A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity.

A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity. Research Abstract Details 

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A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity. Abstract Text:

Nuclear ribosomal DNA (ITS and ETS) sequences from 39 native Californian (USA) Allium species and congeners were combined with 154 ITS sequences available on GenBank to develop a global Allium phylogeny with the simultaneous goals of investigating the evolutionary history (monophyly) of Allium in the Californian center of diversity and exploring patterns of adaptation to serpentine soils. Phylogenies constructed with ITS alone or ITS in combination with ETS provided sufficient resolution for investigating evolutionary relationships among species. The ITS region alone was sufficient to resolve the deeper relationships in North American species. Addition of a second marker (ETS) further supports the phylogenetic placements of the North American species and adds resolution within subgenus Amerallium, a clade containing many Californian endemics. Within the global phylogeny, the native North American species were found to be monophyletic, with the exception of Allium tricoccum and Allium schoenoprasum. All native Californian species included in the analysis fell into a monophyletic subgenus Amerallium section Lophioprason, although endemic Californian species were not monophyletic due to the inclusion of species with ranges extending beyond the California Floristic Province. The molecular phylogeny strongly supports previous morphology-based taxonomic groupings. Based on our results, serpentine adaptation appears to have occurred multiple times within section Lophioprason, while the ancestor of the Californian center of diversity may not have been serpentine-adapted.

A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity. Publishing Authors By Initials

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A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Molecular phylogenetics and evolution

VOLUME: 47

Page Numbers: 1157-72

Journal Abbreviation: Mol. Phylogenet. Evol.

ISSN: 1055-7903

DAY: 15

MONTH: 12

YEAR: 2007

A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity. Information

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LANGUAGE: eng

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Grant and Affiliation Information for A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity.

AFFILIATION: Department of Plant and Microbial Biology, University of California, Berkeley, 111 Koshland Hall, MC 3102, Berkeley, CA 94720, USA.

Country: United States

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MEDLINETA: Mol Phylogenet Evol

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