The tomato Pti5 gene encodes a pathogen-inducible ethylene response element-binding protein-like transcription factor that interacts with the disease resistance gene product Pto. Overexpression of Pti5 or Pti5-VP16, a translational fusion with a constitutive transcriptional activation domain, in tomato enhanced resistance to Pseudomonas syringae pv. tomato. Constitutive expression of Pti5 or Pti5-VP16 did not affect the basal level of pathogenesis-related gene expression, but it accelerated pathogen-induced expression of GluB and Catalase. The results demonstrate a positive role of Pti5 in defense gene regulation and disease resistance and suggest that a pathogen-activated posttran-scriptional regulatory step is necessary for the pathogen induction of the defense gene expression.

Vol. 14, No. 12
December 2001

ISSN:0894-0282
e-ISSN:1943-7706

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Article History

Issue Date: 25 Jan 2008
Published: 19 Feb 2007
Accepted: 30 Jul 2001

Pages: 1453-1457

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