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Berikashvili V, Khardziani T, Kobakhidze A, Kulp M, Kuhtinskaja M, Lukk T, Gargano ML, Venturella G, Kachlishvili E, Metreveli E, Elisashvili VI, Asatiani M. Antifungal Activity of Medicinal Mushrooms and Optimization of Submerged Culture Conditions for Schizophyllum commune (Agaricomycetes). Int J Med Mushrooms 2023; 25:1-21. [PMID: 37830193 DOI: 10.1615/intjmedmushrooms.2023049836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
The main goal of the present study was the exploration of the antifungal properties of Agaricomycetes mushrooms. Among twenty-three tested mushrooms against A. niger, B. cinerea, F. oxysporum, and G. bidwellii, Schizophyllum commune demonstrated highest inhibition rates and showed 35.7%, 6.5%, 50.4%, and 66.0% of growth inhibition, respectively. To reveal culture conditions enhancing the antifungal potential of Sch. commune, several carbon (lignocellulosic substrates among them) and nitrogen sources and their optimal concentrations were investigated. Presence of 6% mandarin juice production waste (MJPW) and 6% of peptone in nutrient medium promoted antifungal activity of selected mushroom. It was determined that, extracts obtained in the presence of MJPW effectively inhibited the grow of pathogenic fungi. Moreover, the content of phenolic compounds in the extracts obtained from Sch. commune grown on MJPW was several times higher (0.87 ± 0.05 GAE/g to 2.38 ± 0.08 GAE/g) than the extracts obtained from the mushroom grown on the synthetic (glycerol contained) nutrient medium (0.21 ± 0.03 GAE/g to 0.88 ± 0.05 GAE/g). Flavonoid contents in the extracts from Sch. commune varied from 0.58 ± 0.03 to 27.2 ± 0.8 mg QE/g. Identification of phenolic compounds composition in water and ethanol extracts were provided by mass spectrometry analysis. Extracts demonstrate considerable free radical scavenging activities and the IC50 values were generally low for the extracts, ranging from 1.9 mg/ml to 6.7 mg/ml. All the samples displayed a positive correlation between their concentration (0.05-15.0 mg/ml) and DPPH radical scavenging activity. This investigation revealed that Sch. commune mushroom has great potential to be used as a source of antifungal and antioxidant substances.
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Affiliation(s)
- Violeta Berikashvili
- The Institute of Microbial Biotechnology, Agricultural University of Georgia, 0131 Tbilisi, Georgia
| | - Tamar Khardziani
- Durmishidze Institute of Biochemistry and Biotechnology, Academy of Science of Georgia, 10 km Agmashenebeli kheivani, 0159 Tbilisi, Georgia; Institute of Microbial Biotechnology, Agricultural University of Georgia, Tbilisi, Georgia
| | - Aza Kobakhidze
- The Institute of Microbial Biotechnology, Agricultural University of Georgia, 0131 Tbilisi, Georgia
| | - Maria Kulp
- Department of Chemistry and Biotechnology, Tallinn University of Technology, 12618 Tallinn, Estonia
| | - Maria Kuhtinskaja
- Department of Chemistry and Biotechnology, Tallinn University of Technology, 12618 Tallinn, Estonia
| | - Tiit Lukk
- Department of Chemistry and Biotechnology, Tallinn University of Technology, 12618 Tallinn, Estonia
| | - Maria Letizia Gargano
- Departament of Schol, Plant, and Food Sciences, University of Bari Aldo Moro, Via G. Amendola, 165/A - 70126 Bari, Italy
| | - Giuseppe Venturella
- Italian Society of Medicinal Mushrooms, Pisa, Italy; Department of Agricultural, Food and Forest Sciences, University of Palermo, 90128 Palermo, Italy
| | - Eva Kachlishvili
- The Institute of Microbial Biotechnology, Agricultural University of Georgia, 0131 Tbilisi, Georgia
| | - Eka Metreveli
- The Institute of Microbial Biotechnology, Agricultural University of Georgia, 0131 Tbilisi, Georgia
| | - Vladimir I Elisashvili
- The Institute of Microbial Biotechnology, Agricultural University of Georgia, 0131 Tbilisi, Georgia
| | - Mikheil Asatiani
- The Institute of Microbial Biotechnology, Agricultural University of Georgia, 0131 Tbilisi, Georgia
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Cheng X, Zhang L, Luo J, Yang S, Deng Y, Li J, Hou C. Two Pathogenic Fungi Isolated From Chalkbrood Samples and Honey Bee Viruses They Carried. Front Microbiol 2022; 13:843842. [PMID: 35495671 PMCID: PMC9039454 DOI: 10.3389/fmicb.2022.843842] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 02/22/2022] [Indexed: 11/13/2022] Open
Abstract
Ascosphaera apis and some Aspergillus species are the main pathogenic fungi of honey bee, and A. apis is the pathogen of chalkbrood disease. However, the infection mechanism of them is incompletely known and it is still unclear whether other factors impact their pathogenesis. In this study, Aspergillus tubingensis were obtained from the chalkbrood bee samples for the first time. Our results showed that A. tubingensis could promote the accumulation of the spores of A. apis. Pathogenicity test found that inoculation of the spores of the two fungi alone or their combination could induce disease characterization of chalkbrood and stonebrood but the extent was less than those in field. To further identify other pathogens impacted the pathogenesis, we found several honey bee viruses presented in the pathogenic fungi A. apis and A. tubingensis, which were different from previous reported. Our results indicated that acute bee paralysis virus (ABPV) and chronic bee paralysis virus (CBPV) could replicate in these two fungi and increased in titer with the going of cultivation time. In addition, CBPV could not only transmit vertically to the next generation by spores, but also spread horizontally to different fungi through hyphal anastomosis. These results suggested that the honey bee chalkbrood contained the other pathogenic fungi besides A. apis, the interactions between different pathogens of chalkbrood microbial communities may influence the prevalence of chalkbrood. Moreover, the discovery of honey bee viruses and their transmission mode in these two fungi enhanced the potential of exploring fungi virus as valuable factors that cause fungal disease outbreak.
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Affiliation(s)
- Xuefen Cheng
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China.,Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China.,Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Li Zhang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ji Luo
- Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning, China
| | - Sa Yang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yanchun Deng
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jianghong Li
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chunsheng Hou
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
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