic analyses were performed to identify these endophytes and established relationships with extant fungi. The authors identified both ascomycete and basidiomycete species, including one new genus, seven new species and nine known species. Morphological descriptions, colour plates and phylogenies are given for each taxon.
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Tibpromma S, Hyde KD, Bhat JD, Mortimer PE, Xu J, Promputtha I, Doilom M, Yang JB, Tang AMC, Karunarathna SC. Identification of endophytic fungi from leaves of Pandanaceae based on their morphotypes and DNA sequence data from southern Thailand. MycoKeys 2018; 33:25-67. [PMID: 30532625 PMCID: PMC6283267 DOI: 10.3897/mycokeys.33.23670] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 03/16/2018] [Indexed: 02/01/2023] Open
Abstract
The authors established the taxonomic status of endophytic fungi associated with leaves of Pandanaceae collected from southern Thailand. Morphotypes were initially identified based on their characteristics in culture and species level identification was done based on both morphological characteristics and phylogenetic analyses of DNA sequence data. Twenty-two isolates from healthy leaves were categorised into eight morphotypes. Appropriate universal primers were used to amplify specific gene regions and phylogenetic analyses were performed to identify these endophytes and established relationships with extant fungi. The authors identified both ascomycete and basidiomycete species, including one new genus, seven new species and nine known species. Morphological descriptions, colour plates and phylogenies are given for each taxon.
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Affiliation(s)
- Saowaluck Tibpromma
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, People’s Republic of China
- Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand
| | - Kevin D. Hyde
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, People’s Republic of China
- Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand
| | - Jayarama D. Bhat
- Formerly, Department of Botany, Goa University, Taleigão, Goa, India
- No. 128/1-J, Azad Housing Society, Curca, Goa Velha, India
| | - Peter E. Mortimer
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, People’s Republic of China
| | - Jianchu Xu
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, People’s Republic of China
| | - Itthayakorn Promputtha
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
- Environmental Science Research Centre, Faculty of Science, Chiang Mai University, 50200, Thailand
| | - Mingkwan Doilom
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, People’s Republic of China
- Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand
| | - Jun-Bo Yang
- Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China
| | - Alvin M. C. Tang
- Division of Applied Science, College of International Education, The Hong Kong Baptist University, Hong Kong SAR, China
| | - Samantha C. Karunarathna
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, People’s Republic of China
- Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand
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Singh G, Katoch A, Razak M, Kitchlu S, Goswami A, Katoch M. Bioactive and biocontrol potential of endophytic fungi associated with Brugmansia aurea Lagerh. FEMS Microbiol Lett 2017; 364:4157277. [DOI: 10.1093/femsle/fnx194] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 09/11/2017] [Indexed: 12/11/2022] Open
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Perera RH, Maharachchikumbura SSN, Jones EG, Bahkali AH, Elgorban AM, Liu JK, Liu ZY, Hyde KD. Delonicicola siamensegen. & sp. nov. (Delonicicolaceaefam. nov., Delonicicolales ord. nov.), a Saprobic Species fromDelonix regiaSeed Pods. CRYPTOGAMIE MYCOL 2017. [DOI: 10.7872/crym/v38.iss3.2017.321] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rekhani H. Perera
- Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou Province 550006, P.R. China
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Sajeewa S. N. Maharachchikumbura
- Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, PO Box 34, Al Khoud 123, Oman
| | - E.B. Gareth Jones
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box: 2455, Riyadh, 1145, Saudi Arabia
| | - Ali H. Bahkali
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box: 2455, Riyadh, 1145, Saudi Arabia
| | - Abdallah M. Elgorban
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box: 2455, Riyadh, 1145, Saudi Arabia
| | - Jian-Kui Liu
- Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou Province 550006, P.R. China
