Abstract
Retrotransposons constitute a ubiquitous and dynamic component of plant genomes. Intragenomic and intergenomic comparisons of related genomes offer potential insights into retrotransposon behavior and genomic effects. Here, we have used fluorescent in-situ hybridization to determine the chromosomal distributions of a Ty1-copia-like retrotransposon in the cotton AD-genome tetraploid Gossypium hirsutum and closely related putative A- and D-genome diploid ancestors. Retrotransposon clone A108 hybridized to all G. hirsutum chromosomes, approximately equal in intensity in the A- and D-subgenomes. Similar results were obtained by hybridization of A108 to the A-genome diploid G. arboreum, whereas no signal was detected on chromosomes of the D-genome diploid G. raimondii. The significance and potential causes of these observations are discussed.
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Hanson, R.E., Islam-Faridi, M.N., Crane, C.F. et al. Ty1-copia-retrotransposon Behavior in a Polyploid Cotton. Chromosome Res 8, 73–76 (2000). https://doi.org/10.1023/A:1009239522541
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DOI: https://doi.org/10.1023/A:1009239522541