6533b838fe1ef96bd12a4f9a

RESEARCH PRODUCT

Phylogeny of snapdragon species (Antirrhinum; Scrophulariaceae) using non-coding cpDNA sequences

subject

description

Antirrhinum is an Old World genus of up to 25 perennial taxa, mainly located in the western Mediterranean basin. A molecular analysis of 24 taxa of Antirrhinum was undertaken using cpDNA sequences from the trnT (UGU)-trnL (UAA) 5' exon region. The Kimura two-parameter model was chosen to calculate pairwise nucleotide divergence values between cpDNA sequences, and a bootstrapped neighbor-joining dendrogram was constructed from the nucleotide divergence distance matrix. Eighteen sites were variable across the studied samples and the position of 7 indels, ranging from 1 to 7 bp, was inferred from the sequence alignment. Several trnT-trnL sequences are identical in: some members of subsection Kickxiella (A. subbaeticum, A. valentinum, A. mollisimum, A. charidemi, and A. hispanicum); subsection Antirrhinum (A. australe, A. graniticum, and three subspecies of A. majus); and some species from subsection Kickxiella (A. lopesianum and A. molle) together with subsection Streptosepalum (A. braunblanquetii). Few supp...