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Duplication of floral regulatory genes in the Lamiales

Aagaard, Jan E ; Olmstead, Richard G ; Willis, John H ; Phillips, Patrick C

American journal of botany, 2005-08, Vol.92 (8), p.1284-1293 [Peer Reviewed Journal]

United States: Botanical Soc America

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Title:
Duplication of floral regulatory genes in the Lamiales
Author: Aagaard, Jan E ; Olmstead, Richard G ; Willis, John H ; Phillips, Patrick C
Subjects: Angiosperms ; Antirrhinum majus ; Biodiversity ; Biological taxonomies ; Complementary DNA ; floral regulatory genes ; flowering ; flowers ; Flowers & plants ; gene duplication ; Genes ; Genetics ; Genetics and Molecular Biology ; genome ; Genomics ; Homeobox genes ; Lamiales ; molecular systematics ; Phylogenetics ; phylogeny ; plant morphology ; Plants ; regulator genes ; Taxa ; Topology ; whole genome duplication
Is Part Of: American journal of botany, 2005-08, Vol.92 (8), p.1284-1293
Notes: http://www.amjbot.org/
This work was supported by an NSF IGERT predoctoral fellowship and NSF dissertation improvement grant (DEB‐0105176) to J. E. A., an NSF grant (DEB‐0090313) to R. G. O., an NSF grant (DEB‐0075704) to J. H. W., and an NIH grant to P. C. P. (GM54185).
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Description: Duplication of some floral regulatory genes has occurred repeatedly in angiosperms, whereas others are thought to be single-copy in most lineages. We selected three genes that interact in a pathway regulating floral development conserved among higher tricolpates (LFY/FLO, UFO/FIM, and AP3/DEF) and screened for copy number among families of Lamiales that are closely related to the model species Antirrhinum majus. We show that two of three genes have duplicated at least twice in the Lamiales. Phylogenetic analyses of paralogs suggest that an ancient whole genome duplication shared among many families of Lamiales occurred after the ancestor of these families diverged from the lineage leading to Veronicaceae (including the single-copy species A. majus). Duplication is consistent with previous patterns among angiosperm lineages for AP3/DEF, but this is the first report of functional duplicate copies of LFY/FLO outside of tetraploid species. We propose Lamiales taxa will be good models for understanding mechanisms of duplicate gene preservation and how floral regulatory genes may contribute to morphological diversity.
Publisher: United States: Botanical Soc America
Language: English

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Duplication of floral regulatory genes in the Lamiales

Aagaard, Jan E ; Olmstead, Richard G ; Willis, John H ; Phillips, Patrick C

United States: Botanical Soc America

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