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au:SETTE, LARA D.

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Resistance to adverse conditions and characterization of Cladosporium species from marine and terrestrial Antarctic samples
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SIMONETTI, FLÁVIO L.

; CABRAL, LUCÉLIA

; CHÁVEZ, RENATO

; SETTE, LARA D.

Anais da Academia Brasileira de Ciências

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2024, Volume 96 Supl. 2 elocation e20230598

Resumo: En | Texto: En | PDF: En

Abstract Microbial adaptations to extreme environments can lead to biotechnological applications. This study aimed to evaluate the resistance of Antarctic Cladosporium to adverse conditions (temperature, salinity, UV radiation, and nutrients) and refine their taxonomy. Sequencing and phylogenetic analysis using ITS-act markers resulted in a more accurate taxonomic identification, revealing the presence of five different species, belonging to the complexes C. cladosporioides and C. sphaerospermum. The growth at different temperatures indicates that the soil isolates LAMAI 564 and 1800 (phylogenetically closely related) and LAMAI 2541 are psychrophilic, while the other isolates are psychrotolerant. The fungi isolated from the saline samples LAMAI 595, 616, and 1369 showed better growth results at higher salinity (15%). The fungi most resistant to UV radiation were isolated from terrestrial and marine samples (LAMAI 595, 616, 1800, and 564). LAMAI 595 and 616 (phylogenetically closely related and isolated from the same kind of sample) showed the capacity of nutritional versatility, growing well in both rich and poor-nutrient media. The fungus LAMAI 595 was the most promising for biotechnological application, exceeding the other isolates in the harsh conditions studied. The resistance of the Antarctic Cladosporium to adverse conditions opens new perspectives in the field of applied microbiology of extremophiles. applications temperature, temperature (temperature nutrients taxonomy ITSact ITS act identification species C sphaerospermum 56 180 phylogenetically 254 psychrophilic psychrotolerant 136 15%. 15 15% . (15%) 564. 564) 59 61 sample versatility poornutrient poor nutrient media application studied extremophiles 5 18 25 13 1 (15% 6 2 (15 (1 (

https://doi.org/10.1590/0001-3765202420230598

Marine-derived fungus Paramarasmius palmivorus CBMAI 1062 applied to sulphur indigo blue decolorization, degradation and detoxification Marinederived Marine derived 106 decolorization 10 1
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PELLIZZER, ELISA P.

; GIOVANELLA, PATRICIA

; FARIA, ADRIANO U. DE

; SETTE, LARA D.

Anais da Academia Brasileira de Ciências

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2024, Volume 96 Nº 4 elocation e20230315

Resumo: En | Texto: En | PDF: En

Abstract The use of marine microorganisms in the treatment of dyes and textile effluents is promising in view of their tolerance to salinity, a characteristic found in this kind of effluent. In this study, different culture conditions were applied to evaluate the decolorization, degradation, and detoxification of Sulphur Indigo Blue (SIB) by the marine-derived basidiomycete Paramarasmius palmivorus CBMAI 1062. Low salt concentration (SLS) and high salt concentration (SMASHS) media were used. P. palmivorus decolorized 100 % and 91.38 % of SIB after 120 h of growth in the SLS medium and after 168 h of growth in the SMASHS medium, respectively. Laccase activity was detected only in the SLS bioassay. UV-Vis, FT-IR, and GC-MS analyses indicated the occurrence of dye biosorption and biotransformation. In the SLS medium metabolites associated with SIB biotransformation (e.g. aldehyde, alkanes, and phenols) were detected. The toxicity measured by Cucumis sativus decreased from 45.41 % to 24.11 % in the SLS bioassay, while in SMASHS medium there was no change in toxicity. The efficiency for decolorization and detoxification of SIB indicates that microorganisms from the marine environment can be a source for biotechnological application in bioremediation processes carried out under saline conditions, adding value to blue biotechnology. salinity effluent study degradation (SIB marinederived derived 1062 (SLS (SMASHS used P 10 9138 91 38 91.3 12 16 respectively bioassay UVVis, UVVis UV Vis, Vis UV-Vis FTIR, FTIR FT IR, IR FT-IR GCMS GC MS e.g. eg e g (e.g aldehyde alkanes phenols 4541 45 41 45.4 2411 24 11 24.1 biotechnology 106 1 913 9 3 91. e.g 454 4 45. 241 2 24.

https://doi.org/10.1590/0001-3765202420230315

Biobank of fungi from marine and terrestrial Antarctic environments
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NARDO, VICTOR G.

