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Fig. 3 | Mobile DNA

Fig. 3

From: The repetitive landscape of the 5100 Mbp barley genome

Fig. 3

Distribution of Gypsy and Copia retrotransposons along barley chromosomes. Phylogenetic trees of the most abundant Gypsy and Copia families are shown at the left. For the construction of phylogenetic trees, the reverse transcriptase and integrase region of the predicted polyprotein was used. GAG (a structural protein forming the virus-like particle) and protease domains were excluded because they don’t show enough sequence conservation between families. The numbers at the forks indicate the number of times the group consisting of the families to the right of that fork occurred among the trees, out of 100 trees. Sequence organization and gene content of the individual retrotransposon families are shown in the center. Chromosomal distributions are shown at the right in bins of 20 to 40 Mb (depending on the copy number) as heat maps and bar plots to indicate absolute numbers. The y-axis indicates the total number of kb that is occupied by the respective TE family in each bin (Note that scales differ between families). Retrotransposon families with different evolutionary histories show different chromosomal distribution patterns. a Distribution of Gypsy elements on chromosome 2. b Distribution of Copia elements on chromosome 1

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