Table 1.
Frequency table of perfect and imperfect microsatellites grouped by type of repeat in the non-redundant rice genome (IRGSPnr), rice gene index (Osgi), barley gene index (Hvgi) and wheat's gene index (Tagi) under nine different constraints for minimum SSR length, starting at a minimum of 12 bp. 'n' is SSR count, 'f' is relative proportion (fraction). 'U.f' is unigene fraction: the percentage of unigenes from that species containing at least one SSR.
Dataset | SSRLength | > = 12 | > = 14 | > = 15 | > = 16 | > = 18 | > = 20 | > = 24 | > = 30 | > = 40 | |||||||||
SSR type | n | f | n | f | n | f | n | f | n | f | n | f | n | f | n | f | n | f | |
Osgi | dinucleotide | 1751 | 0.07 | 1206 | 0.09 | 950 | 0.07 | 950 | 0.14 | 673 | 0.12 | 507 | 0.16 | 366 | 0.25 | 237 | 0.45 | 136 | 0.67 |
trinucleotide | 17342 | 0.67 | 8921 | 0.63 | 8921 | 0.65 | 4272 | 0.62 | 4272 | 0.75 | 1993 | 0.62 | 912 | 0.61 | 242 | 0.46 | 56 | 0.28 | |
tetranucleotide | 4039 | 0.16 | 1242 | 0.09 | 1242 | 0.09 | 1242 | 0.18 | 275 | 0.05 | 275 | 0.09 | 84 | 0.06 | 18 | 0.03 | 9 | 0.04 | |
pentanucleotide | 2706 | 0.10 | 2706 | 0.19 | 2706 | 0.20 | 458 | 0.07 | 458 | 0.08 | 458 | 0.14 | 124 | 0.08 | 33 | 0.06 | 2 | 0.01 | |
Total SSR | 25838 | 14075 | 13819 | 6922 | 5678 | 3233 | 1486 | 530 | 203 | ||||||||||
U.f | 50% | 27% | 27% | 13% | 11% | 6% | 3% | 1% | 0.4% | ||||||||||
Hvgi | dinucleotide | 1304 | 0.07 | 916 | 0.10 | 706 | 0.08 | 706 | 0.15 | 508 | 0.15 | 387 | 0.17 | 237 | 0.25 | 162 | 0.48 | 96 | 0.67 |
trinucleotide | 9176 | 0.52 | 4326 | 0.45 | 4326 | 0.46 | 1990 | 0.43 | 1990 | 0.57 | 971 | 0.42 | 464 | 0.48 | 115 | 0.34 | 34 | 0.24 | |
tetranucleotide | 4122 | 0.23 | 1359 | 0.14 | 1359 | 0.15 | 1359 | 0.29 | 379 | 0.11 | 379 | 0.16 | 103 | 0.11 | 10 | 0.03 | 4 | 0.03 | |
pentanucleotide | 2976 | 0.17 | 2976 | 0.31 | 2976 | 0.32 | 594 | 0.13 | 594 | 0.17 | 594 | 0.25 | 157 | 0.16 | 53 | 0.16 | 10 | 0.07 | |
Total SSR | 17578 | 9577 | 9367 | 4649 | 3471 | 2331 | 961 | 340 | 144 | ||||||||||
U.f | 36% | 20% | 19% | 10% | 7% | 5% | 2% | 1% | 0.3% | ||||||||||
Tagi | dinucleotide | 2606 | 0.08 | 1890 | 0.11 | 1526 | 0.09 | 1526 | 0.18 | 1122 | 0.18 | 890 | 0.22 | 668 | 0.32 | 478 | 0.54 | 317 | 0.70 |
trinucleotide | 18650 | 0.55 | 8671 | 0.50 | 8671 | 0.51 | 3847 | 0.46 | 3847 | 0.61 | 1840 | 0.45 | 989 | 0.48 | 343 | 0.39 | 124 | 0.27 | |
tetranucleotide | 8189 | 0.24 | 2253 | 0.13 | 2253 | 0.13 | 2253 | 0.27 | 572 | 0.09 | 572 | 0.14 | 181 | 0.09 | 26 | 0.03 | 8 | 0.02 | |
pentanucleotide | 4570 | 0.13 | 4570 | 0.26 | 4570 | 0.27 | 773 | 0.09 | 773 | 0.12 | 773 | 0.19 | 243 | 0.12 | 33 | 0.04 | 5 | 0.01 | |
Total SSR | 34015 | 17384 | 17020 | 8399 | 6314 | 4075 | 2081 | 880 | 454 | ||||||||||
U.f | 31% | 16% | 16% | 8% | 6% | 4% | 2% | 1% | 0.4% | ||||||||||
IRGSPnr | dinucleotide | 32202 | 0.17 | 23056 | 0.21 | 18541 | 0.17 | 18541 | 0.33 | 14081 | 0.34 | 11286 | 0.39 | 8516 | 0.53 | 6307 | 0.72 | 4284 | 0.81 |
trinucleotide | 78832 | 0.41 | 38759 | 0.35 | 38759 | 0.36 | 17615 | 0.31 | 17615 | 0.43 | 8392 | 0.29 | 4431 | 0.28 | 1400 | 0.16 | 582 | 0.11 | |
tetranucleotide | 48836 | 0.25 | 15030 | 0.14 | 15030 | 0.14 | 15030 | 0.26 | 3789 | 0.09 | 3789 | 0.13 | 1636 | 0.10 | 625 | 0.07 | 378 | 0.07 | |
pentanucleotide | 34102 | 0.18 | 34102 | 0.31 | 34102 | 0.32 | 5591 | 0.10 | 5591 | 0.14 | 5591 | 0.19 | 1401 | 0.09 | 385 | 0.04 | 54 | 0.01 | |
Total SSR | 193972 | 110947 | 106432 | 56777 | 41076 | 29058 | 15984 | 8717 | 5298 |