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Figure 1 | BMC Genomics

Figure 1

From: Evolutionary history of Oryza sativa LTR retrotransposons: a preliminary survey of the rice genome sequences

Figure 1

Phylogenetic trees of subfamily structure based on LTR nucleotide sequence data. The 32 elements of Osr 26 family fall into at least 5 clades, with Osr 25 as the outgroup. To better exhibit tree structure, all Osr 27 elements were removed. Insertions/deletions were ignored while performing phylogenetic analyses. Values on individual branches are bootstrap percentages using 1000 bootstrap repetitions. Each LTR in the tree is named by the genomic clone in which it was found. For elements with two LTRs, the 3' LTR is labeled by a lower case "b" while the 5' LTR is labeled by a lower case "a". Each tree is exhibited with a scale bar determined by the number of nucleotide substitutions per site between two sequences. The tight clustering seen in both families represents a high degree of nucleotide identity between elements within a subfamily.

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