Sequence comparison of the potato Pht1 genes revealed similar amino acid sizes and high sequence identities to their corresponding orthologues from tomato (Additional files 4 and 5).
Comparison of these potato upregulated ribosomal genes in Arabidopsis through BLAST (E-value < -10) sequence similarity searches identified 55 nuclear ribosomal subunits [ 13].
For example, comparison of tomato and potato, the largest gene indices, revealed that 76 78% of the sequences had a match in the respective gene index.
When applied to the comparison of six classically bred potato cultivars to six genetically modified (GM) lines engineered to synthesize health beneficial inulins, the glycoalkaloid content in potato peels of all GM lines was found within the range of the six cultivars.
For example, combination of cow dung with NPK (15:15:15) in the concentration of 3 t/ha and 100 kg/ha, respectively, showed marked increase of 8.9 t/ha in the yield of potato tuber in comparison to control that yielded only 1.8 t/ha.
Comparison of the R2 region across potato and tomato in this study allows us to make some broad conclusions regarding the evolutionary history of the locus.
Attempts to get a synthetic view of the loci controlling polygenic late blight resistance in potato with comparison of their positions with maturity QTLs have already been published [ 21, 22].
The comparison of photoperiodically regulated genes between potato and tobacco revealed conserved, but also species-specific responses, showing that adaptations to changes in the light environment have evolved multiple times and represent a mixture of ancient as well as recent evolutionary processes.
Comparison of chloroplast DNA in several potato species suggests that the expression of CMS in this group is not controlled by cpDNA [ 9], as also noted in other species like maize, rice, petunia, sunflower, wheat, Brassica and Phaseolus [for reviews see [ 8, 10, 11]].
