Transcriptome and secretome analysis of Aspergillus fumigatus in the presence of sugarcane bagasse
| العنوان: | Transcriptome and secretome analysis of Aspergillus fumigatus in the presence of sugarcane bagasse |
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| المؤلفون: | Diego Mauricio Riaño-Pachón, Taisa Magnani Dinamarco, Emerson de Souza Santos, Aline Vianna Bernardi, Paula Fagundes de Gouvêa, Sérgio Akira Uyemura, Luis Eduardo Gerolamo |
| المصدر: | BMC Genomics BMC Genomics, Vol 19, Iss 1, Pp 1-18 (2018) |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0301 basic medicine, lcsh:QH426-470, Glycoside Hydrolases, lcsh:Biotechnology, RNA-Seq, Sugarcane bagasse, Cellulase, Fructose, Aspergillus fumigatus, Transcriptome, Fungal Proteins, 03 medical and health sciences, chemistry.chemical_compound, Tandem Mass Spectrometry, lcsh:TP248.13-248.65, Genetics, Lignocellulose breakdown, Cellulases, Ethanol fuel, Hemicellulose, Glycoside hydrolase, Cellulose, Secretome, biology, Sequence Analysis, RNA, Gene Expression Profiling, Glucan Endo-1,3-beta-D-Glucosidase, biology.organism_classification, Saccharum, lcsh:Genetics, 030104 developmental biology, Xylosidases, Biochemistry, chemistry, biology.protein, Bagasse, CAZymes, Biotechnology, Chromatography, Liquid, Research Article |
| الوصف: | Background Sugarcane bagasse has been proposed as a lignocellulosic residue for second-generation ethanol (2G) produced by breaking down biomass into fermentable sugars. The enzymatic cocktails for biomass degradation are mostly produced by fungi, but low cost and high efficiency can consolidate 2G technologies. A. fumigatus plays an important role in plant biomass degradation capabilities and recycling. To gain more insight into the divergence in gene expression during steam-exploded bagasse (SEB) breakdown, this study profiled the transcriptome of A. fumigatus by RNA sequencing to compare transcriptional profiles of A. fumigatus grown on media containing SEB or fructose as the sole carbon source. Secretome analysis was also performed using SDS-PAGE and LC-MS/MS. Results The maximum activities of cellulases (0.032 U mL-1), endo-1,4-β--xylanase (10.82 U mL-1) and endo-1,3-β glucanases (0.77 U mL-1) showed that functional CAZymes (carbohydrate-active enzymes) were secreted in the SEB culture conditions. Correlations between transcriptome and secretome data identified several CAZymes in A. fumigatus. Particular attention was given to CAZymes related to lignocellulose degradation and sugar transporters. Genes encoding glycoside hydrolase classes commonly expressed during the breakdown of cellulose, such as GH-5, 6, 7, 43, 45, and hemicellulose, such as GH-2, 10, 11, 30, 43, were found to be highly expressed in SEB conditions. Lytic polysaccharide monooxygenases (LPMO) classified as auxiliary activity families AA9 (GH61), CE (1, 4, 8, 15, 16), PL (1, 3, 4, 20) and GT (1, 2, 4, 8, 20, 35, 48) were also differentially expressed in this condition. Similarly, the most important enzymes related to biomass degradation, including endoxylanases, xyloglucanases, β-xylosidases, LPMOs, α-arabinofuranosidases, cellobiohydrolases, endoglucanases and β-glucosidases, were also identified in the secretome. Conclusions This is the first report of a transcriptome and secretome experiment of Aspergillus fumigatus in the degradation of pretreated sugarcane bagasse. The results suggest that this strain employs important strategies for this complex degradation process. It was possible to identify a set of genes and proteins that might be applied in several biotechnology fields. This knowledge can be exploited for the improvement of 2G ethanol production by the rational design of enzymatic cocktails. Electronic supplementary material The online version of this article (10.1186/s12864-018-4627-8) contains supplementary material, which is available to authorized users. |
| تدمد: | 1471-2164 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d47b5eeaef6585f4d00198c5ee1ccb7Test https://pubmed.ncbi.nlm.nih.gov/29614953Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....2d47b5eeaef6585f4d00198c5ee1ccb7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14712164 |
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