ArticleWorld journal of microbiology & biotechnology2026
Genomic and functional insights into the thermophilic strain Geobacillus sp. Geo 8.1: a source of thermostable xylanase for sustainable bioprocesses.
Article in World journal of microbiology & biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Unlocking the molecular engineering of Geobacillus glycoside hydrolases as a source of industrial biocatalysts.Biotechnology letters · 2026Review
- Endo-β-1,4-Xylanase GH10 fromInternational journal of molecular sciences · 2026Article
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Authors and funding
11 authors.
Funding
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Abstract
A thermophilic bacterium, designated Geobacillus sp. Geo 8.1, was isolated from a submarine hydrothermal spring of Ischia Island (Italy) and characterized through genomic and biochemical analyses to evaluate its biotechnological potential. The draft genome (3.41 Mbp; GC 52.5%) revealed 3,751 coding sequences, including complete pathways for carbohydrate, lipid, and protein metabolism, and enzymes involved in stress response and hydrocarbon degradation. Phylogenomic and digital DNA–DNA hybridization analyses placed Geo 8.1 within the Geobacillus thermoleovorans/Geobacillus kaustophilus cluster. Functional annotation highlighted diverse genes encoding thermostable hydrolases such as xylanases, β-xylosidases, lipases, proteases, and α-amylases, together with catalases and dehalogenases relevant to environmental and industrial applications. Crude enzyme extracts exhibited strong xylanase activity (184 U/mL at 65 °C), and thin-layer chromatography confirmed the production of xylose as the major hydrolysis product, indicating the coordinated action of endo-xylanase and β-xylosidase. Genome reconstruction further demonstrated a complete D-xylose utilization pathway linking hemicellulose degradation to central carbon metabolism. The combined genomic and enzyme data reveal Geobacillus sp. Geo 8.1 represents a promising thermophilic biocatalyst for producing thermostable enzymes applicable to lignocellulose valorization, bioremediation, and various industrial processes.
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