Table 1 Predominant functions of the regulons
Regulon | # of genes | Postulated physiological function | FCa |
|---|---|---|---|
1 | 1629 | mixed (tricellular and mature pollen-specific) b | ND |
2 | 1136 | Photosynthesis | 29 |
3 | 869 | protein synthesis | 65 |
4 | 583 | Mitosis | 49 |
5 | 507 | membrane transporters -metal, toxins removal (root-preferential) | 77 |
6 | 417 | embryo maturation (fruit and seed-preferential) | 25 |
7 | 330 | developmental regulation (leaf apex- preferential) | 38 |
8 | 281 | information (uninucleate microspore and bicellular pollen-specific) | 64 |
9 | 234 | response to environmental stimuli | 26 |
10 | 223 | protein modification, defense response | 66 |
11 | 215 | nuclear, others with very low expression | ND |
12 | 182 | mixed (fruit-preferential) | ND |
13 | 154 | upregulated in 'response to CO2 levels' experiment | ND |
14 | 140 | regulation of organ development | 61 |
15 | 138 | plastid stress and circadian rhythm | 56 |
16 | 121 | Information | 58 |
17 | 115 | Information | 51 |
18 | 100 | cell wall, respiration/catabolism (pollen-specific; highest in tricellular pollen) | 46 |
19 | 96 | mixed (flower-preferential) | ND |
20 | 94 | Information | 80 |
21 | 92 | secondary products, secondary wall (flower-specific, mostly tapetum) | 54 |
22 | 81 | cell wall biosynthesis, carbohydrate metabolism | 47 |
23 | 77 | membrane proteins | 69 |
24 | 71 | defense response | 70 |
25 | 70 | defense response | 77 |
26 | 68 | Information | 79 |
27 | 68 | regulation, root (root- and hypocotyl-preferential) | 73 |
28 | 66 | nucleic acid binding, regulation | 60 |
29 | 63 | aerobic respiration in mitochondria | 92 |
30 | 56 | Signalling | 89 |
31 | 52 | defense response | 25 |
32 | 48 | nuclear genes, RNA processing, DNA replication | 70 |
33 | 48 | chloroplast organization and biogenesis | 62 |
34 | 47 | mitochondrial genes | 96 |
35 | 45 | kinases, signaling, disease resistance | 69 |
36 | 43 | lipid modification and cuticular wax synthesis (flowers and shoot apex-specific) | 54 |
37 | 42 | heat shock response | 60 |
38 | 40 | RNA processing, translation, transcription regulation | 82 |
39 | 40 | catabolic processes deriving energy | 51 |
40 | 40 | transcription, translation, protein folding and transport | 86 |
41 | 36 | regulation, information | 83 |
42 | 34 | Regulation | 78 |
43 | 33 | flower/fruit, cell wall depositions (flower/fruit-preferential) | 48 |
44 | 31 | metabolic processes in flowers/fruit (flower/fruit-specific) | 22 |
45 | 30 | proteasome complex | 87 |
46 | 29 | defense response | 50 |
47 | 29 | nuclear, replication, chromosome organization, cell cycle | 67 |
48 | 28 | cell culture and tumor specific | ND |
49 | 27 | chloroplast-encoded | 100 |
50 | 27 | Signalling | 90 |
51 | 26 | organ specification in shoot (leaf apex- and hypocotyl-preferential) | 35 |
52 | 26 | endoplasmic reticulum: protein folding and secretion/redox function | 73 |
53 | 25 | fatty acid biosynthesis | 83 |
54 | 23 | protein degradation and lipid modification | 59 |
55 | 23 | epidermal/cuticular deposits | 43 |
56 | 22 | nectaries/carpel specific function (carpel-specific) | 29 |
57 | 22 | phloem specific (vasculature tissues-specific) | 26 |
58 | 22 | transposases, mostly CACTA-type | 100 |
59 | 21 | metabolism and transport of triterpenoids (root hairs-preferential) | 71 |
60 | 21 | ubiquitin ligase | 53 |
61 | 20 | metabolism of glutathione and glutamate, redox | 56 |
62 | 20 | information, nuclear | 78 |
63 | 20 | stress-induced catabolism, mediated by jasmonic acid | 72 |
64 | 20 | information, nuclear | 87 |
65 | 20 | secondary metabolism/pathogen infection | 61 |
66 | 20 | exocytosis | 29 |
67 | 20 | Ca 2+ – triggered exocytosis (pathogen response?) | 60 |
68 | 20 | shoot meristem development and nucleic acid binding (leaf apex and hypocotyl – preferential) | 69 |
69 | 20 | leucine/glucosinolates metabolism | 65 |