The remaining grape models generally possessed an incomplete R2 repeat, so were not included in this analysis.
Using the alignment parameters and statistic tests previously described by Salse et al. [ 42, 43], we analysed the orthologous relationships between oak, Arabidopsis (33,198 gene models), poplar (30,260 gene models), grape (21,189 gene models) and soybean (46,194 gene models) genomes.
Seven Arabidopsis MYB genes and the grape gene model GSVIVT16947001 could not be positioned in these groups.
The grape gene models dataset contains 30,434 predicted gene loci [ 18].
None of the grape gene models were grouped within the Arabidopsis 'glucosinolate' clade (Additional file 4).
Enrichment of 3'-ends of transcripts was verified by mapping 454 reads against grape gene models (Additional file 3).
Grape protein models with a complete R2R3 domain (91 sequences), seven characterised grape proteins and 126 Arabidopsis homologues were included in the first phylogeny.
Mapping of the reads to grape gene models [ 18] of at least 1,000 nt in length, confirmed that the two libraries were representing the 3' ends of transcripts.
These resources enable us to identify grape as a model plant for studies on non-climacteric anthocyanin accumulating fruits, beside tomato, which is currently the model plant for climacteric carotenoid accumulating fruits.
