Fig. 1

Phylogenetic and genetic relationships in the Nod-independent Aeschynomene clade. Phylogenetic reconstructions were obtained using the Neighbor Joining method. a ITS phylogeny. Accessions with ITS sequence divergence < 1% were clustered together. Numbers of accessions per taxon are indicated in brackets. b Phylogeny based on 5 concatenated low-copy nuclear gene fragments: CYP1, eiF1α, SUI1, SuSy and a gene homolog to Glyma.07G136800 and Glyma.18G187300. -A, -B and -C indicate the different copies found in polyploid species. The four gene pools are identified with a circled number and the A. evenia and A. sensitiva groups are framed in a box bordered with a dashed red line. Diploid taxa are in black and polyploid taxa in blue with ploidy level indicated. Numbers at nodes represent bootstrap values (% of 1000 replicates)