| | - Zuo-Yi Liu
- Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou Province 550006, P.R. China
| | - Kevin D. Hyde
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, China
- World Agroforestry Centre, East and Central Asia, 132 Lanhei Road, Kunming 650201, P.R. China
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Yao YQ, Lan F, Qiao YM, Wei JG, Huang RS, Li LB. Endophytic fungi harbored in the root of Sophora tonkinensis Gapnep: Diversity and biocontrol potential against phytopathogens. Microbiologyopen 2017; 6:e00437. [PMID: 28299913 PMCID: PMC5458465 DOI: 10.1002/mbo3.437] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 11/28/2016] [Accepted: 12/06/2016] [Indexed: 11/11/2022] Open
Abstract
This work, for the first time, investigated the diversity of endophytic fungi harbored in the xylem and phloem of the root of Sophora tonkinensis Gapnep from three geographic localities with emphasis on the influence of the tissue type and geographic locality on endophytic fungal communities and their potential as biocontrol agents against phytopathogens of Panax notoginseng. A total of 655 fungal strains representing 47 taxa were isolated. Forty-two taxa (89.4%) were identified but not five taxa (10.6%) according to morphology and molecular phylogenetics. Out of identifiable taxa, the majority of endophyte taxa were Ascomycota (76.6%), followed by Basidiomycota (8.5%) and Zygomycota (4.3%). The alpha-diversity indices indicated that the species diversity of endophytic fungal community harbored in the root of S. tonkinensis was very high. The colonization and species diversity of endophytic fungal communities were significantly influenced by the geographic locality but not tissue type. The geographic locality and tissue type had great effects on the species composition of endophytic fungal communities. Forty-seven respective strains were challenged by three fungal phytopathogens of P. notoginseng and six strains exhibited significant inhibitory activity. It was noteworthy that endophytic Rhexocercosporidium sp. and F. solani strongly inhibited pathogenic F. solani and other fungal phytopathogens of P. notoginseng.
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Affiliation(s)
- Yu Qun Yao
- College of AgricultureGuangxi UniversityNanningChina
- School of MedicineGuangxi University of Science and TechnologyLiuzhouChina
| | - Fang Lan
- College of AgricultureGuangxi UniversityNanningChina
| | - Yun Ming Qiao
- College of AgricultureGuangxi UniversityNanningChina
| | - Ji Guang Wei
- College of AgricultureGuangxi UniversityNanningChina
| | | | - Liang Bo Li
- College of AgricultureGuangxi UniversityNanningChina
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Chemogenomics driven discovery of endogenous polyketide anti-infective compounds from endosymbiotic Emericella variecolor CLB38 and their RNA secondary structure analysis. PLoS One 2017; 12:e0172848. [PMID: 28245269 PMCID: PMC5330499 DOI: 10.1371/journal.pone.0172848] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 02/10/2017] [Indexed: 11/19/2022] Open
Abstract
In the postgenomic era, a new strategy for chemical dereplication of polyketide anti-infective drugs requires novel genomics and chromatographic strategies. An endosymbiotic fungal strain CLB38 was isolated from the root tissue of Combretum latifolium Blume (Combretaceae) which was collected from the Western Ghats of India. The isolate CLB38 was then identified as Emericella variecolor by its characteristic stellate ascospores culture morphology and molecular analysis of ITS nuclear rDNA and intervening 5.8S rRNA gene sequence. ITS2 RNA secondary structure modeling clearly distinguished fungal endosymbiont E. variecolor CLB38 with other lifestyles in the same monophyletic clade. Ethyl acetate fraction of CLB38 explored a broad spectrum of antimicrobial activity against multidrug resistant pathogens. Biosynthetic PKS type-I gene and chromatographic approach afford two polyketide antimicrobial compounds which identified as evariquinone and isoindolones derivative emerimidine A. MIC of purified compounds against test microorganisms ranged between 3.12 μg/ml and 12.5 μg/ml. This research highlights the utility of E. variecolor CLB38 as an anticipate source for anti-infective polyketide metabolites evariquinone and emerimidine A to combat multidrug resistant microorganisms. Here we demonstrates a chemogenomics strategy via the feasibility of PKS type-I gene and chromatographic approach as a proficient method for the rapid prediction and discovery of new polyketides compounds from fungal endosymbionts.
