Figure 2

Bayesian phylogenetic analysis of NBS-LRR amino acid sequences from M. acuminata Calcutta 4, O. sativa and A. thaliana. The majority rule consensus tree was derived from analysis of a common NBS region between the kinase 2 and GLPL motifs, and included 33 M. acuminata Calcutta 4 sequences, together with 21 representative non-TIR NBS-LRR domain sequences from A. thaliana and 43 from O. sativa. Clade numbers are included to facilitate discussion of data. All additional information for Musa tree sequences are summarised in Table 3. The branch lengths are proportional to the average number of amino acid substitutions per site, as indicated by the scale.