Table 5.
Significantly enriched GO terms in the DEGs co-regulated by drought and cold*
| GO term | DEGs a | Unigenes b | Corrected P-value |
|---|---|---|---|
| Co-up-regulated | |||
| Biological process | |||
| Response to stress | 36 (21.4%) | 2565 (11.8%) | 0.05017 |
| Cellular aromatic compound metabolic process | 15 (8.9%) | 418 (1.9%) | 0.00018 |
| Defense response | 15 (8.9%) | 580 (2.7%) | 0.00935 |
| Secondary metabolic process | 11 (6.5%) | 232 (1.1%) | 0.00040 |
| Aromatic compound biosynthetic process | 10 (6.0%) | 154 (0.7%) | 6.91E-05 |
| Phenylpropanoid biosynthetic process | 9 (5.4%) | 147 (0.7%) | 0.00044 |
| Phenylpropanoid metabolic process | 9 (5.4%) | 200 (0.9%) | 0.00535 |
| Cellular component | |||
| External encapsulating structure | 9 (8.1%) | 857 (4.1%) | 1 |
| Chloroplast | 7 (6.3%) | 614 (2.9%) | 1 |
| Cell wall | 6 (5.4%) | 329 (1.6%) | 0.38977 |
| Plant-type vacuole | 3 (2.7%) | 109 (0.5%) | 0.97678 |
| Chloroplast stroma | 2 (1.8%) | 56 (0.3%) | 1 |
| Molecular function | |||
| Catalytic activity | 135 (76.7%) | 15838 (64.3%) | 0.03081 |
| Polysaccharide binding | 3 (1.7%) | 14 (0.1%) | 0.01477 |
| Pattern binding | 3 (1.7%) | 18 (0.1%) | 0.03243 |
| Carbon-nitrogen lyase activity | 3 (1.7%) | 27 (0.1%) | 0.11089 |
| Alkene binding | 2 (1.1%) | 3 (0.0%) | 0.01818 |
| Co-down-regulated | |||
| Biological process | |||
| Monocarboxylic acid metabolic process | 27 (6.5%) | 520 (2.4%) | 0.00096 |
| Fatty acid metabolic process | 24 (5.8%) | 364 (1.7%) | 5.22E-05 |
| Small molecule biosynthetic process | 23 (5.6%) | 324 (1.5%) | 2.53E-05 |
| Organic acid biosynthetic process | 22 (5.3%) | 284 (1.3%) | 1.04E-05 |
| Lipid biosynthetic process | 19 (4.6%) | 311 (1.4%) | 0.00316 |
| Fatty acid biosynthetic process | 17 (4.1%) | 138 (0.6%) | 4.13E-07 |
| Nucleobase transport | 9 (2.2%) | 41 (0.2%) | 2.18E-05 |
| Purine nucleoside transport | 5 (1.2%) | 24 (0.1%) | 0.02775 |
| Cellular component | |||
| Intrinsic to membrane | 27 (16.3%) | 2357 (11.2%) | 1 |
| Cytoplasmic vesicle | 17 (10.2%) | 1240 (5.9%) | 0.99779 |
| Vesicle | 17 (10.2%) | 1256 (6.0%) | 1 |
| Microbody part | 2 (1.2%) | 33 (0.2%) | 1 |
| Peroxisomal part | 2 (1.2%) | 33 (0.2%) | 1 |
| Molecular function | |||
| Oxidoreductase activity | 44 (18.6%) | 2608 (10.6%) | 0.01967 |
| Nucleobase transmembrane transporter activity | 6 (2.5%) | 43 (0.2%) | 0.00043 |
| Arsenate reductase activity | 3 (1.3%) | 4 (0.0%) | 0.00044 |
*The significantly enriched GO terms were determined using a corrected P-value ≤ 0.05. If no significantly enriched GO terms were identified, the top five terms were listed. anumber of DEGs assigned to certain GO term; bnumber of all reference unigenes assigned to certain GO term.