Zygosporium Mont., in Sagra, Annls Sci. Nat., Bot., sér. 2 17: 120 (1842)

Index Fungorum number: IF10473

Montagne (1842) introduced Zygosporium, with the type species Z. oscheoides. Zygosporium species are hyphomycetous (asexual morphs) and characterized by incurved vesicular cells, globose or ellipsoid and smooth or variously ornamented conidia (Mason 1941, Hughes 1951). Members in this family are usually saprobes in temperate to tropical regions (Photita et al. 2001, Whitton et al. 2003, Manoharachary et al. 2006, McKenzie et al. 2007, Abbas et al. 2011, Taheriyan et al. 2014). Sequence data are available for eight species (Z. chartarum, Z. echinosporum, Z. gibbum, Z. masonii, Z. minus, Z. mycophilum, Z. oscheoides and Z. pseudogibbum. Twenty-nine species are listed in the Index Fungorum (2020) for Zygosporium.

Fig. 1 – Phylogram generated from maximum likelihood analysis based on combined ITS and LSU sequence data. Twenty-eight strains are included in the combined analyses which comprised 1692 characters (886 characters for LSU, 806 characters for ITS) after alignment. Tree topology of the maximum likelihood analysis is similar to the Bayesian analysis. The best RaxML tree with a final likelihood value of – 6124.325108 is presented. Estimated base frequencies were as follows: A = 0.251365, C = 0.225264, G = 0.263340, T = 0.260032; substitution rates AC = 1.698973, AG = 1.810312, AT = 1.340678, CG = 1.032354, CT = 5.136988, GT = 1.000000; gamma distribution shape parameter a = 0.478984. Bootstrap support values for ML greater than 75% and Bayesian posterior probabilities greater than 0.95 are given near nodes respectively. The tree is rooted with Camillea obularia ATCC28093. Ex-type strains are in bold and black.