Fig 1. Phylogenetic trees of putative barley and rice aquaporin sequences.

A. PIPs and TIPs; B. NIPs and SIPs. The phylogenetic trees were constructed in MEGA4.1 (maximum likelihood with bootstraps) based on the sequence alignments shown in S1 Fig. The different sub-families and groups are highlighted in different shades of grey. The AQPs annotated in this study are shown in bold. The branches corresponding to barley AQPs are shown as dashed lines while those for rice are solid lines.