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Gene Review:

PDF1 - protodermal factor 1

Arabidopsis thaliana

Synonyms: F7D19.16, F7D19_16

Abe, M. et al., Abe, M. et al., Xu, L. et al., Jurkowski, G.I. et al.

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High impact information on PDF1

The GUS expression in transgenic plants disappeared when a mutation that abolishes binding of ATML1 was introduced into the PDF1 l1 box sequence of the construct [1].
The Arabidopsis thaliana PROTODERMAL FACTOR1 (PDF1) gene encoding a putative extracellular proline-rich protein is exclusively expressed in the L1 layer of shoot apices and the protoderm of organ primordia [1].
Our analysis revealed that the minimum region necessary to confer L1-specific expression of PDF1 is confined within a 260-bp fragment upstream of the transcription start site [1].
Unlike the wild type, dnd2 plants responding to virulent and avirulent P. syringae exhibited elevated expression of both salicylate-dependent PR-1 and jasmonate and ethylene-dependent PDF1 [2].
In this report, we isolated and characterized a novel recessive mutant, cex1, conferring constitutive JA-responsive phenotypes including JA-inhibitory growth and constitutive expression of JA-regulated AtVSP, Thi2.1 and PDF1 [3].

Biological context of PDF1

Specific expression of the PDF1 gene in protodermal cells is also observed during embryogenesis [4].
The deduced amino acid sequence of PDF1 shares no significant homology with that of other known proteins but contains a putative signal peptide and novel proline-rich repeat motifs, suggesting a cell-wall protein [4].

Analytical, diagnostic and therapeutic context of PDF1

In situ hybridization revealed that the expression of PDF1 is exclusively limited to the L1 layer of vegetative, inflorescence and floral meristems and to the protoderm of organ primordia [4].

References

Identification of a cis-regulatory element for L1 layer-specific gene expression, which is targeted by an L1-specific homeodomain protein. Abe, M., Takahashi, T., Komeda, Y. Plant J. (2001) [Pubmed]
Arabidopsis DND2, a second cyclic nucleotide-gated ion channel gene for which mutation causes the "defense, no death" phenotype. Jurkowski, G.I., Smith, R.K., Yu, I.C., Ham, J.H., Sharma, S.B., Klessig, D.F., Fengler, K.A., Bent, A.F. Mol. Plant Microbe Interact. (2004) [Pubmed]
An Arabidopsis mutant cex1 exhibits constant accumulation of jasmonate-regulated AtVSP, Thi2.1 and PDF1.2. Xu, L., Liu, F., Wang, Z., Peng, W., Huang, R., Huang, D., Xie, D. FEBS Lett. (2001) [Pubmed]
Cloning and characterization of an L1 layer-specific gene in Arabidopsis thaliana. Abe, M., Takahashi, T., Komeda, Y. Plant Cell Physiol. (1999) [Pubmed]

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