ArticleG3 (Bethesda, Md.)2021
Chromosome inheritance and meiotic stability in allopolyploid Brassica napus.
Article in G3 (Bethesda, Md.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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Who cites it
29 citing papers in PubMed.
- Article
- Chromosomal collinearity drives meiotic instability in Brassica autoallopolyploid.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Stable resynthesized Brassica napus lines show similar meiotic behaviour to established B. napus.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2026Article
- Small RNAs regulation and genomic harmony: insights into allopolyploid evolution in marsh orchids (Dactylorhiza).The New phytologist · 2026Article
- Human selection maintains karyotype integrity of highly unstable genomic cultivated autotetraploid potato (Science advances · 2025Article
- The synaptonemal complex stabilizes meiosis in allotetraploid Brassica napus and autotetraploid Arabidopsis thaliana.The New phytologist · 2025Article
- The genome and GeneBank genomics of allotetraploid Nicotiana tabacum provide insights into genome evolution and complex trait regulation.Nature genetics · 2025Article
- Transgressive expression and dosage effect of A09 chromosome genes and their homoeologous genes influence the flowering time of resynthesized allopolyploid Brassica napus.BMC plant biology · 2025Article
- Unambiguous chromosome identification reveals the factors impacting irregular chromosome behaviors in allotriploid AAC Brassica.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Complex Polyploids: Origins, Genomic Composition, and Role of Introgressed Alleles.Systematic biology · 2024Article
- Article
- Downregulation of the expression of subgenomic chromosome A7 genes promotes plant height in resynthesized allopolyploid Brassica napus.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- Karyotyping of aneuploid and polyploid plants from low coverage whole-genome resequencing.BMC plant biology · 2023Article
- Article
- Allopolyploidy: An Underestimated Driver inLife (Basel, Switzerland) · 2023Article
- Homoeologous evolution of the allotetraploid genome of Poa annua L.BMC genomics · 2023Article
- Phylogenetic Analysis of Allotetraploid Species Using Polarized Genomic Sequences.Systematic biology · 2023Article
- Whole-genome sequence of synthetically derived Brassica napus inbred cultivar Da-Ae.G3 (Bethesda, Md.) · 2023Article
- Genome balance and dosage effect drive allopolyploid formation inProceedings of the National Academy of Sciences of the United States of America · 2023Article
- Ancestral self-compatibility facilitates the establishment of allopolyploids in Brassicaceae.Plant reproduction · 2023Review
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Authors and funding
7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Homoeologous recombination, aneuploidy, and other genetic changes are common in resynthesized allopolyploid Brassica napus. In contrast, the chromosomes of cultivars have long been considered to be meiotically stable. To gain a better understanding of the underlying mechanisms leading to stabilization in the allopolyploid, the behavior of chromosomes during meiosis can be compared by unambiguous chromosome identification between resynthesized and natural B. napus. Compared with natural B. napus, resynthesized lines show high rates of nonhomologous centromere association, homoeologous recombination leading to translocation, homoeologous chromosome replacement, and association and breakage of 45S rDNA loci. In both natural and resynthesized B. napus, we observed low rates of univalents, A-C bivalents, and early sister chromatid separations. Reciprocal homoeologous chromosome exchanges and double reductions were photographed for the first time in meiotic telophase I. Meiotic errors were non-uniformly distributed across the genome in resynthesized B. napus, and in particular homoeologs sharing synteny along their entire length exhibited multivalents at diakinesis and polysomic inheritance at telophase I. Natural B. napus appeared to resolve meiotic errors mainly by suppressing homoeologous pairing, resolving nonhomologous centromere associations and 45S rDNA associations before diakinesis, and reducing homoeologous cross-overs.
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