| | BioMed Central | Full text | Complete plastid genome sequences of Drimys, Liriodendron, and Piper: implications for the ... |
 | | This expansion has not increased the overall size of the IR in Drimys because two of the genes in the IR of Drimys are shorter than they are in Piper (ycf2 is 6909 and 6945 and ndhB is 1533 and 1686 in Drimys and Piper, respectively). |
 | | The genomes consist of 50.12% (Drimys) and 48.36% (Piper) protein-coding genes, 7.38% (Drimys) and 7.34% (Piper) RNA genes, and 42.5% (Drimys) and 44.3% (Piper) non-coding regions (intergenic spacers and introns). |
 | | Expansion and contraction of the IR is a common phenomenon in land plant plastid genomes [34] with the IR ranging in size from 9,589 bp in the moss Physcomitrella [35] to 75,741 bp in the highly rearranged angiosperm genome of Pelargonium [36,37]. |
| www.biomedcentral.com /1471-2148/6/77 (6997 words) |