; OTERO, IGOR V.R.

; GIOVANELLA, PATRICIA

; SANTOS, JULIANA APARECIDA DOS

; PELLIZZER, ELISA P.

; DOVIGO, DANIEL R.

; PAES, EDUARDO C.P.

; SETTE, LARA D.

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2023, Volume 95 Supl. 3 elocation e20230603

Resumo: En | Texto: En | PDF: En

Abstract Harsh and extreme environments, such as Antarctica, offer unique opportunities to explore new microbial taxa and biomolecules. Given the limited knowledge on microbial diversity, this study aimed to compile, analyze and compare a subset of the biobank of Antarctic fungi maintained at the UNESP’s Central of Microbial Resources (CRM-UNESP). A total of 711 isolates (240 yeasts and 471 filamentous fungi) from marine and terrestrial samples collected at King George Island (South Shetland Islands, Antarctica) were used with the primary objective of investigating their presence in both marine and terrestrial environments. Among the yeasts, 13 genera were found, predominantly belonging to the phylum Basidiomycota. Among the filamentous fungi, 34 genera were represented, predominantly from the phylum Ascomycota. The most abundant genera in the marine samples were Metschnikowia, Mrakia, and Pseudogymnoascus, while in the terrestrial samples, they were Pseudogymnoascus, Leucosporidium, and Mortierella. Most of the genera and species of the CRM-UNESP biobank of Antarctic fungi are being reported as an important target for biotechnological applications. This study showed the relevance of the CRM-UNESP biobank, highlighting the importance of applying standard methods for the preservation of the biological material and associated data (BMaD), as recommended in national and international standards. environments Antarctica biomolecules diversity compile UNESPs UNESP s CRMUNESP. CRMUNESP CRM . (CRM-UNESP) 71 240 (24 47 South Islands 1 found Basidiomycota 3 represented Ascomycota Metschnikowia Mrakia Pseudogymnoascus Leucosporidium Mortierella applications BMaD, BMaD , (BMaD) standards (CRM-UNESP 7 24 (2 4 (BMaD 2 (

https://doi.org/10.1590/0001-3765202320230603

Antarctic fungi applied to textile dye bioremediation
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KITA, DANIELA M.

; GIOVANELLA, PATRICIA

; YOSHINAGA, THAÍS T.

; PELLIZZER, ELISA P.

; SETTE, LARA D.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Supl. 1 elocation e20210234

Resumo: En | Texto: En | PDF: En

Abstract Antarctica has one of the most hostile conditions on the planet. The environmental characteristics found in this region favor the development of extremophile microorganisms, which are poorly explored biotechnologically. In this context, this study aimed at selectively isolating fungi with potential for the bioremediation of a textile dye. A total of 11 filamentous fungi were isolated from Antarctic samples after incubation in Minimal Mineral medium with the addition of Sulphur Indigo Blue dye. The Antarctic-derived fungi were submitted to textile dye decolorization analysis and biomass production. Isolates LAMAI 2400 and LAMAI 2402 showed more than 90% of decolorization at 15 °C, whereas at 28 °C these isolates showed 81.86 and 98.89%, respectively. In general, the toxicity of the bioassays, evaluated using Cucumis sativus, was higher than in the control. Both isolates, LAMAI 2400 and LAMAI 2402, were identified as Penicillium cf. oxalicum and classified as mesophilic-psychrotolerant. This fungal species has rarely been reported in the Antarctic environments. The results presented herein indicate the potential of the fungi recovered from Antarctic marine sediments for bioremediation of textile dyes at low and moderate temperatures, broadening the perspectives in the field of Antarctic mycology.

https://doi.org/10.1590/0001-3765202220210234

Antarctic environments as a source of bacterial and fungal therapeutic enzymes
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LIMA, IGOR G.O.

