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Gene Review:

PP2AA2 - protein phosphatase 2A subunit A2

Arabidopsis thaliana

Synonyms: PDF1, PHOSPHATASE 2A REGULATORY SUBUNIT, PR 65, protein phosphatase 2A subunit A2

Zhou, H.W. et al., Xu, X. et al., Díaz, J. et al., Slabas, A.R. et al., Ahn, I.P. et al., et al.

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High impact information on PDF1

The contrasting responses of these WRKY mutants to the two pathogens correlated with opposite effects on pathogen-induced expression of salicylic acid-regulated PATHOGENESIS-RELATED1 and jasmonic acid-regulated PDF1 [1].
We report here the results of a systematic analysis of the Arabidopsis (Arabidopsis thaliana) regulatory A subunit gene family, which includes the ROOTS CURL IN NAPHTHYLPHTHALAMIC ACID1 (RCN1), PP2AA2, and PP2AA3 genes [2].
The transgenic plants exhibited constitutive expression of jasmonate-responsive genes, including VSP and PDF1 [3].
Treatment of Arabidopsis ecotype Columbia-0 plants with thiamine resulted in the activation of PR-1 but not PDF1 [4].
Two cDNA species encoding sequences homologous to the 65 kDa regulatory subunit (PR 65) of protein phosphatase 2A (PP2A) have been isolated from an Arabidopsis thaliana cDNA library [5].

Associations of PDF1 with chemical compounds

This activation elicits the response of the plant defensin 1 (PDF1) gene, which also responds to jasmonic acid, and the inhibition of the putative auxin responsive factor 2 (ARF2) gene, that also responds to auxin [6].

References

Physical and Functional Interactions between Pathogen-Induced Arabidopsis WRKY18, WRKY40, and WRKY60 Transcription Factors. Xu, X., Chen, C., Fan, B., Chen, Z. Plant Cell (2006) [Pubmed]
Disparate roles for the regulatory A subunit isoforms in Arabidopsis protein phosphatase 2A. Zhou, H.W., Nussbaumer, C., Chao, Y., DeLong, A. Plant Cell (2004) [Pubmed]
Jasmonic acid carboxyl methyltransferase: a key enzyme for jasmonate-regulated plant responses. Seo, H.S., Song, J.T., Cheong, J.J., Lee, Y.H., Lee, Y.W., Hwang, I., Lee, J.S., Choi, Y.D. Proc. Natl. Acad. Sci. U.S.A. (2001) [Pubmed]
Vitamin B1 functions as an activator of plant disease resistance. Ahn, I.P., Kim, S., Lee, Y.H. Plant Physiol. (2005) [Pubmed]
Characterisation of cDNA and genomic clones encoding homologues of the 65 kDa regulatory subunit of protein phosphatase 2A in Arabidopsis thaliana. Slabas, A.R., Fordham-Skelton, A.P., Fletcher, D., Martinez-Rivas, J.M., Swinhoe, R., Croy, R.R., Evans, I.M. Plant Mol. Biol. (1994) [Pubmed]
A model of the ethylene signaling pathway and its gene response in Arabidopsis thaliana: pathway cross-talk and noise-filtering properties. Díaz, J., Alvarez-Buylla, E.R. Chaos (Woodbury, N.Y.) (2006) [Pubmed]

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PP2AA3	Arabidopsis thaliana
PPP2R1B	Bos taurus
PPP2R1B	Canis lupus familiaris
ppp2r1b	Danio rerio
PPP2R1B	Homo sapiens
PPP2R1B	Macaca mulatta
Ppp2r1b	Mus musculus
Os09g0249700	Oryza sativa Japonica Group
PPP2R1B	Pan troglodytes
Ppp2r1b	Rattus norvegicus
pdgfb	Xenopus (Silurana) tropicalis

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