Genome evolution in polyploids

@article{Wendel2004GenomeEI,
  title={Genome evolution in polyploids},
  author={Jonathan F. Wendel},
  journal={Plant Molecular Biology},
  year={2004},
  volume={42},
  pages={225-249}
}
  • J. Wendel
  • Published 2004
  • Biology, Medicine
  • Plant Molecular Biology
Polyploidy is a prominent process in plants and has been significant in the evolutionary history of vertebrates and other eukaryotes. In plants, interdisciplinary approaches combining phylogenetic and molecular genetic perspectives have enhanced our awareness of the myriad genetic interactions made possible by polyploidy. Here, processes and mechanisms of gene and genome evolution in polyploids are reviewed. Genes duplicated by polyploidy may retain their original or similar function, undergo… Expand
Genetic and epigenetic mechanisms for gene expression and phenotypic variation in plant polyploids.
  • Z. Chen
  • Biology, Medicine
  • Annual review of plant biology
  • 2007
TLDR
There is compelling evidence that changes in DNA sequence, cis- and trans-acting effects, chromatin modifications, RNA-mediated pathways, and regulatory networks modulate differential expression of homoeologous genes and phenotypic variation that may facilitate adaptive evolution in polyploid plants and domestication in crops. Expand
Mechanisms of genomic rearrangements and gene expression changes in plant polyploids.
  • Z. Chen, Z. Ni
  • Biology, Medicine
  • BioEssays : news and reviews in molecular, cellular and developmental biology
  • 2006
TLDR
The origins and forms of polyploidy are reviewed, transcriptome divergence between the progenitors and in the newly formed allopolyploids are shown and models for transcriptional regulation, chromatin modification and RNA-mediated pathways in establishing locus-specific expression of orthologous and homoeologous genes are proposed. Expand
Evolutionary genetics of genome merger and doubling in plants.
TLDR
The profound effects of polyploidy on gene expression appear to be caused more by hybridity than by genome doubling, suggesting that there is an underlying set of principles governing the fates of duplicated genes. Expand
Rapid genomic changes in polyploid wheat and related species: implications for genome evolution and genetic improvement.
TLDR
An updated discussion on interesting and important issues within the scope of a specific yet one of the most important plant groups-polyploid wheat and its related species is provided. Expand
Advances in the study of polyploidy since Plant speciation
TLDR
Despite the recent advances in the understanding of polyploid evolution, many exciting aspects remain under-investigated, and some of these include the consequences of genetic and genomic changes in naturalpolyploid populations, the physiological and ecological effects of polyPLoidy, and whether recurrent polyploidsy prompts evolution to repeat itself. Expand
Molecular regulatory mechanisms underlying the adaptability of polyploid plants
TLDR
The roles of individual molecular regulatory mechanisms and their potential synergistic pathways underlying plant evolution and adaptation are reviewed and increasing interest in m6A methylation has provided a new component in potential mechanistic coordination. Expand
Polyploidy and genome evolution in plants.
TLDR
Evidence is now supported by evidence showing that genes that are retained in duplicate typically diversify in function or undergo subfunctionalization, with some duplicate genes more prone to retention than others. Expand
Polyploidization and epigenetics
TLDR
This work examines and assess certain epigenetic phenomena and possible pathways that may facilitate the evolutionary success of polyploid organisms and provides effective and flexible ways for a new polyploids to respond quickly to the enormous change in genetic material to survive and potentially reproduce. Expand
Genomic Clues to the Evolutionary Success of Polyploid Plants
TLDR
Current knowledge of genetic, epigenetic, and transcriptional changes associated with polyploidy in plants are reviewed and how these changes might contribute to the evolutionary success of polyploids plants are assessed. Expand
Epigenetic phenomena and the evolution of plant allopolyploids.
TLDR
Epigenetic modifications could produce adaptive epimutations and novel phenotypes, some of which may be evolutionarily stable for millions of years, thereby representing a vast reservoir of latent variation that may be episodically released and made visible to selection. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 272 REFERENCES
Loss of duplicate gene expression after polyploidisation
TLDR
This work presents evidence of extensive gene silencing in the 50-Myr history of a family of tetraploid fishes and suggests that those species regarded by systematists as advanced may have lost the expression of more duplicate genes than primitive species. Expand
Rapid genome change in synthetic polyploids of Brassica and its implications for polyploid evolution.
TLDR
It is demonstrated that polyploid species can generate extensive genetic diversity in a short period of time and genetic divergence among the derivatives of synthetic polyploids was evident from variation in genome composition and phenotypes. Expand
Polyploidy and Novelty in Flowering Plants
  • D. Levin
  • Biology
  • The American Naturalist
  • 1983
TLDR
Evidence is presented herein from biochemical, physiological, developmental, and genetical sources which indicates that the nucleotypic effects of chromosome doubling are not necessarily negative, and indeed chromosome doubling may "propel" a population in to a new adaptive sphere, and render it capable of occupying habitats beyond the limits of its diploid progenitor. Expand
The dynamic nature of polyploid genomes.
  • D. Soltis, P. Soltis
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1995
TLDR
The application of molecular techniques has dramatically increased the understanding of polyploid evolution and has fundamentally reshaped traditional views, and the paper by Song et al. (20) in this journal further elucidates the process and represents a key breakthrough in the authors' understanding of the evolution ofpolyploid genomes. Expand
Gene silencing in plants: relevance for genome evolution and the acquisition of genomic methylation patterns.
TLDR
Because certain types of transposable elements are embedded in regulatory regions of plant genes and have become greatly amplified in plant genomes, they could contribute substantially to normal gene expression and to the generation of genomic methylation patterns. Expand
Genetic and evolutionary aspects of allopolyploidy in wheat
TLDR
The presented evidence indicates that diploidization is a non-random process achieved through mutations or intergenomic suppression and gene dosage compensation is aNon-specific process determined by several post-transcriptional rate-limiting factors. Expand
Polyploidy: recurrent formation and genome evolution.
  • Soltis
  • Biology, Medicine
  • Trends in ecology & evolution
  • 1999
TLDR
This work has shown that most polyploid species examined, both plant and animal, have formed recurrently from different populations of their progenitors, potentially producing new gene complexes and facilitating rapid evolution. Expand
Dispersed repetitive DNA has spread to new genomes since polyploid formation in cotton.
TLDR
The discovery of A-genome repeats in G. gossypioides adds genome-wide support to a suggestion previously based on evidence from only a single genetic locus that this species may be either the closest living descendant of the New World cotton ancestor, or an adulterated relic of polyploid formation. Expand
Polyploidy in angiosperms
TLDR
Genomic in situ hybridization allows unequivocal identification of allopolyploids and visualization of their ancestral genomes and indicates multiple origins for polyploid plant species. Expand
GENETIC AND BIOCHEMICAL CONSEQUENCES OF POLYPLOIDY IN TRAGOPOGON
  • M. Roose, L. Gottlieb
  • Biology, Medicine
  • Evolution; international journal of organic evolution
  • 1976
TLDR
Several recent hypotheses have proposed that the wide capabilities of allopolyploids are a direct biochemical consequence of their possession of two divergent diploid genomes which provides them with a multiplicity of enzymes relative to both diploids parents as well as a high proportion of novel enzymes. Expand
...
1
2
3
4
5
...