High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen Genomes
Fungi involved in lichen symbioses produce a large array of secondary metabolites that are often diagnostic in the taxonomic delimitation of lichens. The most common lichen secondary metabolites—polyketides—are synthesized by polyketide synthases, particularly by Type I PKS (TI-PKS). Here, we presen...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Journal of Fungi |
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| Online Access: | https://www.mdpi.com/2309-608X/8/5/449 |
| _version_ | 1827668345180127232 |
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| author | Julia V. Gerasimova Andreas Beck Silke Werth Philipp Resl |
| author_facet | Julia V. Gerasimova Andreas Beck Silke Werth Philipp Resl |
| author_sort | Julia V. Gerasimova |
| collection | DOAJ |
| description | Fungi involved in lichen symbioses produce a large array of secondary metabolites that are often diagnostic in the taxonomic delimitation of lichens. The most common lichen secondary metabolites—polyketides—are synthesized by polyketide synthases, particularly by Type I PKS (TI-PKS). Here, we present a comparative genomic analysis of the TI-PKS gene content of 23 lichen-forming fungal genomes from Ascomycota, including the de novo sequenced genome of <i>Bacidia rubella</i>. Firstly, we identify a putative atranorin cluster in <i>B. rubella</i>. Secondly, we provide an overview of TI-PKS gene diversity in lichen-forming fungi, and the most comprehensive Type I PKS phylogeny of lichen-forming fungi to date, including 624 sequences. We reveal a high number of biosynthetic gene clusters and examine their domain composition in the context of previously characterized genes, confirming that PKS genes outnumber known secondary substances. Moreover, two novel groups of reducing PKSs were identified. Although many PKSs remain without functional assignments, our findings highlight that genes from lichen-forming fungi represent an untapped source of novel polyketide compounds. |
| first_indexed | 2024-03-10T03:37:35Z |
| format | Article |
| id | doaj.art-62bf77c8fa5f414b8e050651e388a82d |
| institution | Directory Open Access Journal |
| issn | 2309-608X |
| language | English |
| last_indexed | 2024-03-10T03:37:35Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Fungi |
| spelling | doaj.art-62bf77c8fa5f414b8e050651e388a82d2023-11-23T11:41:14ZengMDPI AGJournal of Fungi2309-608X2022-04-018544910.3390/jof8050449High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen GenomesJulia V. Gerasimova0Andreas Beck1Silke Werth2Philipp Resl3Systematics, Biodiversity and Evolution of Plants, LMU Munich, 80638 Munich, GermanySystematics, Biodiversity and Evolution of Plants, LMU Munich, 80638 Munich, GermanySystematics, Biodiversity and Evolution of Plants, LMU Munich, 80638 Munich, GermanySystematics, Biodiversity and Evolution of Plants, LMU Munich, 80638 Munich, GermanyFungi involved in lichen symbioses produce a large array of secondary metabolites that are often diagnostic in the taxonomic delimitation of lichens. The most common lichen secondary metabolites—polyketides—are synthesized by polyketide synthases, particularly by Type I PKS (TI-PKS). Here, we present a comparative genomic analysis of the TI-PKS gene content of 23 lichen-forming fungal genomes from Ascomycota, including the de novo sequenced genome of <i>Bacidia rubella</i>. Firstly, we identify a putative atranorin cluster in <i>B. rubella</i>. Secondly, we provide an overview of TI-PKS gene diversity in lichen-forming fungi, and the most comprehensive Type I PKS phylogeny of lichen-forming fungi to date, including 624 sequences. We reveal a high number of biosynthetic gene clusters and examine their domain composition in the context of previously characterized genes, confirming that PKS genes outnumber known secondary substances. Moreover, two novel groups of reducing PKSs were identified. Although many PKSs remain without functional assignments, our findings highlight that genes from lichen-forming fungi represent an untapped source of novel polyketide compounds.https://www.mdpi.com/2309-608X/8/5/449lichensecondary compoundscomparative genomicsfungipolyketide synthases (PKS)Type I PKS |
| spellingShingle | Julia V. Gerasimova Andreas Beck Silke Werth Philipp Resl High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen Genomes Journal of Fungi lichen secondary compounds comparative genomics fungi polyketide synthases (PKS) Type I PKS |
| title | High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen Genomes |
| title_full | High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen Genomes |
| title_fullStr | High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen Genomes |
| title_full_unstemmed | High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen Genomes |
| title_short | High Diversity of Type I Polyketide Genes in <i>Bacidia rubella</i> as Revealed by the Comparative Analysis of 23 Lichen Genomes |
| title_sort | high diversity of type i polyketide genes in i bacidia rubella i as revealed by the comparative analysis of 23 lichen genomes |
| topic | lichen secondary compounds comparative genomics fungi polyketide synthases (PKS) Type I PKS |
| url | https://www.mdpi.com/2309-608X/8/5/449 |
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