Distoseptisporales – Facesoffungi number: FoF 01754

Distoseptisporales Z.L. Luo, K.D. Hyde & H.Y. Su, Fungal Divers. 99: 482 (2019)

MycoBank number: MB 555640; Index Fungorum: IF 555640; Facesoffungi number: FoF 01754;

The monotypic order Distoseptisporales is placed in the class Sordariomycetes, subclass Diaporthomycetidae and comprises a single family Distoseptisporaceae and Aquapteridospora (Distoseptisporales genera incertae sedis). Distoseptisporaceae was established by Su et al. (2016b) with a single genus Distoseptispora based on morphology and phylogeny. Yang et al. (2015) introduced Aquapteridospora and was placed as Diaporthomycetidae genera incertae sedis. Luo et al. (2019) raised Distoseptisporaceae to Distoseptisporales based on the morphology and phylogenetic analysis of combined LSU, SSU, rpb2 and tef1 sequence data. The divergence time for Distoseptisporales has been estimated as 102 MYA (Fig. 2), which falls in the range of family status. The status may need revision following further study. Currently there is one family and one genus 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.