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12
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Mishra VK, Passari AK, Leo VV, Singh BP. Molecular Diversity and Detection of Endophytic Fungi Based on Their Antimicrobial Biosynthetic Genes. Fungal Biol 2017. [DOI: 10.1007/978-3-319-34106-4_1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Rakshith D, Santosh P, Pradeep TP, Gurudatt DM, Baker S, Yashavantha Rao HC, Pasha A, Satish S. Application of Bioassay-Guided Fractionation Coupled with a Molecular Approach for the Dereplication of Antimicrobial Metabolites. Chromatographia 2016. [DOI: 10.1007/s10337-016-3188-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Mishra VK, Passari AK, Singh BP. In Vitro Antimycotic and Biosynthetic Potential of Fungal Endophytes Associated with Schima Wallichii. Fungal Biol 2016. [DOI: 10.1007/978-3-319-27312-9_16] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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15
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Rao HCY, Baker S, Rakshith D, Satish S. Molecular profiling and antimicrobial potential of endophytic Gliomastix polychroma CLB32 inhabiting Combretum latifolium Blume. Mycology 2015; 6:176-181. [PMID: 30151327 PMCID: PMC6106067 DOI: 10.1080/21501203.2015.1113207] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 10/22/2015] [Indexed: 10/29/2022] Open
Abstract
Fungal endophytes as a source of bioactive metabolites have led to the development of pharmaceutical products finding new applications. In a survey of endophytic fungal biodiversity, an antimicrobial endophytic strain CLB32 was isolated from the leaf of Combretum latifolium Blume (Combretaceae) from the Western Ghats of Southern India. CLB32 was then identified as Gliomastix polychroma (KR704576) by morphological and phylogenetic analysis based on internal transcribed spacer (ITS) nuclear rDNA and intervening 5.8S rRNA gene. CLB32 here constituted the first report on incidence of endophytic fungi from C. latifolium Blume. Ethyl acetate fraction of strain CLB32 was evaluated for antimicrobial activity by disc diffusion assay. Secondary metabolites produced effectively inhibited methicillin-resistant Staphylococcus aureus (18.33 ± 0.33 mm), Pseudomonas aeruginosa (14.66 ± 0.33 mm) and Candida albicans (14.00 ± 0.57 mm). Biosynthesis of these antimicrobial compounds was detected by analytical TLC-bioautography method as depicted by zone of inhibition on intensive the band. These findings suggest that G. polychroma CLB32, as a producer of natural antimicrobial drugs, could help to combat against multidrug-resistant infections and also provide baseline information for industrial applications.
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Affiliation(s)
- H C Yashavantha Rao
- Microbial Drugs Laboratory, Department of Studies in Microbiology, Manasagangotri, University of Mysore, Mysore570 006, Karnataka, India
| | - Syed Baker
- Microbial Drugs Laboratory, Department of Studies in Microbiology, Manasagangotri, University of Mysore, Mysore570 006, Karnataka, India
| | - Devaraju Rakshith
- Microbial Drugs Laboratory, Department of Studies in Microbiology, Manasagangotri, University of Mysore, Mysore570 006, Karnataka, India
| | - Sreedharamurthy Satish
- Microbial Drugs Laboratory, Department of Studies in Microbiology, Manasagangotri, University of Mysore, Mysore570 006, Karnataka, India.,Department of Plant Pathology, University of Georgia, Athens, GA30602, USA
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Liu S, Lu C, Shen Y. Two New Acorane-Type Sesquiterpenoids from Aschersonia sp. D20, an Endophytic Fungus of Annona squamosa. Chem Nat Compd 2015. [DOI: 10.1007/s10600-015-1436-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Genetic diversity and antimicrobial activity of endophytic Myrothecium spp. isolated from Calophyllum apetalum and Garcinia morella. Mol Biol Rep 2015; 42:1533-43. [PMID: 26409457 DOI: 10.1007/s11033-015-3884-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 06/06/2015] [Indexed: 02/02/2023]
Abstract
Calophyllum apetalum and Garcinia morella, medicinal plants are endemic to Western Ghats, Karnataka, India. Sixteen Myrothecium isolates were obtained from the tissues of bark and twigs of these plants. The purpose of this study was to explore the antimicrobial activity and genetic variability of the endophytic Myrothecium isolates. The antimicrobial activity as well as the genetic diversity of endophytic Myrothecium species was investigated through RAPD, ISSR and ITS sequence analysis. Myrothecium isolates were genotypically compared by RAPD and ISSR techniques, 510 and 189 reproducible polymorphic bands were obtained using 20 RAPD and ten ISSR primers respectively. The isolates grouped into four main clades and subgroups using unweighted pair group method with arithmetic mean cluster analysis. rDNA ITS sequence analysis presented better resolution for characterising the isolates of Myrothecium spp. The clustering patterns of the isolates were almost similar when compared with RAPD and ISSR dendograms. The results signify that RAPD, ISSR and ITS analysis can be employed to distinguish the genetic diversity of the Myrothecium species. The endophytic and pathogenic strains were compared by maximum parsimony, maximum likelihood and neighbour joining methods. One isolate (JX862206) amongst the 16 Myrothecium isolates exhibited potent antibacterial and as well as anti-Candida activity.
