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Expression profiling of Clostridium thermocellum B8 during the deconstruction of sugarcane bagasse and straw

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Abstract

The gram-positive bacterium Clostridium thermocellum contains a set of carbohydrate-active enzymes that can potentially be employed to generate high-value-added products from lignocellulose. In this study, the gene expression profiling of C. thermocellum B8 was provided during growth in the presence of sugarcane bagasse and straw as a carbon source in comparison to growth using microcrystalline cellulose. A total of 625 and 509 genes were up-regulated for growth in the presence of bagasse and straw, respectively. These genes were mainly grouped into carbohydrate-active enzymes (CAZymes), cell motility, chemotaxis, quorum sensing pathway and expression control of glycoside hydrolases. These results show that type of carbon source modulates the gene expression profiling of carbohydrate-active enzymes. In addition, highlight the importance of cell motility, attachment to the substrate and communication in deconstructing complex substrates. This present work may contribute to the development of enzymatic cocktails and industrial strains for biorefineries based on sugarcane residues as feedstock.

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Data availability

Sequences were deposited in the Sequence Read Archive (SRA) of the National Center for Biotechnology under BioProject number PRJNA625501. Raw sequence reads can be found in https://www.ncbi.nlm.nih.gov/sra/PRJNA625501.

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Funding

This study was supported by grants from the CAPES, CNPq, and FAPDF. CNPq provided scholarship for BR and EFN (Grant No. 309338/2017–4).

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BR and EFN, conceived the project and designed the experiments. All the authors contributed to carry the experiments, write the manuscript and agreed to publish it.

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Correspondence to Eliane Ferreira Noronha.

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de Camargo, B.R., Steindorff, A.S., da Silva, L.A. et al. Expression profiling of Clostridium thermocellum B8 during the deconstruction of sugarcane bagasse and straw. World J Microbiol Biotechnol 39, 105 (2023). https://doi.org/10.1007/s11274-023-03546-y

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  • DOI: https://doi.org/10.1007/s11274-023-03546-y

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