Molecular phylogeny supports a Northern Hemisphere origin of Golovinomyces ( Ascomycota: Erysiphales)
Golovinomyces is a strictly herb-parasitic genus in the Erysiphaceae. Host–parasite co-speciation was reported recently between the genus Golovinomyces and Asteraceae from molecular phylogenetic analyses. The Asteraceae originated in South America and latterly expanded their geographic distribution...
Gespeichert in:
Veröffentlicht in: | Mycological research 2006-09, Vol.110 (9), p.1093-1101 |
---|---|
Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Golovinomyces is a strictly herb-parasitic genus in the
Erysiphaceae. Host–parasite co-speciation was reported recently between the genus
Golovinomyces and
Asteraceae from molecular phylogenetic analyses. The
Asteraceae originated in South America and latterly expanded their geographic distribution into the Northern Hemisphere. If the co-speciation between
Golovinomyces and
Asteraceae originated in South America, the geographic origin of
Golovinomyces could be assumed to be South America. To address this question,
Golovinomyces species from hosts of the tribe
Mutisieae, an asteraceous tribe endemic to South America, were collected and the ITS and 28S rDNA regions sequenced. Results indicate that
Oidium mutisiae and
Golovinomyces leuceriae isolated from the
Mutisieae do not belong at the base of the
Golovinomyces tree. Instead, they are situated separately within two different clades of
Golovinomyces isolates from the Northern Hemisphere. Therefore, the tribe
Mutisieae is not the most early host of
Golovinomyces. Present results suggest that
Golovinomyces originated in the Northern Hemisphere, and not in South America. The new species
Oidium reginae for the previous
O. mutisiae on
Mutisia decurrens is proposed. |
---|---|
ISSN: | 0953-7562 1469-8102 |
DOI: | 10.1016/j.mycres.2006.07.005 |