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Yashavantha Rao HC, Santosh P, Rakshith D, Satish S. Molecular characterization of an endophytic Phomopsisliquidambaris CBR-15 from Cryptolepis buchanani Roem. and impact of culture media on biosynthesis of antimicrobial metabolites. 3 Biotech 2015; 5:165-173. [PMID: 28324573 PMCID: PMC4362740 DOI: 10.1007/s13205-014-0204-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 02/18/2014] [Indexed: 11/26/2022] Open
Abstract
An endophytic fungus Phomopsis liquidambaris CBR-15, was isolated from Cryptolepis buchanani Roem. (Asclepiadaceae) and identified by its characteristic culture morphology and molecular analysis of the ITS region of rDNA and intervening 5.8S rRNA gene. The impact of different culture media on biosynthesis of antimicrobial metabolites was tested by disc diffusion assay. Polyketide synthase gene (PKS) of the endophytic fungus was investigated using three pairs of degenerate primers LC1-LC2c, LC3-LC5c and KS3-KS4c by PCR. TLC-bioautography method was employed to detect the antimicrobial metabolites. Antimicrobial metabolites fractionated with ethyl acetate extract showed significant antimicrobial activity against the test bacteria and fungi. Biosynthesis of antimicrobial metabolites was optimum as depicted by zone of inhibition from ethyl acetate extract cultured in potato dextrose broth. Strain CBR-15 was identified as Phomopsisliquidambaris and PKS genes of the fungus were amplified with LC3-LC5c and KS3-KS4c sets of degenerate primers. These findings suggest that endophytic P.liquidambaris CBR-15 harbor iterative type I fungal PKS gene domain which indicates the biosynthetic potential of endophytic fungi as producers of natural antimicrobial metabolites. The study also demonstrates the utilization and optimization of different culture media which best supports for the biosynthesis of the antimicrobial metabolites from P.liquidambaris.
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Affiliation(s)
- H C Yashavantha Rao
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, 570 006, Karnataka, India
| | - Parthasarathy Santosh
- Plant Biotechnology Division, Unit of Central Coffee Research Institute, Coffee Board, Manasagangotri, Mysore, 570 006, Karnataka, India
| | - Devaraju Rakshith
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, 570 006, Karnataka, India
| | - Sreedharamurthy Satish
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, 570 006, Karnataka, India.
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Zhang Q, Liu H, Sun G, Wilson IW, Wu J, Hoffman A, Cheng J, Qiu D. Baseline survey of root-associated microbes of Taxus chinensis (Pilger) Rehd. PLoS One 2015; 10:e0123026. [PMID: 25821956 PMCID: PMC4378922 DOI: 10.1371/journal.pone.0123026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 02/16/2015] [Indexed: 11/19/2022] Open
Abstract
Taxol (paclitaxel) a diterpenoid is one of the most effective anticancer drugs identified. Biosynthesis of taxol was considered restricted to the Taxus genera until Stierle et al. discovered that an endophytic fungus isolated from Taxus brevifolia could independently synthesize taxol. Little is known about the mechanism of taxol biosynthesis in microbes, but it has been speculated that its biosynthesis may differ from plants. The microbiome from the roots of Taxus chinensis have been extensively investigated with culture-dependent methods to identify taxol synthesizing microbes, but not using culture independent methods.,Using bar-coded high-throughput sequencing in combination with a metagenomics approach, we surveyed the microbial diversity and gene composition of the root-associated microbiomefrom Taxus chinensis (Pilger) Rehd. High-throughput amplicon sequencing revealed 187 fungal OTUs which is higher than any previously reported fungal number identified with the culture-dependent method, suggesting that T. chinensis roots harbor novel and diverse fungi. Some operational taxonomic units (OTU) identified were identical to reported microbe strains possessing the ability to synthesis taxol and several genes previously associated with taxol biosynthesis were identified through metagenomics analysis.
