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Titolo:
Glomus, the largest genus of the arbuscular mycorrhizal fungi (Glomales), is nonmonophyletic
Autore:
Schwarzott, D; Walker, C; Schussler, A;
Indirizzi:
Tech Univ Darmstadt, Inst Bot, D-64287 Darmstadt, Germany Tech Univ Darmstadt Darmstadt Germany D-64287 D-64287 Darmstadt, Germany Bournemouth Univ, Sch Conservat Sci, Poole BH12 5BB, Dorset, England Bournemouth Univ Poole Dorset England BH12 5BB BH12 5BB, Dorset, England
Titolo Testata:
MOLECULAR PHYLOGENETICS AND EVOLUTION
fascicolo: 2, volume: 21, anno: 2001,
pagine: 190 - 197
SICI:
1055-7903(200111)21:2<190:GTLGOT>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENDOMYCORRHIZAL FUNGI; RNA; SYSTEMATICS; SEQUENCES;
Keywords:
arbuscular mycorrhiza; Glomales; Glozims; phylogeny; SSU rRNA; taxonomy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Schwarzott, D Tech Univ Darmstadt, Inst Bot, Schnittspahnstr 10, D-64287 Darmstadt, Germany Tech Univ Darmstadt Schnittspahnstr 10 Darmstadt GermanyD-64287
Citazione:
D. Schwarzott et al., "Glomus, the largest genus of the arbuscular mycorrhizal fungi (Glomales), is nonmonophyletic", MOL PHYL EV, 21(2), 2001, pp. 190-197

Abstract

Arbuscular mycorrhizal (AM) fungi form a widespread and ecologically important symbiosis with plants in the land ecosystem. The phylogeny of the largest presently accepted genus, Glomus, of the monogeneric family Glomaceae (Glomales; AM fungi) was analyzed. Phylogenetic trees were computed from nearly full-length SSU rRNA gene sequences of 30 isolates, and show that "Glomus" is not monophyletic. Even after the very recent separation of Archaeospora and Paraglomus from "Glomus," the genus further separates into two suprageneric clades. One of them diverges further into two subclades, differingby phylogenetic distances equivalent to family level. The other, comprising Glomus versiforme, G. spurcum and a species morphologically similar to G.etunicatum, is not closely related to the Glomaceae, but clusters togetherwith the Acaulosporaceae and Gigasporaceae in a monophyletic clade. Based on the molecular evidence, a new family, separate from the Glomaceae, is required to accommodate this group of organisms, initially named Diversisporaceae fam. ined. The current taxonomic concept of the recently erected family Archaeosporaceae also requires future emendation, because Geosiphon pyriformis (Geosiphonaceae) renders Archaeospora, the sole genus formally included in this family, paraphyletic. The suborders Gigasporineae and Glominaeaeare not congruent with the natural phylogeny of the AM fungi. Our data necessitate a general reexamination of the generic concepts within the Glomales. In addition to the new family structure hypothesized herein, establishment of at least three new genera will be necessary in the future. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 22:37:12