Phylogenetic relationship of Surge elements to other plant Ty3/Gypsy -like retrotransposons based on 118 parsimony-informative residues of the rt domain. The Tnt1 Copia-like element from Nicotiana was used as a phylogenetic outgroup. The alignment of ingroup and outgroup sequences was conducted manually with the aid of retroelement alignments reported in ; phylogenetic analysis was conducted using the heuristic search option of maximum parsimony. One of the three most parsimonious trees is reported. Bootstrap values (>50%) are indicated above branches and are based on 5,000 replicates. Class A and class B designations follow those reported in . GenBank accession numbers and/or citations for sequences are: Legolas (AC007730), Tma1-1 (AAD22339), Gorge3 (EU098898), IRRE1 (consensus sequence reported in ), IRRE2 (consensus sequence reported in ), RIRE3 (AB014738), Kangourou (DQ365821), Del1 (X13886), Dea1 (Y12432), Gorge2 (DX404795), RetroSor1 (AAD19359), Cinful (AAD11615), Wallabi (DQ365824), RIRE1 (BAA22288), Athila (AB005248), Copia Tnt1 (P10978).