Lineages of Silene nutans developed rapid, strong, asymmetric postzygotic reproductive isolation in allopatry

Evolution ◽  
2017 ◽  
Vol 71 (6) ◽  
pp. 1519-1531 ◽  
Author(s):  
Hélène Martin ◽  
Pascal Touzet ◽  
Mathilde Dufay ◽  
Cécile Godé ◽  
Eric Schmitt ◽  
...  
Keyword(s):  
Reproductive Isolation ◽  
Postzygotic Reproductive Isolation ◽  
Silene Nutans

Postzygotic reproductive isolation among three Saccharomyces yeast species

Yeast ◽  
2021 ◽  
Author(s):  
Kousuke Toyomura ◽  
Taisuke Hisatomi
Keyword(s):  
Reproductive Isolation ◽  
Yeast Species ◽  
Postzygotic Reproductive Isolation ◽  
Saccharomyces Yeast

scholarly journals How Can Satellite DNA Divergence Cause Reproductive Isolation? Let Us Count the Chromosomal Ways

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Patrick M. Ferree ◽  
Satyaki Prasad
Keyword(s):  
Reproductive Isolation ◽  
Developmental Stages ◽  
Rapid Evolution ◽  
Model Organisms ◽  
Cellular Mechanisms ◽  
Closely Related Species ◽  
Heterochromatin Formation ◽  
Interspecies Hybrids ◽  
Postzygotic Reproductive Isolation ◽  
And Function

Satellites are one of the most enigmatic parts of the eukaryotic genome. These highly repetitive, noncoding sequences make up as much as half or more of the genomic content and are known to play essential roles in chromosome segregation during meiosis and mitosis, yet they evolve rapidly between closely related species. Research over the last several decades has revealed that satellite divergence can serve as a formidable reproductive barrier between sibling species. Here we highlight several key studies on Drosophila and other model organisms demonstrating deleterious effects of satellites and their rapid evolution on the structure and function of chromosomes in interspecies hybrids. These studies demonstrate that satellites can impact chromosomes at a number of different developmental stages and through distinct cellular mechanisms, including heterochromatin formation. These findings have important implications for how loci that cause postzygotic reproductive isolation are viewed.

scholarly journals Genetic mechanisms of postzygotic reproductive isolation: An epistatic network in rice

2013 ◽  
Vol 63 (4) ◽  
pp. 359-366 ◽  
Author(s):  
Takahiko Kubo
Keyword(s):  
Reproductive Isolation ◽  
Postzygotic Reproductive Isolation ◽  
Genetic Mechanisms

scholarly journals The limits to parapatric speciation 3: evolution of strong reproductive isolation in presence of gene flow despite limited ecological differentiation

2020 ◽  
Vol 375 (1806) ◽  
pp. 20190532 ◽  
Author(s):  
Alexandre Blanckaert ◽  
Claudia Bank ◽  
Joachim Hermisson
Keyword(s):  
Gene Flow ◽  
Reproductive Isolation ◽  
Local Adaptation ◽  
Theme Issue ◽  
Genetic Barrier ◽  
Incipient Species ◽  
Postzygotic Reproductive Isolation ◽  
Minimal Configuration ◽  
Parapatric Speciation ◽  
Two Populations

Gene flow tends to impede the accumulation of genetic divergence. Here, we determine the limits for the evolution of postzygotic reproductive isolation in a model of two populations that are connected by gene flow. We consider two selective mechanisms for the creation and maintenance of a genetic barrier: local adaptation leads to divergence among incipient species due to selection against migrants, and Dobzhansky–Muller incompatibilities (DMIs) reinforce the genetic barrier through selection against hybrids. In particular, we are interested in the maximum strength of the barrier under a limited amount of local adaptation, a challenge that many incipient species may initially face. We first confirm that with classical two-locus DMIs, the maximum amount of local adaptation is indeed a limit to the strength of a genetic barrier. However, with three or more loci and cryptic epistasis, this limit holds no longer. In particular, we identify a minimal configuration of three epistatically interacting mutations that is sufficient to confer strong reproductive isolation. This article is part of the theme issue ‘Towards the completion of speciation: the evolution of reproductive isolation beyond the first barriers’.