; BISPO, JAMES R.S.

; AGOSTINHO, ADSON Y.H.

; QUEIROZ, ALINE C. DE

; MOREIRA, MAGNA SUZANA A.

; PASSARINI, MICHEL RODRIGO Z.

; OLIVEIRA, VALÉRIA M. DE

; SETTE, LARA D.

; ROSA, LUIZ HENRIQUE

; DUARTE, ALYSSON WAGNER F.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Supl. 1 elocation e20210452

Resumo: En | Texto: En | PDF: En

Abstract Microbial therapeutic enzymes are the protagonists in the pharmacological treatment of different human diseases. The intrinsic enzymatic characteristics, such as high affinity and specificity to the corresponding substrate, enable effective therapies, with minimal adverse effects and complete remission. However, immunogenicity, short half-life, low enzymatic yield, and low selectivity regarding available enzyme drugs are currently the main obstacles to their development and the broad adherence to therapeutic protocols. By harboring adapted and still unexplored microbial life, environments of extreme conditions, such as Antarctica, become especially important in the prospecting and development of new enzymatic compounds that present higher yields and the possibility of genetic improvement. Antarctic microorganisms have adaptation mechanisms, such as more fluid cell membranes, production of antifreeze proteins and enzymes with more malleable structures, more robust, stable, selective catalytic sites for their respective substrates, and high antioxidant capacity. In this context, this review aims to explore enzymes synthesized by bacteria and fungi from Antarctica as potential drug producers, capable of providing therapeutic efficacy, less adverse effects, and lower production costs with highlight to L-Asparaginase, collagenase, superoxide dismutase and ribonucleases. In addition, this review highlights the unique biotechnological profile of these Antarctic extremophile microorganisms.

https://doi.org/10.1590/0001-3765202220210452

Antarctic-derived yeasts: taxonomic identification and resistance to adverse conditions
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FARIAS, GABRIELE S.

; SANTOS, JULIANA A.

; GIOVANELLA, PATRICIA

; SETTE, LARA D.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Supl. 1 elocation e20210592

Resumo: En | Texto: En | PDF: En

Abstract Antarctic harsh conditions favor the development of microbial adaptations. In this study, a molecular approach was applied to identify/refine the taxonomy of five yeasts isolated from different Antarctic samples, which were tested against ranges of temperature, UV radiations, salinity, and pH. Based on sequencing and phylogenetic analysis, strain CRM 1839 was confirmed as Naganishia sp., and strains CRM 1874, CRM 1565, CRM 2571, and CRM 2576 were identified as Goffeauzyma gilvescens, Goffeauzyma gastrica, Candida atlantica, and Camptobasidium sp., respectively, being this last one possibly a new species. Growth at different temperatures indicates that these yeasts are psychrotolerant, with the exception of Camptobasidium sp., which presents psychrophilic characteristics. G. gastrica recovered from marine sediment showed the best results of resistance to UV radiation, being able to grow even after the exposure to UVB dose of 9144 J/m² and UVC dose of 6102 J/m². C. atlantica isolated from glacier soil showed high cellular growth from 3 to 10% NaCl. The majority of the strains produced higher biomass at pH 7; nevertheless, G. gilvescens showed higher biomass production at pH 9. The studied Antarctic-derived yeasts have adaptations to extreme conditions, which makes them useful for biotechnological applications and studies of extremophiles.

https://doi.org/10.1590/0001-3765202220210592

Polycyclic aromatic hydrocarbons degradation by marine-derived basidiomycetes: optimization of the degradation process
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Vieira, Gabriela A.L.

; Magrini, Mariana Juventina

; Bonugli-Santos, Rafaella C.

; Rodrigues, Marili V.N.