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Affiliation(s)
- Qian Zhang
- State Key Laboratory of Tree Genetics and Breeding, The Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Hongwei Liu
- State Key Laboratory of Tree Genetics and Breeding, The Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Guiling Sun
- Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Iain W. Wilson
- CSIRO Agriculture Flagship, Canberra ACT 2001, Australia
| | - Jianqiang Wu
- Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Angela Hoffman
- Department of Chemistry, University of Portland, OR 97203, United States of America
| | - Junwen Cheng
- Key Laboratory of Biological and Chemical Utilization of Forest Resources, Zhejiang forestry Academy, Hangzhou 310023, China
| | - Deyou Qiu
- State Key Laboratory of Tree Genetics and Breeding, The Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
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Abstract
The generic concept of Phyllosticta has undergone substantial changes since its establishment in 1818. The existence of conidia with a mucilaginous sheath and an apical appendage is synapomorphic for Phyllosticta species, which has been shown in recent molecular phylogenetic studies. Thus a natural classification of Phyllosticta species should emphasize above morphological characters. Many names in Phyllosticta, both published in the scientific literatures and in publically accessible databases, need updating. In China, more than 200 species names in Phyllosticta have been recorded, of which, 158 species names are reviewed here based on their morphological descriptions and molecular data. Only 20 species of Phyllosticta are accepted from China. Other records of Phyllosticta refer to Phoma (89 records), Asteromella (14 records), Boeremia (9 records), Phomopsis (7 records) and Microsphaeropsis (1 record), with 19 names of uncertain generic classification. This work demonstrates an urgent need for the re-assessment of records of Phyllosticta worldwide.
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Affiliation(s)
- Ke Zhang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing100101, P. R. China
| | - Roger G. Shivas
- Plant Pathology Herbarium, Biosecurity Queensland, Ecosciences Precinct, Dutton Park, QLD4102, Australia
| | - Lei Cai
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing100101, P. R. China
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Wu H, Yang HY, You XL, Li YH. Diversity of endophytic fungi from roots of Panax ginseng and their saponin yield capacities. SPRINGERPLUS 2013; 2:107. [PMID: 23543782 PMCID: PMC3610023 DOI: 10.1186/2193-1801-2-107] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 02/15/2013] [Indexed: 11/29/2022]
Abstract
Endophytes of medicinal plants have the capacity to synthesis same or similar active substances with their hosts. To investigate the diversity and capacity to produce saponins of endophytic fungi of Panax ginseng, thirty-eight strains of were isolated. Polymerase chain reaction (PCR) and sequencing were used to identify the isolates, and saponins concentrations in the cultures were measured. Agar diffusion method was used to test antimicrobial activity. High-performance liquid chromatography (HPLC) was used to analyze ginsenosides produced by representative strains. Nectria, Aspergillus, Fusarium, Verticillium, Engyodontium, Plectosphaerella, Penicillium, Cladosporium, and Ascomycete species were isolated. Overall, 18.4% of the isolates belonged to Nectria (Nectria haematococca), 13.2% belonged to Aspergillus, and 10.5% belonged to Penicillium. The highest concentration of triterpenoid saponin was 0.181 mg/ml (Pg27), followed by 0.144 mg/ml (Pg30 and Pg42-1). According to the results of the phylogenetic results, these isolates were species of Fusarium, Aspergillus and Verticillium, respectively. The culture filtrate of Pg30 exhibited its antibacterial activity Staphylococcus aureus. Pg 27 and Pg30 could excrete the substances to inhibit the growth of Rhizoctonia solani. Pg42-1 showed strong inhibition against Klebsiella pneumoniae. From HPLC results, the ginsenoside Rb2 was detected in both Pg27 and Pg30 cultures. The ginsenoside Rc was found in Pg42-1 cultures. In conclusion, thirty-eight endophytic fungal strains were isolated and Pg27 (Fusarium sp.) has a potential application value in saponins production.
