Abstract
The relationship between ascomycetes and basidiomycetes, the two main phyla of non-flagellated fungi, has rarely been investigated. In this study, we performed a comparative genomics analysis of genome sequences of 55 ascomycetes and 26 basidiomycetes species and detected 81 universal markers, 875 homologous genes and a conserved contig in the glucose-regulated protein gene. In dendrograms based on simple sequence repeat markers and homologous genes, ascomycetes and basidiomycetes formed distinct clusters, with each set of taxa having a high coefficient of relatedness. Ascomycetes and basidiomycetes also constituted distinct groups in a phylogenetic tree based on a conserved contig in the glucose-regulated protein gene. These results provide evidence that basidiomycetes may be derived from ascomycetes but are definitely genetically differentiated at the genomic level. The phylogenetic relationships of ascomycetes and basidiomycetes uncovered in this study provide new insights for future research related to fungal classification and evolution.
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