Impact of transposable elements on the organization and function of allopolyploid genomes
- PMID: 20002321
- DOI: 10.1111/j.1469-8137.2009.03096.x
Impact of transposable elements on the organization and function of allopolyploid genomes
Abstract
Transposable elements (TEs) represent an important fraction of plant genomes and are likely to play a pivotal role in fuelling genome reorganization and functional changes following allopolyploidization. Various processes associated with allopolyploidy (i.e. genetic redundancy, bottlenecks during the formation of allopolyploids or genome shock following genome merging) may allow accumulation of TE insertions. Our objective in carrying out a survey of the literature and a comparative analysis across different allopolyploid systems is to shed light on the structural, epigenetic and functional modifications driven by TEs during allopolyploidization and subsequent diploidization. The available evidence indicates that TE proliferation in the short or the long term after allopolyploidization may be restricted to a few TEs, in specific polyploid systems. By contrast, data indicate major structural changes in the TE genome fraction immediately after allopolyploidization, mainly through losses of TE sequences as a result of recombination. Emerging evidence also suggests that TEs are targeted by substantial epigenetic changes, which may impact gene expression and genome stability. Furthermore, TEs may directly or indirectly support the evolution of new functionalities in allopolyploids during diploidization. All data stress allopolyploidization as a shock associated with drastic genome reorganization. Mechanisms controlling TEs during allopolyploidization as well as their impact on diploidization are discussed.
Similar articles
-
Differential dynamics of transposable elements during long-term diploidization of Nicotiana section Repandae (Solanaceae) allopolyploid genomes.PLoS One. 2012;7(11):e50352. doi: 10.1371/journal.pone.0050352. Epub 2012 Nov 21. PLoS One. 2012. PMID: 23185607 Free PMC article.
-
Impact of transposable elements on polyploid plant genomes.Ann Bot. 2017 Aug 1;120(2):195-207. doi: 10.1093/aob/mcx078. Ann Bot. 2017. PMID: 28854566 Free PMC article. Review.
-
Genomic asymmetric epigenetic modification of transposable elements is involved in gene expression regulation of allopolyploid Brassica napus.Plant J. 2024 Jan;117(1):226-241. doi: 10.1111/tpj.16491. Epub 2023 Oct 5. Plant J. 2024. PMID: 37797206
-
Rapid structural and epigenetic reorganization near transposable elements in hybrid and allopolyploid genomes in Spartina.New Phytol. 2009 Dec;184(4):1003-15. doi: 10.1111/j.1469-8137.2009.03029.x. Epub 2009 Sep 23. New Phytol. 2009. PMID: 19780987
-
The Dynamism of Transposon Methylation for Plant Development and Stress Adaptation.Int J Mol Sci. 2021 Oct 21;22(21):11387. doi: 10.3390/ijms222111387. Int J Mol Sci. 2021. PMID: 34768817 Free PMC article. Review.
Cited by
-
Silenced rRNA genes are activated and substitute for partially eliminated active homeologs in the recently formed allotetraploid, Tragopogon mirus (Asteraceae).Heredity (Edinb). 2015 Mar;114(3):356-65. doi: 10.1038/hdy.2014.111. Epub 2014 Dec 24. Heredity (Edinb). 2015. PMID: 25537492 Free PMC article.
-
Expression pattern of resynthesized allotetraploid Capsella is determined by hybridization, not whole-genome duplication.New Phytol. 2023 Jan;237(1):339-353. doi: 10.1111/nph.18542. Epub 2022 Nov 7. New Phytol. 2023. PMID: 36254103 Free PMC article.
-
Structure and extent of DNA methylation-based epigenetic variation in wild emmer wheat (T. turgidum ssp. dicoccoides) populations.BMC Plant Biol. 2015 Aug 14;15:200. doi: 10.1186/s12870-015-0544-z. BMC Plant Biol. 2015. PMID: 26272589 Free PMC article.
-
Involvement of disperse repetitive sequences in wheat/rye genome adjustment.Int J Mol Sci. 2012;13(7):8549-8561. doi: 10.3390/ijms13078549. Epub 2012 Jul 10. Int J Mol Sci. 2012. PMID: 22942719 Free PMC article.
-
Chromosomes of Asian cyprinid fishes: cytogenetic analysis of two representatives of small paleotetraploid tribe Probarbini.Mol Cytogenet. 2018 Sep 4;11:51. doi: 10.1186/s13039-018-0399-8. eCollection 2018. Mol Cytogenet. 2018. PMID: 30202442 Free PMC article.
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Other Literature Sources