Spathaspora cesarfonsecae sp. nov., a xylose‐fermenting yeast isolated from gut of passalid beetles and rotting wood in the Amazonian rainforest biome
Two yeast isolates of a novel d-xylose-fermenting species were obtained from rotting wood and gut of a passalid beetle collected in the Brazilian Amazonian Rainforest biome. Sequence analysis of the internal transcribed spacer-5.8S region and the D1/D2 domains of the LSU rRNA gene showed that the isolates represent a novel species of the genus <i>Spathaspora</i>, phylogenetically related to <i>Spathaspora passalidarum</i>. The yeast produced asci with a single malformed elongated ascospore with curved ends. The name <i>Spathaspora cesarfonsecae</i> sp. nov. is proposed to accommodate the novel species. The holotype of <i>Sp. cesarfonsecae</i> is CBS 14235 (MycoBank MB859328). Notably, <i>Sp. cesarfonsecae</i> demonstrated the ability to produce ethanol and xylitol from d-xylose, a biotechnologically valuable trait.
Authors
- Luiz Henrique Rosa (ORCID: https://orcid.org/0000-0001-9749-5182)
- Carlos A. Rosa (ORCID: https://orcid.org/0000-0002-0056-9075)
- Paula B. Morais (ORCID: https://orcid.org/0000-0002-5050-5766)
- Karen Costa (ORCID: https://orcid.org/0000-0003-4779-8972)
- Ana Raquel O. Santos (ORCID: https://orcid.org/0000-0001-9320-7673)
- Gisele F. L. Souza (ORCID: https://orcid.org/0000-0001-8995-9485)
- Katharina O. Barros (ORCID: https://orcid.org/0000-0001-9827-5966)
- Láuren Machado Drumond de Souza (ORCID: https://orcid.org/0000-0001-6007-3840)
- Maxwel Adriano Abegg (ORCID: https://orcid.org/0000-0002-0328-1122)
- Marc‐André Lachance (ORCID: https://orcid.org/0000-0001-9139-3935)
- Mariana Lopes (ORCID: https://orcid.org/0009-0005-4947-384X)
Institutions
- Universidade Federal de Minas Gerais (BR)
- Western University (CA)
- Universidade Federal do Tocantins (BR)
- Universidade Federal do Amazonas (BR)
Publication Details
- Journal
- INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
- Published
- 2025-08-08
- DOI
- https://doi.org/10.1099/ijsem.0.006871
- Primary Topic
- Yeasts and Rust Fungi Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Fundação de Amparo à Pesquisa do Estado de Minas Gerais