Molecular phylogeny and new taxa in the Archaeosporales (Glomeromycota): Ambispora fennica gen. sp. nov., Ambisporaceae fam. nov., and emendation of Archaeospora and Archaeosporaceae
- 24 February 2007
- journal article
- Published by Elsevier BV in Mycological Research
- Vol. 111 (2), 137-153
- https://doi.org/10.1016/j.mycres.2006.11.008
Abstract
The AM fungal family Archaeosporaceae and the genus Archaeospora are rendered paraphyletic by the relationship with the Geosiphonaceae. This problem led to a more detailed study of the Archaeosporales. Members of the Archaeosporaceae were described as forming both glomoid and acaulosporoid spores, or solely acaulosporoid spores. However, we found that Glomus callosum fell into the same phylogenetic clade as A. leptoticha and A. gerdemannii, but exclusively formed glomoid spores. To resolve these inconsistencies, a genus, Ambispora gen. nov., typified by Ambispora fennica sp. nov., is erected based on morphological evidence and SSU and ITS region rDNA data. Ambispora contains three species known to produce both acaulosporoid and glomoid spores: A. fennica, A. leptoticha comb. nov. (basionym G. leptotichum), and A. gerdemannii comb. nov. (basionym G. gerdemannii). Another species, A. callosa comb. nov. (basionym G. callosum), is known only from glomoid spores. Ambispora is placed in a new family, the Ambisporaceae fam. nov. The Archaeosporaceae is maintained with the type species, Archaeospora trappei (basionym Acaulospora trappei), along with Intraspora schenckii (basionym Entrophospora schenckii). Acaulospora nicolsonii, known only from acaulosporoid spores, is discussed and is considered likely to belong in the Ambisporaceae, but is retained within its present genus because of inadequate morphological information and a lack of molecular data.Keywords
This publication has 31 references indexed in Scilit:
- Species composition of arbuscular mycorrhizal fungi in two mountain meadows with differing management types and levels of plant biodiversityBiology and Fertility of Soils, 2005
- Detection of arbuscular mycorrhizal fungi,archaeospora leptoticha, and related species coloning plant roots by specific PCR primerSoil Science and Plant Nutrition, 2004
- Molecular Evidence for the Early Colonization of Land by Fungi and PlantsScience, 2001
- Two New Families of Glomales, Archaeosporaceae and Paraglomaceae, with Two New Genera Archaeospora and Paraglomus, Based on Concordant Molecular and Morphological CharactersMycologia, 2001
- Efficiency of the Neighbor-Joining Method in Reconstructing Deep and Shallow Evolutionary Relationships in Large PhylogeniesJournal of Molecular Evolution, 2000
- A New Species of Scutellospora with a Coiled Germination ShieldAnnals of Botany, 2000
- Arbuscular mycorrhizal fungi on adjacent semi-natural grasslands with different vegetation in JapanMycoscience, 1998
- Taxonomy of Acaulospora gerdemannii and Glomus leptotichum, synanamorphs of an arbuscular mycorrhizal fungus in GlomalesMycological Research, 1997
- Endogonaceous Mycorrhizal Endophytes in FloridaMycologia, 1979
- The origin of land plants: A matter of mycotrophismBiosystems, 1975