Functional and Metabolic Characterization of the Genome of Aspergillus salvadorensis Based on the Distribution of COG Categories (2026
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Date
2026-04-30
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IKR Journal of Agriculture and Biosciences
Abstract
From the term EggNOG summary: Orthology Frequency within COG (Clusters of Orthologous Groups) Categories. The functional and metabolic characterization of the genome of Aspergillus salvadorensis by means of the analysis of COG categories allowed the identification of the main cellular, metabolic and genetic regulation processes associated with this fungal species. The analysis revealed a wide functional diversity, highlighting the high proportion of genes classified within the category of unknown functions, with a total of 185 sequences, which suggests the existence of metabolic pathways not yet described and potential biotechnological applications. This high representation of uncharacterized genes is common in emerging filamentous fungi and suggests that A. salvadorensis may possess unique adaptive mechanisms associated with the degradation of complex compounds and survival in tropical environments. Among the most representative functional categories were those related to the storage and processing of genetic information, including transcription (64 genes), ribosomal translation and biogenesis (63 genes), as well as DNA replication, recombination and repair (39 genes). These results indicate the presence of a highly active and efficient molecular machinery in the regulation of gene expression, which suggests a high capacity to respond to variable environmental conditions. Likewise, the significant presence of genes associated with post-translational modification, protein turnover and chaperones (30 genes) evidences the existence of robust mechanisms of protein control and adaptation to cellular stress. Metabolic analysis also showed an important representation of genes involved in energy production and conversion (47 genes), carbohydrate metabolism (45 genes), and amino acid metabolism (43 genes), reflecting remarkable metabolic versatility. These characteristics are consistent with the ability of fungi of the genus Aspergillus to degrade complex organic materials and participate in biogeochemical cycles. In addition, the presence of genes related to the metabolism of lipids, nucleotides, coenzymes, and inorganic ions suggests a comprehensive and highly regulated metabolism, capable of adapting to various nutrient sources. In relation to cellular processes, genes associated with intracellular trafficking, vesicular secretion and transport (18 genes), as well as signal transduction mechanisms (21 genes) and cell envelope biogenesis (13 genes) were identified. These functions are essential for extracellular enzyme secretion and structural adaptation to adverse environmental conditions, reinforcing the potential of A. salvadorensis as an efficient degrading organism of natural and synthetic polymers. Likewise, the presence of genes related to the biosynthesis of secondary metabolites (8 genes) suggests the possible production of bioactive compounds with pharmaceutical, industrial and environmental applications. Conclusion, The functional distribution suggests that Aspergillus salvadorensis presents a complex genetic architecture associated with environmental adaptation, degradation of compounds and production of metabolites of biotechnological interest. Metabolic diversity, together with specialized cellular
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COG, Aspergillus salvadorensis, Bioremediation, Genes