Rampant Gene Exchange Across a Strong Reproductive Barrier Between the Annual Sunflowers, Helianthus annuus and H. petiolaris

Y Yatabe, NC Kane, C Scotti-Saintagne… - Genetics, 2007 - academic.oup.com
Plant species may remain morphologically distinct despite gene exchange with congeners,
yet little is known about the genomewide pattern of introgression among species. Here we …

Genomic patterns of adaptive divergence between chromosomally differentiated sunflower species

JL Strasburg, C Scotti-Saintagne, I Scotti… - Molecular biology …, 2009 - academic.oup.com
Understanding the genetic mechanisms of speciation and basis of species differences is
among the most important challenges in evolutionary biology. Two questions of particular …

Genome scan of hybridizing sunflowers from Texas (Helianthus annuus and H. debilis) reveals asymmetric patterns of introgression and small islands of genomic …

M Scascitelli, KD Whitney, RA Randell… - Molecular …, 2010 - Wiley Online Library
Although the sexual transfer of genetic material between species (ie introgression) has been
documented in many groups of plants and animals, genome‐wide patterns of introgression …

MOLECULAR DEMOGRAPHIC HISTORY OF THE ANNUAL SUNFLOWERS HELIANTHUS ANNUUS AND H. PETIOLARIS—LARGE EFFECTIVE POPULATION …

JL Strasburg, LH Rieseberg - Evolution, 2008 - academic.oup.com
Hybridization between distinct species may lead to introgression of genes across species
boundaries, and this pattern can potentially persist for extended periods as long as selection …

Comparative genomic and population genetic analyses indicate highly porous genomes and high levels of gene flow between divergent Helianthus species

NC Kane, MG King, MS Barker, A Raduski… - …, 2009 - academic.oup.com
While speciation can be found in the presence of gene flow, it is not clear what impact this
gene flow has on genome-and range-wide patterns of differentiation. Here we examine …

Genetic architecture of species differences in annual sunflowers: implications for adaptive trait introgression

SC Kim, LH Rieseberg - Genetics, 1999 - academic.oup.com
Genetic architecture may profoundly influence the ability of adaptive traits to spread between
species via introgressive hybridization. Here, we examine the genomic location of …

Extensive chromosomal repatterning and the evolution of sterility barriers in hybrid sunflower species

Z Lai, T Nakazato, M Salmaso, JM Burke, S Tang… - Genetics, 2005 - academic.oup.com
New species may arise via hybridization and without a change in ploidy. This process,
termed homoploid hybrid speciation, is theoretically difficult because it requires the …

[HTML][HTML] Genomic islands of divergence are not affected by geography of speciation in sunflowers

S Renaut, CJ Grassa, S Yeaman, BT Moyers… - Nature …, 2013 - nature.com
Genomic studies of speciation often report the presence of highly differentiated genomic
regions interspersed within a milieu of weakly diverged loci. The formation of these …

Chromosomal Evolution and Patterns of Introgression in Helianthus

JG Barb, JE Bowers, S Renaut, JI Rey, SJ Knapp… - Genetics, 2014 - academic.oup.com
Abstract Knowledge of the nature and extent of karyotypic differences between species
provides insight into the evolutionary history of the genomes in question and, in the case of …

Hybrid zones and the genetic architecture of a barrier to gene flow between two sunflower species

LH Rieseberg, J Whitton, K Gardner - Genetics, 1999 - academic.oup.com
Genetic analyses of reproductive barriers represent one of the few methods by which
theories of speciation can be tested. However, genetic study is often restricted to model …