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Zhu H, Zeng W, Chen M, He D, Cheng X, Yu J, Liu Y, Wu Y, Yang D. Endophytic Fungal Diversity of Mangrove Ferns Acrostichum speciosum and A. aureum in China. PLANTS (BASEL, SWITZERLAND) 2024; 13:685. [PMID: 38475531 DOI: 10.3390/plants13050685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/09/2024] [Accepted: 01/09/2024] [Indexed: 03/14/2024]
Abstract
Microbial communities are an important component of mangrove ecosystems. In order to reveal the diversity of endophytic fungi in the mangrove ferns Acrostichum speciosum and A. aureum in China, the internal transcribed spacer (ITS) regions of endophytic fungi in four plant tissues (leaves, petioles, roots, and rhizomes) from three locations (Zhanjiang, Haikou, and Wenchang) were sequenced. The richness, species composition, and community similarity were analyzed. The main results are as follows: the dominant fungi in A. speciosum and A. aureum belonged to the phyla Ascomycota and Basidiomycota, accounting for more than 75% of the total identified fungi; in terms of species composition at the operational taxonomic unit (OTU) level, the endophytic fungi in A. aureum were more diverse than those in A. speciosum, and the endophytic fungi in rhizomes were more diverse than in other tissues. In Zhanjiang, both A. speciosum and A. aureum showed the richest diversity of endophytic fungi, both at the OTU classification level and in terms of species composition. Conversely, the richness of endophytic fungi in the samples of A. speciosum from Wenchang and Haikou is extremely low. The regional differences in dominant fungi increase with the degrading of taxonomic levels, and there were also significant differences in the number of unique fungi among different origins, with Zhanjiang samples having a larger number of unique fungi than the other locations. There were significant differences in the dominant fungi among different tissues, with Xylariales being the dominant fungi in rhizomes of A. speciosum and Hypocreales being the dominant fungi in the petioles, roots, and rhizomes of A. aureum. Overall, the community similarity of endophytic fungi among locations is moderately dissimilar (26-50%), while the similarity between tissues is moderately similar (51-75%). The low diversity of endophytic fungi could be one of the main reasons for the endangerment of A. speciosum. The protection of the diversity of endophytic fungi in the underground parts of A. speciosum is essential for the conservation of this critically endangered mangrove fern.
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Affiliation(s)
- Hongjuan Zhu
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Wending Zeng
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Manman Chen
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Dan He
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Xialan Cheng
- School of Life Science and Technology, Lingnan Normal University, Zhanjiang 524048, China
| | - Jing Yu
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Ya Liu
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Yougen Wu
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Dongmei Yang
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
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Hassane AM, Taha TM, Awad MF, Mohamed H, Melebari M. Radical scavenging potency, HPLC profiling and phylogenetic analysis of endophytic fungi isolated from selected medicinal plants of saudi arabia. ELECTRON J BIOTECHN 2022. [DOI: 10.1016/j.ejbt.2022.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Marsola SJ, Jorge LF, Meniqueti AB, Bertéli MBD, de Lima TEF, Bezerra JL, Lopes AD, Gazim ZC, do Valle JS, Colauto NB, Linde GA. Endophytic fungi of Brunfelsia uniflora: isolation, cryopreservation, and determination of enzymatic and antioxidant activity. World J Microbiol Biotechnol 2022; 38:94. [PMID: 35441989 DOI: 10.1007/s11274-022-03278-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 03/31/2022] [Indexed: 01/08/2023]
Abstract
Brunfelsia uniflora (Pohl.) D. Don (Solanaceae), commonly known as manacá-de-cheiro, is widely distributed in Brazil and used by local indigenous peoples as an antirheumatic, antisyphilitic, depurative, emetic, vermifuge, and purgative agent. Several studies have examined the biological activities and phytochemical profile of Brunfelsia; however, few have focused on the diversity of endophytic microorganisms that colonize members of the genus. This study aimed to isolate and cryopreserve endophytic fungi from B. uniflora and determine their cellulase, laccase, and antioxidant activities. Endophytic fungi were isolated from B. uniflora stems, cultured on wheat grains, immersed in a 150 g L-1 aqueous sucrose solution, and cryopreserved at - 80 °C for 1 and 6 months. Cellulase activity was determined by a qualitative test using carboxymethylcellulose medium and laccase activity by a quantitative test based on the oxidation of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate). Prior to antioxidant activity assays, fungi were grown in malt extract broth for production of mycelial biomass. A methanolic extract was prepared for evaluation of DPPH· scavenging activity, FRAP activity, and total phenolic content. A total of 46 endophytic fungal isolates were obtained from B. uniflora stems and classified into 24 groups according to morphological similarities. B. uniflora was shown to harbor different genera of ascomycete fungi as endophytic organisms. Mycelial viability was observed after 1 and 6 months of cryopreservation at - 80 °C. Fungi exhibited cellulase and laccase activities. Isolate CE23 had the highest laccase activity after 7 days of cultivation. Twelve isolates were found to have low total phenolic contents and DPPH· and FRAP activities.
