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Production and Identification of Two Antifungal Terpenoids from the Posidonia Oceanica Epiphytic Ascomycota Mariannaea Humicola IG100

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Publisher Biomed Central
Date 2020 Oct 2
PMID 33004054
Citations 3
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Abstract

Background: Marine fungi are an important repository of bioactive molecules with great potential in different technological fields, the annual number of new compounds isolated from marine fungi is impressive and the general trend indicates that it is still on the rise. In this context, the antifungal and antimicrobial activity of the marine strain Mariannaea humicola IG100 was evaluated and two active terpenoids were isolated and characterized.

Methods: Preliminary screening of activity of marine strain IG100 was carried out by agar plug diffusion methods against fungal (Penicillium griseofulvum TSF04) and bacterial (Bacillus pumilus KB66 and Escherichia coli JM109) strains. Subsequently, inhibition tests were done by using the cultural broth and the organic extract (ethyl acetate, EtOAc) by the agar well diffusion methods. The main active fractions were identified and tested for their antifungal activity against P. griseofulvum TSF04 in a 24 wells microplate at different concentrations (1000, 100, 10 and 1.0 µg/mL). Two active compounds were characterized and their relative MIC measured by the broth micro-dilution methods in a 96-well microplate against Aspergillus flavus IG133, P. griseofulvum TSF04, and Trichoderma pleuroticola IG137.

Results: Marine strain IG100 presented significant antifungal activity associated with two active compounds, the terpenoids terperstacin 1 and 19-acetyl-4-hydroxydictyodiol 2. Their MIC values were measured for A. flavus (MIC of 7.9 µg/mL and 31.3 µg/mL for 1 and 2, respectively), P. griseofulvum (MIC of 25 µg/mL and 100 µg/mL for 1 and 2, respectively) and T. pleuroticola (MIC > 500 µg/mL and 125 µg/mL for 1 and 2, respectively). They showed a rather good fungistatic effect.

Conclusions: In this study, the first marine strain of M. humicola (IG100) was investigated for the production of bioactive molecules. Strain IG100 produced significant amounts of two bioactive terpenoids, terperstacin 1 and 19-acetyl-4-hydroxydictyodiol 2. The two compounds showed significant antifungal activities against A. flavus IG133, T. pleuroticola IG137 and P. griseofulvum TSF04. Compound 2 was identified for the first time in fungi.

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References
1.
Posada D, Buckley T . Model selection and model averaging in phylogenetics: advantages of akaike information criterion and bayesian approaches over likelihood ratio tests. Syst Biol. 2004; 53(5):793-808. DOI: 10.1080/10635150490522304. View

2.
Logrieco A, Moretti A, Fornelli F, Fogliano V, Ritieni A, Caiaffa M . Fusaproliferin production by Fusarium subglutinans and its toxicity to Artemia salina, SF-9 insect cells, and IARC/LCL 171 human B lymphocytes. Appl Environ Microbiol. 1996; 62(9):3378-84. PMC: 168135. DOI: 10.1128/aem.62.9.3378-3384.1996. View

3.
Chan J, Jamison T . Synthesis of (-)-terpestacin via catalytic, stereoselective fragment coupling: siccanol is terpestacin, not 11-epi-terpestacin. J Am Chem Soc. 2003; 125(38):11514-5. DOI: 10.1021/ja0373925. View

4.
Geiser D, Dorner J, Horn B, Taylor J . The phylogenetics of mycotoxin and sclerotium production in Aspergillus flavus and Aspergillus oryzae. Fungal Genet Biol. 2001; 31(3):169-79. DOI: 10.1006/fgbi.2000.1215. View

5.
Masi M, Meyer S, Gorecki M, Pescitelli G, Clement S, Cimmino A . Phytotoxic Activity of Metabolites Isolated from , the Causal Agent of Bleach Blonde Syndrome on Cheatgrass (). Molecules. 2018; 23(7). PMC: 6100615. DOI: 10.3390/molecules23071734. View