A comprehensive molecular phylogeny of the Mortierellales (Mortierellomycotina) based on nuclear ribosomal DNA

• Published in: Persoonia Vol. 30; no. 1; pp. 77 - 93
• Main Authors: Wagner, L, Stielow, B, Hoffmann, K, Petkovits, T, Papp, T, Vágvölgyi, C, de Hoog, G S, Verkley, G, Voigt, K
• Format: Journal Article
• Language: English
• Published: Netherlands Nationaal Herbarium Nederland 01-06-2013; Naturalis Biodiversity Center & Centraallbureau voor Schimmelcultures
• Subjects: Internal Transcribed Spacer; LARGE SUBUNIT RIBOSOMAL DNA; Taxonomic Revision; Zygomycetes; Zygomycota; taxonomic revision; Zygomycetes; Zygomycota; large subunit ribosomal DNA; internal transcribed spacer
• ISSN: 0031-5850; 1878-9080
• DOI: 10.3767/003158513X666268

The basal fungal order Mortierellales constitutes one of the largest orders in the basal lineages. This group consists of one family and six genera. Most species are saprobic soil inhabiting fungi with the ability of diverse biotransformations or the accumulation of unsaturated
fatty acids, making them attractive for biotechnological applications. Only few studies exist aiming at the revelation of the evolutionary relationships of this interesting fungal group. This study includes the largest dataset of LSU and ITS sequences for more than 400 specimens containing
63 type or reference strains. Based on a LSU phylogram, fungal groups were defined and evaluated using ITS sequences and morphological features. Traditional morphology-based classification schemes were rejected, because the morphology of the Mortierellales seems to depend on culture
conditions, a fact, which makes the identification of synapomorphic characters tedious. This study belongs to the most comprehensive molecular phylogenetic analyses for the Mortierellales up to date and reveals unresolved species and species complexes.