@article {1277454, title = {Sareomycetes cl. nov.: A new proposal for placement of the resinicolous genus Sarea (Ascomycota, Pezizomycotina)}, journal = {Fungal Systematics and Evolution}, volume = {6}, year = {2020}, abstract = {

Full citation: Beimforde, C., Schmidt, A.R., Rikkinen, J. and J.K. Mitchell. 2020. Sareomycetes cl. nov.: A new proposal for placement of the resinicolous genus Sarea (Ascomycota, Pezizomycotina). Fungal Systematics and Evolution.

Resinicolous fungi constitute a heterogeneous assemblage of fungi that live on fresh and solidified plant resins. The genus\ Sarea\ includes, according to current knowledge, two species,\ S. resinae\ and\ S. difformis. In contrast to other resinicolous discomycetes, which are placed in genera also including non-resinicolous species,\ Sarea\ species only ever fruit on resin. The taxonomic classification of\ Sarea\ has proven to be difficult and currently the genus, provisionally and based only on morphological features, has been assigned to the\ Trapeliales\ (Lecanoromycetes). In contrast, molecular studies have noted a possible affinity to the\ Leotiomycetes. Here we review the taxonomic placement of\ Sarea\ using sequence data from seven phylogenetically informative DNA regions including ribosomal (ITS, nucSSU, mtSSU, nucLSU) and protein-coding (rpb1,\ rpb2,\ mcm7) regions.

We combined available and new sequence data with sequences from major\ Pezizomycotina\ classes, especially\ Lecanoromycetes\ and\ Leotiomycetes, and assembled three different taxon samplings in order to place the genus\ Sarea\ within the\ Pezizomycotina. Based on our data, none of the applied phylogenetic approaches (Bayesian Inference, Maximum Likelihood and Maximum Parsimony) supported the placement of\ Sarea\ in the\ Trapeliales\ or any other order in the\ Lecanoromycetes. A placement of\ Sarea\ within the\ Leotiomycetes\ is similarly unsupported. Based on our data, Sarea forms an isolated and highly supported phylogenetic lineage within the "Leotiomyceta". From the results of our multilocus phylogenetic analyses we propose here a new class, order, and family,\ Sareomycetes,\ Sareales\ and\ Sareaceae\ in the\ Ascomycota\ to accommodate the genus\ Sarea. The genetic variability within the newly proposed class suggests that it is a larger group that requires further infrageneric classification.

}, url = {https://www-ingentaconnect-com.ezp-prod1.hul.harvard.edu/content/wfbi/fuse/pre-prints/content-f2_fuse_vol6_art2$\#$}, author = {C. Beimforde and A.R. Schmidt and J. Rikkinen and Mitchell, J.K.} }