ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2012
Localization of high level of sequence conservation and divergence regions in cotton.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- New evidence confirming the CD genomic constitutions of the tetraploid Avena species in the section Pachycarpa Baum.PloS one · 2021Article
- Identification of high-copy number long terminal repeat retrotransposons and their expansion in Phalaenopsis orchids.BMC genomics · 2020Article
- Cytogenetic Diversity of Simple Sequences Repeats in Morphotypes of Brassica rapa ssp. chinensis.Frontiers in plant science · 2016Article
- Sequence-based ultra-dense genetic and physical maps reveal structural variations of allopolyploid cotton genomes.Genome biology · 2015Article
- Sequencing of allotetraploid cotton (Gossypium hirsutum L. acc. TM-1) provides a resource for fiber improvement.Nature biotechnology · 2015Article
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Authors and funding
8 authors.
Funding
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Abstract
In a previous study, we observed that the variations in chromosome size are due to uneven expansion and contraction by comparing the structures and sizes of a pair of homoeologous high-resolution cytogenetic maps of chromosomes 12A and 12D in tetraploid cotton. To reveal the variation at the sequence level, in the present paper, we sequenced two pairs of homoeologous bacterial artificial chromosomes derived from high- to low-variable genomic regions. Comparisons of their sequence variations confirmed that the highly conserved and divergent sequences existed in the distal and pericentric regions, e.g., high- and low-variable genome size regions in these two pairs of cotton homoeologous chromosomes. Sequence analysis also confirmed that the differential accumulation of Gossypium retrotransposable gypsy-like element (Gorge3) accounted for the main contributions for the size difference between the pericentric regions. By fluorescence in situ hybridization analysis, we found that Gorge3 has a bias distribution in the A(T)/A proximal regions and is associated with the heterochromatin along the chromosomes in the entire Gossypium genome. These results indicate that, between A(T)/A and D(T)/D genomes, the distal and pericentric regions usually possess high level of sequence conservation and divergence, respectively, in cotton.
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