ArticleHeredity2014
Interspecific crossing and genetic mapping reveal intrinsic genomic incompatibility between two Senecio species that form a hybrid zone on Mount Etna, Sicily.
Article in Heredity, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed.
- Article
- Article
- Rapid evolution of hybrid breakdown following recent divergence with gene flow in Senecio species on Mount Etna, Sicily.Heredity · 2023Article
- The role of recombination landscape in species hybridisation and speciation.Frontiers in plant science · 2023Review
- Parent-offspring genotyped trios unravelling genomic regions with gametic and genotypic epistatic transmission bias on the cattle genome.Frontiers in genetics · 2023Article
- Novel Approaches for Species Concepts and Delimitation in Polyploids and Hybrids.Plants (Basel, Switzerland) · 2022Review
- The Role of Interspecific Hybridisation in Adaptation and Speciation: Insights From Studies inFrontiers in plant science · 2022Review
- Recurrent breakdown and rebalance of segregation distortion in the genomes: battle for the transmission advantage.aBIOTECH · 2020Review
- Introgression reshapes recombination distribution in grapevine interspecific hybrids.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2019Article
- Completing the hybridization triangle: the inheritance of genetic incompatibilities during homoploid hybrid speciation in ragworts (AoB PLANTS · 2019Article
- Patterns of Transmission Ratio Distortion in Interspecific Lettuce Hybrids Reveal a Sex-Independent Gametophytic Barrier.Genetics · 2019Article
- The Limits to Parapatric Speciation II: Strengthening a Preexisting Genetic Barrier to Gene Flow in Parapatry.Genetics · 2018Article
- Maintaining their genetic distance: Little evidence for introgression between widely hybridizing species of Geum with contrasting mating systems.Molecular ecology · 2018Article
- Linkage Map ofG3 (Bethesda, Md.) · 2017Article
- Growth increase of Arabidopsis by forced expression of rice 45S rRNA gene.Plant cell reports · 2017Article
- Maintenance of Species Boundaries Despite Ongoing Gene Flow in Ragworts.Genome biology and evolution · 2016Article
- Genomic architecture of phenotypic divergence between two hybridizing plant species along an elevational gradient.AoB PLANTS · 2016Article
- Altitudinal gradients, plant hybrid zones and evolutionary novelty.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2014Review
- Contemporary and future studies in plant speciation, morphological/floral evolution and polyploidy: honouring the scientific contributions of Leslie D. Gottlieb to plant evolutionary biology.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2014Article
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3 authors.
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Abstract
Studies of hybridizing species can reveal much about the genetic basis and maintenance of species divergence in the face of gene flow. Here we report a genetic segregation and linkage analysis conducted on F2 progeny of a reciprocal cross between Senecio aethnensis and S. chrysanthemifolius that form a hybrid zone on Mount Etna, Sicily, aimed at determining the genetic basis of intrinsic hybrid barriers between them. Significant transmission ratio distortion (TRD) was detected at 34 (∼27%) of 127 marker loci located in nine distinct clusters across seven of the ten linkage groups detected, indicating genomic incompatibility between the species. TRD at these loci could not be attributed entirely to post-zygotic selective loss of F2 individuals that failed to germinate or flower (16.7%). At four loci tests indicated that pre-zygotic events, such as meiotic drive in F1 parents or gametophytic selection, contributed to TRD. Additional tests revealed that cytonuclear incompatibility contributed to TRD at five loci, Bateson-Dobzhansky-Muller (BDM) incompatibilities involving epistatic interactions between loci contributed to TRD at four loci, and underdominance (heterozygote disadvantage) was a possible cause of TRD at one locus. Major chromosomal rearrangements were probably not a cause of interspecific incompatibility at the scale that could be examined with current map marker density. Intrinsic genomic incompatibility between S. aethnensis and S. chrysanthemifolius revealed by TRD across multiple genomic regions in early-generation hybrids is likely to impact the genetic structure of the natural hybrid zone on Mount Etna by limiting introgression and promoting divergence across the genome.
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