Table 5.
Classification of drought-inducible functional proteins into different categories according to sequence similarity with previously known genes.
| Protein functions category | No of total unigenes | C1 versus D1 | C4 versus D4 | C5 versus D5 | C6 versus D6 | ||||
|---|---|---|---|---|---|---|---|---|---|
| Up-regulated | Down-regulated | Up-regulated | Down-regulated | Up-regulated | Down-regulated | Up-regulated | Down-regulated | ||
| DEGs involved in osmotic adjustment | |||||||||
| Arginine decarboxylase | 11 | 0 | 0 | 1 | 0 | 7 | 0 | 1 | 0 |
| Choline monooxygenase | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Pyrroline-5-carboxylate synthase | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| S-adenosylmethionine decarboxylase | 17 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 2 |
| Trehalose-phosphate phosphatase | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| Galactinol synthase | 3 | 0 | 0 | 3 | 0 | 3 | 0 | 3 | 0 |
| DEGs involved in detoxification | |||||||||
| Respiratory burst oxidase | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| superoxide dismutase | 22 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 5 |
| Catalase | 48 | 0 | 0 | 0 | 1 | 1 | 6 | 14 | 8 |
| Peroxidase | 94 | 0 | 0 | 1 | 15 | 6 | 19 | 22 | 31 |
| Glutathione reductase | 3 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0 |
| Dehydroascorbate reductase | 15 | 0 | 0 | 0 | 0 | 6 | 3 | 8 | 3 |
| Glutathione peroxidase | 7 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 |
| Glutathione S-transferase | 62 | 0 | 0 | 7 | 0 | 8 | 8 | 21 | 14 |
| Ascorbate peroxidase | 15 | 0 | 0 | 0 | 3 | 1 | 4 | 0 | 8 |
| Metallothionein | 11 | 0 | 0 | 2 | 0 | 0 | 0 | 4 | 0 |
| DEGs involved in osmotic protection, transporters and channels | |||||||||
| Aquaporin | 58 | 0 | 0 | 0 | 19 | 2 | 29 | 3 | 35 |
| ABC transporter family protein | 382 | 0 | 0 | 28 | 43 | 61 | 54 | 72 | 84 |
| Multidrug resistance protein ABC-transporter protein | 21 | 0 | 0 | 2 | 3 | 5 | 2 | 5 | 6 |
| Chloride channel | 9 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 1 |
| Betaine aldehyde dehydrogenase | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
| Delta-1-pyrroline-5-carboxylate synthetase | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Proline oxidase/dehydrogenase | 4 | 0 | 0 | 4 | 0 | 0 | 0 | 1 | 0 |
| LEA proteins | |||||||||
| Late embryogenesis abundant protein | 12 | 0 | 0 | 2 | 3 | 3 | 3 | 1 | 3 |
| Dehydrin | 18 | 0 | 0 | 14 | 0 | 16 | 0 | 15 | 0 |
| Others | |||||||||
| Pathogenesis-related protein | 7 | 0 | 0 | 0 | 0 | 5 | 0 | 7 | 0 |
| Drought-related protein | 12 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 |
| Dehydration-related protein | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
| Heat shock protein | 60 | 0 | 0 | 2 | 0 | 18 | 2 | 8 | 0 |