; Sette, Lara D.

Brazilian Journal of Microbiology

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Dez 2018, Volume 49 Nº 4 Páginas 749 - 756

Resumo: En | Texto: En | PDF: En

ABSTRACT Pyrene and benzo[a]pyrene (BaP) are high molecular weight polycyclic aromatic hydrocarbons (PAHs) recalcitrant to microbial attack. Although studies related to the microbial degradation of PAHs have been carried out in the last decades, little is known about degradation of these environmental pollutants by fungi from marine origin. Therefore, this study aimed to select one PAHs degrader among three marine-derived basidiomycete fungi and to study its pyrene detoxification/degradation. Marasmiellus sp. CBMAI 1062 showed higher levels of pyrene and BaP degradation and was subjected to studies related to pyrene degradation optimization using experimental design, acute toxicity, organic carbon removal (TOC), and metabolite evaluation. The experimental design resulted in an efficient pyrene degradation, reducing the experiment time while the PAH concentration applied in the assays was increased. The selected fungus was able to degrade almost 100% of pyrene (0.08 mg mL-1) after 48 h of incubation under saline condition, without generating toxic compounds and with a TOC reduction of 17%. Intermediate metabolites of pyrene degradation were identified, suggesting that the fungus degraded the compound via the cytochrome P450 system and epoxide hydrolases. These results highlight the relevance of marine-derived fungi in the field of PAH bioremediation, adding value to the blue biotechnology.

https://doi.org/10.1016/j.bjm.2018.04.007 1171 downloads

A STRATEGY FOR THE RAPID IDENTIFICATION OF FUNGAL METABOLITES AND THE DISCOVERY OF THE ANTIVIRAL ACTIVITY OF PYRENOCINE A AND HARZIANOPYRIDONE
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Ióca, Laura P.

; Romminger, Stelamar

; Santos, Mario F. C.

; Bandeira, Karin F.

; Rodrigues, Fabiana T.

; Kossuga, Miriam H.

; Nicacio, Karen J.

; Ferreira, Everton L. F.

; Morais-Urano, Raquel P.

; Passos, Messias S.

; Kohn, Luciana K.

; Arns, Clarice W.

; Sette, Lara D.

; Berlinck, Roberto G. S.

Química Nova

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Jul 2016, Volume 39 Nº 6 Páginas 720 - 731

Resumo: En | Texto: En | PDF: En

The isolation and identification of bioactive metabolites from complex extracts obtained from microbial growth media is a time consuming, costly, and labor-intensive task. A strategy to rapidly identify secondary metabolites isolated from extracts obtained from the culture media of marine-derived and endophytic fungal strains is described. Identification was achieved by HPLC-UV-MS and 1H NMR analyses in combination with data obtained from the Dictionary of Natural Products. Among the compounds identified, (-)-naphthoquinoneimine, citreorosein, emodin, pyrenocine A and harzianopyridone displayed moderate to potent antiviral activity. (-)-Naphthoquinoneimine was isolated as the enantiomer of its previously reported dextrorotatory congener, while 6,7-dihydroxy-2,2-dimethyl-4-chromanone is herein reported for the first time as a natural product.

https://doi.org/10.5935/0100-4042.20160092 2688 downloads

Selection of thermophilic and thermotolerant fungi for the production of cellulases and xylanases under solid-state fermentation
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Moretti, Marcia M. S.

; Bocchini-Martins, Daniela A.

; Silva, Roberto Da

; Rodrigues, André

; Sette, Lara D.

