ArticleInternational journal of molecular sciences2019
Instability of Alien Chromosome Introgressions in Wheat Associated with Improper Positioning in the Nucleus.
Article in International journal of molecular sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 25 citations in OpenAlex.
- Comparative Analysis of Triticeae Satellite Repeats Using Low-Coverage Sequencing, qPCR, and FISH.International journal of molecular sciences · 2026Article
- Maize chromatin introgression's effect in oat × maize addition lines.Journal of applied genetics · 2026Article
- Genotype-dependent salt tolerance mechanisms in wheat-Thinopyrum introgression lines revealed by ion transporter gene expression and seedling phenotyping.Scientific reports · 2026Article
- Article
- The illusion of progress: why most introgressions from wild Triticeae fail to improve wheat agronomically.Frontiers in plant science · 2026Review
- Perspectives on the utilization ofFrontiers in plant science · 2025Review
- Insight into chromatin compaction and spatial organization in rice interphase nuclei.Frontiers in plant science · 2024Article
- Draft Sequencing Crested Wheatgrass Chromosomes Identified Evolutionary Structural Changes and Genes and Facilitated the Development of SSR Markers.International journal of molecular sciences · 2022Article
- Auxin Metabolite Profiling in Isolated and Intact Plant Nuclei.International journal of molecular sciences · 2021Article
- Homology-mediated inter-chromosomal interactions in hexaploid wheat lead to specific subgenome territories following polyploidization and introgression.Genome biology · 2021Article
- 3-D Nucleus Architecture in Oat × Maize Addition Lines.International journal of molecular sciences · 2020Article
- Competition of Parental Genomes in Plant Hybrids.Frontiers in plant science · 2020Review
- Uncovering homeologous relationships between tetraploid Agropyron cristatum and bread wheat genomes using COS markers.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2019Article
- Nuclear Disposition of Alien Chromosome Introgressions into Wheat and Rye Using 3D-FISH.International journal of molecular sciences · 2019Article
- Editorial for Special Issue "Molecular Advances in Wheat and Barley".International journal of molecular sciences · 2019Article
Corrections and comments
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Authors and funding
13 authors at 5 institutions in 3 countries.
Funding
Abstract
Alien introgressions introduce beneficial alleles into existing crops and hence, are widely used in plant breeding. Generally, introgressed alien chromosomes show reduced meiotic pairing relative to the host genome, and may be eliminated over generations. Reduced pairing appears to result from a failure of some telomeres of alien chromosomes to incorporate into the leptotene bouquet at the onset of meiosis, thereby preventing chiasmate pairing. In this study, we analysed somatic nuclei of rye introgressions in wheat using 3D-FISH and found that while introgressed rye chromosomes or chromosome arms occupied discrete positions in the Rabl's orientation similar to chromosomes of the wheat host, their telomeres frequently occupied positions away from the nuclear periphery. The frequencies of such abnormal telomere positioning were similar to the frequencies of out-of-bouquet telomere positioning at leptotene, and of pairing failure at metaphase I. This study indicates that improper positioning of alien chromosomes that leads to reduced pairing is not a strictly meiotic event but rather a consequence of a more systemic problem. Improper positioning in the nuclei probably impacts the ability of introgressed chromosomes to migrate into the telomere bouquet at the onset of meiosis, preventing synapsis and chiasma establishment, and leading to their gradual elimination over generations.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.