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Abstract Detail



Systematics Section/ASPT

Oldham , Karoline Alayne [1], Weeks, Andrea [2].

The Evolutionary History of Melampyrum lineare: A North American Species’ Place in an Otherwise Eurasian Genus.

Melampyrum lineare (Orobanchaceae) is the sole North American species of its genus, which comprises another 34 species in Eurasia. Very little is known about how M. lineare established its current distribution in North America or how it is related to the Eurasian members of its genus. Previous literature proposes two competing hypotheses: 1) M. lineare shares its most recent common ancestor with a European species, M. pratense; 2) M. lineare shares its most recent common ancestor with the Asian species M. arcuatum, now M. laxum var. arcuatum.  However, these hypotheses were based solely on morphological observations and do not consider DNA sequence data.  Comparison of ITS sequences from M. lineare and other members of the Rhinantheae tribe suggests that M. lineare is not sister to M. pratense. Rather, this analysis provides mixed support for the competing hypotheses of European versus Asian ancestry.


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1 - George Mason University, School of Systems Biology, 4400 University Drive, Exploratory Hall MS 3E1, Fairfax, VA, 22030
2 - George Mason University, 4400 University Drive MSN 5F2, Fairfax, VA, 22030, USA

Keywords:
Melampyrum
Orobanchaceae
Phylogeny
ITS.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PSY039
Abstract ID:257
Candidate for Awards:None


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