Molecular Phylogenetics and Taxonomy of the Genus Boechera and Related Genera (Brassicaceae: Boechereae)

Autor:	Michael D. Windham, Ihsan A. Al-Shehbaz, Patrick J. Alexander, C. Donovan Bailey, James B. Beck, Loreen Allphin
Rok vydání:	2013
Předmět:	Boechera biology Plant Science biology.organism_classification Taxon Genus Evolutionary biology Polyphyly Molecular phylogenetics Botany Genetics Taxonomy (biology) Hybrid speciation Clade Ecology Evolution Behavior and Systematics
Zdroj:	Systematic Botany. 38:192-209
ISSN:	1548-2324 0363-6445
DOI:	10.1600/036364413x661917
Popis:	Boechera (Brassicaceae) is a diverse genus of ±70 sexual diploid species and numerous apomictic hybrids concentrated in western North America. It is the largest genus in tribe Boechereae, which also includes seven other small genera. Boechera is closely related to Arabidopsis and is becoming a model genus for diverse studies, focusing particularly on apomixis and hybrid speciation. As part of an ongoing effort to clarify the taxonomy of the group, we present phylogenetic analyses of Boechereae, including all genera of the tribe and most of the sexual diploid species of Boechera. Ten loci are used, including two plastid loci, nrDNA ITS, and seven low-copy nuclear loci. These analyses indicate that Boechera, as currently circumscribed, is polyphyletic, comprising three main clades. Eastern North American species previously assigned to Boechera form a distinct clade with the Asian taxon Borodinia macrophylla and are herein transferred to the genus Borodinia, resulting in seven new combinations (Boro...
Databáze:	OpenAIRE
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