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Affiliation(s)
- Sara Jane Marsola
- Graduate Program of Biotechnology Applied to Agriculture, Universidade Paranaense, Umuarama, 87502-210, Brazil
| | - Lais Freitas Jorge
- Graduate Program of Biotechnology Applied to Agriculture, Universidade Paranaense, Umuarama, 87502-210, Brazil
| | - Adriano Borges Meniqueti
- Graduate Program of Biotechnology Applied to Agriculture, Universidade Paranaense, Umuarama, 87502-210, Brazil
| | | | | | - José Luiz Bezerra
- Universidade Federal do Recôncavo da Bahia, Cruz das Almas, 44380-00, Brazil
| | - Ana Daniela Lopes
- Graduate Program of Biotechnology Applied to Agriculture, Universidade Paranaense, Umuarama, 87502-210, Brazil.
| | - Zilda Cristiani Gazim
- Graduate Program of Biotechnology Applied to Agriculture, Universidade Paranaense, Umuarama, 87502-210, Brazil
| | - Juliana Silveira do Valle
- Graduate Program of Biotechnology Applied to Agriculture, Universidade Paranaense, Umuarama, 87502-210, Brazil
| | - Nelson Barros Colauto
- Graduate Program in Food Science - Faculty of Pharmacy, Federal University of Bahia, Ondina Campus, Salvador, 40110-115, Brazil
| | - Giani Andrea Linde
- Graduate Program in Food, Nutrition and Health - School of Nutrition, Federal University of Bahia, Canela Campus, Salvador, 40110-907, Brazil
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Bai M, Sen B, Wen S, Ye H, He Y, Zhang X, Wang G. Culturable Diversity of Thraustochytrids from Coastal Waters of Qingdao and Their Fatty Acids. Mar Drugs 2022; 20:229. [PMID: 35447902 PMCID: PMC9029807 DOI: 10.3390/md20040229] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 02/05/2023] Open
Abstract
Thraustochytrids have gained significant attention in recent years because of their considerable ecological and biotechnological importance. Yet, the influence of seasons and habitats on their culturable diversity and lipid profile remains poorly described. In this study, a total of 58 thraustochytrid strains were isolated from the coastal waters of Qingdao, China. These strains were phylogenetically close to five thraustochytrid genera, namely Botryochytrium, Oblongichytrium, Schizochytrium, Thraustochytrium, and Sicyoidochytrium. Most of the isolated strains were classified into the genera Thraustochytrium and Oblongichytrium. Further diversity analysis revealed that samples collected from nutrient-rich habitats and during summer/fall yielded significantly higher culturable diversity of thraustochytrids than those from low-nutrient habitats and winter/spring. Moreover, sampling habitats and seasons significantly impacted the fatty acid profiles of the strains. Particularly, the Oblongichytrium sp. OC931 strain produced a significant amount (153.99 mg/L) of eicosapentaenoic acid (EPA), accounting for 9.12% of the total fatty acids, which was significantly higher than that of the previously reported Aurantiochytrium strains. Overall, the results of this study fill the gap in our current understanding of the culturable diversity of thraustochytrids in the coastal waters and the impact of the sampling habitats and seasons on their capacity for lipid accumulation.
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Affiliation(s)
- Mohan Bai
- College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou 310058, China;
- Center for Marine Environmental Ecology, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; (B.S.); (S.W.); (H.Y.); (Y.H.)
| | - Biswarup Sen
- Center for Marine Environmental Ecology, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; (B.S.); (S.W.); (H.Y.); (Y.H.)
| | - Shuai Wen
- Center for Marine Environmental Ecology, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; (B.S.); (S.W.); (H.Y.); (Y.H.)
| | - Huike Ye
- Center for Marine Environmental Ecology, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; (B.S.); (S.W.); (H.Y.); (Y.H.)
| | - Yaodong He
- Center for Marine Environmental Ecology, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; (B.S.); (S.W.); (H.Y.); (Y.H.)
| | - Xiaobo Zhang
- College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou 310058, China;
| | - Guangyi Wang
- Center for Marine Environmental Ecology, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; (B.S.); (S.W.); (H.Y.); (Y.H.)
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Center for Biosafety Research and Strategy, Tianjin University, Tianjin 300072, China
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Raimi A, Adeleke R. Bioprospecting of endophytic microorganisms for bioactive compounds of therapeutic importance. Arch Microbiol 2021; 203:1917-1942. [PMID: 33677637 DOI: 10.1007/s00203-021-02256-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/27/2021] [Accepted: 02/18/2021] [Indexed: 01/09/2023]
Abstract
Presently, several drug discovery investigations on therapeutic management of human health are aimed at bioprospecting for microorganisms, especially endophytic microbes of biotechnological importance. This review investigates the benefits of endophytes, especially in producing bioactive compounds useful in modern medicine by systematically reviewing published data from 12 databases. Only experimental studies investigating either or both bacterial and fungal endophytes and within the scope of this review were selected. The published data from the last 2 decades (2000-2019) revealed diverse endophytes associated with different plants produce a broad spectrum of bioactive compounds with therapeutic benefits. Notably, antibacterial, followed by anticancer and antifungal activities, were mostly reported. Only three studies investigated the anti-plasmodial activity. The variation observed in the synthesis of bioactive compounds amongst endophytes varied with host type, endophyte species, and cultivation medium. Fungal endophytes were more investigated than bacterial endophytes, with both endophytes having species diversity amongst literature. The endophytes were predominantly from medicinal plants and belonged to either Ascomycota (fungi) or Proteobacteria and Firmicutes (bacteria). This review presents excellent prospects of harnessing endophytes and their unique bioactive compounds in developing novel and effective compounds of medicinal importance.
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Affiliation(s)
- Adekunle Raimi
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa
| | - Rasheed Adeleke
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa.
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Fungal Endophytes from Orchidaceae: Diversity and Applications. Fungal Biol 2021. [DOI: 10.1007/978-3-030-68260-6_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nguyen MH, Yong JH, Sung HJ, Lee JK. Screening of Endophytic Fungal Isolates Against Raffaelea quercus-mongolicae Causing Oak Wilt Disease in Korea. MYCOBIOLOGY 2020; 48:484-494. [PMID: 33312015 PMCID: PMC7717708 DOI: 10.1080/12298093.2020.1830486] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 06/12/2023]
Abstract
Oak wilt disease caused by Raffaelea quercus-mongolicae has emerged obviously in Korea. We selected antifungal isolates against R. quercus-mongolicae among 368 endophytic fungal isolates from different parts of oak and pine trees. The experiment was conducted in the primary and secondary screenings by dual culture test. The antifungal activity of the selected isolates was assessed in culture filtrate test based on the inhibition rates in mycelial growth, sporulation, and spore germination of oak wilt fungus. Five isolates, E089, E199, E282, E409 and E415, showed strong antifungal activity in culture filtrate test, and their antifungal activity decreased on the culture media supplemented with heated culture filtrate. Higher mycelial growth inhibitions on the unheated media were recorded in E409 (Colletotrichum acutatum), E089 (Daldinia childiae), E415 (Alternaria alternata) and E199 (Daldinia childiae) with the inhibition rates of 79.0%, 70.1%, 68.9% and 64.5%, respectively. These isolates also had the higher sporulation inhibitions on unheated media with the rates of 96.8%, 84.2%, 82.8% and 80.5%, respectively. The spore germination of the oak wilt fungus was completely inhibited by E282 (Nectria balsamea) on both unheated and heated media. These results showed that a higher number of potent antifungal isolates against oak wilt fungus was isolated from the petiole compared to the other parts. This study could contribute to the development of biological control approaches for the management of oak wilt disease caused by R. quercus-mongolicae.
