@ARTICLE{TreeBASE2Ref28511, author = {Kanami Yoshino and Kohei Yamamoto and Masatoshi Sonoda and Yoshikazu Yamamoto and Kazunori Sakamoto}, title = {The evolutionary history of polyol transporter proteins and their involvement in lichenized Ascomycota}, year = {2018}, keywords = {Lichen, Polyol transporter, Ribitol, Lecanoromycetes, Protein family, Gene duplication}, doi = {}, url = {http://}, pmid = {}, journal = { Fungal Biology}, volume = {}, number = {}, pages = {}, abstract = {In lichen symbiosis, polyol transfer from green algae is important for acquiring the fungal carbon source. However, the existence of polyol transporter genes and their relationship with lichenization remain unclear. Here, we report candidate polyol transporter genes isolated from the lichen-forming fungus (LFF) Ramalina conduplicans. A phylogenetic analysis using the hypothetical R. conduplicans polyol transporter proteins and candidates from various ascomycetous fungi, selected from GenBank and MycoCosm, strongly suggested that the polyol transporters of yeast form multiple clusters with the polyol transporter-like proteins selected from the diverse ascomycetous taxa. Therefore, polyol transporter genes are widely conserved among Ascomycota, regardless of lichen-forming status. Subsequently, the protein similarity levels were evaluated using BLOSUM-62 matrix scores and identities, and the polyol transporter families? protein numbers were investigated using the genomes of 470 species or strains. In comparisons with yeast polyol transporter proteins, the orthologous LFFs had matrix scores > 1,200 scores and identities ≥ 50%. LFFs belonging to Lecanoromycetes tended to have a greater number of polyol transporter proteins. Therefore, we concluded that the presence of polyol transporter genes is a prerequisite for lichenization in Ascomycota. Additionally, at least one polyol transporter protein family has expanded during the evolution of LFFs.} }

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