ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2021
Anchoring alien chromosome segment substitutions bearing gene(s) for resistance to mustard aphid in Brassica juncea-B. fruticulosa introgression lines and their possible disruption through gamma irradiation.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 17 citations in OpenAlex.
- Segregating BCMolecular breeding : new strategies in plant improvement · 2026Article
- Dose-dependent γ-radiation effects on seed vigor and genomic mutation patterns in Shuidong mustard (Brassica juncea var. multiceps).BMC genomics · 2026Article
- Thriving or Withering? Plant Molecular Cytogenetics in the First Quarter of the 21st Century.International journal of molecular sciences · 2025Review
- Rapid Identification of Alien Chromosome Fragments and Tracing of Bioactive Compound Genes in Intergeneric Hybrid Offspring BetweenInternational journal of molecular sciences · 2025Article
- Chromosome constitution and genetic relationships of Morus spp. revealed by genomic in situ hybridization.BMC plant biology · 2023Article
- Diversity of Phytosterols in Leaves of Wild Brassicaceae Species as Compared toPlants (Basel, Switzerland) · 2023Article
- Perspectives for integrated insect pest protection in oilseed rape breeding.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022Review
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Authors and funding
7 authors at 2 institutions in 2 countries.
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Abstract
key messageHeavy doses of gamma irradiation can reduce linkage drag by disrupting large sized alien translocations and promoting exchanges between crop and wild genomes. Resistance to mustard aphid (Lipaphis erysimi) infestation was significantly improved in Brassica juncea through B. juncea-B. fruticulosa introgression. However, linkage drag caused by introgressed chromatin fragments has so far prevented the deployment of this resistance source in commercial cultivars. We investigated the patterns of donor chromatin segment substitutions in the introgression lines (ILs) through genomic in situ hybridization (GISH) coupled with B. juncea chromosome-specific oligonucleotide probes. These allowed identification of large chromosome translocations from B. fruticulosa in the terminal regions of chromosomes A05, B02, B03 and B04 in three founder ILs (AD-64, 101 and 104). Only AD-101 carried an additional translocation at the sub-terminal to intercalary position in both homologues of chromosome A01. We validated these translocations with a reciprocal blast hit analysis using shotgun sequencing of three ILs and species-specific contigs/scaffolds (kb sized) from a de novo assembly of B. fruticulosa. Alien segment substitution on chromosome A05 could not be validated. Current studies also endeavoured to break linkage drag by exposing seeds to a heavy dose (200kR) of gamma radiation. Reduction in the size of introgressed chromatin fragments was observed in many M
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