3 research outputs found
Unravelling the phylogenetic relationships of lichenised fungi in Dothideomyceta
We present a revised phylogeny of lichenised Dothideomyceta
(Arthoniomycetes and Dothideomycetes) based on a combined
data set of nuclear large subunit (nuLSU) and mitochondrial small subunit
(mtSSU) rDNA data. Dothideomyceta is supported as monophyletic with
monophyletic classes Arthoniomycetes and Dothideomycetes;
the latter, however, lacking support in this study. The phylogeny of
lichenised Arthoniomycetes supports the current division into three
families: Chrysothrichaceae (Chrysothrix),
Arthoniaceae (Arthonia s. l., Cryptothecia,
Herpothallon), and Roccellaceae (Chiodecton, Combea,
Dendrographa, Dichosporidium, Enterographa, Erythrodecton, Lecanactis,
Opegrapha, Roccella, Roccellographa, Schismatomma, Simonyella). The
widespread and common Arthonia caesia is strongly supported as a
(non-pigmented) member of Chrysothrix. Monoblastiaceae, Strigulaceae,
and Trypetheliaceae are recovered as unrelated, monophyletic clades
within Dothideomycetes. Also, the genera Arthopyrenia
(Arthopyreniaceae) and Cystocoleus and Racodium
(Capnodiales) are confirmed as Dothideomycetes but unrelated
to each other. Mycomicrothelia is shown to be unrelated to
Arthopyrenia s.str., but is supported as a monophyletic clade sister
to Trypetheliaceae, which is supported by hamathecium characters. The
generic concept in several groups is in need of revision, as indicated by
non-monophyly of genera, such as Arthonia, Astrothelium, Cryptothecia,
Cryptothelium, Enterographa, Opegrapha, and Trypethelium in our
analyses
A class-wide phylogenetic assessment of Dothideomycetes
We present a comprehensive phylogeny derived from 5 genes, nucSSU, nucLSU
rDNA, TEF1, RPB1 and RPB2, for 356 isolates and 41
families (six newly described in this volume) in Dothideomycetes. All
currently accepted orders in the class are represented for the first time in
addition to numerous previously unplaced lineages. Subclass
Pleosporomycetidae is expanded to include the aquatic order
Jahnulales. An ancestral reconstruction of basic nutritional modes
supports numerous transitions from saprobic life histories to plant associated
and lichenised modes and a transition from terrestrial to aquatic habitats are
confirmed. Finally, a genomic comparison of 6 dothideomycete genomes with
other fungi finds a high level of unique protein associated with the class,
supporting its delineation as a separate taxon
A class-wide phylogenetic assessment of Dothideomycetes
We present a comprehensive phylogeny derived from 5 genes, nucSSU, nucLSU rDNA, TEF1, RPB1 and RPB2, for 356 isolates and 41 families (six newly described in this volume) in Dothideomycetes. All currently accepted orders in the class are represented for the first time in addition to numerous previously unplaced lineages. Subclass Pleosporomycetidae is expanded to include the aquatic order Jahnulales. An ancestral reconstruction of basic nutritional modes supports numerous transitions from saprobic life histories to plant associated and lichenised modes and a transition from terrestrial to aquatic habitats are confirmed. Finally, a genomic comparison of 6 dothideomycete genomes with other fungi finds a high level of unique protein associated with the class, supporting its delineation as a separate taxon