Table 2. Selected examples of genes preferentially expressed in guard cells.
| AGI Gene Identifier | Guard Cell SI | Leaf SI | Fold Difference | Gene Name/Description |
| Regulation of Transcription | ||||
| At2g38300 | 10.2 | 4.0 | 74.8 | DNA binding/transcription factor |
| At1g08810 | 10.3 | 5.4 | 30.9 | MYB60 (myb domain protein 60)/transcription factor |
| At5g05410 | 12.3 | 7.4 | 29.5 | DREB2A; DNA binding/transcription factor |
| At4g05100 | 10.3 | 5.9 | 22.0 | AtMYB74 (myb domain protein 74); transcription factor |
| At3g28910 | 10.7 | 6.4 | 19.0 | MYB30 (MYB DOMAIN PROTEIN 30); transcription factor |
| At2g40260 | 9.0 | 4.8 | 18.6 | myb family transcription factor |
| At3g26744 | 11.4 | 7.5 | 15.0 | ICE1 (INDUCER OF CBF EXPRESSION 1); transcription factor |
| At1g01250 | 8.3 | 4.5 | 13.8 | AP2 domain-containing transcription factor, putative |
| At5g67180 | 7.8 | 4.1 | 13.8 | AP2 domain-containing transcription factor, putative |
| At1g77450 | 10.8 | 7.1 | 12.9 | anac032 (NAC domain protein 32); transcription factor |
| At1g62300 | 11.1 | 7.5 | 12.8 | WRKY6; transcription factor |
| At4g21440 | 9.1 | 5.4 | 12.8 | ATMYB102 (MYB-LIKE 102); transcription factor |
| At3g24140 | 10.4 | 6.8 | 12.6 | FMA (FAMA); transcription factor |
| At1g12610 | 8.6 | 5.5 | 8.3 | DDF1; transcription factor |
| At5g63790 | 12.0 | 9.2 | 7.1 | ANAC102 (NAC domain protein 102); transcription factor |
| At1g12860 | 9.3 | 6.5 | 7.0 | SCRM2 (SCREAM 2); DNA binding/transcription factor |
| At2g46830 | 9.1 | 6.4 | 6.5 | CCA1 (circadian clock associated 1); transcription factor |
| At4g01250 | 10.7 | 8.2 | 5.8 | WRKY22; transcription factor |
| Signaling and hormone perception | ||||
| At1g62400 | 11.7 | 4.9 | 111.7 | HT1 (high leaf temperature 1); protein kinase |
| At1g11340 | 10.5 | 4.8 | 54.7 | S-locus lectin protein kinase family protein |
| At1g11410 | 11.5 | 5.8 | 49.7 | S-locus protein kinase, putative |
| At2g46070 | 11.7 | 6.1 | 47.1 | MPK12 (MITOGEN-ACTIVATED PROTEIN KINASE 12) |
| At4g24480 | 10.2 | 5.2 | 32.9 | serine/threonine protein kinase, putative |
| At2g30500 | 11.2 | 6.2 | 31.8 | kinase interacting family protein |
| At3g22840 | 10.2 | 5.2 | 31.8 | ELIP1 (early light-inducible protein); chlorophyll binding |
| At5g53890 | 10.4 | 5.5 | 29.4 | leucine-rich repeat transmembrane protein kinase |
| At4g14480 | 9.8 | 5.0 | 26.1 | protein kinase family protein |
| At2g21880 | 10.0 | 5.4 | 22.8 | ATRAB7A; GTP binding |
| At2g40180 | 10.4 | 6.0 | 20.9 | ATHPP2C5; protein serine/threonine phosphatase |
| At1g26600 | 8.8 | 4.5 | 19.0 | CLE9 (CLAVATA3/ESR-RELATED 9); receptor binding |
| At5g20270 | 11.3 | 7.1 | 18.1 | HHP1 (HEPTAHELICAL TRANSMEMBRANE PROTEIN1) |
| At1g07570 | 11.3 | 7.2 | 17.8 | APK1A; kinase/protein serine/threonine kinase |
| At4g33950 | 11.4 | 7.3 | 17.4 | OST1 (OPEN STOMATA 1); serine/threonine kinase |
