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Whole-genome sequencing and comparative genomic analysis of potential biotechnological strains of Trichoderma harzianum, Trichoderma atroviride, and Trichoderma reesei

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Abstract

Trichoderma atroviride and Trichoderma harzianum are widely used as commercial biocontrol agents against plant diseases. Recently, T. harzianum IOC-3844 (Th3844) and T. harzianum CBMAI-0179 (Th0179) demonstrated great potential in the enzymatic conversion of lignocellulose into fermentable sugars. Herein, we performed whole-genome sequencing and assembly of the Th3844 and Th0179 strains. To assess the genetic diversity within the genus Trichoderma, the results of both strains were compared with strains of T. atroviride CBMAI-00020 (Ta0020) and T. reesei CBMAI-0711 (Tr0711). The sequencing coverage value of all genomes evaluated in this study was higher than that of previously reported genomes for the same species of Trichoderma. The resulting assembly revealed total lengths of 40 Mb (Th3844), 39 Mb (Th0179), 36 Mb (Ta0020), and 32 Mb (Tr0711). A genome-wide phylogenetic analysis provided details on the relationships of the newly sequenced species with other Trichoderma species. Structural variants revealed genomic rearrangements among Th3844, Th0179, Ta0020, and Tr0711 relative to the T. reesei QM6a reference genome and showed the functional effects of such variants. In conclusion, the findings presented herein allow the visualization of genetic diversity in the evaluated strains and offer opportunities to explore such fungal genomes in future biotechnological and industrial applications.

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Data availability

All data generated or analyzed in this study are included in this published article (and its supplementary information files). The raw datasets and the assembled genomes were deposited in the NCBI Sequence Read Archive and can be accessed under BioProject number PRJNA781962 and BioSample number as follows: SAMN23309297 (Th3844), SAMN23309298 (Th0179), SAMN23309299 (Ta0020), and SAMN23309300 (Tr0711).

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Acknowledgements

We are grateful to CBMAI Campinas and SP for conceiving the fungal isolates used in the current study; the Center of Molecular Biology and Genetic Engineering (CBMEG) at the University of Campinas and SP for the use of the center and laboratory space; and the São Paulo Research Foundation (FAPESP), the Coordination of Improvement of Higher Education Personnel (CAPES, Computational Biology Program), and the Brazilian National Council for Technological and Scientific Development (CNPq) for supporting the project and researchers.

Funding

Financial support for this work was provided by the São Paulo Research Foundation (FAPESP—Process number 2015/09202-0 and 2018/19660-4) and the Coordination for the Improvement of Higher Education Personnel (CAPES, Computational Biology Program—Process number 88882.160095/2013-01). RRR received a PhD fellowship from CAPES (88887.482201/2020-00) and FAPESP (2020/13420-1), PHCA received a PhD fellowship from CAPES (88887.612254/2021–00), MACH received a postdoctoral fellowship from FAPESP (2020/10536-9), and APS received a research fellowship from the Brazilian National Council for Technological and Scientific Development (CNPq- Process number 312777/2018-3).

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RRR: writing—original draft, methodology, formal analysis, and visualization. MACH: conceptualization, methodology, and writing—review & editing. PHCA: methodology and resources. CCS: methodology and formal analysis. DAS: methodology and resources. GHG: writing—review & editing. APS: conceptualization, supervision, review & editing, and funding acquisition.

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Correspondence to Anete Pereira de Souza.

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Communicated by Martine Collart.

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Rosolen, R.R., Horta, M.A.C., de Azevedo, P.H.C. et al. Whole-genome sequencing and comparative genomic analysis of potential biotechnological strains of Trichoderma harzianum, Trichoderma atroviride, and Trichoderma reesei. Mol Genet Genomics 298, 735–754 (2023). https://doi.org/10.1007/s00438-023-02013-5

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  • DOI: https://doi.org/10.1007/s00438-023-02013-5

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