Heteromicrosphaeropsis ononidicola (Thambug., Camporesi & K.D.Hyde), 2022

Artand, Saeid, Mehrabi-Koushki, Mehdi, Tabein, Saeid, Hyde, Kevin D. & Jayawardena, Ruvishika S., 2022, Revision of the Microsphaeropsis complex with addition of four new Paramicrosphaeropsis L. W. Hou, L. Cai & Crous species from Zagrosian forest trees in Iran, Cryptogamie, Mycologie 20 (7), pp. 159-175 : 164-165

Heteromicrosphaeropsis ononidicola (Thambug., Camporesi & K.D.Hyde)

M.Mehrabi-Koushki, K.D.Hyde & Jayaward., comb. nov.

Microsphaeropsis ononidicola Thambug., Camporesi & K.D.Hyde, Current Research in Environmental & Applied Mycology 8: 220 ( Thambugala et al. 2018).

MYCOBANK. — MB 841491.

DESCRIPTION

See Thambugala et al. (2018).

NOTES

Microsphaeropsis ononidicola was introduced with the description of a saprobic strain (MFLUCC 15-0459) isolated from dead aerial stems of Ononis spinosa L. ( Fabaceae ) in Italy ( Thambugala et al. 2018). In the phylogenetic analyses of the present study ( Fig. 1 ), this species is distant from the Microsphaeropsis lineage and other genera in the Microsphaeropsis complex. Therefore, a new genus Heteromicrosphaeropsis M.Mehrabi-Koushki, K.D.Hyde & Jayaward., gen. nov. is introduced to accommodate this species. Nucleotide comparison of Heteromicrosphaeropsis M.Mehrabi-Koushki, K.D.Hyde & Jayaward. , gen. nov. with Microsphaeropsis species revealed a difference of 0.6% (3/521 bp) in the LSU region, 2.6% (11/431 bp) in the ITS and 11% (22/198 bp) in the tub 2. However, this new genus is morphologically similar to Microsphaeropsis but phylogenetically different.

Figures

FIG. 1. — The ML phylogenetic tree obtained from the combined LSU-ITS, tub2 and rpb2 sequence data of strains belonging to the Microsphaeropsis complex. The tree was rooted to Vacuiphoma ferulae L.W.Hou, L.Cai & Crous. Taxa retrieved or reclassified newly are shown with red dots. Bootstrap values obtained in maximum likelihood (ML) and maximum parsimony (MP) analyses ≥ 0.50% and Bayesian posterior probability values (BYPP) ≥ 0.90% are shown at the nodes, respectively. The scale bar shows the expected number of changes per site. T letter indicates type strains.