Table 2.
Genes Downregulated by PPA1 Treatment
| Gene Locus | Fold Induction | P | Description |
|---|---|---|---|
| At3g11700 | 5.1 | 0.026 | β-Ig-H3 domain–containing protein/fasciclin domain–containing protein |
| At1g44110 | 4.4 | 0.013 | Cyclin, putative |
| At1g08560 | 4.0 | 0.016 | Syntaxin-related protein KNOLLE (KN)/syntaxin 111 (SYP111) |
| At5g23860 | 3.8 | 0.025 | Tubulin β-8 chain (TUB8) (TUBB8) |
| At4g03620 | 3.7 | 0.018 | Myosin heavy chain–related |
| At3g12110 | 3.6 | 0.028 | Actin11 (ACT11) |
| At4g34160 | 3.5 | 0.031 | Cyclin delta-3 (CYCD3) |
| At1g18370 | 3.2 | 0.011 | Kinesin motor family protein (NACK1) |
| At1g76540 | 3.1 | 0.023 | Cell division control protein, putative |
| At3g11520 | 3.1 | 0.027 | Cyclin, putative (CYC2) |
| At5g09870 | 5.3 | 0.025 | Cellulose synthase, catalytic subunit, putative |
| At2g23130 | 5.2 | 0.022 | Arabinogalactan protein (AGP17) |
| At1g70710 | 5.1 | 0.045 | Endo-1,4-β-glucanase (EGASE)/cellulase |
| At4g12730 | 5.1 | 0.018 | Fasciclin-like arabinogalactan protein (FLA2) |
| At5g57560 | 5.1 | 0.023 | Endo-xyloglucan transferase (TCH4) |
| At4g28250 | 4.9 | 0.023 | β-Expansin, putative (EXPB3) |
| At3g02120 | 4.6 | 0.035 | Hyp-rich glycoprotein family protein |
| At3g62110 | 4.5 | 0.006 | Glycoside hydrolase family 28 protein/polygalacturonase (pectinase) family protein |
| At4g38400 | 4.4 | 0.015 | Expansin family protein (EXPL2) |
| At3g15720 | 4.4 | 0.028 | Glycoside hydrolase family 28 protein/polygalacturonase (pectinase) family protein |
| At3g06770 | 4.1 | 0.029 | Glycoside hydrolase family 28 protein/polygalacturonase (pectinase) family protein |
| At3g03050 | 4.0 | 0.027 | Cellulose synthase family protein (CslD3) |
| At1g02730 | 3.7 | 0.006 | Cellulose synthase family protein |
| At5g64740 | 3.1 | 0.046 | Cellulose synthase, catalytic subunit, putative |
| At1g15580 | 10.1 | 0.025 | Indoleacetic acid–induced protein 5 (IAA5)/auxin-induced protein (AUX2-27) |
| At1g23080 | 6.8 | 0.013 | Auxin efflux carrier protein, putative |
| At4g32280 | 5.2 | 0.013 | Auxin-responsive AUX/IAA family protein |
| At1g73590 | 4.3 | 0.049 | Auxin efflux carrier protein, putative (PIN1) |
| At5g65670 | 4.1 | 0.013 | Indoleacetic acid–induced protein 9 (IAA9) |
| At5g43700 | 3.8 | 0.016 | Indoleacetic acid–induced protein 4 (IAA4)/auxin-induced protein (AUX2-11) |
| At1g04240 | 3.4 | 0.024 | Indoleacetic acid–induced protein 3 (IAA3) |
| At2g33310 | 3.2 | 0.036 | Indoleacetic acid–induced protein 13 (IAA13) |
| At3g62100 | 3.2 | 0.028 | Auxin-responsive protein, putative |
| At4g28640 | 3.1 | 0.025 | Indoleacetic acid–induced protein 11 (IAA11) |
Shown are genes related to cell division/cell organization, cell wall metabolism, and the auxin pathway, which are 33% or less expressed in PPA1-treated (75 μM) Arabidopsis cell cultures relative to controls. Microarray data are derived from three biologically independent experiments; details are given in Supplemental Table 2 online.