Bamboo cDNA similarity comparison and functional classification. (A) Similarity search of bamboo sequence against closely related grasses. Right half of the pie, the proportion of bamboo cDNAs with homologs in rice, of which the proportion that also hit barley, wheat, and Brachypodium is colored blue. Left half, bamboo cDNAs with no homologs found in rice, of which the proportion that also had no hit in the barley, wheat, and Brachypodium is colored gray. (B) Functional classification of bamboo cDNAs with and without homologs with other grasses. Blue bars represent cDNAs from the blue portion of the pie shared by all grasses compared, and gray bars represent cDNAs from the gray portion of the pie which is presumably bamboo unique.