Glomus chinense and Dominikia gansuensis, two new Glomeraceae species of arbuscular mycorrhizal fungi from high altitude in the Tibetan Plateau

Two glomoid spore-producing arbuscular mycorrhizal fungi were grown in single-species cultures that established from soil-borne spores collected high altitude (2800 m a.s.l.) of Tibet Plateau, China. Phylogenetic analyses performed with sequences nuclear rDNA (spanning the partial small subunit, whole internal transcribed spacer, and large subunit segment; 18S-ITS-28S) largest RNA polymerase II (RPB1) gene. Morphological phylogenetic indicated two are undescribed species genera Glomus Dominikia. The first fungus, described here as G. chinense sp. nov., forms singly or loose clusters. orange-yellow to dark brown, globose, (47–)64(–93) μm diam. Dominikia gansuensis nov. produces glomerocarps pale yellow yellow-brown, (20–)47(–86) diam spores. spore wall both consists three layers. Both differ clearly morphology phylogeny their closest relatives, which atlanticum ibericum, D. glomerocarpica, respectively.