Table 3.
Variability in length and GC-content. Comparison of selected functional elements and domains within the rDNA repeat unit between the analyzed species. GC – content of GC pairs in an analyzed nucleotide sequence. In the case of species where more than one putative TIS was found, the variant with the shortest 5′ETS was considered.
| Species | rDNA | ITS1 | ITS2 | IGS | 3′ETS + NTS | 5′ETS | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GC, % | Length, bp | GC, % | Length, bp | GC, % | Length, bp | GC, % | Length, bp | GC, % | Length, bp | GC, % | Length, bp | |
| Stipa caucasica | 58.5 | 7991 | 73.3 | 221 | 76.2 | 206 | 61.2 | 2193 | 59.5 | 1513 | 65.0 | 680 |
| S. lipskyi | 58.7 | 8451 | 73.8 | 221 | 75.7 | 206 | 61.1 | 2653 | 59.4 | 1969 | 65.9 | 684 |
| S. magnifica | 58.8 | 8897 | 72.9 | 221 | 207 | 61.2 | 3098 | 60.0 | 2414 | 65.6 | 684 | |
| S. narynica | 58.7 | 8844 | 74.9 | 221 | 73.8 | 207 | 60.9 | 3045 | 59.5 | 2361 | 65.7 | 684 |
| S. orientalis | 58.4 | 8038 | 71.5 | 221 | 75.2 | 206 | 61.0 | 2239 | 59.5 | 1558 | 64.8 | 681 |
| S. pennata | 58.6 | 8031 | 71.0 | 221 | 75.1 | 205 | 61.7 | 2233 | 60.5 | 1556 | 64.4 | 677 |
| Brachypodium distachyon | 58.3 | 8078 | 63.5 | 222 | 69.0 | 216 | 62.9 | 2271 | 64.0 | 1392 | 61.1 | 879 |
| Oryza sativa | 55.0 | 7923 | 72.2 | 198 | — | — | 70.1 | 2357 | 69.6 | 1254 | 70.5 | 1103 |
| Setaria italica | 56.1 | 7779 | 57.4 | 209 | 61.5 | 213 | 57.3 | 1991 | 53.9 | 1212 | 62.6 | 779 |
| Sorghum bicolor | 54.3 | 8689 | 56.1 | 212 | 68.1 | 116 | 53.6 | 2952 | 53.5 | 2307 | 54.2 | 645 |
| Zea mays | 59.7 | 8795 | 69.9 | 219 | 74.1 | 216 | 62.5 | 3421 | 60.4 | 2591 | 69.2 | 830 |