Cryptic host-specific diversity among western hemisphere broomrapes (Orobanche s.l., Orobanchaceae).

ABSTRACT:

Background and aims

The broomrapes, Orobanche sensu lato (Orobanchaceae), are common root parasites found across Eurasia, Africa and the Americas. All species native to the western hemisphere, recognized as Orobanche sections Gymnocaulis and Nothaphyllon, form a clade that has a centre of diversity in western North America, but also includes four disjunct species in central and southern South America. The wide ecological distribution coupled with moderate taxonomic diversity make this clade a valuable model system for studying the role, if any, of host-switching in driving the diversification of plant parasites.

Methods

Two spacer regions of ribosomal nuclear DNA (ITS + ETS), three plastid regions and one low-copy nuclear gene were sampled from 163 exemplars of Orobanche fro

SUBMITTER: Schneider AC 

PROVIDER: S-EPMC5091723 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature