The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
Genomic changes in synthetic Arabidopsis polyploids
Abstract
Summary: Polyploids are common and arise frequently by genome duplication (autopolyploids) or interspecific hybridization (allopolyploids). Neoallopolyploids display sterility, lethality, phenotypic instability, gene silencing and epigenetic changes. Little is known about the molecular basis of these phenomena, and how much genomic remodeling happens upon allopolyploidization. Extensive genomic remodeling has been documented in wheat, but little remodeling occurs in cotton. Newly synthesized Arabidopsis allopolyploids, which display phenotypic instability and low fertility, displayed several, possibly related mechanisms that can remodel genomes. We detected transcriptional activity of several transposons although their transposition was limited. One represents a new family of conditionally active En‐Spm‐like transposons of Arabidopsis thaliana, which underwent remodeling of CG methylation upon allopolyploidization. A random amplified fragment length polymorphism survey suggested remodeling at few, specific loci. Meiotic analyses revealed the appearance of chromosomal fragments in a substantial fraction of anther meiocytes. In several individuals produced by hybrids between the synthetic and a natural allopolyploid pollen viability inversely correlated with meiotic instability. Activity of selected DNA transposons and the possibly related chromosomal breaks could cause changes by inducing translocations and rearrangements.
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Cites
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Self-citationUnderstanding mechanisms of novel gene expression in polyploids
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Transcriptional activation of retrotransposons alters the expression of adjacent genes in wheat
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Cited by
Genome Plasticity a Key Factor in the Success of Polyploid Wheat Under Domestication
Dubcovsky, J., & Dvorak, J. (2007) · Science · doi:10.1126/science.1143986 · Cited by 1,082
Gene duplication and evolutionary novelty in plants
Flagel, L. E., & Wendel, J. F. (2009) · New Phytologist · doi:10.1111/j.1469-8137.2009.02923.x · Cited by 969
Polyploidy and genome evolution in plants
Soltis, P. S., Marchant, D. B., Van de Peer, Y., & Soltis, D. E. (2015) · Current Opinion in Genetics & Development · doi:10.1016/j.gde.2015.11.003 · Cited by 773
Transposable Elements, Epigenetics, and Genome Evolution
Fedoroff, N. V. (2012) · Science · doi:10.1126/science.338.6108.758 · Cited by 634
Homoeolog expression bias and expression level dominance in allopolyploid cotton
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Metadata
- Authors
- Madlung, A., Tyagi, A. P., Watson, B., Jiang, H., Kagochi, T., Doerge, R. W., Martienssen, R., & Comai, L.
- Venue
- The Plant Journal
- Publisher
- Wiley
- Published
- 2004-12-14
- Volume
- 41
- Issue
- 2
- Pages
- 221-230
- ISSN
- 0960-7412 (ISSN-L)
- 1365-313X
- OpenAlex
- W1914616932
- Cited by
- 349
- References
- 29
- FWCI
- 17.62
- Type
- journal article
- Language
- en
- Open access
- closed
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