Table 2. Significantly altered biochemical pathways and their corresponding gene expression between tolerant and sensitive tomato genotypes under cold stress.
| Unigene ID | Relative expression levelA | Annotation | ||
| LA1777 | LA3969 | LA4024 | ||
| Jasmonic acid biosynthesis | ||||
| SGN-U234711 | 0.81 | −1.16 | −2.34 | Lipoxygenase |
| SGN-U214851 | 1.02 | −1.22 | −2.36 | Lipoxygenase |
| AJ242551 | −1.08 | −0.91 | −2.41 | 12-oxophytodienoate reductase |
| SGN-U228308 | −0.69 | −0.81 | −2.63 | 12-oxophytodienoate reductase |
| SGN-U217795 | 3.27 | 3.45 | 4.45 | Allene oxide synthase |
| Brassinosteroid metabolic process | ||||
| SGN-U221699 | 0.67 | 1.77 | 2 | Cytochrome P450 |
| SGN-U233201 | 5.39 | 3.73 | 2.59 | UDP-glucosyltransferase |
| SGN-U215317 | 5.52 | 5.63 | 3.95 | UDP-glucosyltransferase |
| SGN-U221349 | 6.11 | 4.27 | 3.1 | UDP-glucosyltransferase |
| Starch degradation | ||||
| SGN-U213712 | −0.56 | −1.7 | −2.24 | Beta-amylase |
| Phenylpropanoid biosynthesis, initial reactions | ||||
| SGN-U239712 | 3.04 | 2.66 | 1.88 | Phenylalanine ammonialyase |
| Leucine biosynthesis | ||||
| SGN-U213969 | 0.38 | 2.5 | 3.2 | 2-isopropylmalate synthase A |
| Calvin cycle | ||||
| SGN-U225498 | 4.24 | 3.46 | 2.28 | RuBisCO small subunit 3B |
| Removal of superoxide radicals | ||||
| SGN-U232054 | −4.12 | −4 | −2.66 | Catalase |
The 92 genes with significant differences in expression between tolerant and sensitive genotypes at 3 d of cold treatment (4°C) were analyzed for significantly (p<0.05) altered biochemical pathways using the Plant MetGenMAP system [33]. (A) Positive (up-regulated) and negative (down-regulated) expression values (log2 ratio cold stress/control) are means of three independent biological replicates.