ArticleThe Plant cell2006
Sequence-level analysis of the diploidization process in the triplicated FLOWERING LOCUS C region of Brassica rapa.
Article in The Plant cell, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 124 papers.
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Who cites it
124 citing papers in PubMed, 243 citations in OpenAlex.
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- Primary multistep phosphorelay activation comprises both cytokinin and abiotic stress responses: insights from comparative analysis of Brassica type-A response regulators.Journal of experimental botany · 2024Article
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- Genomics of predictive radiation mutagenesis in oilseed rape: modifying seed oil composition.Plant biotechnology journal · 2024Article
- BL-Hi-C reveals the 3D genome structure ofHorticulture research · 2024Article
- Polyploidization: A Biological Force That Enhances Stress Resistance.International journal of molecular sciences · 2024Review
- Characterization ofMolecular breeding : new strategies in plant improvement · 2023Article
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- Enrichment of intrinsically disordered residues in ohnologs facilitates abiotic stress resilience in Brassica rapa.Journal of plant research · 2023Article
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- Genome-wide identification and analysis of terpene synthase (Frontiers in plant science · 2022Article
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- Research Advances and Prospects of Orphan Genes in Plants.Frontiers in plant science · 2022Review
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- Genome-Wide Identification and Expression Profiling of 2OGD Superfamily Genes from ThreeGenes · 2021Article
- Genome structural evolution in Brassica crops.Nature plants · 2021Article
64 more citing papers are in PubMed but not listed here.
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Authors and funding
17 authors at 6 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Strong evidence exists for polyploidy having occurred during the evolution of the tribe Brassiceae. We show evidence for the dynamic and ongoing diploidization process by comparative analysis of the sequences of four paralogous Brassica rapa BAC clones and the homologous 124-kb segment of Arabidopsis thaliana chromosome 5. We estimated the times since divergence of the paralogous and homologous lineages. The three paralogous subgenomes of B. rapa triplicated 13 to 17 million years ago (MYA), very soon after the Arabidopsis and Brassica divergence occurred at 17 to 18 MYA. In addition, a pair of BACs represents a more recent segmental duplication, which occurred approximately 0.8 MYA, and provides an exception to the general expectation of three paralogous segments within the B. rapa genome. The Brassica genome segments show extensive interspersed gene loss relative to the inferred structure of the ancestral genome, whereas the Arabidopsis genome segment appears little changed. Representatives of all 32 genes in the Arabidopsis genome segment are represented in Brassica, but the hexaploid complement of 96 has been reduced to 54 in the three subgenomes, with compression of the genomic region lengths they occupy to between 52 and 110 kb. The gene content of the recently duplicated B. rapa genome segments is identical, but intergenic sequences differ.
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