September 19, 2025

Meristematic and meristematic-like fungi in Dothideomycetes

Key Points

New meristematic taxa related to Endophytium were identified in the Dothideomycetes lineage.
Maximum Likelihood analysis provided robust statistical support with confidence values over 70% for key branches.
Phylogenetic trees were constructed using multiple sequence alignments, including ITS, LSU, SSU, and RPB2.
This analysis highlights the diversity and evolutionary relationships among meristematic fungi in this order.

Abstract

Fig. S1. Maximum Likelihood (ML) phylogenetic tree of the ITS sequence alignment of the new genus Endophytium and related meristematic and meristematic-like fungi in Dothideomycetes. New taxa are in bold face. Thickened branches indicate full statistical support in all analyses. Confidence values for ML-BS ≥ 70 % (UFboot2/RAxML) are included near the nodes and the “-” indicates statistical support below the threshold values. The scale bar represents the expected number of changes per site. The tree was rooted to Xylaria (Xylariales, Sordariomycetes) and Sordaria (Sordariales, Sordariomycetes). Families and orders are shown in coloured blocks and indicated to the right of the tree.Fig. S2. Maximum Likelihood (ML) phylogenetic tree of the LSU sequence alignment of the new genus Endophytium and related meristematic and meristematic-like fungi in Dothideomycetes. New taxa are in bold face. Thickened branches indicate full statistical support in all analyses. Confidence values for ML-BS ≥ 70 % (UFboot2/RAxML) are included near the nodes and the “-” indicates statistical support below the threshold values. The scale bar represents the expected number of changes per site. The tree was rooted to Xylaria (Xylariales, Sordariomycetes) and Sordaria (Sordariales, Sordariomycetes). Families and orders are shown in coloured blocks and indicated to the right of the tree.Fig. S3. Maximum Likelihood (ML) phylogenetic tree of the SSU sequence alignment of the new genus Endophytium and related meristematic and meristematic-like fungi in Dothideomycetes. New taxa are in bold face. Thickened branches indicate full statistical support in all analyses. Confidence values for ML-BS ≥ 70 % (UFboot2/RAxML) are included near the nodes and the “-” indicates statistical support below the threshold values. The scale bar represents the expected number of changes per site. The tree was rooted to Xylaria (Xylariales, Sordariomycetes) and Sordaria (Sordariales, Sordariomycetes). Families and orders are shown in coloured blocks and indicated to the right of the tree.Fig. S4. Maximum Likelihood (ML) phylogenetic tree of the RPB2 sequence alignment of the new genus Endophytium and related meristematic and meristematic-like fungi in Dothideomycetes. New taxa are in bold face. Thickened branches indicate full statistical support in all analyses. Confidence values for ML-BS ≥ 70 % (UFboot2/RAxML) are included near the nodes and the “-” indicates statistical support below the threshold values. The scale bar represents the expected number of changes per site. The tree was rooted to Xylaria (Xylariales, Sordariomycetes) and Sordaria (Sordariales, Sordariomycetes). Families and orders are shown in coloured blocks and indicated to the right of the tree.Table S1. Summary of phylogenetic information for the different analyses in this study.Table S2. Species, strains/vouchers and GenBank accession numbers of sequences used in phylogenetic analyses. Newly generated sequences are in bold.

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