Hybrid necrosis: autoimmunity as a potential gene-flow barrier in plant species

@article{Bomblies2007HybridNA,
  title={Hybrid necrosis: autoimmunity as a potential gene-flow barrier in plant species},
  author={Kirsten Bomblies and Detlef Weigel},
  journal={Nature Reviews Genetics},
  year={2007},
  volume={8},
  pages={382-393}
}
Ecological factors, hybrid sterility and differences in ploidy levels are well known for contributing to gene-flow barriers in plants. Another common postzygotic incompatibility, hybrid necrosis, has received comparatively little attention in the evolutionary genetics literature. Hybrid necrosis is associated with a suite of phenotypic characteristics that are similar to those elicited in response to various environmental stresses, including pathogen attack. The genetic architecture is… Expand
Evolution and Molecular Control of Hybrid Incompatibility in Plants
TLDR
New findings about hybrid incompatibilities in plants are summarized, most of which are from studies on Arabidopsis and rice and the role of domestication on the evolution of hybrid incompatibility is discussed. Expand
Genome mapping of postzygotic hybrid necrosis in an interspecific pear population
TLDR
Three chromosome regions associated with two types of hybrid necrosis were identified in the interspecific pear population resulting from a cross between PEAR3 and ‘Moonglow’, which were genetically independent. Expand
Hybrid Incompatibility of the Plant Immune System: An Opposite Force to Heterosis Equilibrating Hybrid Performances
TLDR
It is proposed that the immune system incompatibility in plants might play an opposite force to restrict the expression of heterosis in hybrids, which is a prerequisite to ensure increased fitness in the resulting hybrids. Expand
Diverse paths to hybrid incompatibility in Arabidopsis.
  • N. Vaid, R. Laitinen
  • Biology, Medicine
  • The Plant journal : for cell and molecular biology
  • 2019
TLDR
This review highlights the current knowledge of diverse mechanisms that are known to contribute to hybrid incompatibility, and highlights the high-throughput genetic and molecular tools available for the Arabidopsis genus. Expand
Hybrid incompatibility genes: remnants of a genomic battlefield?
  • N. Johnson
  • Medicine, Biology
  • Trends in genetics : TIG
  • 2010
TLDR
Accumulating evidence suggests genomic conflict frequently drives the divergence causing incompatibilities in hybrids, and ways to test this hypothesis conclusively are suggested. Expand
Doomed lovers: mechanisms of isolation and incompatibility in plants.
  • K. Bomblies
  • Biology, Medicine
  • Annual review of plant biology
  • 2010
TLDR
Five areas in which the authors understand the molecular basis of adaptation and isolation sufficiently to begin examining patterns are discussed, highlighting the importance of understanding both biotic and abiotic factors and the potential overlap between them. Expand
Association of Wheat miRNAs with Hybrid Incompatibility in Interspecific Crosses of Triticum and Aegilops
TLDR
The Dobzhansky-Muller (DM) model simply explains the process for generating genetic incompatibility in hybrids between two diverging lineages and proposes that reduction of fitness in hybrids generally occurs due to interaction between at least two epistatic loci derived from divergent parents. Expand
Epigenetic polymorphisms could contribute to the genomic conflicts and gene flow barriers resulting to plant hybrid necrosis
TLDR
Explorations into  the mechanisms which unlock hybrid necrosis can help plant breeders to avoid genetic and epigenetic  incompatibilities during crop improvement programs. Expand
Speciation Due to Hybrid Necrosis in Plant-Pathogen Models
We develop a model for speciation due to postzygotic incompatibility generated by autoimmune reactions. The model is based on frequency-dependent interactions between host plants and their pathogens,Expand
Too much of a good thing? Hybrid necrosis as a by-product of plant immune system diversification
TLDR
Both the prevalence of hybrid necrosis in diverse plant taxa, and the growing indication that it may arise as a by-product of adaptation to the biotic environment, emphasise the need to understand the mechanisms behind this condition. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 156 REFERENCES
Reproductive isolation as a pleiotropic effect of copper tolerance in Mimulus guttatus?
TLDR
Results suggest that reproductive isolation between two populations of Mimulus guttatus could evolve as a direct result of adaptive differentiation in sympatry. Expand
Tansley review No. 102 plant hybridization
TLDR
A full accounting of the role of hybridization in adaptive evolution and speciation will probably require the integration of experimental and historical approaches. Expand
The genetic basis of hybrid necrosis in wheat
TLDR
An interaction between genetic background and gene dosage effect was demonstrated by the finding that after a few generations of selfing, starting from one F1-plant, populations may result with different more or less constant gene dosage effects. Expand
Genetics of Hybrid Necrosis in Rye
TLDR
It is suggested, that the two genes in rye are named Ner1 and Ner2 corresponding to the wheat gene with which they complement in triticale, which is known to cause hybrid necrosis in wheat. Expand
A genetic system involving superoxide causes F1 necrosis in wheat (T. aestivum L.).
TLDR
A genetic system in wheat produced by crossing a drought tolerant cultivar C306 and high yielding cultivar WL711 exhibits leaf necrosis leading to the death of the plant, and superoxide anion appears to play a vital role in necrosis of leaves in F1 hybrid. Expand
Hybrid zones and the genetic architecture of a barrier to gene flow between two sunflower species.
TLDR
The utility of hybrid zones for identifying factors contributing to isolation and the prediction of increased resolution relative to controlled crosses are demonstrated and verified. Expand
Phylogeographic studies in plants: problems and prospects
TLDR
Although current phylogeographic studies of plants show promise, widespread application of this approach has been hindered by a lack of appropriate molecular variation; this problem is discussed and possible solutions considered. Expand
Extensive Chromosomal Repatterning and the Evolution of Sterility Barriers in Hybrid Sunflower Species
TLDR
QTL analyses indicate that the karyotypic differences contribute to reproductive isolation in homoploid hybrid speciation, and pollen and seed fertility estimates for F1's between the hybrid and parental species fall below 11%, which is sufficient for evolutionary independence of the hybrid neospecies. Expand
Phylogenetic Differentiation of Cultivated Rice. XV:Complementary Lethal Genes in Rice
TLDR
Having observed a number of crosses between rice varieties, two types or hybrid inviability were found, which are reported in this paper, and the former may bring about a tendency to hybrid-breakdown, and may have played a role in the phylogenetic differentiation of rice varieties. Expand
REPRODUCTIVE BARRIERS DISTRIBUTED IN MELILOTUS SPECIES AND THEIR GENETIC BASES
TLDR
The F1 chlorosis between the above two species appeared to be controlled by a set of complementary dominant lethals, or by alleles at one locus which express a disharmonious interaction in heterozygote. Expand
...
1
2
3
4
5
...