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Affiliation(s)
- Manh Ha Nguyen
- Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, Korea
- Forest Protection Research Center, Vietnamese Academy of Forest Sciences, Hanoi, Vietnam
| | - Joo Hyun Yong
- Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, Korea
| | - Han Jung Sung
- Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, Korea
| | - Jong Kyu Lee
- Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, Korea
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Seasonal Variation Influence Endophytic Actinobacterial Communities of Medicinal Plants from Tropical Deciduous Forest of Meghalaya and Characterization of Their Plant Growth-Promoting Potentials. Curr Microbiol 2020; 77:1689-1698. [PMID: 32300926 DOI: 10.1007/s00284-020-01988-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 04/06/2020] [Indexed: 10/24/2022]
Abstract
The endophytic actinobacteria constitute a diverse community which has vast potential importance that may be exploited in pharmaceutical, agricultural, and biotechnological industries. However, the effects of seasonal changes on distribution of endophytic actinobacteria in medicinal plants of Meghalaya are largely uncharacterized. Here, we investigated host and seasonal influence on diversity of endophytic actinobacteria residing in roots of six medicinal plant species of Meghalaya. A total of 493 cultivable endophytic actinobacterial isolates representing 41 species were obtained from root segments of six plant species which had been collected during four different seasons of 2011-2012 and 2012-2013. Among the host plant species, maximum actinobacterial colonization was observed in Costus speciosus and minimum in Potentilla fulgens. In regard to seasons, the highest actinobacterial colonization and relative abundance were observed during summer season and least was recorded during the winter season. It was ascertained that though endophytic actinobacteria have varying capacity to colonize in different plant species during the seasons, colonization is not found to be species-specific. Culture-independent attempt also inferred that actinobacterial community varied amongst the six medicinal plants during the different seasons. Hence, seasons are influential factors in the colonization capacity of endophytic actinobacterial community. Furthermore, plant growth-promoting activities were recorded in 34.15% of the isolates. Hence, these results indicate that endophytic actinobacteria from the selected medicinal plants also represent an important source of plant growth-promoting bioactive metabolites.
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Diversity and antimicrobial activity of culturable fungi associated with sea anemone Anthopleura xanthogrammica. ELECTRON J BIOTECHN 2020. [DOI: 10.1016/j.ejbt.2020.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Endophytic Fungi from Terminalia Species: A Comprehensive Review. J Fungi (Basel) 2019; 5:jof5020043. [PMID: 31137730 PMCID: PMC6616413 DOI: 10.3390/jof5020043] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/21/2019] [Accepted: 05/23/2019] [Indexed: 12/21/2022] Open
Abstract
Endophytic fungi have proven their usefulness for drug discovery, as suggested by the structural complexity and chemical diversity of their secondary metabolites. The diversity and biological activities of endophytic fungi from the Terminalia species have been reported. Therefore, we set out to discuss the influence of seasons, locations, and even the plant species on the diversity of endophytic fungi, as well as their biological activities and secondary metabolites isolated from potent strains. Our investigation reveals that among the 200-250 Terminalia species reported, only thirteen species have been studied so far for their endophytic fungi content. Overall, more than 47 fungi genera have been reported from the Terminalia species, and metabolites produced by some of these fungi exhibited diverse biological activities including antimicrobial, antioxidant, antimalarial, anti-inflammatory, anti-hypercholesterolemic, anticancer, and biocontrol varieties. Moreover, more than 40 compounds with eighteen newly described secondary metabolites were reported; among these, metabolites are the well-known anticancer drugs, a group that includes taxol, antioxidant compounds, isopestacin, and pestacin. This summary of data illustrates the considerable diversity and biological potential of fungal endophytes of the Terminalia species and gives insight into important findings while paving the way for future investigations.
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Dissanayake AJ, Purahong W, Wubet T, Hyde KD, Zhang W, Xu H, Zhang G, Fu C, Liu M, Xing Q, Li X, Yan J. Direct comparison of culture-dependent and culture-independent molecular approaches reveal the diversity of fungal endophytic communities in stems of grapevine (Vitis vinifera). FUNGAL DIVERS 2018. [DOI: 10.1007/s13225-018-0399-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hagh-Doust N, Akbarinia M, Safaie N, Yousefzadeh H, Bálint M. Community analysis of Persian oak fungal microbiome under dust storm conditions. FUNGAL ECOL 2017. [DOI: 10.1016/j.funeco.2017.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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