Table 1.
DNA methylation status in barley leaves and roots under specific water conditions
MSAP band type a | Leaves | Roots | ||||
---|---|---|---|---|---|---|
Control | Water deficit stress | Rewatering | Control | Water deficit stress | Rewatering | |
I | 180 | 194 | 202 | 162 | 152 | 181 |
II | 156 | 131 | 152 | 96 | 87 | 79 |
III | 303 | 273 | 286 | 288 | 298 | 278 |
IV | 8 | 49 | 7 | 7 | 16 | 15 |
Total analysed bands | 647 | 647 | 647 | 553 | 553 | 553 |
Total methylated bandsb | 467 | 453 | 445 | 391 | 401 | 372 |
Fully methylated bandsc | 311 | 322 | 293 | 295 | 314 | 293 |
MSAP (%)d | 72.1 | 70.0 | 68.8 | 70.7 | 72.5 | 67.3 |
Hemi-methylated ratio (%)e | 24.1 | 20.3 | 23.5 | 17.4 | 15.7 | 14.3 |
Fully methylated ratio (%)f | 48.1 | 49.8 | 45.3 | 53.4 | 56.8 | 53.0 |
a Type I is the presence of bands in both EcoRI/HpaII and EcoRI/MspI digests and indicates the absence of methylation; type II are bands generated in EcoRI/HpaII digests but not in EcoRI/MspI digests; type III bands appear in EcoRI/MspI digests but not in EcoRI/HpaII digests; and type IV represents the absence of band in both enzyme combinations
b Total methylated bands are II+III+IV bands.
c Fully methylated are III+IV bands.
d MSAP is a percentage ratio of total methylated bands (II+III+IV) to total amplified bands.
e Hemi-methylated ratio is a percentage ratio of total hemi-methylated bands (II) to total amplified bands.
f Fully methylated ratio is a percentage ratio of fully methylated bands (III+IV) to total amplified bands.