Table II.

List of the 40 most up-regulated highly expressed genes in top stem epidermis classified by functional category

Putative Functional Category and LocusDescription of Encoded ProteinExpression Ratioa (Top)Expression Ratioa (Base)
Lipid Metabolism
    At1g07720β-Ketoacyl-CoA synthase family9.92.7
    At1g64400Long-chain-acyl-CoA synthetase (LACS3)9.41.7
    At2g39400Similar to lipase13.44.8
Transport
    At5g40780Putative Lys and His transporter16.93.3
    At3g55130ABC transporter family12.33.1
    At5g55930Oligopeptide transporter OPT family protein8.29.0
Cell Wall Metabolism
    At4g30280Putative xyloglucan:xyloglucosyl transferase33.727.9
    At4g02330Similar to pectinesterase29.7211
    At3g10720Similar to pectinesterase8.857.4
Disease Resistance
    At1g78860Lectin family protein (mannose-binding)33.819
    At2g33050Similar to disease resistance protein Hcr210.24.4
    At1g75040Pathogenesis-related protein 5 (PR-5)10.01.0
Signal Transduction
    At1g21270Wall-associated kinase 218.22.9
    At5g20050Protein kinase family protein10.05.9
    At1g11350Ser-Thr kinase related9.97.1
    At1g21250Wall-associated kinase 19.91.1
    At2g13790Leu-rich-repeat protein kinase family9.33.4
    At1g51805Leu-rich-repeat protein kinase family8.63.4
    At4g31000Calmodulin-binding protein8.65.1
    At4g23180Ser-Thr kinase related8.35.5
    At2g01890Putative purple acid phosphatase8.31.8
    At4g38550Phospholipase-like protein7.93.4
Transcription
    At4g31800WRKY family transcription factor113.8
    At2g38470WRKY family transcription factor8.94.2
    At2g02450No apical meristem (NAM) family protein8.22.8
Unknown
    At1g22890Expressed protein31.914.9
    At1g78460Expressed protein25.29.2
    At2g28570Expressed protein20.63.2
    At3g28290Integrin-related protein 14a18.991.1
    At5g20230Plastocyanin-like domain-containing protein14.99.1
    At3g26200Cytochrome P450-like13.610.1
    At2g05540Gly-rich protein11.280.2
    At1g56150Auxin-responsive family protein10.56.1
    At3g11600Expressed protein9.57.8
    At5g05440Expressed protein9.22.3
    At2g20950Expressed protein8.83.3
    At4g36500Expressed protein7.93.4
    At1g33600Leu-rich-repeat family protein7.98.4
    At1g29430Auxin-responsive family protein7.89.6
    At5g44020Similar to soybean stem glycoprotein7.436.2
  • a Mean ratio of epidermis-to-stem gene expression. Gene expressions were determined as in Table I. Among genes up-regulated in top stem epidermis, only those showing a signal intensity >1,000 in top epidermis are shown. Descriptions of proteins are from The Institute for Genomic Research, Munich Information Center for Protein Sequences, or Swiss-Prot.