Parallel Loss of Plastid Introns and Their Maturase in the Genus Cuscuta
Figure 1
Phylogenies of Convolvulaceae (a) and Orobanchaceae (b) inferred from full and partial nucleotide sequences of matK.
Branches shown in red denote significant increases in selection within domain X of matK. Trees were produced using Maximum Likelihood with bootstrap values (100 replications) shown at the nodes (bootstrap values of 100 are denoted by asterisks). Taxonomic delimitations of Cuscuta subgenera and Convolvulaceae are boxed and labeled. Group IIA intron losses are mapped on branches where they are inferred to have occurred. The branch joining Ipomoea with Cuscuta species, denoted with a dotted line, was collapsed for analysis due to low support in other studies.