A Duplication of gcyc Predates Divergence Within Tribe Coronanthereae (Gesneriaceae): Phylogenetic Analysis and Evolution

James F. Smith; Minde M. Funke; V. L. Woo

doi:10.1007/s00606-006-0445-6

A Duplication of gcyc Predates Divergence Within Tribe Coronanthereae (Gesneriaceae): Phylogenetic Analysis and Evolution

James F. Smith, Minde M. Funke, V. L. Woo

Department of Biological Sciences

Research output: Contribution to journal › Article › peer-review

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Abstract

Recent investigations in Gesneriaceae have indicated that the cycloidea homolog, g cyc , remains functional at the DNA level and rates of sequence divergence in this gene are not statistically different across all taxa regardless of floral symmetry. A duplication of gcyc has been detected within Coronanthereae, a tribe that has phylogenetic affinities to subfamily Gesnerioideae and includes two genera with radially symmetrical corollas. Duplication of gcyc has been detected in all Coronanthereae except Sarmienta . All paralogs appear functional at the DNA level. Likewise, there is no increased sequence divergence between the two copies, nor between species with radially symmetrical flowers to those with bilateral symmetry. The duplication of gcyc in Coronanthereae is most likely a result of polyploidy since Coronanthereae have the highest chromosome counts of all Gesneriaceae.

Original language	American English
Journal	Plant Systematics and Evolution
DOIs	https://doi.org/10.1007/s00606-006-0445-6
State	Published - 1 Oct 2006

Keywords

Coronanthereae
Gesneriaceae
floral symmetry
gcyc
paralogs
phylogeny
polyploidy

EGS Disciplines

Biology

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http://dx.doi.org/10.1007/s00606-006-0445-6

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title = "A Duplication of gcyc Predates Divergence Within Tribe Coronanthereae (Gesneriaceae): Phylogenetic Analysis and Evolution",

abstract = " Recent investigations in Gesneriaceae have indicated that the cycloidea homolog, g cyc , remains functional at the DNA level and rates of sequence divergence in this gene are not statistically different across all taxa regardless of floral symmetry. A duplication of gcyc has been detected within Coronanthereae, a tribe that has phylogenetic affinities to subfamily Gesnerioideae and includes two genera with radially symmetrical corollas. Duplication of gcyc has been detected in all Coronanthereae except Sarmienta . All paralogs appear functional at the DNA level. Likewise, there is no increased sequence divergence between the two copies, nor between species with radially symmetrical flowers to those with bilateral symmetry. The duplication of gcyc in Coronanthereae is most likely a result of polyploidy since Coronanthereae have the highest chromosome counts of all Gesneriaceae.",

keywords = "Coronanthereae, Gesneriaceae, floral symmetry, gcyc, paralogs, phylogeny, polyploidy",

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TY - JOUR

T1 - A Duplication of gcyc Predates Divergence Within Tribe Coronanthereae (Gesneriaceae): Phylogenetic Analysis and Evolution

AU - Smith, James F.

AU - Funke, Minde M.

AU - Woo, V. L.

PY - 2006/10/1

Y1 - 2006/10/1

N2 - Recent investigations in Gesneriaceae have indicated that the cycloidea homolog, g cyc , remains functional at the DNA level and rates of sequence divergence in this gene are not statistically different across all taxa regardless of floral symmetry. A duplication of gcyc has been detected within Coronanthereae, a tribe that has phylogenetic affinities to subfamily Gesnerioideae and includes two genera with radially symmetrical corollas. Duplication of gcyc has been detected in all Coronanthereae except Sarmienta . All paralogs appear functional at the DNA level. Likewise, there is no increased sequence divergence between the two copies, nor between species with radially symmetrical flowers to those with bilateral symmetry. The duplication of gcyc in Coronanthereae is most likely a result of polyploidy since Coronanthereae have the highest chromosome counts of all Gesneriaceae.

AB - Recent investigations in Gesneriaceae have indicated that the cycloidea homolog, g cyc , remains functional at the DNA level and rates of sequence divergence in this gene are not statistically different across all taxa regardless of floral symmetry. A duplication of gcyc has been detected within Coronanthereae, a tribe that has phylogenetic affinities to subfamily Gesnerioideae and includes two genera with radially symmetrical corollas. Duplication of gcyc has been detected in all Coronanthereae except Sarmienta . All paralogs appear functional at the DNA level. Likewise, there is no increased sequence divergence between the two copies, nor between species with radially symmetrical flowers to those with bilateral symmetry. The duplication of gcyc in Coronanthereae is most likely a result of polyploidy since Coronanthereae have the highest chromosome counts of all Gesneriaceae.

KW - Coronanthereae

KW - Gesneriaceae

KW - floral symmetry

KW - gcyc

KW - paralogs

KW - phylogeny

KW - polyploidy

UR - https://scholarworks.boisestate.edu/bio_facpubs/91

UR - http://dx.doi.org/10.1007/s00606-006-0445-6

U2 - 10.1007/s00606-006-0445-6

DO - 10.1007/s00606-006-0445-6

M3 - Article

JO - Plant Systematics and Evolution

JF - Plant Systematics and Evolution

ER -

A Duplication of gcyc Predates Divergence Within Tribe Coronanthereae (Gesneriaceae): Phylogenetic Analysis and Evolution

Abstract

Keywords

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