| At5g07280 | 9.2 | 5.1 | 16.9 | EMS1 (EXCESS MICROSPOROCYTES1); protein kinase |
| At3g24720 | 9.2 | 5.2 | 16.1 | protein kinase, putative |
| At3g49260 | 10.1 | 6.3 | 14.2 | iqd21 (IQ-domain 21); calmodulin binding |
| At2g40120 | 8.7 | 4.9 | 13.8 | protein kinase family protein |
| At3g17790 | 10.1 | 6.5 | 12.4 | PAP17; protein serine/threonine phosphatase |
| At2g24540 | 9.8 | 6.1 | 12.4 | AFR (ATTENUATED FAR-RED RESPONSE) |
| At5g43020 | 8.5 | 4.9 | 12.1 | leucine-rich repeat transmembrane protein kinase |
| At5g06750 | 10.7 | 7.1 | 11.9 | protein phosphatase 2C family protein |
| At5g14640 | 10.1 | 6.6 | 11.1 | SK13 (SHAGGY-LIKE KINASE 13); protein kinase |
| At5g57050 | 9.6 | 6.2 | 10.5 | ABI2 (ABA INSENSITIVE 2); serine/threonine phosphatase |
| At3g14720 | 10.4 | 7.0 | 10.4 | ATMPK19; MAP kinase |
| At4g30610 | 8.6 | 5.2 | 10.3 | BRS1 (BRI1 SUPPRESSOR 1); serine-type carboxypeptidase |
| At3g18040 | 10.3 | 7.0 | 9.7 | MPK9 (MAP KINASE 9); MAP kinase |
| At5g24270 | 9.2 | 6.0 | 9.4 | SOS3/calcium-dependent serine/threonine phosphatase |
| At1g80080 | 7.5 | 4.2 | 9.4 | TMM (TOO MANY MOUTHS); protein binding/receptor |
| At1g74740 | 8.9 | 5.8 | 8.7 | CPK30; calmodulin-dependent protein kinase |
| At4g37580 | 8.2 | 5.1 | 8.3 | HLS1 (HOOKLESS 1); N-acetyltransferase |
| At1g31930 | 10.5 | 7.6 | 7.2 | XLG3 (extra-large GTP-binding protein 3) |
| At2g40940 | 10.4 | 7.9 | 5.7 | ERS1 (ETHYLENE RESPONSE SENSOR 1); protein kinase |
| At5g15230 | 11.6 | 9.2 | 5.1 | GASA4 (GAST1 PROTEIN HOMOLOG 4) |
| At4g26080 | 11.3 | 9.0 | 4.7 | ABI1 (ABA INSENSITIVE 1); serine/threonine phosphatase |
| At4g37590 | 9.2 | 7.0 | 4.5 | NPY5 (NAKED PINS IN YUC MUTANTS 5); signal transducer |
| At1g01560 | 10.5 | 8.4 | 4.5 | ATMPK11; MAP kinase/kinase |
| Transport | ||||
| At3g25620 | 11.3 | 5.4 | 56.8 | ABC transporter family protein |
| At3g53720 | 12.4 | 6.7 | 54.8 | ATCHX20 (CATION/H+ EXCHANGER 20) |
| At1g12480 | 10.6 | 4.9 | 53.4 | OZS1 (OZONE-SENSITIVE 1); transporter |
| At4g18050 | 9.9 | 4.2 | 51.6 | PGP9 (P-GLYCOPROTEIN 9); ATPase, transporter |
| At1g24400 | 10.7 | 5.4 | 38.4 | LHT2 (LYSINE HISTIDINE TRANSPORTER 2) |
| At3g47750 | 9.0 | 3.8 | 37.6 | ABCA4 (ATP binding cassette family A4)/transporter |
| At3g52310 | 10.7 | 5.5 | 37.1 | ABC transporter family protein |
| At4g18290 | 9.9 | 4.8 | 34.4 | KAT2 (POTASSIUM CHANNEL IN ARABIDOPSIS THALIANA 2) |
| At2g29940 | 9.4 | 4.3 | 33.1 | PDR3 (PLEIOTROPIC DRUG RESISTANCE 3); transporter |
| At5g46240 | 10.4 | 5.6 | 26.4 | KAT1 (POTASSIUM CHANNEL IN ARABIDOPSIS THALIANA 1) |
| At2g47000 | 9.8 | 5.1 | 26.2 | ABCB4 (ATP BINDING CASSETTE subfamily 4 transporter) |
| At5g48485 | 12.1 | 7.5 | 25.1 | DIR1; lipid transporter |
| At5g37500 | 9.3 | 4.7 | 24.2 | GORK (gated outwardly rectifying K+channel) |
| At2g24520 | 10.3 | 6.0 | 19.6 | AHA5 (Arabidopsis H(+)-ATPase 5); ATPase |
| At2g28260 | 9.2 | 4.9 | 19.6 | ATCNGC15; calmodulin binding/cation channel |
