English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Background  The complexity of the wheat genome has resulted from waves of retrotransposable element insertions. Gene deletions and disruptions generated by the fast replacement of repetitive elements in wheat have resulted in disruption of colinearity at a micro (sub-megabase) level among the cereals. In view of genomic changes that are possible within a given time span, conservation of genes between species tends to imply an important functional or regional constraint that does not permit a change in genomic structure. The  ctg1034  contig completed in this paper was initially studied because it was assigned to the  Sr2  resistance locus region, but detailed mapping studies subsequently assigned it to the long arm of 3B and revealed its unusual features.    Results  BAC shotgun sequencing of the hexaploid wheat ( Triticum aestivum  cv. Chinese Spring) genome has been used to assemble a group of 15 wheat BACs from the chromosome 3B physical map FPC contig  ctg1034  into a 783,553 bp genomic sequence. This  ctg1034  sequence was annotated for biological features such as genes and transposable elements. A three-gene island was identified among >80% repetitive DNA sequence. Using bioinformatics analysis there were no observable similarity in their gene functions. The  ctg1034  gene island also displayed complete conservation of gene order and orientation with syntenic gene islands found in publicly available genome sequences of  Brachypodium distachyon ,  Oryza sativa ,  Sorghum bicolor  and  Zea mays , even though the intergenic space and introns were divergent.    Conclusion  We propose that  ctg1034  is located within the heterochromatic C-band region of deletion bin 3BL7 based on the identification of heterochromatic tandem repeats and presence of significant matches to chromodomain-containing  gypsy  LTR retrotransposable elements. We also speculate that this location, among other highly repetitive sequences, may account for the relative stability in gene order and orientation within the gene island.  Sequence data from this article have been deposited with the GenBank Data Libraries under accession no. GQ422824

bmc plant biology

A highly conserved gene island of three genes on chromosome 3B of hexaploid wheat: diverse gene function and genomic structure maintained in a tightly linked block