; Gomes, Eleni

Brazilian Journal of Microbiology

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Set 2012, Volume 43 Nº 3 Páginas 1062 - 1071

Resumo: En | Texto: En | PDF: En

Twenty-seven thermophilic and thermotolerant fungal strains were isolated from soil, decaying organic matter and sugarcane piles based on their ability to grow at 45ºC on medium containing corn straw and cardboard as carbon sources. These fungi were identified in the genera Aspergillus, Thermomyces, Myceliophthora, Thermomucor and Candida. The majority of the isolated strains produced xylanase and cellulases under solid state fermentation (SSF). The highest cellulase and xylanase productions were obtained by the cultivation of the strains identified as Aspergillus fumigatus M.7.1 and Myceliophthora thermophila M.7.7. The enzymes from these strains exhibited maximum activity at pH 5.0 and at 60 and 70ºC. The endo-glucanase from A. fumigatus was stable from 40ºC to 65ºC and both endo-glucanase and xylanase from M. thermophila were stable in this temperature range when in absence of substrate. The enzymes were stable from pH 4.0 to 9.0.

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Evaluating methods for the isolation of marine-derived fungal strains and production of bioactive secondary metabolites
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Kossuga, Miriam H.

; Romminger, Stelamar

; Xavier, Camila

; Milanetto, Marília C.

; Valle, Milene Z. do

; Pimenta, Eli F.

; Morais, Raquel P.

; Carvalho, Erica de

; Mizuno, Carolina M.

; Coradello, Luís Fernando C.

; Barroso, Vinícius de M.

; Vacondio, Bruna

; Javaroti, Darci C. D.

; Seleghim, Mirna H. R.

; Cavalcanti, Bruno C.

; Pessoa, Claudia

; Moraes, Manoel O.

; Lima, Bruna A.

; Gonçalves, Reginaldo

; Bonugli-Santos, Rafaella C.

; Sette, Lara D.

; Berlinck, Roberto G. S.

Revista Brasileira de Farmacognosia

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Abr 2012, Volume 22 Nº 2 Páginas 257 - 267

Resumo: En | Texto: En | PDF: En

In the present investigation we evaluate methods for the isolation and growth of marine-derived fungal strains in artificial media for the production of secondary metabolites. Inoculation of marine macroorganisms fragments in Petri dishes proved to be the most convenient procedure for the isolation of the largest number of strains. Among the growth media used, 3% malt extract showed the best result for strains isolation and growth, and yielded the largest number of strains from marine macroorganisms. The percentage of strains isolated using each of the growth media which yielded cytotoxic and/or antibiotic extracts was in the range of 23-35%, regardless of the growth media used. Further investigation of extracts obtained from different marine-derived fungal strains yielded several bioactive secondary metabolites, among which (E)-4-methoxy-5-(3-methoxybut-1-enyl)-6-methyl-2H-pyran-2-one is a new metabolite isolated from the Penicillium paxilli strain Ma(G)K.

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A multi-screening approach for marine-derived fungal metabolites and the isolation of cyclodepsipeptides from Beauveria felina
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Vita-Marques, Aline Maria de

; Lira, Simone P.

; Berlinck, Roberto G. S.

; Seleghim, Mirna H. R.

; Sponchiado, Sandra R. P.

; Tauk-Tornisielo, Sâmia M.

; Barata, Margarida

; Pessoa, Claudia

; Moraes, Manoel O. de

; Cavalcanti, Bruno Coêlho

; Nascimento, Gislene G. F.

; Souza, Ana O. de

; Galetti, Fabio C. S.

; Silva, Célio L.

; Silva, Marcio

; Pimenta, Eli F.

; Thiemann, Otavio

; Passarini, Michel R. Z.

; Sette, Lara D.

Química Nova

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2008, Volume 31 Nº 5 Páginas 1099 - 1103

Resumo: En | Texto: En | PDF: En

Extracts obtained from 57 marine-derived fungal strains were analyzed by HPLC-PDA, TLC and ¹H NMR. The analyses showed that the growth conditions affected the chemical profile of crude extracts. Furthermore, the majority of fungal strains which produced either bioactive of chemically distinctive crude extracts have been isolated from sediments or marine algae. The chemical investigation of the antimycobacterial and cytotoxic crude extract obtained from two strains of the fungus Beauveria felina have yielded cyclodepsipeptides related to destruxins. The present approach constitutes a valuable tool for the selection of fungal strains that produce chemically interesting or biologically active secondary metabolites.

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