Figure 4

Neighbor-joining (NJ) phylogenetic tree based on RT nucleotide sequences of CHD-containing Gypsy LTR retrotransposons including newly described elements from monilophytes and lycophytes plants (highlighted in bold). Statistical support was evaluated by bootstrapping (1000 replications); nodes with bootstrap values over 50% are indicated. The name of the host species and accession number are indicated for LTR retrotransposons taken from GenBank. Four diverse clusters of LTR retrotransposons from mosses, monilophytes and lycophytes are shown by arrows. The group of Tcn1-like LTR retrotransposons from mosses (Bryophyta) is also indicated. Previously known clades, clades described in this study, and unclassified lineages (a-f) are shown on the right.