10.5061/DRYAD.CG32N
McDonald, Megan C.
Swiss Federal Institute of Technology in Zurich
Razavi, Mohammad
Iranian Research Institute of Plant Protection
Friesen, Timothy L.
North Dakota State University
Brunner, Patrick C.
Swiss Federal Institute of Technology in Zurich
McDonald, Bruce A.
Swiss Federal Institute of Technology in Zurich
Data from: Phylogenetic and population genetic analyses of Phaeosphaeria
nodorum and its close relatives indicate cryptic species and an origin in
the Fertile Crescent
Dryad
dataset
2012
Phaeosphaeria avenaria
Stagonospora nodorum
Species complex
Phaeosphaeria nodorum
2012-09-13T17:15:43Z
2012-09-13T17:15:43Z
en
https://doi.org/10.1016/j.fgb.2012.08.001
694030 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The origin of the fungal wheat pathogen Phaeosphaeria nodorum remains
unclear despite earlier intensive global population genetic and
phylogeographical studies. We sequenced 1,683 bp distributed across three
loci in 355 globally distributed Phaeosphaeria isolates, including 74
collected in Iran near the center of origin of wheat. We identified nine
phylogenetically distinct clades, including two previously unknown species
tentatively named P1 and P2 collected in Iran. Coalescent analysis
indicates that P1 and P2 are sister species of P. nodorum and the other
Phaeosphaeria species identified in our analysis. Two species, P. nodorum
and P. avenaria f. sp. tritici 1 (Pat1), comprised ∼85% of the sampled
isolates, making them the dominant wheat-infecting pathogens within the
species complex. We designed a PCR-RFLP assay to distinguish P. nodorum
from Pat1. Approximately 4% of P. nodorum and Pat1 isolates showed
evidence of hybridization. Measures of private allelic richness at SSR and
sequence loci suggest that the center of origin of P. nodorum coincides
with its host in the Fertile Crescent. We hypothesize that the origin of
this species complex is also in the Fertile Crescent, with four species
out of nine found exclusively in the Iranian collections.
Coalescent Tree Model for Phaeospaheria spp. ComplexThis is a ready to
execute XML file generated in Beauti that will run in the program *BEAST.
It contains the full dataset, including all isolates and 3 separate loci
for the referenced paper. Isolates are grouped into taxa according to
species classification. This grouping allows the TMRCA to be estimated for
specific taxa or groups of taxa.All_isolates_GTRNucmodels.xml
Iran
China
Europe
Australia
Central Asia
North America