PPI1 : a novel pathogen-induced basic region-leucine zipper (bZIP) transcription factor from pepper

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Title
PPI1 : a novel pathogen-induced basic region-leucine zipper (bZIP) transcription factor from pepper
Author(s)
S J Lee; M Y Lee; So Young Yi; Sang Keun Oh; S H Choi; N H Her; Do Il Choi; B H Min; S G Yang; Chee Hark Harn
Bibliographic Citation
Molecular Plant-Microbe Interactions, vol. 15, no. 6, pp. 540-548
Publication Year
2002
Abstract
We have isolated a full-length cDNA, PPI1 (pepper-PMMV interaction 1), encoding a novel basic region-leucine zipper (bZIP) DNA-binding protein, from expressed sequence tags differentially expressed in Capsicum chinense PI257284 infected with Pepper mild mottle virus (PMMV). PPI1 encodes a predicted protein of 170 amino acids and contains a putative DNA-binding domain that shares significant amino acid identity with ACGT-binding domains of members of the bZIP DNA-binding protein family. PPI1 was localized in the nucleus and had transcriptional activation activity in yeast. Transcripts of the PPI1 gene were preferentially induced during an incompatible interaction by inoculation with PMMV, Pseudomonas syringae pv. syringae 61, and Xanthomonas campestris pv. vesicatoria race 3. However, the PPI1 gene was not induced by abiotic stressors that activate the plant defense-signaling pathway. Our data provide the first evidence that a bZIP transcription factor is preferentially induced by pathogen attack, suggesting that PPI1 may play a specific functional role in the regulation of expression of plant defense-related genes.
Keyword
suppression subtractive hybridization
ISSN
0894-0282
Publisher
Amer Phytopathological Soc
DOI
http://dx.doi.org/10.1094/MPMI.2002.15.6.540
Type
Article
Appears in Collections:
1. Journal Articles > Journal Articles
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