scholarly journals Limited intrinsic postzygotic reproductive isolation despite chromosomal rearrangements between closely related sympatric species of small ermine moths (Lepidoptera: Yponomeutidae)

2019 ◽  
Vol 128 (1) ◽  
pp. 44-58 ◽  
Author(s):  
Katerina H Hora ◽  
František Marec ◽  
Peter Roessingh ◽  
Steph B J Menken
Keyword(s):  
Reproductive Isolation ◽  
Parental Species ◽  
Meiotic Chromosome ◽  
Chromosomal Rearrangements ◽  
Sympatric Species ◽  
Hybrid Fitness ◽  
New Host ◽  
Closely Related Species ◽  
Postzygotic Reproductive Isolation

Abstract In evolutionarily young species and sympatric host races of phytophagous insects, postzygotic incompatibility is often not yet fully developed, but reduced fitness of hybrids is thought to facilitate further divergence. However, empirical evidence supporting this hypothesis is limited. To assess the role of reduced hybrid fitness, we studied meiosis and fertility in hybrids of two closely related small ermine moths, Yponomeuta padella and Yponomeuta cagnagella, and determined the extent of intrinsic postzygotic reproductive isolation. We found extensive rearrangements between the karyotypes of the two species and irregularities in meiotic chromosome pairing in their hybrids. The fertility of reciprocal F1 and, surprisingly, also of backcrosses with both parental species was not significantly decreased compared with intraspecific offspring. The results indicate that intrinsic postzygotic reproductive isolation between these closely related species is limited. We conclude that the observed chromosomal rearrangements are probably not the result of an accumulation of postzygotic incompatibilities preventing hybridization. Alternative explanations, such as adaptation to new host plants, are discussed.

The nature of interactions that contribute to postzygotic reproductive isolation in hybrid copepods

Genetica ◽  
2010 ◽  
Vol 139 (5) ◽  
pp. 575-588 ◽  
Author(s):  
Christopher S. Willett
Keyword(s):  
Reproductive Isolation ◽  
Postzygotic Reproductive Isolation

scholarly journals GENETIC VARIATION FOR POSTZYGOTIC REPRODUCTIVE ISOLATION BETWEEN CAENORHABDITIS BRIGGSAE AND CAENORHABDITIS SP. 9

Evolution ◽  
2011 ◽  
Vol 66 (4) ◽  
pp. 1180-1195 ◽  
Author(s):  
Joanna L. Kozlowska ◽  
Abeer R. Ahmad ◽  
Elnaz Jahesh ◽  
Asher D. Cutter
Keyword(s):  
Genetic Variation ◽  
Reproductive Isolation ◽  
Caenorhabditis Briggsae ◽  
Postzygotic Reproductive Isolation

Lack of early laboratory postzygotic reproductive isolation between two ecotypes of Littorina saxatilis (Mollusca, Gastropoda) showing strong premating sexual isolation

Hydrobiologia ◽  
2011 ◽  
Vol 675 (1) ◽  
pp. 13-18 ◽  
Author(s):  
M. Saura ◽  
M. Martínez-Fernández ◽  
M. J. Rivas ◽  
A. Caballero ◽  
E. Rolán-Alvarez
Keyword(s):  
Reproductive Isolation ◽  
Sexual Isolation ◽  
Littorina Saxatilis ◽  
Postzygotic Reproductive Isolation

scholarly journals speciation through asexuality in fish: postzygotic reproductive isolation may be completed in spite of fertility of hybrids

2015 ◽  
Vol 2 ◽  
Author(s):  
Janko Karel ◽  
Paces Jan ◽  
Wilkinson Herbots Hilde ◽  
Da Costa Rui ◽  
Drozd Pavel ◽  
...  
Keyword(s):  
Reproductive Isolation ◽  
Postzygotic Reproductive Isolation
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