Table 4.
Distribution and frequency of simple sequence repeats (SSRs) detected in different plant species
| A. thaliana | B. napus | M. acuminata | O. sativa | P. equestris | V. vinifera | Z. mays | |
|---|---|---|---|---|---|---|---|
| No. of BESs | 26,068 | 88,825 | 6,376 | 78,427 | 5,506 | 31,907 | 54,960 |
| Total sequence length (bp) | 13,987,589 | 39,551,595 | 4,517,901 | 69,423,321 | 4,520,220 | 18,117,956 | 37,410,959 |
| Mononucleotides | 40.3 (878) | 7.5 (320) | 0.8 (6) | 9.1 (696) | 29.9a (284)b | 6.0 (188) | 7.2 (167) |
| Dinucleotides | 13.1 (285) | 36.2 (1,551) | 47.7 (350) | 19.9 (1,531) | 34.3 (326) | 28.0 (881) | 15.4 (358) |
| Trinucleotides | 21.2 (462) | 20.4 (876) | 20.6 (151) | 28.9 (2,219) | 11.0 (104) | 18.7 (586) | 35.7 (831) |
| Tetranucleotides | 3.9 (84) | 6.9 (294) | 9.0 (66) | 10.2 (783) | 5.3 (50) | 14.9 (467) | 8.3 (193) |
| Pentanucleotides | 15.3 (333) | 21.2 (911) | 13.1 (96) | 21.4 (1,642) | 13.5 (128) | 21.4 (673) | 21.6 (504) |
| Hexanucleotides | 6.3 (137) | 7.9 (338) | 8.9 (65) | 10.5 (804) | 6.1 (58) | 11.0 (347) | 11.9 (276) |
| Total SSRs | 2,179 | 4,290 | 734 | 7,675 | 950 | 3,142 | 2,329 |
| SSR frequencyc | 6.4 | 9.2 | 6.2 | 9 | 4.8 | 5.8 | 16.1 |
| Most frequent SSR motif | A/T | AT/TA | AT/TA | CCG/CGG | A/T | AT/TA | AGC/GCT |
a Percentage of SSRs in each category
b Number of SSRs in each category
c Average estimated distance between SSRs (kb)