Fuscosporellales J. Yang, J. Bhat & K.D. Hyde, Cryptog. Mycol. 37(4): 457 (2016)

MycoBank number: MB 552288; Index Fungorum number: IF 552288; Facesofofungi number: FoF 02420;

The order has been established in Hypocreomycetidae based on combined SSU, LSU and rpb2 phylogenetic analyses and comprises one family, Fuscosporellaceae (Yang et al. 2016b). Six genera, namely, Fuscosporella, Parafuscosporella, Mucispora, Bactrodesmiastrum, Plagiascoma and Pseudoascotaiwania are accommodated within Fuscosporellaceae. Earlier, Bactrodesmiastrum and Plagiascoma were placed in Sordariomycetes genera incertae sedis (Réblová et al. 2016c). Yang et al. (2016b) showed that these two genera clustered with three newly introduced genera, Fuscosporella, Parafuscosporella and Mucispora. The species Ascotaiwania persoonii also grouped with the five genera, away from the type species of Ascotaiwania. This species was therefore synonymized under Pseudoascotaiwania persoonia (Yang et al. 2016b). The six genera form a monophyletic clade represented by Fuscosporellales, which is sister to Conioscyphales, Pleurotheciales and Savoryellales (Yang et al. 2016b). The divergence time for Fuscosporellales has been estimated as 190 MYA (Fig. 2). Currently there is one family and six genera in this order (this paper).

Figure 2 – The maximum clade credibility (MCC) tree, using the same dataset from Fig. 1. This analysis was performed in BEAST v1.10.2. The crown age of Sordariomycetes was set with Normal distribution, mean = 250, SD = 30, with 97.5% of CI = 308.8 MYA, and crown age of Dothideomycetes with Normal distribution mean = 360, SD = 20, with 97.5% of CI = 399 MYA. The substitution models were selected based on jModeltest2.1.1; GTR+I+G for LSU, rpb2 and SSU, and TrN+I+G for tef1 (the model TrN is not available in BEAUti 1.10.2, thus we used TN93). Lognormal distribution of rates was used during the analyses with uncorrelated relaxed clock model. The Yule process tree prior was used to model the speciation of nodes in the topology with a randomly generated starting tree. The analyses were performed for 100 million generations, with sampling parameters every 10000 generations. The effective sample sizes were checked in Tracer v.1.6 and the acceptable values are higher than 200. The first 20% representing the burn-in phase were discarded and the remaining trees were combined in LogCombiner 1.10.2., summarized data and estimated in TreeAnnotator 1.10.2. Bars correspond to the 95% highest posterior density (HPD) intervals. The scale axis shows divergence times as millions of years ago (MYA).

Figure 2 – Continued.

Figure 2 – Continued.