Figure 1.
Phylogenetic relationships within the bacterial genus Burkholderia.
The tree is based on 16S rDNA, gyrB and recA data. Numbers on branches represent Bayesian posterior probabilities and maximum parsimony bootstrap support. Gousiekte-inducing plants are indicated in grey boxes. Numbers between brackets correspond to the numbers in Table S1.
Figure 2.
Adapted phylogenetic tree of the plant family Rubiaceae [36].
The gousiekte-inducing plants are part of the subfamily Ixoroideae, one of the three subfamilies in Rubiaceae. Nevertheless, they are not closely related as they belong to different tribes: Fadogia and Vangueria belong to Vanguerieae, while Pavetta belongs to Pavetteae. The respective tribes are indicated in capital letters.