| At1g28010 | 9.0 | 5.1 | 15.5 | PGP14 (P-GLYCOPROTEIN 14); ATPase, transporter |
| At3g05030 | 9.7 | 6.1 | 12.3 | NHX2 (SODIUM HYDROGEN EXCHANGER 2) |
| At1g17840 | 11.2 | 7.9 | 9.4 | WBC11; ATPase/fatty acid transporter |
| At2g38940 | 8.3 | 5.1 | 9.0 | ATPT2; phosphate transporter/sugar:hydrogen symporter |
| At4g18910 | 10.5 | 7.4 | 8.8 | NIP1;2; transmembrane transporter/water channel |
| At5g44110 | 9.1 | 6.0 | 8.6 | POP1; CER6 |
| At3g02850 | 7.4 | 4.5 | 7.4 | SKOR; cyclic nucleotide binding/potassium channel |
| At1g51500 | 11.2 | 8.5 | 6.6 | CER5 (ECERIFERUM 5); ATPase, ABC transporter |
| At3g23430 | 7.8 | 5.4 | 5.3 | PHO1 (phosphate 1) |
| At3g19930 | 11.9 | 9.8 | 4.5 | STP4 (SUGAR TRANSPORTER 4) |
| Carbohydrate metabolism | ||||
| At4g12430 | 10.2 | 5.4 | 29.3 | TPPF, trehalose-6-phosphate phosphatase |
| At4g24040 | 12.1 | 7.5 | 24.6 | TRE1 (TREHALASE 1); alpha,alpha-trehalase/trehalase |
| At4g02280 | 8.7 | 4.5 | 18.6 | SUS3 (sucrose synthase 3); UDP-glycosyltransferase |
| At2g21590 | 7.9 | 4.0 | 15.2 | APL4; glucose-1-phosphate adenylyltransferase |
| At2g22240 | 10.5 | 6.7 | 14.5 | MIPS2; myo-inositol-3-phosphate synthase |
| At1g78580 | 8.3 | 5.5 | 7.0 | ATTPS1 (trehalose 6-phosphate sysynthase ) |
| At4g22590 | 11.4 | 8.6 | 6.9 | TPPG trehalose-6-phosphate phosphatase |
| Enzymes | ||||
| At3g55710 | 9.0 | 4.5 | 22.3 | UDP-glucoronosyl/UDP-glucosyl transferase family prot. |
| At4g37870 | 12.7 | 9.0 | 12.4 | PCK1 (PHOSPHOENOLPYRUVATE CARBOXYKINASE 1) |
| At2g26250 | 12.4 | 8.9 | 10.8 | KCS10 (3-KETOACYL-COA SYNTHASE 10); acyltransferase |
| At5g43330 | 10.1 | 6.7 | 10.8 | malate dehydrogenase, cytosolic, putative |
| At4g37370 | 10.4 | 7.2 | 9.2 | CYP81D8; electron carrier/monooxygenase/ |
| Cell wall and cuticle | ||||
| At2g47240 | 10.2 | 5.5 | 26.2 | long-chain-fatty-acid–CoA ligase family protein |
| At4g24510 | 9.8 | 6.2 | 12.9 | CER2 (ECERIFERUM 2); acyl transferase |
| At4g18280 | 11.9 | 8.4 | 11.5 | glycine-rich cell wall protein-related |
| At1g63180 | 9.5 | 6.0 | 11.5 | UGE3 (UDP-D-glucose/UDP-D-galactose 4-epimerase 3) |
| At1g26770 | 9.4 | 6.2 | 9.1 | ATEXPA10 (ARABIDOPSIS THALIANA EXPANSIN A 10) |
| At5g57800 | 11.2 | 8.4 | 7.4 | CER3 (ECERIFERUM 3); binding/oxidoreductase |
| Other | ||||
| At5g66400 | 12.3 | 6.1 | 74.5 | RAB18 (RESPONSIVE TO ABA 18) |
| At1g64950 | 10.4 | 5.4 | 33.4 | CYP89A5; electron carrier/monooxygenase |
| At1g44760 | 10.1 | 5.7 | 20.9 | universal stress protein (USP) family protein |
| At5g06760 | 8.7 | 4.7 | 16.3 | LEA group 1 domain-containing protein |
| At2g32120 | 9.9 | 6.0 | 15.0 | HSP70T-2 (HEAT-SHOCK PROTEIN 70T-2); ATP binding |
| At1g52080 | 8.6 | 4.8 | 14.2 | AR791; actin binding |
| At5g07990 | 9.0 | 5.2 | 14.2 | TT7 (TRANSPARENT TESTA 7); flavonoid 3-monooxygenase |
The average normalized log2 signal intensity (SI) for all genes on the arrays (calls present or marginal) was 8.8.