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Affiliation(s)
- Hao Wu
- College of Life Sciences/Daqing Bio-tech Research Institute, Northeast Forestry University, Harbin, Heilongjiang Province 150040 China
| | - Hong-Yan Yang
- College of Life Sciences/Daqing Bio-tech Research Institute, Northeast Forestry University, Harbin, Heilongjiang Province 150040 China
| | - Xiang-Lin You
- College of Life Sciences/Daqing Bio-tech Research Institute, Northeast Forestry University, Harbin, Heilongjiang Province 150040 China
| | - Yu-Hua Li
- College of Life Sciences/Daqing Bio-tech Research Institute, Northeast Forestry University, Harbin, Heilongjiang Province 150040 China
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Rakshith D, Santosh P, Satish S. Isolation and characterization of antimicrobial metabolite producing endophytic Phomopsis sp. from Ficus pumila Linn. (Moraceae). ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.ijcas.2013.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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YUNIANTO PRASETYAWAN, ROSMALAWATI SYOFI, RACHMAWATI INDRA, PRIYONO SUWARSO WAHYUDI, SUMARYONO WAHONO. Isolation and Identification of Endophytic Fungi from Srikaya Plants (Annona squamosa) Having Potential Secondary Metabolites as Anti-Breast Cancer Activity. MICROBIOLOGY INDONESIA 2012. [DOI: 10.5454/mi.6.1.4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Wikee S, Udayanga D, Crous PW, Chukeatirote E, McKenzie EHC, Bahkali AH, Dai D, Hyde KD. Phyllosticta—an overview of current status of species recognition. FUNGAL DIVERS 2011. [DOI: 10.1007/s13225-011-0146-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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26
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Lin T, Lin X, Lu CH, Shen YM. Three New Triterpenes from Xylarialean sp. A45, an Endophytic Fungus from Annona squamosa L. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000220] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yuan ZL, Rao LB, Chen YC, Zhang CL, Wu YG. From pattern to process: species and functional diversity in fungal endophytes of Abies beshanzuensis. Fungal Biol 2010; 115:197-213. [PMID: 21354526 DOI: 10.1016/j.funbio.2010.11.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 11/20/2010] [Accepted: 11/22/2010] [Indexed: 10/18/2022]
Abstract
The biodiversity-functional relationship in fungal ecology was recently developed and debated, but has rarely been addressed in endophytes. In this study, an integrative culture system was designed to capture a rich fungal consortium from the conifer Abies beshanzuensis. Results indicate an impressive diversity of fungal lineages (a total of 84 taxa classified in Dikarya) and a relatively high proportion of hitherto unknown species (27.4%). The laccase gene was used as a functional marker due to its involvement in lignocellulose degradation. Remarkable diversity of laccase genes was found across a wide range of taxa, with at least 35 and 19 distinct sequences in ascomycetes and basidiomycetes respectively, were revealed. Many groups displayed variable ability to decompose needles. Furthermore, many ascomycetes, including three volatile-producing Muscodor species (Xylariaceae), showed the ability to inhibit pathogens. Notably, most laccase-producing species showed little or no antibiosis and vice versa. Clavicipitalean and ustilaginomycetous fungi, specifically toxic to insects, were inferred from taxonomic information. Intra-specific physiological variation in Pezicula sporulosa, a second dominant species, was clearly high. We conclude that a suite of defensive characteristics in endophytes contributes to improving host fitness under various stresses and that a diversity of laccase genes confers an ecological advantage in competition for nutrients. Intra-specific diversity may be of great ecological significance for ecotypic adaptation. These findings suggest a fair degree of functional complementarity rather than redundancy among endemic symbionts of natural plant populations.
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Affiliation(s)
- Zhi-Lin Yuan
- Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang, China.
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González V, Tello ML. The endophytic mycota associated with Vitis vinifera in central Spain. FUNGAL DIVERS 2010. [DOI: 10.1007/s13225-010-0073-x] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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