title: The online database MaarjAM reveals global and ecosystemic distribution patterns in arbuscular mycorrhizal fungi (Glomeromycota).
abstract: • Here, we describe a new database, MaarjAM, that summarizes publicly available Glomeromycota DNA sequence data and associated metadata. The goal of the database is to facilitate the description of distribution and richness patterns in this group of fungi. • Small subunit (SSU) rRNA gene sequences and available metadata were collated from all suitable taxonomic and ecological publications. These data have been made accessible in an open-access database (http://maarjam.botany.ut.ee). • Two hundred and eighty-two SSU rRNA gene virtual taxa (VT) were described based on a comprehensive phylogenetic analysis of all collated Glomeromycota sequences. Two-thirds of VT showed limited distribution ranges, occurring in single current or historic continents or climatic zones. Those VT that associated with a taxonomically wide range of host plants also tended to have a wide geographical distribution, and vice versa. No relationships were detected between VT richness and latitude, elevation or vascular plant richness. • The collated Glomeromycota molecular diversity data suggest limited distribution ranges in most Glomeromycota taxa and a positive relationship between the width of a taxon's geographical range and its host taxonomic range. Inconsistencies between molecular and traditional taxonomy of Glomeromycota, and shortage of data from major continents and ecosystems, are highlighted.
authors.affiliation: Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 40 Lai St., 51005 Tartu, Estonia. maarja.opik@ut.ee
authors.forename: M
authors.initials: M
authors.lastname: Opik
authors.forename: A
authors.initials: A
authors.lastname: Vanatoa
authors.forename: E
authors.initials: E
authors.lastname: Vanatoa
authors.forename: M
authors.initials: M
authors.lastname: Moora
authors.forename: J
authors.initials: J
authors.lastname: Davison
authors.forename: J M
authors.initials: JM
authors.lastname: Kalwij
authors.forename: U
authors.initials: U
authors.lastname: Reier
authors.forename: M
authors.initials: M
authors.lastname: Zobel
mesh_terms: D016000:Cluster Analysis; D030541:Databases, Genetic; D017753:Ecosystem; D005843:Geography; D055137:Glomeromycota / Q000145:classification* / Q000235:genetics*; D020407:Internet; D038821:Mycorrhizae / Q000145:classification* / Q000235:genetics*; D010802:Phylogeny; D054679:Ribosome Subunits, Small / Q000235:genetics