Fig. 6

The phylogenetic relationships and gene distribution in mitogenomes of A. longiglumis compared with 23 Poaceae species. A Maximum Likelihood (ML) and Bayesian Inference (BI) tree reconstructing the phylogenetic relationships of mitochondrial genomes. The subfamilies of Poaceae (colored blocks) are only weakly resolved in red nodes. The tree is based on nucleotide sequences of 30 conserved mitochondrial PCGs (atp1, atp4, atp6, atp8, atp9, nad1, nad2, nad3, nad4, nad4L, nad5, nad6, nad7, nad9, ccmB, ccmC, ccmFC, ccmFN cox1, cox2, cox3, cob, mttB, matR, rpl16, rps1, rps3, rps7, rps12 and rps13). The ML topology is indicated with ML bootstrap support values and BI posterior probabilities at each node; red nodes represent bootstrap support less than 100% (ML) or 1 (BI). Two other monocotyledonous species (Cyperus esculentus and Phoenix dactylifera) are used as outgroups. B Presence of non-core mitochondrial genes in Poaceae where filled squares represent presence of at least one complete copy. While some features are shared in subfamilies, there is substantial variation; A. longiglumis (red shading) shows characteristic differences. _cp (green): tRNA genes that migrated from plastome; _mt represents mitochondria-native tRNA genes