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  1. ..., with hotspots controlled by chromatin and DNA sequence. To map meiotic DSBs throughout a plant , we purified and sequenced Arabidopsis thaliana SPO11-1-oligonucleotides. SPO11-1-oligos are elevated in gene promoters, terminators, and introns, which is driven by AT-sequence richness that excludes nucleosomes...
  2. ...flanking the centromeres with higher than average DNA methylation, and chromosome arms as the remainder of the (Supplemental Table S9). Consistent with our FTL analysis, we observed that GBS-mapped crossovers were significantly increased in the cmt3 pericentromeric regions (24.6% versus 27.8% of events...
  3. ...chromosomes, 27 chromosomes consist of one contig, 22 chromosomes have telomeres at both ends (Supplemental Table 10), and all chromosomes have a predicted centromeric region (Supplemental Table 11). The chromosome IDs of FaBen and the two haplotypes were assigned by mapping to the FaRR1 (Supplemental Fig. 10...
  4. ...centromere regions: genetic map positions and repetitive DNA structure. Genome Res 7: 1045–1053. ↵Sanei M, Pickering R, Kumke K, Nasuda S, Houben A. 2011. Loss of centromeric histone H3 (CENH3) from centromeres precedes uniparental chromosome elimination in interspecific barley hybrids. Proc Natl Acad Sci...
  5. ...of copy number increases, although transposition of elements of the ATGP3, ATCOPIA13, ATCOPIA21, and ATCOPIA51 subfamilies has also been detected under nonstressed conditions (Tsukahara et al. 2009; Quadrana et al. 2019). Differential analysis of uniquely mapped VLP DNA short sequencing reads...
  6. ...to the TATA motif. ( C ) Percentage overlap of PRs to cis -element motifs mapped to the A. thaliana for 9599 upstream regions for Bor-4 (red arrow) (for overlap in other accessions, see Supplemental Fig. S8). The overlap expected by chance was established by permuting PRs and upstream regions 1000 times (gray...
  7. ...embedded within ∼40 Mb of minimally recombining repetitive DNA. The chromosome structures are similar to those in grains such as wheat, with recombination focused in gene-rich, repeat-depleted regions near chromosome ends. The physical and genetic map should facilitate further dissection of genetic...
  8. ...and that the complexity and extent of alternative splicing in plants has been significantly underestimated. Results Mapping of the Arabidopsis transcriptome To achieve a nonbiased and complete analysis of the Arabidopsis transcriptome, we utilized two approaches: cDNA libraries were prepared using either oligo...
  9. ...Supplemental Methods). These regions, which corresponded to rDNA, centromeric, and other highly repetitive sequences whose copy number is not reflected by the reference assembly, were excluded from subsequent analyses. Disregarding these regions as mapping targets is expected to significantly reduce...
  10. ..., transposons, microsatellites, middle repetitive DNA, and tandemly organized satellites. The satellite repeats are not found elsewhere in the , but are restricted to the genetically defined centromere regions ( Copenhaver et al. 1999 ; The Arabidopsis Genome Initiative 2000 ). Heslop-Harrison et al. (1999...
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