Claim · model-written summary
Sequenced Bruce Peninsula plants with sister morphology had H. autumnale sequences, contradicting a proposed sister lineage.
- Taxon
- H. autumnale
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Helenium autumnalee0 - Outcome
- H. autumnale sequencese0
- Setting
- Bruce Peninsula, Ontario, Canadae0
Verbatim
e0“The presence of a putative sister lineage to H. virginicum thought to exist on the Bruce Peninsula, Ontario, Canada, was not supported after sequencing 36 plants with the sister morphology that grew there along 18 km of beach fens and finding they had H. autumnale sequences”
Title
Biogeography of ITS Variation in the Helenium autumnale (Asteraceae) Species Complex
Skip Williams; Kelly Bezold; John S. Knox; et al. Systematic Botany 2021. doi:10.1600/036364421x16128061189512
Other claims from this paper (8)
- Method / resource ITS sequences confirmed most Helenium species identifications.
- Observation ITS sequences supported the first Helenium virginicum population in Indiana.
- Observation The origin of the Indiana H. virginicum population remains uncertain.
- Observation Intraspecific sequence variation showed fine-scale biogeographic patterns mostly in H. autumnale.
- Observation Different base site polymorphisms were centered in northern North America and the Missouri Ozarks.
- Observation DNA evidence indicated hybridization between Helenium species in Missouri.
- Mechanism The authors hypothesize H. autumnale may be a compilospecies with incomplete lineage sorting.
- Recommendation The authors encourage more ITS sampling to resolve emerging Helenium lineages.