ArticleChromosoma2012
Inversions of chromosome arms 4AL and 2BS in wheat invert the patterns of chiasma distribution.
Article in Chromosoma, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Article
- Diversity and determinants of recombination landscapes in flowering plants.PLoS genetics · 2022Article
- Recombination landscape divergence between populations is marked by larger low-recombining regions in domesticated rye.Molecular biology and evolution · 2022Article
- Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders.BMC ecology and evolution · 2021Article
- Genome-Scale Analysis of Homologous Genes among Subgenomes of Bread Wheat (International journal of molecular sciences · 2020Article
- Manipulation of crossover frequency and distribution for plant breeding.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2019Review
- Genome-Wide Identification and Transcriptional Regulation of Aquaporin Genes in Bread Wheat (Genes · 2018Article
- High-Resolution Mapping of Crossover Events in the Hexaploid Wheat Genome Suggests a Universal Recombination Mechanism.Genetics · 2017Article
- Meiotic Crossing Over in Maize Knob Heterochromatin.Genetics · 2017Article
- Molecular, genetic and evolutionary analysis of a paracentric inversion in Arabidopsis thaliana.The Plant journal : for cell and molecular biology · 2016Article
- Forcing the shift of the crossover site to proximal regions in wheat chromosomes.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2015Article
- Identifying crossover-rich regions and their effect on meiotic homologous interactions by partitioning chromosome arms of wheat and rye.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2013Article
- Dynamics of rye chromosome 1R regions with high or low crossover frequency in homology search and synapsis development.PloS one · 2012Article
- Finding the correct partner: the meiotic courtship.Scientifica · 2012Review
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In many species, including wheat, crossing over is distal, and the proximal regions of chromosome arms contribute little to genetic maps. This was thought to be a consequence of terminal initiation of synapsis favoring distal crossing over. However, in an inverted rye chromosome arm, the pattern of metaphase I chiasmata was also inverted, suggesting that crossover frequencies were specific to chromosome segments. Here, wheat chromosome arms 2BS and 4AL, with essentially entire arms inverted in reverse tandem duplications (rtd), were studied in the MI of meiosis. Inversion-duplication placed the recombining segments in the middle of the arms. While the overall pairing frequencies of the inverted-duplicated arms were considerably reduced relative to normal arms, chiasmata, if present, were always located in the same regions as in structurally normal arms, and relative chiasma frequencies remained the same. The frequencies of fragment or fragment + bridge configurations in AI and AII indicated that of the two tandemly arranged copies of segments in rtds, the more distal inverted segments were more likely to cross over than the segments in their original orientations. These observations show that also in wheat, relative crossover frequencies along chromosome arms are predetermined and independent of the segment location. The segments normally not licensed to cross over do not do so even when placed in seemingly most favorable positions for it.
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