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Title 

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

Authors 

S J LeeM Y LeeSo Young YiSang Keun OhS H ChoiN H HerDo Il ChoiB H MinS G YangChee Hark Harn

Publisher 

American Phytopathological Society

Issue Date 

2002

Citation 

Molecular Plant-Microbe Interactions, vol. 15, no. 6, pp. 540-548

Keywords 

suppression subtractive hybridizationamino acid sequencecapsicumDNA, complementaryDNA, plantgene expression regulation, plantimmunity, naturalleucine zippersmolecular sequence dataplant diseases

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.

ISSN 

0894-0282

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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