Table 1. Three subfamilies of bHLH genes in Arabidopsis involved in root epidermis development.
| bHLH Sub-family* | AGI Gene ID | bHLH Gene Name | Relative Transcript Accumulation in Root Epidermis Cell Types** (ATH1 signal from hairy / non-hairy lines) | |
| Michigan Dataset | Duke Dataset | |||
| IIIf | AT1G63650 | EGL3 | 3.8 (0.1) | 7.4 (26) |
| IIIf | AT4G00480 | MYC1 | 30 (<0.1) | 12.5 (2) |
| IIIf | AT4G09820 | TT8 | 1.1 (65) | 1.0 (79) |
| IIIf | AT5G41315 | GL3 | Not represented on ATH1 chip | |
| VIIIc | AT1G27740 | bHLH54 | 37 (<0.1) | 11.7 (<0.1) |
| VIIIc | AT1G66470 | RHD6 | 37 (<0.1) | 10.3 (1.2) |
| VIIIc | AT2G14760 | bHLH84 | Not represented on ATH1 chip | |
| VIIIc | AT4G33880 | bHLH85 | Not represented on ATH1 chip | |
| VIIIc | AT5G37800 | bHLH86 | Not represented on ATH1 chip | |
| XI | AT1G03040 | bHLH7 | 0.8 (22) | 0.7 (4.8) |
| XI | AT2G24260 | bHLH66 | 15.7 (<0.1) | 7.7 (<0.1) |
| XI | AT4G02590 | bHLH59 | 0.5 (2.2) | 0.8 (3.8) |
| XI | AT4G30980 | bHLH69 | Not represented on ATH1 chip | |
| XI | AT5G58010 | bHLH82 | 49 (<0.1) | 10 (1.5) |
*The bHLH gene numbering and subfamily organization (based on structural similarities and bHLH domain sequence) have been previously defined [53].
**Values represent the average fold-change from a multi-way SAM of wer myb23, ttg, and gl3 egl3 versus cpc try. False discovery rate (q-value) is shown in parentheses.