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 …

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 …

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 …

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 …

Multiple chromosomal inversions contribute to adaptive divergence of a dune sunflower ecotype

K Huang, RL Andrew, GL Owens, KL Ostevik… - Molecular …, 2020 - Wiley Online Library
Both models and case studies suggest that chromosomal inversions can facilitate adaptation
and speciation in the presence of gene flow by suppressing recombination between locally …

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 …

Rapid hybrid speciation in wild sunflowers

MC Ungerer, SJE Baird, J Pan… - Proceedings of the …, 1998 - National Acad Sciences
Hybrid or “recombinational” speciation refers to the origin of a new homoploid species via
hybridization between chromosomally or genetically divergent parental species. Theory …

Ancestral reconstruction of karyotypes reveals an exceptional rate of nonrandom chromosomal evolution in sunflower

KL Ostevik, K Samuk, LH Rieseberg - Genetics, 2020 - academic.oup.com
Mapping the chromosomal rearrangements between species can inform our understanding
of genome evolution, reproductive isolation, and speciation. Here, we present a novel …

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 …

Patterns of nucleotide diversity in wild and cultivated sunflower

A Liu, JM Burke - Genetics, 2006 - academic.oup.com
Interest in the level and organization of nucleotide diversity in domesticated plant lineages
has recently been motivated by the potential for using association-based mapping …