Chloroplast DNA type network analysis in the genus Arabidopsis. The chloroplast DNA (trnLF) network from the TCS analysis  recognized 71 cpDNA suprahaplotypes and two additional suprahaplotypes from A. thaliana/A. suecica. The size of the circle represents the number of sequence types within the suprahaplotype. Dash lines indicate not significant connections as revealed with maximum-likelihood tree building analysis. Detailed accession data are provided with Additional file 5.